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Letteratura scientifica selezionata sul tema "Photonic crystal resonator"

Autore: Grafiati

Pubblicato: 25 gennaio 2025

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Articoli di riviste sul tema "Photonic crystal resonator"

Olyaee, Saeed. "Ultra-fast and compact all-optical encoder based on photonic crystal nano-resonator without using nonlinear materials". Photonics Letters of Poland 11, n. 1 (3 aprile 2019): 10. http://dx.doi.org/10.4302/plp.v11i1.890.

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In this paper an ultra-compact all-optical encoder is presented by using a two-dimensional photonic crystal. The designed logic gate is based on the interference effect. The proposed structure consists of several photonic crystal waveguides connected by 2 nano-resonators. The nano-resonators are designed to reduce the size of the radius of the dielectric rods. The contrast ratios and delay time for the proposed all-optical encoder are respectively 6 dB and 125 fs. The size of the structure is equal to 132 µm2. Equality of the output power in the logic states “one”, the small dimensions, the low delay time, compact and simple structure have shown that the logic gate is suitable for the using in optical integrated circuits. Full Text: PDF ReferencesA. Salmanpour, Sh. Mohammadnejad, A. Bahrami, "Photonic crystal logic gates: an overview", Optical and Quantum Electronics. 47, 2249 (2015). CrossRef S. C. Xavier, B. E. Carolin, A. p. Kabilan, W. Johnson, "Compact photonic crystal integrated circuit for all-optical logic operation", IET Optoelectronics. 10, 142 (2016). CrossRef Y. Miyoshi, K. Ikeda, H. Tobioka, T. Inoue, S. Namiki, K. Kitayama, "Ultrafast all-optical logic gate using a nonlinear optical loop mirror based multi-periodic transfer function", Optics Express. 16, 2570 (2008). CrossRef D. K. Gayen, A. Bhattachryya, T. Chattopadhyay, J. N. Roy, "Ultrafast All-Optical Half Adder Using Quantum-Dot Semiconductor Optical Amplifier-Based Mach-Zehnder Interferometer", Journal of Lightwave Technology. 30, 3387 (2012). CrossRef A. Mohebzadeh-Bahabady, S. Olyaee, "All-optical NOT and XOR logic gates using photonic crystal nano-resonator and based on an interference effect", IET Optoelectronics. 12, 191 (2018). CrossRef Z. Mohebbi, N. Nozhat, F. Emami, "High contrast all-optical logic gates based on 2D nonlinear photonic crystal", Optics Communications. 355, 130 (2015). CrossRef M. Mansouri-Birjandi, M. Ghadrdan, "Full-optical tunable add/drop filter based on nonlinear photonic crystal ring resonators", Photonics and Nanostructures-Fundamentals and Applications. 21, 44 (2016). CrossRef H. Alipour-Banaei, S. Serajmohammadi, F. Mehdizadeh, "Effect of scattering rods in the frequency response of photonic crystal demultiplexers", Journal of Optoelectronics and Advanced Materials. 17, 259 (2015). DirectLink A. Mohebzadeh-Bahabady, S. Olyaee, H. Arman, "Optical Biochemical Sensor Using Photonic Crystal Nano-ring Resonators for the Detection of Protein Concentration", Current Nanoscience. 13, 421 (2017). CrossRef S. Olyaee, A. Mohebzadeh-Bahabady, "Designing a novel photonic crystal nano-ring resonator for biosensor application", Optical and Quantum Electronics. 47, 1881 (2015). CrossRef F. Parandin, R. Malmir, M. Naseri, A. Zahedi, "Reconfigurable all-optical NOT, XOR, and NOR logic gates based on two dimensional photonic crystals", Superlattices and Microstructures. 113, 737 (2018). CrossRef F. Mehdizadeh, M. Soroosh, H. Alipour-Banaei, "Proposal for 4-to-2 optical encoder based on photonic crystals", IET Optoelectronics. 11, 29 (2017). CrossRef M. Hassangholizadeh-Kashtiban, R. Sabbaghi-Nadooshan, H. Alipour-Banaei, "A novel all optical reversible 4 × 2 encoder based on photonic crystals", Optik. 126, 2368 (2015). CrossRef T. A. Moniem, "All-optical digital 4 × 2 encoder based on 2D photonic crystal ring resonators", Journal of Modern Optics. 63, 735 (2016). CrossRef S. Gholamnejad, M. Zavvari, "Design and analysis of all-optical 4–2 binary encoder based on photonic crystal", Optical and Quantum Electronics. 49, 302 (2017). CrossRef H. Seif-Dargahi, "Ultra-fast all-optical encoder using photonic crystal-based ring resonators", Photonic Network Communications. 36, 272 (2018). CrossRef S. Olyaee, M. Seifouri, A. Mohebzadeh-Bahabady, and M. Sardari, "Realization of all-optical NOT and XOR logic gates based on interference effect with high contrast ratio and ultra-compacted size", Optical and Quantum Electronics. 50, 12 (2018). CrossRef C. J. Wu, C. P. Liu, Z. Ouyang, "Compact and low-power optical logic NOT gate based on photonic crystal waveguides without optical amplifiers and nonlinear materials", Applied Optics.51, 680 (2012). CrossRef Y. C. Jiang, S. B. Liu, H. F. Zhang, X. K. Kong. "Realization of all optical half-adder based on self-collimated beams by two-dimensional photonic crystals", Optics Communications. 348, 90 (2015). CrossRef A. Salmanpour, S. Mohammadnejad, P. T. Omran, "All-optical photonic crystal NOT and OR logic gates using nonlinear Kerr effect and ring resonators", Optical and Quantum Electronics. 47, 3689 (2015). CrossRef E. H. Shaik, N. Rangaswamy, "Single photonic crystal structure for realization of NAND and NOR logic functions by cascading basic gates", Journal of Computational Electronics. 17, 337 (2018). CrossRef

