Дисертації з теми "Waveguide gratings"
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Huang, Xuefeng. "Ion implanted optical waveguides and laser ablated Bragg waveguide gratings." Thesis, University of Sussex, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364140.
Повний текст джерелаWang, Xu. "Silicon photonic waveguide Bragg gratings." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/45687.
Повний текст джерелаLi, Lifeng. "Application of diffraction grating theory to analysis and fabrication of waveguide gratings." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184388.
Повний текст джерелаLiu, Qing. "Design and fabrication of long-period waveguide gratings /." access full-text access abstract and table of contents, 2005. http://libweb.cityu.edu.hk/cgi-bin/ezdb/thesis.pl?phd-ee-b19887887a.pdf.
Повний текст джерела"Submitted to Department of Electronic Engineering in partial fulfillment of the requirements for the degree of Doctor of Philosophy" Includes bibliographical references.
Koussi, Erieta-Katerina. "Micro patterning of complex Waveguide Resonant Gratings (WRG)." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSES027.
Повний текст джерелаThis PhD thesis entitled “Micro patterning of complex Waveguide Resonant Gratings (WRG)” studies the optical sensing devices, which involve various photolithography techniques and nanotechnology tools with clean room processes for their fabrication. These devices, in their classic form, consist of a diffraction grating formed by microscopic lines engraved periodically on a photosensitive surface, which is deposited on a dielectric layer, the waveguide. Both layers are supported on a substrate. To enable sensing functions, the diffraction grating must be extremely selective, i.e. it must have the ability to reject all the received spectral components, while selecting only one wavelength to couple it into the waveguide. After the out coupling, a reflection with a very large amplitude and great finesse occurs. Different types of components depending on the intended application can be produced on different types of substrates, materials or geometries (plane, cylindrical).One of the projects of this thesis engineers WRG on the interior walls of a tube to couple TE and TM modes into the waveguide. The fabrication is achieved by a specially designed radial phase mask, whereas the optical function is highlighted by the use of a conical mirror, able to reflect light isotropically for mode excitation. In addition, innovative materials can be used for their integration into flat WRG. One of the materials under study is the Vanadium Dioxide (VO2), which undergoes first-order phase transitions (Insulator to Metal) at low and high temperatures respectively. The fabrication of such a delicate compound is completed by two different synthesis methods, the Pulsed Laser Deposition and Magnetron Sputtering. The ability to induce resonance by thermally triggering the device is intended for laser safety applications to avoid damage during overheating
MORIWAKI, Osamu, Ken-ichi SATO, Hiroshi HASEGAWA, and Shoji KAKEHASHI. "Formulation of Waveguide Connection for Waveband MUX/DEMUX Using Concatenated Arrayed-Waveguide Gratings." Institute of Electronics, Information and Communication Engineers, 2007. http://hdl.handle.net/2237/14992.
Повний текст джерелаGargallo, Jaquotot Bernardo Andrés. "Advanced arrayed waveguide gratings: models, design strategies and experimental demonstration." Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/74646.
Повний текст джерела[ES] La presente tesis se ha centrado en el modelado, diseño y demostración experimental del dispositivo Arrayed Waveguide Grating (AWG) con funcionalidades avanzadas. Primero, usando la formulación existente sobre AWGs se aportan ecuaciones y librerías de diseño, y se validan experimentalmente por medio de dispositivos fabricados en tecnologías de Indium Phosphide (InP) y Silicon-on-insulator (SOI). Después, se reporta un modelo y demostración experimental para un Interleave-Chirped Arrayed Waveguide Grating (IC-AWG), el cual es capaz de procesar señales ópticas como demultiplexor WDM, divisor de polarización y componente de diversidad de fase en un único dispositivo. Este dispositivo fue fabricado y probado en tecnología de InP. El segundo AWG innovador demostrado en esta tesis es de tipo Reflectante (R-AWG), cuyo diseño permite modificar la forma espectral del canal y cambiar su resolución espectral, incluyendo una demostración de diseño y fabricación de este dispositivo en tecnología de SOI. El último AWG que incluye conceptos innovadores es uno sintonizable por Acoustic Waves (AWGSAW), donde los canales espectrales pueden ser sintonizados por medio del efecto acusto-óptico. Dicho dispositivo fue fabricado en tecnología de Aluminium Gallium Arsenide (AlGaAs), y se han incluido medidas experimentales para validar el concepto y el flujo de diseño. En paralelo junto con esta tesis se han desarrollado diferentes diseños para el AWG en un amplio número de tecnologías (genéricas) y plataformas de fabricación, implementadas en unas librerías de diseño para uno de los softwares m¿as utilizados para el diseño de circuitos integrados ópticos, siendo actualmente el estándar de facto. Dichas librerías de diseño han sido licenciadas a la compañía VLC Photonics S.L., spin-off de la UPV.
