Artículos de revistas: "Subwavelength photonics"

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Cheben, Pavel, Iñigo Molina Fernandez, David Smith, Weidong Zhou y Pierre Berini. "Subwavelength Photonics". Optics and Photonics News 28, n.º 5 (1 de mayo de 2017): 34. http://dx.doi.org/10.1364/opn.28.5.000034.

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Cheben, Pavel, Robert Halir, Jens H. Schmid, Harry A. Atwater y David R. Smith. "Subwavelength integrated photonics". Nature 560, n.º 7720 (agosto de 2018): 565–72. http://dx.doi.org/10.1038/s41586-018-0421-7.

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Luque-González, José Manuel, Alejandro Sánchez-Postigo, Abdelfettah Hadij-ElHouati, Alejandro Ortega-Moñux, J. Gonzalo Wangüemert-Pérez, Jens H. Schmid, Pavel Cheben, Íñigo Molina-Fernández y Robert Halir. "A review of silicon subwavelength gratings: building break-through devices with anisotropic metamaterials". Nanophotonics 10, n.º 11 (13 de agosto de 2021): 2765–97. http://dx.doi.org/10.1515/nanoph-2021-0110.

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Abstract Silicon photonics is playing a key role in areas as diverse as high-speed optical communications, neural networks, supercomputing, quantum photonics, and sensing, which demand the development of highly efficient and compact light-processing devices. The lithographic segmentation of silicon waveguides at the subwavelength scale enables the synthesis of artificial materials that significantly expand the design space in silicon photonics. The optical properties of these metamaterials can be controlled by a judicious design of the subwavelength grating geometry, enhancing the performance of nanostructured devices without jeopardizing ease of fabrication and dense integration. Recently, the anisotropic nature of subwavelength gratings has begun to be exploited, yielding unprecedented capabilities and performance such as ultrabroadband behavior, engineered modal confinement, and sophisticated polarization management. Here we provide a comprehensive review of the field of subwavelength metamaterials and their applications in silicon photonics. We first provide an in-depth analysis of how the subwavelength geometry synthesizes the metamaterial and give insight into how properties like refractive index or anisotropy can be tailored. The latest applications are then reviewed in detail, with a clear focus on how subwavelength structures improve device performance. Finally, we illustrate the design of two ground-breaking devices in more detail and discuss the prospects of subwavelength gratings as a tool for the advancement of silicon photonics.

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4

Shcherbakov, M. R., D. N. Neshev, B. Hopkins, A. S. Shorokhov, I. Staude, E. V. Melik-Gaykazyan, M. Decker et al. "Nonlinear Properties of "Magnetic Light"". Asia Pacific Physics Newsletter 04, n.º 01 (23 de octubre de 2015): 57–58. http://dx.doi.org/10.1142/s2251158x15000211.

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Control of light at the nanoscale is demanding for future successful on-chip integration. At the subwavelength scale, the conventional optical elements such as lenses become not functional, and they require conceptually new approach for a design of nanoscale photonic devices. The most common approach to the subwavelength photonics is based on plasmonic nanoparticles and plasmonic waveguides due to their ability to capture and concentrate visible light at subwavelength dimensions. But the main drawback of all plasmonic devices is their intrinsic losses due to metallic components which affect strongly the overall performance of plasmonic structures limiting their scalability and practical use.

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5

Wu, Sailong, Xin Mu, Lirong Cheng, Simei Mao y H. Y. Fu. "State-of-the-Art and Perspectives on Silicon Waveguide Crossings: A Review". Micromachines 11, n.º 3 (20 de marzo de 2020): 326. http://dx.doi.org/10.3390/mi11030326.

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In the past few decades, silicon photonics has witnessed a ramp-up of investment in both research and industry. As a basic building block, silicon waveguide crossing is inevitable for dense silicon photonic integrated circuits and efficient crossing designs will greatly improve the performance of photonic devices with multiple crossings. In this paper, we focus on the state-of-the-art and perspectives on silicon waveguide crossings. It reviews several classical structures in silicon waveguide crossing design, such as shaped taper, multimode interference, subwavelength grating, holey subwavelength grating and vertical directional coupler by forward or inverse design method. In addition, we introduce some emerging research directions in crossing design including polarization-division-multiplexing and mode-division-multiplexing technologies.

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Yu, W., D. Wu, X. Duan y Y. Yi. "Subwavelength Grating Structure with High Aspect Ratio and Tapered Sidewall Profiles". MRS Advances 1, n.º 23 (28 de diciembre de 2015): 1693–701. http://dx.doi.org/10.1557/adv.2015.32.

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ABSTRACTCMOS-compatible fabrication and etching processes are often used in subwavelength grating structures manufacturing, it normally generates tapered sidewall profile of the gratings. In this work, we have studied the impacts on resonance mode characteristics of subwavelength grating structures due to the tapered sidewall profile, as well as grating with high aspect ratio. Our simulation results have revealed that both of these two factors play important roles on the resonance mode behavior of subwavelength grating devices. We also discussed the mechanism between the guided mode resonance and the grating cavity mode resonance. Our study will provide guidance for a series of integrated photonics devices applications, such as compact optical filter, photonics amplifier, and lasers, while the realistic subwavelength grating structure is considered.

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Yoon, Hosang, Kitty Y. M. Yeung, Philip Kim y Donhee Ham. "Plasmonics with two-dimensional conductors". Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 372, n.º 2012 (28 de marzo de 2014): 20130104. http://dx.doi.org/10.1098/rsta.2013.0104.

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A wealth of effort in photonics has been dedicated to the study and engineering of surface plasmonic waves in the skin of three-dimensional bulk metals, owing largely to their trait of subwavelength confinement. Plasmonic waves in two-dimensional conductors, such as semiconductor heterojunction and graphene, contrast the surface plasmonic waves on bulk metals, as the former emerge at gigahertz to terahertz and infrared frequencies well below the photonics regime and can exhibit far stronger subwavelength confinement. This review elucidates the machinery behind the unique behaviours of the two-dimensional plasmonic waves and discusses how they can be engineered to create ultra-subwavelength plasmonic circuits and metamaterials for infrared and gigahertz to terahertz integrated electronics.

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8

Law, M. "Nanoribbon Waveguides for Subwavelength Photonics Integration". Science 305, n.º 5688 (27 de agosto de 2004): 1269–73. http://dx.doi.org/10.1126/science.1100999.

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Sirbuly, Donald J., Matt Law, Haoquan Yan y Peidong Yang. "Semiconductor Nanowires for Subwavelength Photonics Integration". Journal of Physical Chemistry B 109, n.º 32 (agosto de 2005): 15190–213. http://dx.doi.org/10.1021/jp051813i.

