Relevant bibliographies by topics / Photonic devices / Dissertations / Theses
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Dissertations / Theses on the topic 'Photonic devices'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 July 2025

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1

Sánchez, Diana Luis David. "High performance photonic devices for switching applications in silicon photonics." Doctoral thesis, Universitat Politècnica de València, 2017. http://hdl.handle.net/10251/77150.

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El silicio es la plataforma más prometedora para la integración fotónica, asegurando la compatibilidad con los procesos de fabricación CMOS y la producción en masa de dispositivos a bajo coste. Durante las últimas décadas, la tecnología fotónica basada en la plataforma de silicio ha mostrado un gran crecimiento, desarrollando diferentes tipos de dispositivos ópticos de alto rendimiento. Una de las posibilidades para continuar mejorando las prestaciones de los dispositivos fotónicos es mediante la combinación con otras tecnologías como la plasmónica o con nuevos materiales con propiedades exce
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2

Zhou, Ying. "CHOLESTERIC LIQUID CRYSTAL PHOTONIC CRYSTAL LASERS AND PHOTONIC DEVICES." Doctoral diss., University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2706.

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This dissertation discusses cholesteric liquid crystals (CLCs) and polymers based photonic devices including one-dimensional (1D) photonic crystal lasers and broadband circular polarizers. CLCs showing unique self-organized chiral structures have been widely used in bistable displays, flexible displays, and reflectors. However, the photonic band gap they exhibit opens a new way for generating laser light at the photonic band edge (PBE) or inside the band gap. When doped with an emissive laser dye, cholesteric liquid crystals provide distributed feedback so that mirrorless lasing is hence possi
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Zhou, Yaling. "Photonic Devices Fabricated with Photonic Area Lithographically Mapped Process." University of Cincinnati / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1233528818.

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4

Forsberg, Erik. "Electronic and Photonic Quantum Devices." Doctoral thesis, KTH, Microelectronics and Information Technology, IMIT, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3476.

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<p>In this thesis various subjects at the crossroads of quantummechanics and device physics are treated, spanning from afundamental study on quantum measurements to fabricationtechniques of controlling gates for nanoelectroniccomponents.</p><p>Electron waveguide components, i.e. electronic componentswith a size such that the wave nature of the electron dominatesthe device characteristics, are treated both experimentally andtheoretically. On the experimental side, evidence of partialballistic transport at room-temperature has been found anddevices controlled by in-plane Pt/GaAs gates have beenf
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Alonzo, Massimo. "Photonic devices in solitonic waveguides." Phd thesis, Université de Metz, 2010. http://tel.archives-ouvertes.fr/tel-00557947.

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La thèse montre des solutions pour la réalisation de circuits photoniques intégrés utilisant le caractère volumétrique et les très faibles pertes en propagation des solitons spatiaux . On s'intéresse aux élément de base: interconnections, sources et router optique (comme dispositif d'élaboration). Interconnections et sources sont réalisé dans le niobat de lithium (LN) qui fournis des structures avec une très longe durée temporelle. Le fonctionnement d'un router optique est démontré dans le semiconducteur photorefractif (PR) InP:Fe en raison de sa sensitivité aux longueurs d'onde infrarouges (I
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6

Liu, Tao. "Photonic Crystal Based Optical Devices." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1294%5F1%5Fm.pdf&type=application/pdf.

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7

Fan, Yun-Hsing. "TUNABLE LIQUID CRYSTAL PHOTONIC DEVICES." Doctoral diss., University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3926.

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Liquid crystal (LC)-based adaptive optics are important for information processing, optical interconnections, photonics, integrated optics, and optical communications due to their tunable optical properties. In this dissertation, we describe novel liquid crystal photonic devices and their fabrication methods. The devices presented include inhomogeneous polymer-dispersed liquid crystal (PDLC), polymer network liquid crystals (PNLC) and phase-separated composite film (PSCOF). Liquid crystal/polymer composites could exist in different forms depending on the fabrication conditions. In Chap. 3, we
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8

Scardaci, Vittorio. "Carbon nanotubes for photonic devices." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612536.

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9

Gallacher, Kevin. "Germanium on silicon photonic devices." Thesis, University of Glasgow, 2013. http://theses.gla.ac.uk/4994/.