[CAT] La present tesi ha estat centrada en el modelatge, disseny i demostració experimental del dispositiu Arrayed Waveguide Grating (AWG) amb funcionalitats avançades. Primer, usant la formulació existent sobre AWGs s'aporten equacions i llibreries de disseny, i es validen experimentalment per mitjà de dispositius fabricats en tecnologies de Indium Phosphide (InP) i Silicon-on-insulator (SOI). Després, es reporta un model i demostració experimental per a un Interleave-Chirped Arrayed Waveguide Grating (IC-AWG), el qual és capaç de processar senyals òptiques com demultiplexor WDM, divisor de polarització i component de diversitat de fase en un únic dispositiu. Aquest dispositiu va ser fabricat i provat en tecnologia de InP. El segon AWG innovador demostrat en aquesta tesi és de tipus Reflector (R-AWG), amb un disseny que permet modificar la forma espectral del canal i canviar la seua resolució espectral, incloent una demostració de disseny i fabricació d'aquest dispositiu en tecnologia de SOI. L'últim AWG que inclou conceptes innovadors és un sintonitzable per Acoustic Waves (AWG-SAW), on els canals espectrals poden ser sintonitzats per mitjà de l'efecte acusto-òptic. Aquest dispositiu va ser fabricat en tecnologia de Aluminium Gallium Arsenide (AlGaAs), i s'han inclòs mesures experimentals per validar el concepte i el flux de disseny. En paral.lel juntament amb aquesta tesi s'han desenvolupat diferents dissenys per al AWG en un ampli nombre de tecnologies (genèriques) i plataformes de fabricació, implementades en unes llibreries de disseny per a un dels programaris més utilitzats per al disseny de circuits integrats òptics, sent actualment l'estàndard de facto. Aquestes llibreries de disseny han estat llicenciades a la companyia VLC Photonics S.L., spin-off de la UPV.
Gargallo Jaquotot, BA. (2016). Advanced arrayed waveguide gratings: models, design strategies and experimental demonstration [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/74646
TESIS
Li, Weizhuo. "Wavelength Multiplexing of MEMS Pressure and Temperature Sensors Using Fiber Bragg Gratings and Arrayed Waveguide Gratings." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1123972586.
Повний текст джерелаTsalamanis, Ioannis. "Applications of arrayed waveguide gratings in future hybrid access network topologies." Thesis, University of Essex, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.435595.
Повний текст джерелаRogers, Helen L. "Direct UV-written Bragg gratings for waveguide characterisation and advanced applications." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/352169/.
Повний текст джерелаRausch, Kameron Wade. "Broadband Arrayed Waveguide Grating Multiplexers on InP." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1319%5F1%5Fm.pdf&type=application/pdf.
Повний текст джерелаAkram, Nadeem. "Photonic devices with MQW active material and waveguide gratings : modelling and characterisation." Doctoral thesis, KTH, Mikroelektronik och Informationsteknik, IMIT, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-433.
Повний текст джерелаQC 20100827
Akram, Muhammad Nadeem. "Photonic devices with MQW active material and waveguide gratings : modelling and characterisation /." Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-433.
Повний текст джерелаHarper, Kevin Randolph. "Theory, Design, and Fabrication of Diffractive Grating Coupler for Slab Waveguide." Diss., CLICK HERE for online access, 2003. http://contentdm.lib.byu.edu/ETD/image/etd281.pdf.