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Glushko, E. Ya, O. E. Glushko e L. A. Karachevtseva. "Photonic Eigenmodes in a Photonic Crystal Membrane". ISRN Optics 2012 (1 marzo 2012): 1–6. http://dx.doi.org/10.5402/2012/373968.

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Photonic membranes are the most widely used kind of 2D photonic crystals in signal processing. Nevertheless, some important aspects of electromagnetic field behavior in membrane like photonic crystals (MPCs) need detail investigation. We develop the approach close to resonant coupling modes method which unites both external and intrinsic problems, in-plane and out-of-plane geometries, and resonator properties of MPC. The resonator standing modes are excited by an external source through the special inputs and may be controlled due to the nonlinear coating. Typical photonic manifestations are studied for Si/SiO2 2D membrane resonators of rectangular.

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Glushko, E. Ya. "Island-Kind 2D Photonic Crystal Resonator". Ukrainian Journal of Physics 62, n. 11 (dicembre 2017): 945–52. http://dx.doi.org/10.15407/ujpe62.11.0945.

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Tsarev, V. A., A. Yu Miroshnichenko, A. V. Gnusarev e N. A. Akafyeva. "Investigation of the Two-Mode Regime of Two-Gap Photonic-Crystal Resonance Systems Produced on a Printed Circuit Board with Fractal Elements "Minkowski Island". Journal of the Russian Universities. Radioelectronics 24, n. 5 (29 novembre 2021): 80–88. http://dx.doi.org/10.32603/1993-8985-2021-24-5-80-88.

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Introduction. The development of new amplifiers and generators of the Ku- and K-bands (12…27 GHz) for use in onboard equipment is increasingly attracting research interest. Low-voltage multi-beam klystrons (LMBK) can be a promising element base for such devices. Serious problems are associated with the need to suppress parasitic modes of oscillations in NMLK operating in the centimeter and millimeter range. A possible solution is to use double-gap photonic-crystal resonators (DPCR) in LMBK. Another promising direction for improving the characteristics of such resonators is to use resonant segments of strip lines with fractal elements. In this case, the strip lines are placed on a dielectric substrate in the interaction space. Such resonators exhibit new properties that are useful for klystrons (an increase in characteristic impedance, suppression of the spectrum of unwanted frequencies, a reduction in mass and dimensions).Aim. Determination of an optimal set of electrodynamic and electronic parameters of double-gap photonic-crystal resonance systems with fractal elements "Minkowski Island" when operated as part of the LMBK resonator system, excited on π- and 2π-modes of oscillation.Materials and methods. To calculate the electrodynamic parameters of resonators, the method of finite differences in the time domain was used. The well-known Wessel-Berg method was used to calculate electronic parameters, such as the Ge / G0 electronic conductivity and the coupling coefficient M.Results. The main electrodynamic parameters of the resonator – Q-factor, resonant frequency and characteristic impedance – were investigated. The electronic parameters of the resonator, the coefficient of coupling with the electron beam, and the relative electronic conductivity for π- and 2π-modes of oscillations were calculated. In this case, three variants of the resonator with zero, first and second iterations of the fractal element were investigated. The amplitude-frequency characteristics of the resonator were investigated with a change in the pitch of the photonic crystal lattice. An estimation of the inhomogeneity of the high-frequency field in the interaction spaces of the resonator was carried out. Operational conditions were determined simultaneously for two types of oscillations without self-excitation.Conclusion. The results can find application in the development of resonator systems for klystron-type devices in the centimeter and millimeter ranges.