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10

Wang, Junjia, Ivan Glesk y Lawrence R. Chen. "Subwavelength grating devices in silicon photonics". Science Bulletin 61, n.º 11 (junio de 2016): 879–88. http://dx.doi.org/10.1007/s11434-016-1077-z.

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11

He, Sailing y Bingkun Zhou. "Advances in subwavelength photonics in China". Laser & Photonics Reviews 8, n.º 4 (julio de 2014): A43—A44. http://dx.doi.org/10.1002/lpor.201470048.

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12

Velasco, A. V., D. González-Andrade, A. Herrero-Bermello, J. M. Luque-González, R. Halir, J. G. Wangüemert-Pérez, A. Ortega-Moñux, A. Dias, I. Molina-Fernández y P. Cheben. "Ultra-broadband silicon photonics devices based on subwavelength metamaterials -INVITED". EPJ Web of Conferences 238 (2020): 01002. http://dx.doi.org/10.1051/epjconf/202023801002.

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Subwavelength structured waveguides provide tailorable optical properties that can be leveraged to overcome bandwidth limitations in a wide range of photonic devices. In this invited talk, we present an overview of recent developments on subwavelength engineered building blocks, including phase shifters, mode multiplexers, polarization beam splitters and zero-birefringence waveguides.

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13

Wangüemert-Pérez, J. Gonzalo, Abdelfettah Hadij-ElHouati, Alejandro Sánchez-Postigo, Jonas Leuermann, Dan-Xia Xu, Pavel Cheben, Alejandro Ortega-Moñux, Robert Halir y Íñigo Molina-Fernández. "[INVITED] Subwavelength structures for silicon photonics biosensing". Optics & Laser Technology 109 (enero de 2019): 437–48. http://dx.doi.org/10.1016/j.optlastec.2018.07.071.

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14

Koshelev, Kirill, Sergey Kruk, Elizaveta Melik-Gaykazyan, Jae-Hyuck Choi, Andrey Bogdanov, Hong-Gyu Park y Yuri Kivshar. "Subwavelength dielectric resonators for nonlinear nanophotonics". Science 367, n.º 6475 (16 de enero de 2020): 288–92. http://dx.doi.org/10.1126/science.aaz3985.

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Subwavelength optical resonators made of high-index dielectric materials provide efficient ways to manipulate light at the nanoscale through mode interferences and enhancement of both electric and magnetic fields. Such Mie-resonant dielectric structures have low absorption, and their functionalities are limited predominantly by radiative losses. We implement a new physical mechanism for suppressing radiative losses of individual nanoscale resonators to engineer special modes with high quality factors: optical bound states in the continuum (BICs). We demonstrate that an individual subwavelength dielectric resonator hosting a BIC mode can boost nonlinear effects increasing second-harmonic generation efficiency. Our work suggests a route to use subwavelength high-index dielectric resonators for a strong enhancement of light–matter interactions with applications to nonlinear optics, nanoscale lasers, quantum photonics, and sensors.

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15

Yang, Ruoxi y Zhaolin Lu. "Subwavelength Plasmonic Waveguides and Plasmonic Materials". International Journal of Optics 2012 (2012): 1–12. http://dx.doi.org/10.1155/2012/258013.

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With the fast development of microfabrication technology and advanced computational tools, nanophotonics has been widely studied for high-speed data transmission, sensitive optical detection, manipulation of ultrasmall objects, and visualization of nanoscale patterns. As an important branch of nanophotonics, plasmonics has enabled light-matter interactions at a deep subwavelength length scale. Plasmonics, or surface plasmon based photonics, focus on how to exploit the optical property of metals with abundant free electrons and hence negative permittivity. The oscillation of free electrons, when properly driven by electromagnetic waves, would form plasmon-polaritons in the vicinity of metal surfaces and potentially result in extreme light confinement. The objective of this article is to review the progress of subwavelength or deep subwavelength plasmonic waveguides, and fabrication techniques of plasmonic materials.

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Minin, Igor V., Cheng-Yang Liu, Yury E. Geints y Oleg V. Minin. "Recent Advances in Integrated Photonic Jet-Based Photonics". Photonics 7, n.º 2 (11 de junio de 2020): 41. http://dx.doi.org/10.3390/photonics7020041.

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The study of accelerating Airy-family beams has made significant progress, not only in terms of numerical and experimental investigations, but also in conjunction with many potential applications. However, the curvature of such beams (and hence their acceleration) is usually greater than the wavelength. Relatively recently, a new type of localized wave beams with subwavelength curvature, called photonic hooks, was discovered. This paper briefly reviews the substantial literature concerning photonic jet and photonic hook phenomena, based on the photonic jet principle. Meanwhile, the photonic jet ensemble can be produced by optical wave diffraction at 2D phase diffraction gratings. The guidelines of jets’ efficient manipulation, through the variation of both the shape and spatial period of diffraction grating rulings, are considered. Amazingly, the mesoscale dielectric Janus particle, with broken shape or refractive index symmetry, is used to generate the curved photonic jet—a photonic hook—emerging from its shadow-side surface. Using the photonic hook, the resolution of optical scanning systems can be improved to develop optomechanical tweezers for moving nanoparticles, cells, bacteria and viruses along curved paths and around transparent obstacles. These unique properties of photonic jets and hooks combine to afford important applications for low-loss waveguiding, subdiffraction-resolution nanopatterning and nanolithography.

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17

Kivshar, Yuri. "All-dielectric meta-optics and non-linear nanophotonics". National Science Review 5, n.º 2 (23 de enero de 2018): 144–58. http://dx.doi.org/10.1093/nsr/nwy017.

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Abstract Most optical metamaterials fabricated and studied to date employ metallic components resulting in significant losses, heat and overall low efficiencies. A new era of metamaterial physics is associated with all-dielectric meta-optics, which employs electric and magnetic Mie resonances of subwavelength particles with high refractive index for an optically induced magnetic response, thus underpinning a new approach to design and fabricate functional and practical metadevices. Here we review the recent developments in meta-optics and subwavelength dielectric photonics and demonstrate that the Mie resonances can play a crucial role in the realization of the unique functionalities of meta-atoms, also driving novel effects in the fields of metamaterials and nanophotonics. We discuss the recent research frontiers in all-dielectric meta-optics and uncover how Mie resonances can be employed for a flexible control of light with full phase and amplitude engineering, including unidirectional metadevices, highly transparent metasurfaces, non-linear nanophotonics and topological photonics.

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Dintinger, José, Aloyse Degiron y Thomas W. Ebbesen. "Enhanced Light Transmission through Subwavelength Holes". MRS Bulletin 30, n.º 5 (mayo de 2005): 381–84. http://dx.doi.org/10.1557/mrs2005.102.