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There is presently increased interest in using germanium (Ge) for both electronic and optical devices on top of silicon (Si) substrates to expand the functionality of Si technology. It has been extremely difficult to form an Ohmic contact to n-Ge due to Fermi level pinning just above the Valence band. A low temperature nickel process has been developed that produces Ohmic contacts to n-Ge with a specific contact resistivity of , which to date is a record. The low contact resistivity is attributed to the low resistivity NiGe phase, which was identified using electron diffraction in a transmissi
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10

Raghunathan, Varun. "Raman-based silicon photonic devices." Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1481677321&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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11

Wang, Jing. "Fabrication and Characterization of Photonic Crystals, Optical Metamaterials and Plasmonic Devices." Doctoral thesis, KTH, Fotonik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-33600.

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Nanophotonics is an emerging research field that deals with interaction between light and matter in a sub-micron length scale. Nanophotonic devices have found an increasing number of applications in many areas including optical communication, microscopy, sensing, and solar energy harvesting especially during the past two decades. Among all nanophotonic devices, three main areas, namely photonic crystals, optical metamaterials and plasmonic devices, gain dominant interest in the photonic society owning to their potential impacts. This thesis studies the fabrication and characterization of three
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12

Boertjes, David Weldon. "Passive and electrooptic polymer photonic devices." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0002/NQ39506.pdf.

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13

Hua, Yan. "Development of photonic-based measurement devices." Thesis, University of Salford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308172.

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14

DEMENICIS, LUCIENE DA SILVA. "DEVELOPMENT AND CHARACTERIZATION OF PHOTONIC DEVICES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1996. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=8844@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>Polimeros orgânicos de natureza conjugada têm despertado bastante interessante como materiais ópticos não-lineares por serem extremamente promissores para o desenvolvimento de dispositivos fotônicos, como por exemplo dispositivos de comunicações. Além de possuírem resposta óptica não - linear intensa e rápida, seu modo de preparação e sua forma final apresentam grande flexibilidade. Do ponto de vista de aplicação, os parâmetros do material mais importantes são : a susceptibilidade não-linear de terceira ordem (x (3)) cuja
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15

Psaila, Nicholas David. "Photonic devices for integrated optical applications." Thesis, Heriot-Watt University, 2010. http://hdl.handle.net/10399/2325.

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work presented in this thesis encompasses an investigation into the use of ultrafast laser inscription in the fabrication of glass based photonic devices for integrated optical applications. Waveguide fabrication and characterisation experiments were carried out in three categories of glass substrate. Firstly, waveguides were inscribed in an erbium doped glass with the aim of fabricating optical amplifiers and lasers operating in the 1.5 μm spectral region. Low loss waveguides were fabricated in substrates with different dopant concentrations. Fibre to fibre net gain was achieved from one subs
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16

Klitis, Charalambos. "Polarisation selective integrated silicon photonic devices." Thesis, University of Glasgow, 2018. http://theses.gla.ac.uk/8725/.

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The main objective of this thesis was the development of polarisation selective gratings in silicon-on-insulator (SOI) technology. These devices can find numerous applications in the design of highly performing optical filters and, more in general, in all those devices that require on-chip manipulation of the polarisation state. The development of these devices was preceded by the optimisation of several fabrication processes, such as lithography and dry etching, and the re-design of a number of key components such as inverse polymer tapers and metallic heaters for thermal tuning. This activit
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17

Andreakou, Peristera. "Hybrid nanomaterials for novel photonic devices." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/347152/.

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This PhD thesis investigates the optical properties of colloidal semiconductor nanocrystals and evaluates concepts regarding the development of novel photonic devices. Spectroscopic studies of the exciton dynamics in colloidal lead sulfide (PbS) quantum dots (QDs) by tuning the temperature are presented. The lowest exciton splitting for a range of PbS QDs sizes is calculated and a transfer of the oscillator strength from dark to bright states as the size increases is demonstrated. Hybrid structures with PbS QDs deposited on silicon substrates were also studied in order to explore whether excit
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18

Li, Huanlu. "Integrated photonic devices for data communications." Thesis, University of Bristol, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.682683.

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With the increasing capacity requirements of telecommunication systems, the ability to increase capacity density is of great importance for optical transmission technologies. This thesis presents several integrated photonic devices (semiconductor laser diodes and silicon devices) aimed at boosting the capacity density of the optical transmission systems. The first part of the thesis is about four wave mixing (FWM) effects in semiconductor ring lasers. Mode beating via third order nonlinearity in semiconductor ring lasers has been analysed using a frequency-domain multi-mode rate equation model
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19

Liu, Hangyu. "Diamond processing for advanced photonic devices." Thesis, University of Strathclyde, 2016. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=28405.