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Swarnakar, Sandip, Sapna Rathi e Santosh Kumar. "Design of All Optical XOR Gate based on Photonic Crystal Ring Resonator". Journal of Optical Communications 41, n. 1 (18 dicembre 2019): 51–56. http://dx.doi.org/10.1515/joc-2017-0142.

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Abstract The photonic crystals (PhC) play an important role in building all optical logic devices and also recommended as solution for opto-electronic bottleneck in terms of speed and size. This paper put forward a design of XOR gate using Photonic Crystal Ring Resonator (PCRR). The ring resonator is a device which provides output on the basis of coupling of mode fields from a linear waveguide to circular ring. The proposed work is designed using two-dimensional (2D) square lattice photonic crystals within the dimensions of $\left( {37a \times 37a} \right)$ by putting silicon (Si) rods in silica (SiO2). The study of device is carried out using finite-difference-time-domain (FDTD) method and verified using MATLAB.

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Jannesari, Reyhaneh, Thomas Grille e Bernhard Jakoby. "Highly sensitive fluid sensing due to slow light in pillar-based photonic crystal ring resonators". tm - Technisches Messen 85, n. 7-8 (26 luglio 2018): 515–20. http://dx.doi.org/10.1515/teme-2017-0135.

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Abstract A design for a high quality factor photonic crystal ring resonator (PCRR) is presented. The PCRR is based on pillar type photonic crystals, which consist of a hexagonal array of silicon rods. The cavity is created by removing elements from the regular photonic crystal (PhC) grid. Achieving strong confinement of light intensity in the low index region is the advantage of this PCRR. In that manner, the interaction of light and analyte, which can be a liquid or a gas, will be enhanced. The high quality factor of the cavity (Q=1.0229\times {10}^{5}), along with strong overlap between the field of the resonant mode and the analyte as well as the low group velocity of PCRR modes yield enhanced light-matter interaction. An enhancement factor of \gamma =2.127\times {10}^{4} compared to the bulk light absorption in a homogenous material provides the potential for highly sensitive gas detection with a photonic crystal ring resonator.

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Wang, Feng, Chang Yu Ren, Dun Liang Ren, Bing Sheng Liu e Ren Xue Han. "Analyzing the Modality of Two-Dimensional Photonic Crystal Fiber Optical Micro-Resonators by Equivalent Refractive Index Mode". Applied Mechanics and Materials 44-47 (dicembre 2010): 2131–35. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.2131.

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This paper analyzes the modality of two-dimensional photonic crystal micro-resonators by adopting equivalent refractive index mode. In this paper, it controls the optical field distribution only through altering the thickness of light guide layer, while the parameter like resonator structure and crystal lattice arrangement remain stable. It discusses that it would arrive at a satisfactory photon locality while the refractive index of light guide layer material is gallium nitride , the thickness of light guide layer is and its equivalent refractive index is 2.1.This reveals the influence of micro-resonator light guide layer’s thickness towards the modality, providing a preferable pre-estimate method for the actual research of micro-resonators with higher quality.

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Nardi, Alberto, Alisa Davydova, Nikolai Kuznetsov, Miles H. Anderson, Charles Möhl, Johann Riemensberger, Tobias J. Kippenberg e Paul Seidler. "Integrated chirped photonic-crystal cavities in gallium phosphide for broadband soliton generation". Optica 11, n. 10 (16 ottobre 2024): 1454. http://dx.doi.org/10.1364/optica.530247.

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Chirped mirrors have underpinned advances in ultra-fast lasers based on bulk optics but have yet to be fully exploited in integrated photonics, where they could provide a means to engineer otherwise unattainable dispersion profiles for a range of nonlinear optical applications, including soliton frequency comb generation. The vast majority of integrated resonators for frequency combs make use of microring geometries, in which only waveguide width and height are varied to engineer dispersion. Here, we present an integrated photonic-crystal Fabry–Pérot resonator made of gallium phosphide (GaP), a material exhibiting a Kerr nonlinearity 200 times larger than that of silicon nitride and a high refractive index that permits the creation of strongly chirped photonic-crystal mirrors. Leveraging the additional degrees of freedom provided by integrated chirped mirrors, we disentangle optical losses from dispersion. We obtain an overall dispersion that is more anomalous than that achievable in both silicon nitride and gallium phosphide ring resonators with the same free-spectral range (FSR), while simultaneously obtaining higher quality factors than those of GaP ring resonators. With subharmonic pulsed pumping at an average power of 23.6 mW, we are able to access stable dissipative Kerr frequency combs in a device with a FSR of 55.9 GHz. We demonstrate soliton formation with a 3-dB bandwidth of 3.0 THz, corresponding to a pulse duration of 60 fs. This approach to cavity design based on photonic-crystal reflectors offers nearly arbitrary dispersion engineering over the optical transparency window of the nonlinear material.