Повний текст джерелаLanker, Michael. "Arrayed waveguide gratings in indium phosphide using buried waveguides and optical space switches with high on-off ratio in silica /." Zürich, 2000. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13602.
Повний текст джерелаJones, Mark Lehi. "Design of normal-incidence waveguide-imbedded phase gratings for optical interconnects in multi-chip modules." Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/15676.
Повний текст джерелаLu, Peng. "Adaptive Control of Waveguide Modes in Two-Mode Fibers." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/65006.
Повний текст джерелаPh. D.
Tashtush, Aktham Atallah Mofleh. "Characterization of integrated Bragg gratings in silicon-on-insulator." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/7670/.
Повний текст джерелаTakahashi, Hiroshi, Toshio Watanabe, Ken-ichi Sato, Hiroshi Hasegawa, and Tomonobu Niwa. "Large Port Count Wavelength Routing Optical Switch Consisting of Cascaded Small-Size Cyclic Arrayed Waveguide Gratings." IEEE, 2012. http://hdl.handle.net/2237/21041.
Повний текст джерелаWosinski, Lech. "Technology for photonic components in silica/silicon material structure." Doctoral thesis, KTH, Microelectronics and Information Technology, IMIT, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3556.
Повний текст джерелаThe main objectives of this thesis were to develop a lowtemperature PECVD process suitable for optoelectronicintegration, and to optimize silica glass composition forUV-induced modifications of a refractive index in PECVDfabricated planar devices. The most important achievement isthe successful development of a low temperature silicadeposition, which for the first time makes it is possible tofabricate good quality low loss integrated components whilekeeping the temperature below 250oC during the entirefabrication process. Two strong absorption peaks thatappear at1.5 mm communication window due to N-H and Si-H bonds have beencompletely eliminated by process optimization. This openspossibilities for monolithic integration with other,temperature sensitive devices, such as semiconductor lasers anddetectors, or polymer-based structures on the common siliconplatform. PECVD technology for low loss amorphous silicon inapplication to SiO2/Si based photonic crystal structures hasbeen also optimized to remove hydrogen incorporated during thedeposition process, responsible for the porosity of thedeposited material and creation of similar to silica absorptionbands.
Change of the refractive index of germanium doped silicaunder UV irradiation is commonly used for fabrication of UVinduced fiber Bragg gratings. Here we describe our achievementsin fabrication of fiber Bragg gratings and their application todistributed sensor systems. Recently we have built up a laserlab for UV treatment in application to planar technology. Wehave demonstrated the high photosensitivity of PECVD depositedGe-doped glasses (not thermally annealed) even without hydrogenloading, leading to a record transmission suppression of 47dBin a Bragg grating photoinduced in a straight buried channelwaveguide. We have also used a UV induced refractive indexchange to introduce other device modifications or functions,such as phase shift, wavelength trimming and control ofpolarization birefringence.The developed low temperature technology and the UVprocessing form a unique technology platform for development ofnovel integrated functional devices for optical communicationsystems.
A substantial part of the thesis has been devoted tostudying different plasma deposition parameters and theirinfluence on the optical characteristics of fabricatedwaveguides to find the processing window giving the besttrade-off between the deposition rate,chamber temperatureduring the process, optical losses and presence of absorptionbands within the interesting wavelength range. The optimalconditions identified in this study are low pressure (300-400mTorr), high dilution of silane in nitrous oxide and high totalflow (2000 sccm), low frequency (380 KHz) RF source and high RFpower levels (800-1000 W).
The thesis provides better understanding of the plasmareactions during the deposition process. RF Power is the keyparameter for increasing the rate of surface processes so as toaccommodate each atomic layer in the lowest energy statepossible. All the process conditions which favor a moreenergetic ion bombardment (i.e. low pressure, low frequency andhigh power) improve the quality of the material, making it moredense and similar to thermal oxide, but after a certain pointthe positive trend with increasing power saturates. As theenergy of the incoming ion increases, a competing effect setsin at the surface: ion induced damage and resputtering.