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Diamond photonic devices are critical components for applications including diamond based optics, diamond Raman lasers and the building blocks of quantum information processing. In this thesis work, to achieve such novel diamond photonic devices, micro-fabrication techniques for diamond have been further developed. For making diamond optical structures such as diamond micro-lenses, the fabrication involves the definition of photoresist (PR) masks on the surface of diamond by using photolithography and the pattern transfer by using inductively coupled plasma (ICP) etching. A detailed study of t
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20

Zhang, Ziyang. "Silicon-based Photonic Devices : Design, Fabrication and Characterization." Doctoral thesis, Stockholm : Mikroelektronik och tillämpad fysik, Kungliga Tekniska högskolan, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4647.

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21

MAINI, LUCA. "Metamaterials based on photonic quasicrystals: from superlensing to new photonic devices." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2010. http://hdl.handle.net/10281/18116.

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In this Ph.D thesis we verified that metamaterials based on photonic quasicrystals can have superlensing properties and that the same type of material, in a different configuration, is able to localize photons and thus suggests the possibility to build new photonic devices, namely optomechanical switches. We saw that a slab cut from a two dimensional 12-fold quasicrystalline tiling constitutes a metamaterial because of its effective refactive index that becomes negative in some frequency ranges. These regions of the spectrum where negative refraction and superlensing occurr can be fou
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22

Wang, Ying. "Integrated photonic devices using self-assembled and optically defined photonic crystal superstructures." Connect to online resource, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3288723.

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23

Lawson, Llewellyn Rhys. "Hybrid silicon-organic ring resonator photonic devices /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/11542.

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24

Li, Qiang. "Silicon Based Photonic Devices and Their Applications." Doctoral thesis, KTH, Fotonik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-31290.

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The integration of modern electronic devices for information processing is rapidly ap-proaching an interconnect bottleneck. Silicon photonics can be a promising solution forcircumventing this bottleneck, as already being anticipated by many electronics manu-facturers including HP, IBM and Intel. In particular, optical interconnects can expeditedata transfer both between and within microchips. This thesis aims at two basic buildingblocks of silicon photonics: waveguides and resonators and addresses their applications inoptical signal processing and their potential integration with plasmonic dev
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25

Zhu, Weiming. "Photonic micromachined devices : design, fabrication and experiment." Phd thesis, Université Paris-Est, 2010. http://tel.archives-ouvertes.fr/tel-00596905.

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In this PhD project, three different approaches have been studied for tunable photonic devices based on MEMS technology. First, the optical double barrier structure has been numerically studied and experimentally demonstrated as the thermo-optical switch, switchable polarizer and optical tunneling junctions integrated as reconfigurable WDM system. Second, the slow light structure using metamaterial with coupled split ring unit cells is numerically analyzed. Finally, a tunable magnetic metamaterial is demonstrated using MEMS technology. The first major work is to use the optical tunneling effec
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26

Xu, Su. "Optical Fluid-based Photonic and Display Devices." Doctoral diss., University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5585.

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Conventional solid-state photonic devices exhibit an ultra-high optical performance and durability, but minimal adaptability. Recently, optical fluid-based photonic and display devices are emerging. By dynamically manipulating the optical interface formed by liquids, the optical output can be reconfigured or adaptively tuned in real time. Such devices exhibit some unique characteristics that are not achievable in conventional solid-state photonic devices. Therefore, they open a gateway for new applications, such as image and signal processing, optical communication, sensing, and lab-on-a-chip,
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27

Gnan, Marco. "Photonic wire devices in silicon-on-insulator." Thesis, University of Glasgow, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.443405.

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28

Namiq, Medya Fouad Namiq. "Photonic microfibre devices based on carbon nanotubes." Thesis, University of Southampton, 2016. https://eprints.soton.ac.uk/419479/.

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Photonic fibre devices based on the interaction of evanescent fields with materials possessing high Kerr nonlinearity such as carbon nanotubes are promising as an efficient, low loss and low cost devices to be employed in all-optical system applications. Specifically, this report encompasses the work toward addressing the basic key parameters to design and fabricate sufficient all-optical fibre devices based on coated CNTs. Thus, the fundamental concepts of optical fibres; fibre Bragg gratings (FBG), Optical nonlinear (ONL) properties and their effects, CNTs characteristics have been explored.
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Mittal, Vinita. "Mid-infrared integrated photonic devices for biosensing." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/416430/.