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AbstractThe transmission of light through a hole was thought to be very weak when all of the lateral dimensions of the hole were much smaller than the wavelength of the light.The discovery of enhanced transmission has changed this view, raising fundamental questions and leading to many practical applications ranging from photonics to chemical sensing. A key feature of the transmission process is the activation of surface plasmons. In this article, we review the present understanding of this phenomenon and illustrate its potential through several examples of applications in different fields.

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Chernyavsky, Alexander, Alexey Bereza, Leonid Frumin y David Shapiro. "Modeling of Subwavelength Gratings: Near-Field Behavior". Photonics 10, n.º 12 (30 de noviembre de 2023): 1332. http://dx.doi.org/10.3390/photonics10121332.

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Subwavelength gratings have received considerable attention in the fields of photonics, optoelectronics, and image sensing. This paper presents simple analytical expressions for the near-field intensity distribution of radiation scattered by these gratings. Our proposed methodology employs a 2D point dipole model and a specialized version of perturbation theory. By validating our models via numerical techniques including boundary and finite element methods, we demonstrate their effectiveness, even for narrow slits.

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Law, Stephanie, Viktor Podolskiy y Daniel Wasserman. "Towards nano-scale photonics with micro-scale photons: the opportunities and challenges of mid-infrared plasmonics". Nanophotonics 2, n.º 2 (1 de abril de 2013): 103–30. http://dx.doi.org/10.1515/nanoph-2012-0027.

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AbstractSurface plasmon polaritons and their localized counterparts, surface plasmons, are widely used at visible and near-infrared (near-IR) frequencies to confine, enhance, and manipulate light on the subwavelength scale. At these frequencies, surface plasmons serve as enabling mechanisms for future on-chip communications architectures, high-performance sensors, and high-resolution imaging and lithography systems. Successful implementation of plasmonics-inspired solutions at longer wavelengths, in the mid-infrared (mid-IR) frequency range, would benefit a number of highly important technologies in health- and defense-related fields that include trace-gas detection, heat-signature sensing, mimicking, and cloaking, and source and detector development. However, the body of knowledge of visible/near-IR frequency plasmonics cannot be easily transferred to the mid-IR due to the fundamentally different material response of metals in these two frequency ranges. Therefore, mid-IR plasmonic architectures for subwavelength light manipulation require both new materials and new geometries. In this work we attempt to provide a comprehensive review of recent approaches to realize nano-scale plasmonic devices and structures operating at mid-IR wavelengths. We first discuss the motivation for the development of the field of mid-IR plasmonics and the fundamental differences between plasmonics in the mid-IR and at shorter wavelengths. We then discuss early plasmonics work in the mid-IR using traditional plasmonic metals, illuminating both the impressive results of this work, as well as the challenges arising from the very different behavior of metals in the mid-IR, when compared to shorter wavelengths. Finally, we discuss the potential of new classes of mid-IR plasmonic materials, capable of mimicking the behavior of traditional metals at shorter wavelengths, and allowing for true subwavelength, and ultimately, nano-scale confinement at long wavelengths.

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Manoccio, Mariachiara, Marco Esposito, Adriana Passaseo, Massimo Cuscunà y Vittorianna Tasco. "Focused Ion Beam Processing for 3D Chiral Photonics Nanostructures". Micromachines 12, n.º 1 (23 de diciembre de 2020): 6. http://dx.doi.org/10.3390/mi12010006.

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The focused ion beam (FIB) is a powerful piece of technology which has enabled scientific and technological advances in the realization and study of micro- and nano-systems in many research areas, such as nanotechnology, material science, and the microelectronic industry. Recently, its applications have been extended to the photonics field, owing to the possibility of developing systems with complex shapes, including 3D chiral shapes. Indeed, micro-/nano-structured elements with precise geometrical features at the nanoscale can be realized by FIB processing, with sizes that can be tailored in order to tune optical responses over a broad spectral region. In this review, we give an overview of recent efforts in this field which have involved FIB processing as a nanofabrication tool for photonics applications. In particular, we focus on FIB-induced deposition and FIB milling, employed to build 3D nanostructures and metasurfaces exhibiting intrinsic chirality. We describe the fabrication strategies present in the literature and the chiro-optical behavior of the developed structures. The achieved results pave the way for the creation of novel and advanced nanophotonic devices for many fields of application, ranging from polarization control to integration in photonic circuits to subwavelength imaging.

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Gu, Min Ying y Zeng Wang. "Nano-Illumination Based on Field Enhancement inside a Subwavelength Metallic Structure". Advanced Materials Research 661 (febrero de 2013): 37–41. http://dx.doi.org/10.4028/www.scientific.net/amr.661.37.

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A subwavelength metallic slit is proposed to generate super-strong nano-illumination. We use the finite-difference time-domain method to present that character. By changing a subwavelength slit into several slits and fixing the total volume of the air slits, we found that the energy was enhanced in the nano-slits. The more nano-slits have the better effective of enhancement. The slits also make the output light beams focusing. Because of the successive enhancement processes, the light from the nano-slit could become hundred times stronger than the incident light and accordingly could have great potentials for applications in optical data storage, super-resolution imaging, lithography, photonics, and other applications that need nano-illumination.

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Mao, Simei, Lirong Cheng, Caiyue Zhao, Faisal Nadeem Khan, Qian Li y H. Y. Fu. "Inverse Design for Silicon Photonics: From Iterative Optimization Algorithms to Deep Neural Networks". Applied Sciences 11, n.º 9 (23 de abril de 2021): 3822. http://dx.doi.org/10.3390/app11093822.

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Silicon photonics is a low-cost and versatile platform for various applications. For design of silicon photonic devices, the light-material interaction within its complex subwavelength geometry is difficult to investigate analytically and therefore numerical simulations are majorly adopted. To make the design process more time-efficient and to improve the device performance to its physical limits, various methods have been proposed over the past few years to manipulate the geometries of silicon platform for specific applications. In this review paper, we summarize the design methodologies for silicon photonics including iterative optimization algorithms and deep neural networks. In case of iterative optimization methods, we discuss them in different scenarios in the sequence of increased degrees of freedom: empirical structure, QR-code like structure and irregular structure. We also review inverse design approaches assisted by deep neural networks, which generate multiple devices with similar structure much faster than iterative optimization methods and are thus suitable in situations where piles of optical components are needed. Finally, the applications of inverse design methodology in optical neural networks are also discussed. This review intends to provide the readers with the suggestion for the most suitable design methodology for a specific scenario.

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Babicheva, Viktoriia E. "Optical Processes behind Plasmonic Applications". Nanomaterials 13, n.º 7 (3 de abril de 2023): 1270. http://dx.doi.org/10.3390/nano13071270.