Finally, the developed technologies were applied for thefabrication of some test and new concept devices for opticalcommunication systems including multimode interference (MMI)-based couplers/splitters, state-of-the-art arrayed waveguidegrating-based multi/ demultiplexers, the first Bragg gratingassisted MMI-based add-drop multiplexer, as well as moreresearch oriented devices such as a Mach-Zehnder switch basedon silica poling and a Photonic Crystal-based coupler.
Keywords:silica-on-silicon technology, PECVD, plasmadeposition, photonic integrated circuits, planar waveguidedevices, UV Bragg gratings, photosensitivity, arrayed waveguidegratings, multimode interference couplers, add-dropmultiplexers.
Santos, Cláudia Barros dos. "Laser a fibra dopada com Érbio com múltiplos comprimentos de onda e múltiplos regimes de operação simultâneos." Universidade Presbiteriana Mackenzie, 2011. http://tede.mackenzie.br/jspui/handle/tede/1399.
Повний текст джерелаIn this work, we inserted two Arrayed Waveguide Gratings (AWGs), in an Erbium doped fiber ring cavity laser, where a single gain medium at room temperature can emit laser in multiples wavelengths, simultaneous and individualy controlled. The setup allowed us to check different functions in the ring cavity. Here we show emission in CW regime, Passive Mode-Locking, using Carbon Nanotubes as saturable absorbers and finally Active mode-locking at 7GHz, simultaneously.
Neste trabalho, fez-se a inserção de duas grades de difração matriciais com guias de onda, ou AWGs (Arrayed Waveguide Gratings) em uma cavidade laser de fibra dopada com Érbio, onde um único meio de ganho em temperatura ambiente pode gerar ação laser em múltiplos comprimentos de onda, com emissões simultâneas e controladas individualmente. A configuração utilizada permitiu o teste com diferentes regimes de operação simultâneos dentro da cavidade. Mostramos a possibilidade de emissão laser em regime CW, em regime de mode-locking passivo, com o uso de nanotubos de carbono como absorvedor saturável e, por último, em regime de modelocking ativo com uma freqüência de modulação de 7 GHz.
Demori, Cláudia Barros dos Santos. "Laser de fibra dopada com érbio multifuncional." Universidade Presbiteriana Mackenzie, 2015. http://tede.mackenzie.br/jspui/handle/tede/1532.
Повний текст джерелаThis work shows an Erbium doped-fiber Laser with many frequencies and many operation regimes based on integration of two paired arrayed waveguide gratings (AWGs) into a ring cavity. The AWGs are highlighted, since 2000, as key technology for multifrequencies lasers for optical communications, spectroscopy, image, astronomy and others applications. Fundamentally, gratings work splitting waveguide signal and since insertion in the cavity they allow simultaneous operating of tens of wavelength. We explore each one of these wavelength withing Erbium gain region, doing channels in different regimes of operation. These regimes may be continuous or pulsed. The advantage is that each channel may be modulated independently. Simultaneous operation with high repetition rates at 10 and 40 GHz were demonstrated, as continuous wave. The laser is stable, versatile and multifunctional. It is possible that more operating regimes, as passive mode-locking, be explored. We showed by this work efficient way to passive mode-locking by carbon nanotubes as saturable absorbers. Soon, the passive mode-locking is a potential regime for the demonstrated laser. As the new bi-dimensional materials, that look efficient for passive mode-locking and in the future, hybrid mode-locking, as graphene and black phosphor.
Esta tese trata de demonstrar um Laser de fibra dopada com Érbio com múltiplas frequências e múltiplos regimes de operação simultâneos baseados na integração de duas grades de difração pareadas (Arrayed Waveguide Gratings, AWGs) dentro de uma cavidade de laser de fibra. As AWGs são apontadas, desde o ano 2000, como tecnologia fundamental em lasers de múltiplas frequencias para as comunicações ópticas, para espectroscopia, imageamento, astronomia, e outras aplicações. Fundamentalmente, as grades funcionam como divisores do sinal óptico e quando inseridas dentro da cavidade de um laser de fibra permitem a operação simultânea de dezenas de comprimentos de onda. Neste trabalho, exploramos cada comprimento de onda, dentro da região de ganho do Érbio, com um regime de operação diferente. Esse regime pode ser pulsado ou contínuo. A vantagem do laser apresentado é que cada comprimento de onda é um canal que pode ser modulado de forma independente. Pôde-se demonstrar operação simultânea com regimes a altas taxas de repetição como 10 GHz e 40 GHz, assim como CW. O laser é estável, versátil e multifuncional. É possível que mais regimes de operação, como o regime de acoplamento de modos passivo sejam explorados. Mostramos ao longo deste trabalho maneiras eficientes de acoplar modos passivamente, utilizando nanotubos de carbono como absorvedores saturáveis, logo a técnica de acoplamento de modos passivo é um dos regimes em potencial para este laser. Assim como, o uso de novos materiais bidimensionais, que se mostram eficientes para o acoplamento de modos passivo e futuramente híbrido, como o grafeno e o fósforo negro.