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Zhao, Yixiong, Kunj Himanshu Vora, Gerd vom Bögel, Karsten Seidl e Jens Weidenmüller. "Design and simulation of a photonic crystal resonator as a biosensor for point-of-care applications". tm - Technisches Messen 87, n. 7-8 (26 luglio 2020): 470–76. http://dx.doi.org/10.1515/teme-2019-0127.

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AbstractPoint-of-care (POC) devices are essential for rapid testing of samples for early diagnosis of diseases. The accuracy and the sensitivity of the POC device depend mainly on the biosensors. The currently used POC devices require specialized operating personnel, long sample preparation time and high equipment costs. We aim to explain a bio-sensing concept using a photonic crystal (PC) resonator that would mitigate the drawbacks of the present sensing techniques. Photonic crystals consist of spatially arranged dielectric materials presenting a band gap that prevents electromagnetic waves of certain frequency range to propagate through it. PC resonators have shown to have very high sensitivities for bio-sensing applications at THz frequencies. A PC resonator with a high Q-factor is designed and simulated to detect the changes in the surrounding dielectric permittivity. As an application for detecting specific biomolecules, a protocol for surface functionalization has been explained. This will enable the selective binding of biomolecules from the sample. Shift in resonant frequency and attenuation in magnitude at the peak resonant frequency can be observed from the simulation results. These changes in the resonator properties can be indicative of the presence of a particular biomolecule or pathogen and its concentration within the sample.

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Liu, Hanqing, Jianfeng Tan, Peiguo Liu, Li-an Bian e Song Zha. "Tunable Coupled-Resonator-Induced Transparency in a Photonic Crystal System Based on a Multilayer-Insulator Graphene Stack". Materials 11, n. 10 (19 ottobre 2018): 2042. http://dx.doi.org/10.3390/ma11102042.

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We achieve the effective modulation of coupled-resonator-induced transparency (CRIT) in a photonic crystal system which consists of photonic crystal waveguide (PCW), defect cavities, and a multilayer graphene-insulator stack (MGIS). Simulation results show that the wavelength of transparency window can be effectively tuned through varying the chemical potential of graphene in MGIS. The peak value of the CRIT effect is closely related to the structural parameters of our proposed system. Tunable Multipeak CRIT is also realized in the four-resonator-coupled photonic crystal system by modulating the chemical potentials of MGISs in different cavity units. This system paves a novel way toward multichannel-selective filters, optical sensors, and nonlinear devices.

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Più fonti

Tesi sul tema "Photonic crystal resonator"

Smith, Cameron. "Reconfigurable Photonic Crystal Cavities". Thesis, The University of Sydney, 2009. http://hdl.handle.net/2123/4988.

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Photonic crystals are optical structures that contain a periodic modulation of their refractive index, allowing them to control light in recent years of an unprecedented capacity. Photonic crystals may take on a variety of configurations, in particular the photonic crystal cavity, which may “hold” light in small volumes comparable to the light’s wavelength. This capability to spatially confine light opens up countless possibilities to explore for research in telecommunications, quantum electrodynamics experiments and high-resolution sensor applications. However, the vast functionality potentially made available by photonic crystal cavities is limited due to the difficulty in redefining photonic crystal components once they are formed in their (typically) solid material. The work presented in this thesis investigates several approaches to overcome this issue by reconfiguring photonic crystal cavities.

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Smith, Cameron. "Reconfigurable Photonic Crystal Cavities". University of Sydney, 2009. http://hdl.handle.net/2123/4988.

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Doctor of Philosophy (PhD)
Photonic crystals are optical structures that contain a periodic modulation of their refractive index, allowing them to control light in recent years of an unprecedented capacity. Photonic crystals may take on a variety of configurations, in particular the photonic crystal cavity, which may “hold” light in small volumes comparable to the light’s wavelength. This capability to spatially confine light opens up countless possibilities to explore for research in telecommunications, quantum electrodynamics experiments and high-resolution sensor applications. However, the vast functionality potentially made available by photonic crystal cavities is limited due to the difficulty in redefining photonic crystal components once they are formed in their (typically) solid material. The work presented in this thesis investigates several approaches to overcome this issue by reconfiguring photonic crystal cavities.