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Plasmonics is a revolutionary concept in nanophotonics that combines the properties of both photonics and electronics by confining light energy to a nanometer-scale oscillating field of free electrons, known as a surface plasmon. Generation, processing, routing, and amplification of optical signals at the nanoscale hold promise for optical communications, biophotonics, sensing, chemistry, and medical applications. Surface plasmons manifest themselves as confined oscillations, allowing for optical nanoantennas, ultra-compact optical detectors, state-of-the-art sensors, data storage, and energy harvesting designs. Surface plasmons facilitate both resonant characteristics of nanostructures and guiding and controlling light at the nanoscale. Plasmonics and metamaterials enable the advancement of many photonic designs with unparalleled capabilities, including subwavelength waveguides, optical nanoresonators, super- and hyper-lenses, and light concentrators. Alternative plasmonic materials have been developed to be incorporated in the nanostructures for low losses and controlled optical characteristics along with semiconductor-process compatibility. This review describes optical processes behind a range of plasmonic applications. It pays special attention to the topics of field enhancement and collective effects in nanostructures. The advances in these research topics are expected to transform the domain of nanoscale photonics, optical metamaterials, and their various applications.

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Venkatesh, D. Nagasamy. "Nano-photonics in cancer therapy". Journal of medical pharmaceutical and allied sciences 12, n.º 2 (30 de abril de 2023): 5684–92. http://dx.doi.org/10.55522/jmpas.v12i2.4451.

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Biological alterations result in unchecked cell growth and division producing cancer. Mankind has always been interested in light, and, it being both a topic of study and a device for looking into other occurrences can be seen following the inception of time. Besides the development of nanosystems, the usage of light has now entered a new level where interactions between light and matter occur at wavelength and subwavelength levels accompanying management by physico-chemical properties of nanoforms. This area of nanophotonics enables the investigation and control of lightencompassing nanoforms, individual molecules, and biomolecular assemblies. Numerous molecular cancer treatments have been developed using the amazing nanoscale features as a result of nanophotonics in biomolecular interactivities, or nanobiophotonics. In this work, we demonstrate the applications of nanobiophotonics and of multifaceted nanoplatforms which constitute excellent treatment efficiency and impart breakthroughs for aimed tumour treatment

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Papachristopoulou, Konstantina y Nikolaos A. Vainos. "Systolic Nanofabrication of Super-Resolved Photonics and Biomimetics". Nanomaterials 10, n.º 12 (3 de diciembre de 2020): 2418. http://dx.doi.org/10.3390/nano10122418.

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Systolic nanofabrication is demonstrated via conformal downsizing of three-dimensional micropatterned monolithic master-casts made of extremely nanoporous aerogel and xerogel materials. The porous solid skeleton collapses by thermal treatment, generating miniaturized replicas, which preserve the original stereometric forms and incorporate minified nanoscale patterns. Paradigmatic holographic and biomimetic nanoarchitectures are conformally downsized by ~4×, yielding subwavelength surface features of less than ~150 nm. The operations demonstrate the super-resolution capabilities of this alternative concept and its potential evolution to an innovative nanotechnology of the future.

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Ahmed, Hammad, Hongyoon Kim, Yuebian Zhang, Yuttana Intaravanne, Jaehyuck Jang, Junsuk Rho, Shuqi Chen y Xianzhong Chen. "Optical metasurfaces for generating and manipulating optical vortex beams". Nanophotonics 11, n.º 5 (10 de enero de 2022): 941–56. http://dx.doi.org/10.1515/nanoph-2021-0746.

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Abstract Optical vortices (OVs) carrying orbital angular momentum (OAM) have attracted considerable interest in the field of optics and photonics owing to their peculiar optical features and extra degree of freedom for carrying information. Although there have been significant efforts to realize OVs using conventional optics, it is limited by large volume, high cost, and lack of design flexibility. Optical metasurfaces have recently attracted tremendous interest due to their unprecedented capability in the manipulation of the amplitude, phase, polarization, and frequency of light at a subwavelength scale. Optical metasurfaces have revolutionized design concepts in photonics, providing a new platform to develop ultrathin optical devices for the realization of OVs at subwavelength resolution. In this article, we will review the recent progress in optical metasurface-based OVs. We provide a comprehensive discussion on the optical manipulation of OVs, including OAM superposition, OAM sorting, OAM multiplexing, OAM holography, and nonlinear metasurfaces for OAM generation and manipulation. The rapid development of metasurface for OVs generation and manipulation will play an important role in many relevant research fields. We expect that metasurface will fuel the continuous progress of wearable and portable consumer electronics and optics where low-cost and miniaturized OAM related systems are in high demand.

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Luo, Hao, Haibo Yu, Yangdong Wen, Jianchen Zheng, Xiaoduo Wang y Lianqing Liu. "Direct Writing of Silicon Oxide Nanopatterns Using Photonic Nanojets". Photonics 8, n.º 5 (3 de mayo de 2021): 152. http://dx.doi.org/10.3390/photonics8050152.

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The ability to create controllable patterns of micro- and nanostructures on the surface of bulk silicon has widespread application potential. In particular, the direct writing of silicon oxide patterns on silicon via femtosecond laser-induced silicon amorphization has attracted considerable attention owing to its simplicity and high efficiency. However, the direct writing of nanoscale resolution is challenging due to the optical diffraction effect. In this study, we propose a highly efficient, one-step method for preparing silicon oxide nanopatterns on silicon. The proposed method combines femtosecond laser-induced silicon amorphization with a subwavelength-scale beam waist of photonic nanojets. We demonstrate the direct writing of arbitrary nanopatterns via contactless scanning, achieving patterns with a minimum feature size of 310 nm and a height of 120 nm. The proposed method shows potential for the fabrication of multifunctional surfaces, silicon-based chips, and silicon photonics.

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Rho, Junsuk. "Metasurfaces: Subwavelength nanostructure arrays for ultrathin flat optics and photonics". MRS Bulletin 45, n.º 3 (marzo de 2020): 180–87. http://dx.doi.org/10.1557/mrs.2020.68.

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Wang, Binbin, Sylvain Blaize, Jinbong Seok, Sera Kim, Heejun Yang y Rafael Salas-Montiel. "Plasmonic-Based Subwavelength Graphene-on-hBN Modulator on Silicon Photonics". IEEE Journal of Selected Topics in Quantum Electronics 25, n.º 3 (mayo de 2019): 1–6. http://dx.doi.org/10.1109/jstqe.2019.2893767.

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Afzal, Francis O., Yusheng Bian, Bo Peng, Shuren Hu, Abdelsalam Aboketaf, Kevin K. Dezfulian, Karen Nummy et al. "O-Band Subwavelength Grating Filters in a Monolithic Photonics Technology". IEEE Photonics Technology Letters 32, n.º 18 (15 de septiembre de 2020): 1207–10. http://dx.doi.org/10.1109/lpt.2020.3017096.