Jovanovic, N., N. Cvetojevic, C. Schwab, B. Norris, J. Lozi, S. Gross, C. Betters, et al. "Efficiently feeding single-mode fiber photonic spectrographs with an extreme adaptive optics system: on-sky characterization and preliminary spectroscopy." SPIE-INT SOC OPTICAL ENGINEERING, 2016. http://hdl.handle.net/10150/622807.
Повний текст джерелаFevrier, Mickaël. "Couplage entre un guide d’onde diélectrique et un guide à plasmon de surface localisé : conception, fabrication et caractérisation." Thesis, Paris 11, 2012. http://www.theses.fr/2012PA112040/document.
Повний текст джерелаThis PhD work presents a theoretical, numerical and experimental study of the integration of a gold nanoparticle chain supporting "localized surface plasmon resonances" on a dielectric waveguide. The localized surface plasmon allows a sub-wavelength confinement of light which could lead to the achievement of ultra-compact optical components. However, the high level of optical losses restricts their application to short propagating distances unlike dielectric waveguides. A judicious combination of both types of guides should therefore allow taking profit of their respective advantages. Firstly, we have theoretically studied the properties of nanoparticles chains using an analytical model that we have developed following the coupled dipoles approximation. This has helped us to determine the shape and size of nanoparticles, which have been further used in a FDTD software, to simulate the coupling between the chain and the dielectric waveguide (SOI or Si3N4). Using this numerical study, we have deduced the geometries of structures to be fabricated. The realized structures have been characterized using a spectrally resolved transmission set-up, built during this thesis, and an optical near field measurement set-up (collaboration LNIO Troyes). For the first time, we have experimentally shown the properties of short nanoparticle chains integrated on a SOI waveguide as well as the existence of a coupled waveguide phenomenon between long nanoparticle chains and SOI waveguides. A record value has been obtained for the coupling constant at telecom wavelengths (near infrared). The light energy carried by the TE mode of the SOI waveguide can be completely transferred into the plasmonic waveguide via the first 4 or 5 nanoparticles of the chain, which means a distance of less than 600 nm. We have also studied the properties of Bragg gratings based on localized surface plasmon. Experimental results from spectrally resolved transmission measurements have been compared to theoretical results obtained from an analytical model based on the point dipole approximation in quasi-static regime, on one hand, and using the coupled mode theory, on the other hand. This work opens the way for applications to optical tweezers, sensors or spasers, which will benefit from the integration of metal nanoparticles in photonic circuits
Greenwell, Andrew. "RIGOROUS ANALYSIS OF WAVE GUIDING AND DIFFRACTIVE INTEGRATED OPTICAL STRUCTURES." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4346.
Повний текст джерелаPh.D.
Optics and Photonics
Optics and Photonics
Optics PhD
Zeh, Christoph. "Polarization mode excitation in index-tailored optical fibers by acoustic long period gratings." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-127869.