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Oliveira, Eduardo M. A. "Thermal and quantum analysis of a stored state in a photonic crystal CROW structure". Link to electronic thesis, 2007. http://www.wpi.edu/Pubs/ETD/Available/etd-112007-105238/.

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Thesis (M.S.) -- Worcester Polytechnic Institute.
Keywords: CROW; PBG; PhC; coupled resonator optical waveguide; metamaterials; photonic crystal; Bloch wave; photonic band gap;dynamic waveguide; Brillouin zone; thermal spreading. Includes bibliographical references (p. 84-87).

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Lou, Fei. "Design, fabrication and characterization of plasmonic components based on silicon nanowire platform". Doctoral thesis, KTH, Optik och Fotonik, OFO, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-143953.

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Optical interconnects based on CMOS compatible photonic integrated circuits are regarded as a promising technique to tackle the issues traditional electronics faces, such as limited bandwidth, latency, vast energy consumption and so on. In recent years, plasmonic integrated components have gained great attentions due to the properties of nano-scale confinement, which may potentially bridge the size mismatch between photonic and electronic circuits. Based on silicon nanowire platform, this thesis work studies the design, fabrication and characterization of several integrated plasmonic components, aiming to combine the benefits of Si and plasmonics. The basic theories of surface plasmon polaritons are introduced in the beginning, where we explain the physics behind the diffraction-free confinement. Numerical methods frequently used in the thesis including finite-difference time-domain method and finite-element method are then reviewed. We summarize the device fabrication techniques such as film depositions, e-beam lithography and inductively coupled plasma etching as well as characterization methods, such as direct measurement method, butt coupling, grating coupling etc. Fabrication results of an optically tunable silicon-on-insulator microdisk and III-V cavities in applications as light sources for future nanophotonics interconnects are briefly discussed. Afterwards we present in details the experimental demonstrations and novel design of plasmonic components. Hybrid plasmonic waveguides and directional couplers with various splitting ratios are firstly experimentally demonstrated. The coupling length of two 170 nm wide waveguides with a separation of 140 nm is only 1.55 µm. Secondly, an ultracompact polarization beam splitter with a footprint of 2×5.1 μm2 is proposed. The device features an extinction ratio of 12 dB and an insertion loss below 1.5 dB in the entire C-band. Thirdly, we show that plasmonics offer decreased bending losses and enhanced Purcell factor for submicron bends. Novel hybrid plasmonic disk, ring and donut resonators with radii of ~ 0.5 μm and 1 μm are experimentally demonstrated for the first time. The Q-factor of disks with 0.5 μm radii are , corresponding to Purcell factors of . Thermal tuning is also presented. Fourthly, we propose a design of electro-optic polymer modulator based on plasmonic microring. The figure of merit characterizing modulation efficiency is 6 times better comparing with corresponding silicon slot polymer modulator. The device exhibits an insertion loss below 1 dB and a power consumption of 5 fJ/bit at 100 GHz. At last, we propose a tightly-confined waveguide and show that the radius of disk resonators based on the proposed waveguide can be shrunk below 60 nm, which may be used to pursue a strong light-matter interaction. The presented here novel components confirm that hybrid plasmonic structures can play an important role in future inter- and intra-core computer communication systems.

QC 20140404

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Makles, Kevin. "Nano-membranes à cristal photonique pour l'optomécanique". Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066457/document.