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32

Notomi, Masaya, Masato Takiguchi, Sylvain Sergent, Guoqiang Zhang y Hisashi Sumikura. "Nanowire photonics toward wide wavelength range and subwavelength confinement [Invited]". Optical Materials Express 10, n.º 10 (16 de septiembre de 2020): 2560. http://dx.doi.org/10.1364/ome.401317.

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Lawrence R. Chen, Lawrence R. Chen. "Subwavelength grating waveguide devices in silicon-on-insulators for integrated microwave photonics (Invited Paper)". Chinese Optics Letters 15, n.º 1 (2017): 010004–10008. http://dx.doi.org/10.3788/col201715.010004.

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Minin, I. V., C.-Y. Liu y O. V. Minin. "Towards structured SPP manipulation of light at the nanoscale". IOP Conference Series: Materials Science and Engineering 1198, n.º 1 (1 de noviembre de 2021): 012007. http://dx.doi.org/10.1088/1757-899x/1198/1/012007.

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Abstract Surface plasmon photonics is a rapidly developing area of physics, optics, and nanotechnology. The unique ability of meso- and nano-structures to manipulate light in the subwavelength range down to nanoscale volumes stimulated their use in a vast research endeavours. The investigations are driven by interests in both fundamental and practical applications aspects where plasmonic light concentrators elegantly interface mesoscale dielectric structure with thin metal films. The effects of a photonic nanojet and a photonic hook, discovered by Minins, have been studied in sufficient detail in the literature, but only recently have they been able to be confirmed experimentally for low-dimensional systems – in-plane surface plasmon waves. The nature of these phenomenas lies in the dispersion of the phase velocity of waves inside the dielectric structure, which leads to constructive interference of the transmitted, diffracted, and near-field waves. Our results set the grounds for in-plane plasmonic wavelength scaled optics with unprecedented control of the energy flow at the nanoscale, and shown a way toward realizing the densely packed optical elements needed for future plasmonic and optical devices.

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Butt, Muhammad Ali, Andrzej Kaźmierczak, Cuma Tyszkiewicz, Paweł Karasiński, Edyta Środa, Jacek Olszewski, Piotr Pala et al. "HYPHa project: a low-cost alternative for integrated photonics". Photonics Letters of Poland 14, n.º 2 (1 de julio de 2022): 25. http://dx.doi.org/10.4302/plp.v14i2.1145.

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In this paper, a brief introduction to the Hybrid sensor platforms of integrated photonic systems based on ceramic and polymer materials (HYPHa) is presented. The project's goal is to establish a collaborative effort of institutes specialized in integrated optics. The newly formed group of professionals will be founded on research groups' experience, collaboration, and devotion. We intend to develop a method for combining competencies and a universal material platform for integrated photonics, based on newly validated hybrid materials as part of the project. Silica compounds with additions including TiO2, SnO2, used as structural matrices, polymer coatings with dopants (active or protective layers), organic dyes, and active two-dimensional materials such as transition metal dichalcogenides, graphene hybrids, and boron nitride will be the foundation for these materials. Full Text: PDF ReferencesK. Rola, A. Zajac, M. Czajkowski, A. Szpecht, M. Zdonczyk, M. Smiglak, J. Cybinska, K. Komorowska, "Ionic liquids for active photonics components fabrication", Opt. Mater. 89, 106-111 (2019). CrossRef D. Kowal, K. Rola, J. Cybinska, M. Skorenski, A. Zajac, A. Szpecht, M. Smiglak, S. Drobczynski, K. Ciesiolkiewicz, K. Komorowska, "Fluorescent ionic liquid micro reservoirs fabricated by dual-step E-beam patterning", Mater. Res. Bull. 142, 111434 (2021). CrossRef T. Martynkien, J. Olszewski, M. Szpulak, G. Golojuch, W. Urbanczyk, T. Nasilowski, F. Berghmans, and H. Thienpont, "Experimental investigations of bending loss oscillations in large mode area photonic crystal fibers", Opt. Express 15, 13547-13556 (2007). CrossRef E. Środa, J. Olszewski, and W. Urbańczyk, "Reducing bend-induced loss and crosstalk in a two-mode ridge waveguide by steplike thickness structuring", Appl. Opt. 61, 1164-1170 (2022). CrossRef P. Karasinski, C. Tyszkiewicz, A. Domanowska, A. Michalewicz, J. Mazur, "Low loss, long time stable sol–gel derived silica–titania waveguide films", Mater. Lett. 143, 5-7 (2015). CrossRef P. Karasinski, C. Tyszkiewicz, A. Maciaga, I.V. Kityk, E. Gondek, "Two-component waveguide SiO2:TiO2 films fabricated by sol–gel technology for optoelectronic applications", J. of Mater. Sci.: Mater. Electron. 26, 2733-2736 (2015). CrossRef M.A. Butt, A. Kazmierczak, C. Tyszkiewicz, P. Karasinski, R. Piramidowicz, "Mode Sensitivity Exploration of Silica–Titania Waveguide for Refractive Index Sensing Applications", Sensors 21, 7452 (2021). CrossRef A. Kazmierczak, M. Slowikowski, K. Pavlov, M. Filipiak, M. Vervaeke, C. Tyszkiewicz, H. Ottevaere, R. Piramidowicz, P. Karasinski, "Efficient, low-cost optical coupling mechanism for TiO2-SiO2 sol-gel derived slab waveguide surface grating coupler sensors", Opt. Appl. 50, 539 (2020). CrossRef M.A. Butt, S.N. Khonina, N.L. Kazanskiy, "A highly sensitive design of subwavelength grating double-slot waveguide microring resonator", Laser Phys. Lett. 17, 076201 (2020). CrossRef N.L. Kazanskiy, M.A. Butt, S.N. Khonina, "Silicon photonic devices realized on refractive index engineered subwavelength grating waveguides-A review", Opt. Laser Technol. 138, 106863 (2021). CrossRef M.A. Butt, S.N. Khonina, N.L. Kazanskiy, "Recent advances in photonic crystal optical devices: A review", Opt. Laser Technol. 142, 107265 (2021). CrossRef L. Xu, Y. Wang, E. El-Fiky, D. Mao, A. Kumar, Z. Xing, Md. G. Saber, M. Jacques, D.V. Plant, "Compact Broadband Polarization Beam Splitter Based on Multimode Interference Coupler With Internal Photonic Crystal for the SOI Platform", J. Light. Technol. 37, 1231 (2019). CrossRef R. Marchetti, C. Lacava, A. Khokhar, X. Chen, I. Cristiani, D.J. Richardson, G. T. Reed, P. Petropoulos, P. Minzioni, "High-efficiency grating-couplers: demonstration of a new design strategy", Sci. Rep. 7, 16670 (2017). CrossRef

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36

Fraser, William, Radovan Korček, Ivan Glesk, Jan Litvik, Jens H. Schmid, Pavel Cheben, Winnie N. Ye y Daniel Benedikovic. "High-Efficiency Metamaterial-Engineered Grating Couplers for Silicon Nitride Photonics". Nanomaterials 14, n.º 7 (27 de marzo de 2024): 581. http://dx.doi.org/10.3390/nano14070581.