Повний текст джерелаDiese Arbeit behandelt die Entwicklung und Anwendung eines akustischen langperiodischen Fasergitters (LPG) in Verbindung mit einer optischen Spezialfaser (SF). Das akustische LPG wandelt ausgewählte optische Modi der SF um. Einige dieser Modi weisen eine komplexe, zylindersymmetrische Polarisations- und Intensitätsverteilung auf. Diese sind eine Form der so genannten zylindrischen Vektor-Strahlen (CVBs), welche in zahlreichen Gebieten der wissenschaftlichen und angewandten Optik zum Einsatz kommen. In dieser Arbeit wird eine Anwendung auf die hochauflösende Lichtmikroskopie demonstriert. Die fokale Feldverteilung wird dabei durch die Auswahl der vom LPG erzeugten Modi, welche zur Beleuchtung genutzt werden, eingestellt. Als Nachweis wird die entstehende laterale Feldverteilung mithilfe eines Goldpartikels (Durchmesser 30 Nanometer) vermessen. Aufbau und Test des akustischen LPGs werden im Detail besprochen. Eine wichtige Komponente ist ein piezoelektrischer Wandler, der akustische Biegewellen in der SF anregt. Diese sind die Ursache der Umwandlung optischer Modi. Die maximale Konversionseffizienz betrug 85% bei 785 nm (optischer) Wellenlänge. Die Effizienz ist derzeit hauptsächlich durch die Lage der akustischen Resonanzfrequenzen des Wandlers und deren Bandbreite begrenzt. Die benutzte SF spaltet die Ausbreitungskonstanten von Polarisationsmodi zweiter Ordnung auf, sodass diese individuell angeregt werden können und weniger anfällig gegen über Störungen der Faser sind, als das bei gewöhnlichen, schwach führenden Glasfasern der Fall ist. Das zu Grunde liegende Brechzahlprofil des Faserkerns wurde von Ramachandran et al. entwickelt. Für diese Arbeit wurde jedoch die Ausdehnung des Profils verkleinert – ein erster Schritt um Anwendungen bei kürzeren optischen Wellenlängen zu ermöglichen. Es werden numerische Simulationen mit der Methode der multiplen Multipole zur Berechnung der Modenfelder und den zugehörigen Propagationskonstanten vorgestellt. Diese zeigen u. a. den starken Einfluss von geometrischen Veränderungen des Faserkerns. Basierend auf den Simulationsergebnissen wird ein einfaches Kopplungsschema für die Modi entwickelt, welches ein qualitatives Verständnis der experimentellen Ergebnisse ermöglicht. In Kombination bilden die SF und das LPG ein vielseitiges Gerät zur Erzeugung von CVBs und anderen Strahlen mit komplexer Phasenstruktur. Die Methode besticht durch hohe Qualität des Strahlprofils, stabile Abstrahlrichtung, einfachen Aufbau, elektronische Steuerbarkeit und geringe Materialkosten. Zukünftige Weiterentwicklungen des akustischen LPGs zielen auf die Anwendung in faseroptischen Sensoren und in der optischen Nahfeldmikroskopie ab
Kakehashi, Shoji, Hiroshi Hasegawa, Ken-ichi Sato, Osamu Moriwaki, and Shin Kamei. "Analysis and Development of Fixed and Variable Waveband MUX/DEMUX Utilizing AWG Routing Functions." IEEE, 2009. http://hdl.handle.net/2237/14029.
Повний текст джерелаLombardo, David. "Design and Fabrication of Suspended Waveguides With Photonic Grating Structures." University of Dayton / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1591796311145344.
Повний текст джерелаWiesmann, Dorothea. "Bragg gratings in planar SiON waveguides /." [S.l.] : [s.n.], 2001. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13855.
Повний текст джерелаRabady, Rabi Ibrahim. "Waveguide grating mirror for laser resonators." Connect to online resource - WSU on-site and authorized users, 2003.
Знайти повний текст джерелаNg, Sandy. "Ultrafast laser written bulk waveguides and gratings." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0016/MQ53441.pdf.
Повний текст джерелаEhrlich, Jeffrey Ellis. "Nonlinear grating structures in indium antimonide waveguides." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184914.
Повний текст джерелаLin, John Chin-Hsiang. "Integrated optical sensors using waveguide grating reflectors." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239280.
Повний текст джерелаChan, Gordon Siu Fan. "Vertical grating assisted coupling between waveguide layers." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282414.
Повний текст джерелаCalonico-Soto, Alicia. "Influence of optical crosstalk on WDM all-optical network design." Thesis, University of Essex, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327077.