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Dans ce manuscrit, nous présentons le développement d'un résonateur optimisé pour observer des effets quantiques du couplage entre un resonateur mécanique et le champ electromagnétique via la pression de radiation. Celui-ci doit combiner une réflectivité élevée, une faible masse, ainsi qu'un facteur de qualité mécanique élevé. Le résonateur consiste en une membrane suspendue de quelques centaines de nanomètres d’épaisseur, et de quelques dizaines de microns de côté, présentant une réflectivité importante grâce à l'utilisation de cristaux photoniques. Après une étude détaillée de la physique d'un cristal photonique en incidence normale, nous présentons les résultats expérimentaux, en bon accord avec des simulations optiques, notamment lorsque la membrane est utilisée comme miroir de fond d’une cavité Fabry-Perot. Dans un second point, nous passons en revue les mécanismes d'amortissement mécanique à l’œuvre dans les micro-résonateurs. Nous montrons ensuite comment l'introduction de contraintes peut améliorer leur facteur de qualité. Nous finissons la caractérisation mécanique par l'étude de non-linéarités apparaissant lors des grandes amplitudes de mouvement. Puis nous présentons le montage expérimental permettant l'observation du bruit thermique de ces resonateurs. Celui-ci a également permis d'obtenir des résultats préliminaires sur le refroidissement de leur bruit thermique par friction froide et par effet photothermique. Enfin, nous présentons le développement d’un système de couplage capacitif entre la membrane et un circuit électrique, constituant la première étape de la réalisation d’un transducteur optomécanique entre photons optiques et micro-ondes
The field of optomechanic consists in studying the coupling induce by the radiation pressure between a mechanical resonator and a light field, it has expended over the last fifteen years. In this memoir we present the developpement of a resonator optimised to observe quantum effect of the optomechanical coupling. On the one hand, it has to combine a high reflectivity and a low mass to enhance its coupling with the light field. On the other hand it should exhibit high mechanical quality factor in order to minimize its interaction with the environment. This resonator is a suspended membrane, whose thickness is about hundreds of nanometers, and whose reflectivity is achieved thanks to a photonic crystal. After a study of the photonic crystal physic in normal incidence, we present the experimental results including those in the end mirror of a Fabry-Pérot cavity configuration, which are in good agreement with the optical simulations. In a second point, we list the dissipation mechanisms in micro-resonator. Then we show how the stress introduction in such resonators can improve the quality factor. We finish the mechanical characterisation by studying mechanical non-linearities which appears in the case of large amplitude of motion. Then we present the experimental set-up developed to observe the thermal noise of the resonators. We also obtain some preliminary results about the cooling of the thermal noise using active cooling and photothermal effect. Last we present the development of a capacitive coupling between the membrane and a electrical circuit. This device is the first step toward the realisation of an optomechanical transducer between optical and micro-wave photons

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Căbuz, Alexandru Ioan. "Métamatériaux Electromagnétiques - Des Cristaux Photoniques aux Composites à Indice Négatif". Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2007. http://tel.archives-ouvertes.fr/tel-00161428.

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Composite metamaterials are periodic metal-dielectric structures operating at wavelengths larger than the structure period. If properly designed these structures behave as homogeneous media described by effective permittivity and permeability parameters. These effective parameters can be designed to take values in domains that are not available in naturally occurring media; notably it is possible to design composite metamaterials with simultaneously negative permittivity and permeability, or, in other words, with a negative refractive index. However, in many experimental or numerical studies it is far from obvious that the use of a homogeneous model is justified for a given structure at a given wavelength. This issue is often glossed over in the literature.
In this work I take a detailed look at the fundamental assumptions on which effective medium models rely and put forward a method for determining frequency domains where a given structure may or may not be accurately described by homogeneous effective medium parameters. This work opens the door to a more detailed understanding of the transition between homogeneous and inhomogeneous behavior in composite metamaterials, in particular by introducing the novel notions of custom made effective medium model, and of meta-photonic crystal.

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Burr, Justin R. "Degenerate Band Edge Resonators in Silicon Photonics". The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1449233730.

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Lee, Jonathan Chaosung. "Fabrication and Characterization of Single-Crystal Diamond Photonic Cavities". Thesis, Harvard University, 2013. http://dissertations.umi.com/gsas.harvard:10964.

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Cavity quantum electrodynamics provide a platform to form a quantum network which connects individual quantum bits (qubits) via photon. Optical cavity, a device which traps photons in a confined volume can enhance the interaction between photons and the qubits serves as fundamental building block for a quantum network. Nitrogen vacancy (NV) centers in diamond has emerged as one of the leading solid-state qubits because of its long spin coherence time and single photon emission properties at room temperature. Diamond optical micro-cavities are highly sought after for coupling with NV centers. Fabrication of optical cavities from nano-crystalline diamond film has been demonstrated previously. The quality factor (Q) of such devices was limited by the material properties of the nano-crystalline diamond film. Fabrication of single-crystal diamond photonic cavities is challenging because there is no trivial way to form thin diamond film with optical isolation. In this thesis, we describe an approach to fabricate high quality single-crystal diamond optical cavities for coupling to NV centers in diamond. ingle-crystal diamond membranes were generated using an ion-slicing method. Whispering gallery modes were observed for the first time from microdisk cavities made from such material. However, the cavity Q (∼ 500) was limited by the ion damage created during processing. By using an homo-epitaxial overgrowth method, a high quality diamond film can be grown on the ion damaged membranes. Microdisk cavities with Q ∼ 3,000 were fabricated on these improved materials. Diamond membranes with a delta-doped layer of NV can be made using a slow overgrowth process which demonstrate the position and density of NV centers can be controlled in these membranes. Photonic crystal cavities with Q ∼ 4,000 were fabricated from the delta-doped membranes with cavity resonance near the zero phonon line of NV centers. Different color centers can also be introduced during the overgrowth process, and optical coupling of an ensemble of silicon vacancy centers is demonstrated by coupling to a diamond microdisk cavity. We believe the techniques developed in this thesis could contribute to building of a quantum photonic network using diamond as a platform.
Engineering and Applied Sciences