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Silicon nitride (Si3N4) is an ideal candidate for the development of low-loss photonic integrated circuits. However, efficient light coupling between standard optical fibers and Si3N4 chips remains a significant challenge. For vertical grating couplers, the lower index contrast yields a weak grating strength, which translates to long diffractive structures, limiting the coupling performance. In response to the rise of hybrid photonic platforms, the adoption of multi-layer grating arrangements has emerged as a promising strategy to enhance the performance of Si3N4 couplers. In this work, we present the design of high-efficiency surface grating couplers for the Si3N4 platform with an amorphous silicon (α-Si) overlay. The surface grating, fully formed in an α-Si waveguide layer, utilizes subwavelength grating (SWG)-engineered metamaterials, enabling simple realization through single-step patterning. This not only provides an extra degree of freedom for controlling the fiber–chip coupling but also facilitates portability to existing foundry fabrication processes. Using rigorous three-dimensional (3D) finite-difference time-domain (FDTD) simulations, a metamaterial-engineered grating coupler is designed with a coupling efficiency of −1.7 dB at an operating wavelength of 1.31 µm, with a 1 dB bandwidth of 31 nm. Our proposed design presents a novel approach to developing high-efficiency fiber–chip interfaces for the silicon nitride integration platform for a wide range of applications, including datacom and quantum photonics.

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37

Minin, I. V. y O. V. Minin. "MESOSCALE DIFFRACTIVE PHOTONICS IN GEOSCIENCES". ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B6 (17 de junio de 2016): 173–75. http://dx.doi.org/10.5194/isprs-archives-xli-b6-173-2016.

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The scattered light by various dielectric particles in atmosphere give information about the type of molecules and particles and their location, which are important to definition of propagation limitations through atmospheric and space weather variations, crisis communications, etc. Although these investigations explain far field properties of disturbed radiations, the solution of the physical problem requires simulations of the interactions in near-field. It has been shown that strongly localized EM field near the surface of single dielectric particle may be form by non-spherical and non-symmetrical mesoscale particles both as in transmitting as in reflection mode. It was also shown that the main lobe is narrower in case of 3 cube chain than single cube in far field, but there are many side-scattering lobes. It was mentioned that unique advantages provided by mesoscale dielectric photonic crystal based particles with three spatial dimensions of arbitrary shape allow developing a new types of micro/nano-probes with subwavelength resolution for ultra compact spectrometer-free sensor for on board a spacecraft or a plane.

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38

Minin, I. V. y O. V. Minin. "MESOSCALE DIFFRACTIVE PHOTONICS IN GEOSCIENCES". ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B6 (17 de junio de 2016): 173–75. http://dx.doi.org/10.5194/isprsarchives-xli-b6-173-2016.

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The scattered light by various dielectric particles in atmosphere give information about the type of molecules and particles and their location, which are important to definition of propagation limitations through atmospheric and space weather variations, crisis communications, etc. Although these investigations explain far field properties of disturbed radiations, the solution of the physical problem requires simulations of the interactions in near-field. It has been shown that strongly localized EM field near the surface of single dielectric particle may be form by non-spherical and non-symmetrical mesoscale particles both as in transmitting as in reflection mode. It was also shown that the main lobe is narrower in case of 3 cube chain than single cube in far field, but there are many side-scattering lobes. It was mentioned that unique advantages provided by mesoscale dielectric photonic crystal based particles with three spatial dimensions of arbitrary shape allow developing a new types of micro/nano-probes with subwavelength resolution for ultra compact spectrometer-free sensor for on board a spacecraft or a plane.

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39

Babicheva, Viktoriia E., Alexandra Boltasseva y Andrei V. Lavrinenko. "Transparent conducting oxides for electro-optical plasmonic modulators". Nanophotonics 4, n.º 1 (16 de junio de 2015): 165–85. http://dx.doi.org/10.1515/nanoph-2015-0004.

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Abstract:The ongoing quest for ultra-compact optical devices has reached a bottleneck due to the diffraction limit in conventional photonics. New approaches that provide subwavelength optical elements, and therefore lead to miniaturization of the entire photonic circuit, are urgently required. Plasmonics, which combines nanoscale light confinement and optical-speed processing of signals, has the potential to enable the next generation of hybrid information-processing devices, which are superior to the current photonic dielectric components in terms of speed and compactness. New plasmonic materials (other than metals), or optical materials with metal-like behavior, have recently attracted a lot of attention due to the promise they hold to enable low-loss, tunable, CMOScompatible devices for photonic technologies. In this review, we provide a systematic overview of various compact optical modulator designs that utilize a class of the most promising new materials as the active layer or core— namely, transparent conducting oxides. Such modulators can be made low-loss, compact, and exhibit high tunability while offering low cost and compatibility with existing semiconductor technologies. A detailed analysis of different configurations and their working characteristics, such as their extinction ratio, compactness, bandwidth, and losses, is performed identifying the most promising designs.

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40

Amanti, Francesco, Greta Andrini, Fabrizio Armani, Fabrizio Barbato, Vittorio Bellani, Vincenzo Bonaiuto, Simone Cammarata et al. "Integrated Photonic Passive Building Blocks on Silicon-On-Insulator Platform". Photonics 11, n.º 6 (23 de mayo de 2024): 494. http://dx.doi.org/10.3390/photonics11060494.

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Integrated photonics on Silicon-On-Insulator (SOI) substrates is a well developed research field that has already significantly impacted various fields, such as quantum computing, micro sensing devices, biosensing, and high-rate communications. Although quite complex circuits can be made with such technology, everything is based on a few ’building blocks’ which are then combined to form more complex circuits. This review article provides a detailed examination of the state of the art of integrated photonic building blocks focusing on passive elements, covering fundamental principles and design methodologies. Key components discussed include waveguides, fiber-to-chip couplers, edges and gratings, phase shifters, splitters and switches (including y-branch, MMI, and directional couplers), as well as subwavelength grating structures and ring resonators. Additionally, this review addresses challenges and future prospects in advancing integrated photonic circuits on SOI platforms, focusing on scalability, power efficiency, and fabrication issues. The objective of this review is to equip researchers and engineers in the field with a comprehensive understanding of the current landscape and future trajectories of integrated photonic components on SOI substrates with a 220 nm thick device layer of intrinsic silicon.