Повний текст джерелаFernández, Vicente Juan. "Reconfigurable Reflective Arrayed Waveguide Grating on Silicon Nitride." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/165783.
Повний текст джерела[CAT] La present tesi s'ha centrat en el modelatge, disseny i demonstració experimental per primera vegada del dispositiu Reconfigurable Reflective Arrayed Waveguide Grating (R-RAWG). Per a la consecució d'aquest dispositiu que té possibilitats d'ús en l'espectrometria, una plataforma de nitrur de silici anomenada CNM-VLC s'ha usat ja que aquest material permet operar en una gran amplada de banda. Aquesta plataforma posseeix certes limitacions i els elements necessaris per al funcionament d'aquest dispositiu tenien un performance baix. Per això, s'ha desenvolupat i validat una metodologia que ha permés obtindre millors divisors i també, gràcies als processos de fabricació, s'ha dissenyat un acoplador que ha millorat considerablement l'acoble de llum al xip. Això ha sigut gràcies a un exhaustiu analisis d'opcions existents en la literatura que també ha permés triar la millor opció per a realitzar un espill reconfigurable en la plataforma sense canviar ni afegir cap procés de fabricació. S'han demonstrat espills reconfigurables gràcies a utilitzar divisors realimentats i també s'ha desenvolupat codis que prediuen el comportament del dispostiu experimentalment. Amb tot el treball realitzat, s'ha dissenyat un R-RAWG fent ús de determinades consideracions perquè poguera operar en una gran amplada de banda i que els actuadors de fase no tingueren perill de desbaratar-se. També s'ha desenvolupat un codi per al modelatge del R-RAWG que permet imitar la fabricació d'aquests dispositius i que, gràcies a això, s'ha desenvolupat un mètode o algorisme anomenat DPASTOR, que usa algorismes usats en machine learning, per a optimitzar la resposta amb tan sols la potència òptica d'eixida. Finalment, s'ha dissenyat una PCB per a poder connectar elèctricament el xip fotònic i s'ha desenvolupat un mètode de mesura que ha permés tindre una resposta estable aconseguint demostrar multitud de respostes de filtres òptics amb el mateix dispositiu.
[EN] This thesis is focused on the modelling, design and experimental demonstration for the first time of Reconfigurable Reflective Arrayed Waveguide Grating (R-RAWG) device. In order to build this device, that can be employed in spectrometry, a silicon nitride platform termed CNM-VLC has been chosen since this material allows to operate in broad range of wavelengths. This platform has the necessary elements, but some limitations because the operation of this device had a low performance. Therefore, a methodology has been developed and validated, which has allowed to obtain better splitters. Also an inverted taper has been designed, which has considerably improved the coupling of light to the chip. This has been possible thanks to an exhaustive analysis of existing options in the literature, that has allowed choosing the best option to make a reconfigurable mirror on the platform without changing or adding new manufacturing steps. Reconfigurable mirrors have been demonstrated by using feedback splitters. Furthermore, codes have been developed to predict the behaviour of the actual device. With all the work done, a R-RAWG has been designed by using certain considerations so that it can operate over a broad wavelength range and the phase actuators are not in danger of being damaged. A code has also been developed for the modelling of the R-RAWG, which allows manufacturing imperfections to be considered, thanks to this, a method or algorithm called DPASTOR has been developed. DPASTOR resembles machine learning to optimise the response by just using the optical output power. Finally, a PCB and an assembly with the chip interconnected to it have been made and designed. Moreover, a measurement method has been developed, which has made it possible to have a stable response and to demonstrate a multitude of optical filter responses with the same device.
Fernández Vicente, J. (2021). Reconfigurable Reflective Arrayed Waveguide Grating on Silicon Nitride [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/165783
TESIS
Cleary, Justin. "Surface Plasmon Hosts for Infrared Waveguides and Biosensors, and Plasmons in Gold-Black Nano-Structured Films." Doctoral diss., University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3562.
Повний текст джерелаPh.D.
Department of Physics
Sciences
Physics PhD
Lawson, Robert Chester. "A study of periodic gratings in planar dielectric waveguides." Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-05022009-040647/.