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Al, Johani Ebrahim Dakhil. "NIR silicon photodetector enhancement using photonic crystal cavity resonators". Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/128418.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Physics, 2019
Cataloged from PDF of thesis. "The Table of Contents does not accurately represent the page numbering"--Disclaimer page.
Includes bibliographical references (pages 45-47).
The growing demand for efficient infrared sensors for light ranging, thermal-cameras, and soon, free-space optical communications has yet to be answered. In this study, we use polycrystalline silicon in conjunction with a photonic crystal cavity (PhCC) to enhance light absorption for efficient sensing. We present a cost-effective alternative to the current III-V detectors. By adding a 2D-PhC resonator layer, surface-illuminated light can be confined within a 10 micron region with great intensity, leading to a higher effective path-length and improved detector responsivity. More than 1000 variants of this detector are designed and implemented in a 65nm CMOS process. Using a nearest neighbor method, we find the optimized designs. We validate experimental findings by simulating mode behavior of the PhCC structures using FDTD models. In addition, a numerical study on cavity parameter optimization for achieving high Q-factors and extinction ratios specifically for surface-illumination is presented. We report polysilicon PhCC-enhanced sensors with Q-factors of 6500 resulting in responsivities at 1300nm up to 0.13mA/W -a 25x improvement over non-resonant surface-illuminated Silicon detectors.
by Ebrahim Dakhil Al Johani.
S.B.
S.B. Massachusetts Institute of Technology, Department of Physics

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Tsvirkun, Viktor. "Optomechanics in hybrid fully-integrated two-dimensional photonic crystal resonators". Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112176/document.

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Les systèmes optomécaniques, dans lesquels les vibrations d'un résonateur mécanique sont couplées à un rayonnement électromagnétique, ont permis l'examen de multiples nouveaux effets physiques. Afin d'exploiter pleinement ces phénomènes dans des circuits réalistes et d'obtenir différentes fonctionnalités sur une seule puce, l'intégration des résonateurs optomécaniques est obligatoire. Ici nous proposons une nouvelle approche pour la réalisation de systèmes intégrés et hétérogènes comportant des cavités à cristaux photoniques bidimensionnels au-dessus de guides d'ondes en silicium-sur-isolant. La réponse optomécanique de ces dispositifs est étudiée et atteste d'un couplage optomécanique impliquant à la fois les mécanismes dispersifs et dissipatifs. En contrôlant le couplage optique entre le guide d'onde intégré et le cristal photonique, nous avons pu varier et comprendre la contribution relative de ces couplages. Cette plateforme évolutive permet un contrôle sans précédent sur les mécanismes de couplage optomécanique, avec un avantage potentiel dans des expériences de refroidissement et pour le développement de circuits optomécaniques multi-éléments pour des applications tels que le traitement du signal par effets optomécaniques
Optomechanical systems, in which the vibrations of a mechanical resonator are coupled to an electromagnetic radiation, have permitted the investigation of a wealth of novel physical effects. To fully exploit these phenomena in realistic circuits and to achieve different functionalities on a single chip, the integration of optomechanical resonators is mandatory. Here, we propose a novel approach to heterogeneously integrated arrays of two-dimensional photonic crystal defect cavities on top of silicon-on-insulator waveguides. The optomechanical response of these devices is investigated and evidences an optomechanical coupling involving both dispersive and dissipative mechanisms. By controlling optical coupling between the waveguide and the photonic crystal, we were able to vary and understand the relative strength of these couplings. This scalable platform allows for unprecedented control on the optomechanical coupling mechanisms, with a potential benefit in cooling experiments, and for the development of multi-element optomechanical circuits in the frame of optomechanically-driven signal-processing applications

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Vučković, Jelena. Quantum optics and cavity QED with quantum dots in photonic crystals. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198768609.003.0008.

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Quantum dots in optical nanocavities are interesting as a test-bed for fundamental studies of light–matter interaction (cavity quantum electrodynamics, QED), as well as an integrated platform for information processing. As a result of the strong field localization inside sub-cubic-wavelength volumes, these dots enable very large emitter–field interaction strengths. In addition to their use in the study of new regimes of cavity QED, they can also be employed to build devices for quantum information processing, such as ultrafast quantum gates, non-classical light sources, and spin–photon interfaces. Beside quantum information systems, many classical information processing devices, such as lasers and modulators, benefit greatly from the enhanced light–matter interaction in such structures. This chapter gives an introduction to quantum dots, photonic crystal resonators, cavity QED, and quantum optics on this platform, as well as possible device applications.