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41

Kazanskiy, Nikolai Lvovich y Muhammad Ali Butt. "One-dimensional photonic crystal waveguide based on SOI platform for transverse magnetic polarization-maintaining devices". Photonics Letters of Poland 12, n.º 3 (30 de septiembre de 2020): 85. http://dx.doi.org/10.4302/plp.v12i3.1044.

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In this letter, a TM-polarization C-band pass one-dimensional photonic crystal strip waveguide (1D-PCSW) is presented. The waveguide structure is based on a silicon-on-insulator platform which is easy to realize using standard CMOS technology. The numerical study is conducted via 3D-finite element method (FEM). The transmittance and polarization extinction ratio (PER) is enhanced by optimizing the geometric parameters of the device. As a result, a TM polarized light can travel in the waveguide with ~2 dB loss for all C-band telecommunication wavelength window whereas the TE polarized light suffers a high transmission loss of >30 dB. As a result, a PER of ~28.5 dB can be obtained for the whole C-band wavelengths range. The total length of the proposed device is around 8.4 µm long including 1 µm silicon strip waveguide segment on both ends. Based on our study presented in this paper, several photonic devices can be realized where strict polarization filtering is required. Full Text: PDF ReferencesB. Wang, S. Blaize, R.S-Montiel, "Nanoscale plasmonic TM-pass polarizer integrated on silicon photonics", Nanoscale, 11, 20685 (2019). CrossRef D. Dai, J.E. Bowers, "Silicon-based on-chip multiplexing technologies and devices for Peta-bit optical interconnects", Nanophotonics, 3, 283 (2014). CrossRef M.A. Butt, S.N. Khonina, N.L. Kazanskiy, "Optical elements based on silicon photonics", Computer Optics, 43, 1079 (2019). CrossRef M.A. Butt, S.N. Khonina, N.L. Kazanskiy, "Compact design of a polarization beam splitter based on silicon-on-insulator platform", Laser Physics, 28, 116202 (2018). CrossRef M.A. Butt, S.N. Khonina, N.L. Kazanskiy, "A T-shaped 1 × 8 balanced optical power splitter based on 90° bend asymmetric vertical slot waveguides", Laser Physics, 29, 046207 (2019). CrossRef Q. Wang, S.-T. Ho, "Ultracompact TM-Pass Silicon Nanophotonic Waveguide Polarizer and Design", IEEE Photonics J., 2, 49 (2010). CrossRef C.-H. Chen, L. Pang, C.-H. Tsai, U. Levy, Y. Fainman, "Compact and integrated TM-pass waveguide polarizer", Opt. Express, 13, 5347 (2005). CrossRef S. Yuan, Y. Wang, Q. Huang, J. Xia, J. Yu, "Ultracompact TM-pass/TE-reflected integrated polarizer based on a hybrid plasmonic waveguide for silicon photonics", in 11th International Conference on Group IV Photonics (GFP) (IEEE, 2014), pp. 183-184. CrossRef X. Guan, P. Chen, S. Chen, P. Xu, Y. Shi, D. Dai, "Low-loss ultracompact transverse-magnetic-pass polarizer with a silicon subwavelength grating waveguide", Opt. Lett., 39, 4514 (2014). CrossRef A.E.- S. Abd-Elkader, M.F. O. Hameed, N.F. Areed, H.E.-D. Mostafa, and S.S. Obayya, "Ultracompact AZO-based TE-pass and TM-pass hybrid plasmonic polarizers", J.Opt. Soc. Am. B., 36, 652 (2019). CrossRef J. Li et al., "Photonic Crystal Waveguide Electro-Optic Modulator With a Wide Bandwidth", Journal of Lightwave Technology, 31, 1601-1607 (2013). CrossRef N. Skivesen et al., "Photonic-crystal waveguide biosensor", Optics Express, 15, 3169-3176 (2007). CrossRef S. Lin, J. Hu, L. Kimerling, K. Crozier, "Design of nanoslotted photonic crystal waveguide cavities for single nanoparticle trapping and detection", Optics Letters, 34, 3451-3453 (2009). CrossRef T. Liu, A.R. Zakharian, M. Fallahi, J.V. Moloney, M. Mansuripur, "Design of a compact photonic-crystal-based polarizing beam splitter", IEEE Photonics Technology Letters, 17, 1435-1437 (2005). CrossRef R. K. Sinha, Y. Kalra, "Design of optical waveguide polarizer using photonic band gap", Optics Express, 14, 10790 (2006). CrossRef

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42

Fan, Zhihua, Qinling Deng, Xiaoyu Ma y Shaolin Zhou. "Phase Change Metasurfaces by Continuous or Quasi-Continuous Atoms for Active Optoelectronic Integration". Materials 14, n.º 5 (7 de marzo de 2021): 1272. http://dx.doi.org/10.3390/ma14051272.

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In recent decades, metasurfaces have emerged as an exotic and appealing group of nanophotonic devices for versatile wave regulation with deep subwavelength thickness facilitating compact integration. However, the ability to dynamically control the wave–matter interaction with external stimulus is highly desirable especially in such scenarios as integrated photonics and optoelectronics, since their performance in amplitude and phase control settle down once manufactured. Currently, available routes to construct active photonic devices include micro-electromechanical system (MEMS), semiconductors, liquid crystal, and phase change materials (PCMs)-integrated hybrid devices, etc. For the sake of compact integration and good compatibility with the mainstream complementary metal oxide semiconductor (CMOS) process for nanofabrication and device integration, the PCMs-based scheme stands out as a viable and promising candidate. Therefore, this review focuses on recent progresses on phase change metasurfaces with dynamic wave control (amplitude and phase or wavefront), and especially outlines those with continuous or quasi-continuous atoms in favor of optoelectronic integration.

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43

Xi, Rui, Qiaolu Chen, Qinghui Yan, Li Zhang, Fujia Chen, Ying Li, Hongsheng Chen y Yihao Yang. "Topological Chiral Edge States in Deep‐Subwavelength Valley Photonic Metamaterials (Laser Photonics Rev. 16(11)/2022)". Laser & Photonics Reviews 16, n.º 11 (noviembre de 2022): 2270055. http://dx.doi.org/10.1002/lpor.202270055.

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44

Fedyanin, Dmitry Yu, Alexey V. Krasavin, Aleksey V. Arsenin y Anatoly V. Zayats. "Lasing at the nanoscale: coherent emission of surface plasmons by an electrically driven nanolaser". Nanophotonics 9, n.º 12 (20 de julio de 2020): 3965–75. http://dx.doi.org/10.1515/nanoph-2020-0157.