Повний текст джерелаLi, Ming. "Optical waveguide chip-to-chip interconnection using grating couplers." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282202.
Повний текст джерелаLang, Ryan N. (Ryan Nathan). "Design of a high index contrast arrayed waveguide grating." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/32314.
Повний текст джерелаS.B. and S.M. theses issued separately.
Includes bibliographical references (p. 115-119).
Arrayed waveguide gratings (AWGs) are useful structures for the implementation of wavelength division multiplexing. The AWG consists of an input splitter, a dispersive waveguide array which creates the wavelength demultiplexing and multiplexing effects, and an output coupler. Because the dispersive waveguide array consists of bent waveguides, the size of an AWG is limited by the light loss in the bends. In their current form, silica-based gratings are too large to be made cheaply or to use as an integrated component. The proposed solution is to redesign the AWG using high index contrast materials for tight confinement of the waveguide modes and, consequently, low bend loss. A rough design is presented for a high index contrast AWG using multimode interference couplers as the coupling stages. The major components were simulated using finite difference time domain (FDTD) techniques to find low loss but rather high crosstalk. A second possible design is also presented, making use of a coupled waveguide array as the input element. The coupling coefficients of as many as 41 coupled waveguides were adjusted to create a Gaussian profile as an input to the dispersive section of the AWG. The output coupler, however, will make use of more standard free space diffraction techniques, making the overall concept a unique mixture of waveguide and free space optical elements.
by Ryan N. Lang.
S.B.
M.Eng.
Al-Awami, Moneer Hussein Baqir. "Experimental study of the interaction of laser light with liquid crystal guides and gratings." Thesis, University of Salford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253054.
Повний текст джерелаWildermuth, Eberhard. "Performance optimization of flat-top passband arrayed waveguide grating demultiplexers /." Zürich, 2000. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13440.
Повний текст джерелаNadler, Christoph. "Polarization insensitive arrayed waveguide grating wavelength multiplexers for optical communication /." Zürich, 1998. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=12957.
Повний текст джерелаKakehashi, S., H. Hasegawa, K. Sato, and O. Moriwaki. "Interleaved Waveband MUX/DEMUX Developed on Single Arrayed-Waveguide Grating." IEEE, 2008. http://hdl.handle.net/2237/12089.
Повний текст джерелаHu, Zhixiong. "Development of an integrated microspectrometer using arrayed waveguide grating (AWG)." Thesis, University of Glasgow, 2012. http://theses.gla.ac.uk/3439/.
Повний текст джерелаGong, Qian. "Input and output waveguide grating couplers: Theory, fabrication and testing." Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/185250.
Повний текст джерелаBates, Allen Keith. "Fabrication and characterization of variable groove depth grating waveguide couplers." Diss., The University of Arizona, 1994. http://hdl.handle.net/10150/186939.
Повний текст джерелаMOSHREFZADEH, ROBERT SHAHRAM. "THEORY AND FABRICATION OF SUB-MICRON GRATINGS ON NONLINEAR OPTICAL WAVEGUIDES." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184138.
Повний текст джерелаKultavewuti, Pisek. "Pulse Shaping Based on Integrated Waveguide Gratings." Thesis, 2012. http://hdl.handle.net/1807/32581.
Повний текст джерелаLiao, Xin-Yu, and 廖昕昱. "Vibration sensing and positioning applications of fiber Bragg gratings and arrayed waveguide gratings." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/ey7v73.
Повний текст джерела國立虎尾科技大學
光電工程系光電與材料科技碩士班
105
In this study, we combine fiber Bragg grating and arrayed waveguide grating to achieve vibration sensing system. The reflection wavelength of fiber Bragg grating is sensitive to strain, temperature and vibration. When the vibration signal applied to the fiber Bragg grating, it will caused the center wavelength changed. Utilize the slope of the arrayed waveguide grating pass band to accomplish light intensity modulation. Arrayed waveguide gratings can use multiple fiber Bragg gratings for multi-point measurements. We use two fiber Bragg grating sensors to measure vibration. We apply vibration signal between two fiber Bragg gratings. The oscilloscope shows the different time of two measured signals. We can calculated distance which is vibration signal between the two fiber Bragg gratings.