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This thesis describes the realisation of devices and techniques based on evanescent field sensing using planar optical waveguides for mid-infrared (MIR) absorption spectroscopy, to provide bio-chemical sensing capabilities for medical diagnostics. The fundamental vibrations of bio-chemical molecules occur in the MIR region, where their absorption is orders of magnitude stronger than their overtone bands in the near-infrared making it suitable for highly sensitive and specific absorption spectroscopy. Realisation of waveguides is an essential step towards mass-producible and low-cost integrated
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Dorjgotov, Enkh-Amgalan. "Tunable Liquid Crystal Etalon and Photonic Devices." Kent State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=kent1278035084.

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31

Sevison, Gary Alan. "Silicon Compatible Short-Wave Infrared Photonic Devices." University of Dayton / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1523553057993197.

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32

Fry, Daniel J. "Multimode quantum interference in integrated photonic devices." Thesis, University of Bristol, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.685350.

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This thesis contains experimental and theoretical work based on pair-photon interference in integrated photonic devices. Multimode interference (MMI) devices fabricated with silicon oxynitride technology are used to experimentally demonstrate high visibility pair-photon Hong-Ou-Mandel (HOM) interference. A theoretical model of pair-photon interference is derived for the self-imaging multimode interference that occurs between guided modes in the MMI device , and the scalability of MMI devices for use in quantum photonic networks is considered by modelling serially concatenated devices for decoh
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33

Rahachou, Aliaksandr. "Theoretical studies of light propagation in photonic and plasmonic devices." Doctoral thesis, Norrköping : Department of Science and Technology, Linköpings universitet, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-9585.

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34

Cross, Jeffrey Brian. "Alignment tolerant smart photonic optical interconnects." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/15756.

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35

Askari, Murtaza. "High efficiency devices based on slow light in photonic crystals." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/39558.

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Photonic crystals have allowed unprecedented control of light and have allowed bringing new functionalities on chip. Photonic crystal waveguides (PCWs), which are linear defects in a photonic crystal, have unique features that distinguish these waveguides from other waveguides. The unique features include very large dispersion, existence of slow light, and the possibility of tailoring the dispersion properties for guiding light. In my research, I have overcome some of the challenges in using slow light in PCWs. In this work, I have demonstrated (i) high efficiency coupling of light into slow g
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36

Kutluer, Kutlu. "Quantum memory protocols for photonic solid-state devices." Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/461494.

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A photonic quantum memory (QM) is a device that has the capability of storing a quantum state of light and retrieving back after a controlled time. It is an important element in quantum information science and is, among other applications, a crucial device for quantum repeater architectures which have been proposed to overcome the loss and the decoherence issues in long distance transmission of photons. Rare earth ion doped solid state systems are promising candidates for QMs which combine the advantages of solid state systems, such as scalability and reduced experimental complexity, with the
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Atabaki, Amir Hossein. "Reconfigurable silicon photonic devices for optical signal processing." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41207.

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Processing of high-speed data using optical signals is a promising approach for tackling the bandwidth and speed challenges of today's electronics. Realization of complex optical signal processing functionalities seems more possible than any time before, thanks to the recent achievements in silicon photonics towards large-scale photonic integration. In this Ph.D. work, a novel thermal reconfiguration technology is proposed and experimentally demonstrated for silicon photonics that is compact, low-loss, low-power, fast, with a large tuning-range. These properties are all required for large-scal
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Wilkinson, Scott Tolbert. "Photonic devices for optical interconnects using epitaxial liftoff." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/15059.

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Calhoun, Kenneth Harold. "Thin film compound semiconductor devices for photonic interconnects." Diss., Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/15478.

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Ge, Zhibing. "MODELING OF LIQUID CRYSTAL DISPLAY AND PHOTONIC DEVICES." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3867.

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Liquid crystal (LC) materials have been widely applied in electro-optical devices, among which display is the most successful playground and numerous new applications in photonic areas (such as laser beam steering devices) are also emerging. To well guide the device design for optimum performance, accurate modeling is of prior and practical importance. Generally, the modeling of LC devices includes two parts in sequence: accurate LC molecule deformation extraction under external electric fields and optical calculation thereafter for the corresponding electro-optical behaviors. In this disserta
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Camargo, Edilson Alexandre. "Switchable devices based on photonic crystal channel waveguides." Thesis, University of Glasgow, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.412954.

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42

Bushell, Zoe L. "Development of novel infrared photonic materials and devices." Thesis, University of Surrey, 2017. http://epubs.surrey.ac.uk/841718/.