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AbstractPlasmonics offers a unique opportunity to break the diffraction limit of light and bring photonic devices to the nanoscale. As the most prominent example, an integrated nanolaser is a key to truly nanoscale photonic circuits required for optical communication, sensing applications and high-density data storage. Here, we develop a concept of an electrically driven subwavelength surface-plasmon-polariton nanolaser, which is based on a novel amplification scheme, with all linear dimensions smaller than the operational free-space wavelength λ and a mode volume of under λ3/30. The proposed pumping approach is based on a double-heterostructure tunneling Schottky barrier diode and gives the possibility to reduce the physical size of the device and ensure in-plane emission so that the nanolaser output can be naturally coupled to a plasmonic or nanophotonic waveguide circuitry. With the high energy efficiency (8% at 300 K and 37% at 150 K), the output power of up to 100 μW and the ability to operate at room temperature, the proposed surface plasmon polariton nanolaser opens up new avenues in diverse application areas, ranging from ultrawideband optical communication on a chip to low-power nonlinear photonics, coherent nanospectroscopy, and single-molecule biosensing.

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45

Yang, Frank, Ciril S. Prasad, Weijian Li, Rosemary Lach, Henry O. Everitt y Gururaj V. Naik. "Non-Hermitian metasurface with non-trivial topology". Nanophotonics 11, n.º 6 (2 de febrero de 2022): 1159–65. http://dx.doi.org/10.1515/nanoph-2021-0731.

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Abstract The synergy between topology and non-Hermiticity in photonics holds immense potential for next-generation optical devices that are robust against defects. However, most demonstrations of non-Hermitian and topological photonics have been limited to super-wavelength scales due to increased radiative losses at the deep-subwavelength scale. By carefully designing radiative losses at the nanoscale, we demonstrate a non-Hermitian plasmonic–dielectric metasurface in the visible with non-trivial topology. The metasurface is based on a fourth order passive parity-time symmetric system. The designed device exhibits an exceptional concentric ring in its momentum space and is described by a Hamiltonian with a non-Hermitian Z 3 ${\mathbb{Z}}_{3}$ topological invariant of V = −1. Fabricated devices are characterized using Fourier-space imaging for single-shot k-space measurements. Our results demonstrate a way to combine topology and non-Hermitian nanophotonics for designing robust devices with novel functionalities.

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46

Couteau, C., A. Larrue, C. Wilhelm y C. Soci. "Nanowire Lasers". Nanophotonics 4, n.º 1 (20 de mayo de 2015): 90–107. http://dx.doi.org/10.1515/nanoph-2015-0005.

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Abstract:We review principles and trends in the use of semiconductor nanowires as gain media for stimulated emission and lasing. Semiconductor nanowires have recently been widely studied for use in integrated optoelectronic devices, such as light-emitting diodes (LEDs), solar cells, and transistors. Intensive research has also been conducted in the use of nanowires for subwavelength laser systems that take advantage of their quasione- dimensional (1D) nature, flexibility in material choice and combination, and intrinsic optoelectronic properties. First, we provide an overview on using quasi-1D nanowire systems to realize subwavelength lasers with efficient, directional, and low-threshold emission. We then describe the state of the art for nanowire lasers in terms of materials, geometry, andwavelength tunability.Next,we present the basics of lasing in semiconductor nanowires, define the key parameters for stimulated emission, and introduce the properties of nanowires. We then review advanced nanowire laser designs from the literature. Finally, we present interesting perspectives for low-threshold nanoscale light sources and optical interconnects. We intend to illustrate the potential of nanolasers inmany applications, such as nanophotonic devices that integrate electronics and photonics for next-generation optoelectronic devices. For instance, these building blocks for nanoscale photonics can be used for data storage and biomedical applications when coupled to on-chip characterization tools. These nanoscale monochromatic laser light sources promise breakthroughs in nanophotonics, as they can operate at room temperature, can potentially be electrically driven, and can yield a better understanding of intrinsic nanomaterial properties and surface-state effects in lowdimensional semiconductor systems.

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47

Chen, Weijin, Yuntian Chen y Wei Liu. "Photonics: Multipolar Conversion Induced Subwavelength High‐Q Kerker Supermodes with Unidirectional Radiations (Laser Photonics Rev. 13(9)/2019)". Laser & Photonics Reviews 13, n.º 9 (septiembre de 2019): 1970036. http://dx.doi.org/10.1002/lpor.201970036.

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48

Zhong, Qiuhang, Venkat Veerasubramanian, Yun Wang, Wei Shi, David Patel, Samir Ghosh, Alireza Samani, Lukas Chrostowski, Richard Bojko y David V. Plant. "Focusing-curved subwavelength grating couplers for ultra-broadband silicon photonics optical interfaces". Optics Express 22, n.º 15 (21 de julio de 2014): 18224. http://dx.doi.org/10.1364/oe.22.018224.

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Habib, Ahsan, Xiangchao Zhu, Sabrina Fong y Ahmet Ali Yanik. "Active plasmonic nanoantenna: an emerging toolbox from photonics to neuroscience". Nanophotonics 9, n.º 12 (1 de septiembre de 2020): 3805–29. http://dx.doi.org/10.1515/nanoph-2020-0275.

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AbstractConcepts adapted from radio frequency devices have brought forth subwavelength scale optical nanoantenna, enabling light localization below the diffraction limit. Beyond enhanced light–matter interactions, plasmonic nanostructures conjugated with active materials offer strong and tunable coupling between localized electric/electrochemical/mechanical phenomena and far-field radiation. During the last two decades, great strides have been made in development of active plasmonic nanoantenna (PNA) systems with unconventional and versatile optical functionalities that can be engineered with remarkable flexibility. In this review, we discuss fundamental characteristics of active PNAs and summarize recent progress in this burgeoning and challenging subfield of nano-optics. We introduce the underlying physical mechanisms underpinning dynamic reconfigurability and outline several promising approaches in realization of active PNAs with novel characteristics. We envision that this review will provide unambiguous insights and guidelines in building high-performance active PNAs for a plethora of emerging applications, including ultrabroadband sensors and detectors, dynamic switches, and large-scale electrophysiological recordings for neuroscience applications.

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50

Xu, Xiaochuan, Harish Subbaraman, John Covey, David Kwong, Amir Hosseini y Ray T. Chen. "Complementary metal–oxide–semiconductor compatible high efficiency subwavelength grating couplers for silicon integrated photonics". Applied Physics Letters 101, n.º 3 (16 de julio de 2012): 031109. http://dx.doi.org/10.1063/1.4737412.

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