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Ishibashi, Itsuki, e Hiroshi Maeda. "Optimization of Configuration of Directional Coupler in Hexagonal Resonator in Photonic Crystal". In Lecture Notes on Data Engineering and Communications Technologies, 443–52. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-72325-4_44.

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Singh, Neha, e Krishna Chandra Roy. "Simulation of Five-Channel De-multiplexer Using Double-Ring Resonator Photonic Crystal-Based ADF". In Proceedings of International Conference on Data Science and Applications, 165–75. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-7561-7_13.

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Singh, Neha, e Krishna Chandra Roy. "Designing of Photonic Crystal Ring Resonator Based ADF Filter for ITU-T G.694.2 CWDM Systems". In Communications in Computer and Information Science, 39–46. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-3433-6_5.

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We demonstrate a photonic crystal resonator on hybrid silicon nitride-on-lithium niobate (SiN-on-LN) platform, designed for microwave-assisted optical-frequency conversion applications. We measure a large intrinsic quality factor (Qint) of 1.47×105 with mode-splitting bandwidth of 14.6 GHz.

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Jin, Yan, Travis C. Briles, Jizhao Zang, David R. Carlson e Scott B. Papp. "Bandgap-detuned dark solitons in photonic-crystal resonators". In Nonlinear Optics. Washington, D.C.: Optica Publishing Group, 2023. http://dx.doi.org/10.1364/nlo.2023.w3a.3.

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We explore dark-soliton formation by bandgap-detuned excitation of photonic-crystal resonators. By designing resonator-mode bandgaps to compensate Kerr shifts of a dark soliton state, we achieve control over propagation direction and enhance the conversion efficiency.

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Ren, Hongliang, e Jinghong Zhang. "Photonic crystal one-way ring resonator". In Asia Communications and Photonics Conference. Washington, D.C.: OSA, 2013. http://dx.doi.org/10.1364/acp.2013.af2b.6.

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Lo, Stanley M., Shuren Hu, Sharon M. Weiss e Philippe M. Fauchet. "Photonic Crystal Microring Resonator based Sensors". In CLEO: Applications and Technology. Washington, D.C.: OSA, 2014. http://dx.doi.org/10.1364/cleo_at.2014.jtu4a.79.

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Altug, Hatice, e Jelena Vuckovic. "Two-dimensional coupled photonic crystal resonator arrays". In International Quantum Electronics Conference. Washington, D.C.: OSA, 2004. http://dx.doi.org/10.1364/iqec.2004.ithi2.

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Bahaddur, Indira, M. R. Tejaswini, Santhosh Kumar T.C., Preeta Sharan e P. C. Srikanth. "2D Photonic Crystal Cantilever Resonator Pressure Sensor". In 2019 Workshop on Recent Advances in Photonics (WRAP). IEEE, 2019. http://dx.doi.org/10.1109/wrap47485.2019.9013843.

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Iliew, Rumen, Falk Lederer, Christoph Etrich, Thomas Pertsch e Kestutis Staliunas. "Nonlinear All-Photonic Crystal Fabry-Pérot Resonator". In Nonlinear Photonics. Washington, D.C.: OSA, 2007. http://dx.doi.org/10.1364/np.2007.ntha3.

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Xiang, Wenfeng, Fu-Li Hsiao e Chengkuo Lee. "Microcantilever sensor using photonic crystal nanocavity resonator". In TRANSDUCERS 2009 - 2009 International Solid-State Sensors, Actuators and Microsystems Conference. IEEE, 2009. http://dx.doi.org/10.1109/sensor.2009.5285976.

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Robinson, S., e R. Nakkeeran. "Photonic Crystal Ring Resonator based Bandpass Filter". In 2010 IEEE International Conference on Communication Control and Computing Technologies (ICCCCT). IEEE, 2010. http://dx.doi.org/10.1109/icccct.2010.5670531.

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Rapporti di organizzazioni sul tema "Photonic crystal resonator"

Glushko, E. Ya, e A. N. Stepanyuk. The multimode island kind photonic crystal resonator: states classification. SME Burlaka, 2017. http://dx.doi.org/10.31812/0564/1561.

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Abstract (sommario):

In this work, we consider a new calculation method to solve the eigenvalue problem for electromagnetic field in finite 2D structures including the modes distribution through the system. The field amplitude distribution is valuable if the signal energy inside the system should be transformed in most effective way. The method proposed for finite resonators operates with open boundary conditions that are important to account the electromagnetic field non-periodicity in a finite system.

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