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This thesis investigates a range of novel photonic devices and their constituent semiconductor materials with emission in the infrared (IR) region of the spectrum. These have a variety of potential applications, including in telecoms, sensing and defence systems. Studies focus on aspects of the electronic and photonic band structures, and how these impact upon device performance. Type-II interband cascade lasers and LEDs emitting in the mid-IR region of 3 – 4 μm are characterised using temperature and hydrostatic pressure dependent techniques. The key finding is that the threshold current dens
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Tandon, Sheila (Sheila N. ). 1978. "Engineering light using large area photonic crystal devices." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/33931.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2005.<br>Includes bibliographical references.<br>Photonic crystals are fabricated structures composed of a periodic arrangement of materials with differing indices of refraction. This research has focused on the realization of two distinct photonic crystal structures in which large area has played a key role: 1) large area broadband saturable Bragg reflectors, and 2) large area 2D photonic crystal devices. Saturable Bragg reflectors (SBRs) can be used to self-start ultra-short pulse ge
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Bradley, Michael Scott. "Highly absorptive thin films for integrated photonic devices." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/36394.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2006.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Includes bibliographical references (p. 52-53).<br>Highly absorptive thin films serve as the active layer of a new class of photonic devices based on the strong coupling of light and matter. In order to develop these devices into a new field of integrated photonics, methods for analysis, patterning, and deposition of the active
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Chen, Jerry C. (Jerry Chia-yung). "Electromagnetic field computation and photonic band gap devices." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/11293.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.<br>Includes bibliographical references (p. 147-166).<br>by Jerry Chia-yung Chen.<br>Ph.D.
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46

Selim, Ramsey. "Numerical modelling of photonic crystal based switching devices." Thesis, University of South Wales, 2010. https://pure.southwales.ac.uk/en/studentthesis/numerical-modelling-of-photonic-crystal-based-switching-devices(568c3416-9479-4c7e-aeb0-80c7d31a7e83).html.

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In the last few years research has identified Photonic Crystals (PhCs) as promising material that exhibits strong capability of controlling light propagation in a manner not previously possible with conventional optical devices. PhCs, otherwise known as Photonic Bandgap (PBG) material, have one or more frequency bands in which no electromagnetic wave is allowed to propagate inside the PhC. Creating defects into such a periodic structure makes it possible to manipulate the flow of selected light waves within the PhC devices outperforming conventional optical devices. As the fabrication of PhC d
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47

Peacock, Anna Claire. "Applications of light propagation in novel photonic devices." Thesis, University of Southampton, 2004. https://eprints.soton.ac.uk/42429/.

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In this thesis, the propagation of light in novel photonic devices has been studied theoretically, numerically and experimentally. In particular, self-similar solutions to the nonlinear Schrödinger equation have been investigated as a means of avoiding distortions associated with high power pulse propagation in optical fibres. The results show that it is the interplay between the nonlinear and dispersive effects that leads to stable formation of the self-similar solutions. By considering generalised nonlinear Schrödinger equations we have extended the previous investigations of linearly chirpe
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48

Ning, Ding. "Analytical and Numerical Models of Multilayered Photonic Devices." University of Akron / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1207712683.

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49

Drummond, Miguel Vidal. "Photonic devices for optical and RF signal processing." Doctoral thesis, Universidade de Aveiro, 2011. http://hdl.handle.net/10773/7562.

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Doutoramento em Engenharia Electrotécnica<br>O presente trabalho tem por objectivo o estudo de novos dispositivos fotónicos aplicados a sistemas de comunicações por fibra óptica e a sistemas de processamento de sinais RF. Os dispositivos apresentados baseiam-se em processamento de sinal linear e não linear. Dispositivos lineares ópticos tais como o interferómetro de Mach-Zehnder permitem adicionar sinais ópticos com pesos fixos ou sintonizáveis. Desta forma, este dispositivo pode ser usado respectivamente como um filtro óptico em amplitude com duas saídas complementares, ou, como um fil
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Roney, Thomas. "Applications of plasmonics in silicon based photonic devices." Thesis, University of Leeds, 2012. http://etheses.whiterose.ac.uk/3397/.

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Surface plasmon polaritons are highly confined electromagnetic waves which can be employed in developing miniaturised optical devices for bridging the size-mismatch between the nanoscale electronics and large diffraction-limited photonic devices. For this purpose, it is desired to develop silicon compatible plasmonic devices in order to achieve seamless integration with electronics on the silicon-on-insulator platform. Plasmonic devices such as modulators, detectors, couplers, (de)multiplexers, etc, would possess the advantages of having a small device footprint, low cost, low power consumptio
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