Dissertations / Theses on the topic 'Wavelength division multiplexing'
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Parker, Michael Charles. "Dynamic holograms for wavelength division multiplexing." Thesis, University of Cambridge, 1997. https://www.repository.cam.ac.uk/handle/1810/251616.
Full textAhmadvand, Nima. "Wavelength division multiplexing cross connect networks." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ30066.pdf.
Full textSrinivas, B. S. "Wavelength division multiplexing technology and systems /." This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-03042009-040832/.
Full textSrinivas, Bindignavile S. "Wavelength division multiplexing technology and systems." Thesis, Virginia Tech, 1990. http://hdl.handle.net/10919/41416.
Full textCowin, Michael. "Integrated polymeric components for wavelength division multiplexing." Thesis, University of Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364964.
Full textTohme, Henri Edouard. "Dual channel bidirectional wavelength division multiplexing datalink." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/43061.
Full textMaster of Science
OLIVIERI, BRUNO SAPHA. "INTERROGATION SYSTEM OF FIBER BRAGG GRATING SENSORS USING TIME DIVISION MULTIPLEXING AND WAVELENGTH DIVISION MULTIPLEXING." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2004. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=5905@1.
Full textUm sistema de interrogação de sensores a rede de Bragg utilizando multiplexação no tempo e multiplexação no comprimento de onda é proposto e demonstrado. O sistema apresenta uma solução para a medição de grandezas associadas ao espectro de reflexão de redes de Bragg, possibilitando o aumento do número de sensores a rede de Bragg monitorados através de grandes distâncias em uma mesma fibra óptica, sem um aumento significativo dos custos. O aspecto inovador deste sistema reside na particular associação das seguintes características: o uso de fonte pulsada de banda larga, a disposição, em série, de um grande número de sensores a rede de Bragg de baixa refletividade, a técnica de reutilização dos mesmos comprimentos de onda nominais em grupos contendo vários sensores com comprimentos de onda nominais distintos e um processo de filtragem espectral e análise de sinais pulsados utilizando o filtro DWDM comercial. Aspectos teóricos e experimentais considerando os princípios de trabalho desta técnica são discutidos. Comparações entre resultados simulados e experimentais do sistema implantado mostram boa concordância. Resultados experimentais apontam uma faixa dinâmica de 1,7 nm, podendo encontrar aplicações em medição de temperatura com uma faixa de 150°C. Incertezas com valores médios abaixo de 20 picometros foram obtidas. Simulações experimentais apontam a possibilidade de utilização de um número de aproximadamente 70 sensores com 0,4% de refletividade, por comprimento de onda. Considerando a largura de banda do dispositivo DWDM (1539- 1565 nm) utilizado neste sistema, e um espaçamento de 7 nm por comprimento de onda nominal de sensor, extrapolações mostram que este número pode chegar a 210 sensores em três diferentes comprimentos de onda nominais de sensor. Considerando as bandas C e L este número pode chegar a aproximadamente 1000 sensores em 14 diferentes comprimentos de onda nominais de sensor.
An interrogation system of fiber Bragg grating sensors using time division multiplexing and wavelength division multiplexing is proposed and demonstrated. The system presents a solution to measure the magnitudes associated to the reflection spectrum of the fiber Bragg gratings, making possible to increase the number of the Bragg gratings sensors monitored through large distances at the same fiber optic, without a great increase in the costs. The innovative aspect of this system is the particular association of the following characteristics: the use of a pulsed broad band source, the disposition, in series, of a large number of low reflectivity Bragg gratings sensors, the reusing technique of the same nominal wavelengths in groups containing several numbers of sensors with distinct nominal wavelengths, and a spectral analyzing and filtering process of pulsed signals using a commercial DWDM filter. Theoretical and experimental aspects regarding the working principles of this technique are discussed. Comparisons between experimental and simulated results show a good agreement. Experimental results indicate that a dynamic range of 1,7 nm was obtained. It can be used in temperature measurement systems, with a 150°C range. Uncertainties equivalent to approximately 20 picometers was obtained. Experimental simulations indicate that it would be possible to use a number of approximately 70 sensors with 0,4% reflectivity at each nominal sensor wavelength. Considering the DWDM filter bandwidth (1539-1565 nm) used in this system, and a spectral separation of 7 nm by nominal sensor wavelength, extrapolations indicate that a number of 210 sensors can be obtained, in three different nominal sensor wavelength. Using the C-band and the L-band, a number of 1000 sensors can be obtained, in fourteen different nominal sensor wavelength.
Buyuksahin, Oncel F. Feza. "Modulation Formats For Wavelength Division Multiplexing (wdm) Systems." Phd thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12611039/index.pdf.
Full textLepley, Jason J. "Frequency stabilisation for dense wavelength division multiplexing systems." Thesis, University of Essex, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310059.
Full textQiao, Jie. "Dense wavelength division multiplexing (DWDM) for optical networks." Access restricted to users with UT Austin EID, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3035169.
Full textDeng, Xuegong. "High performance wavelength-division multiplexing schemes for optical networks." Access restricted to users with UT Austin EID Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3031039.
Full textKhattab, Tamer. "Optical Code Division Multiplexing for sub-wavelength switching systems." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/31083.
Full textApplied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate
Paiam, Mohammad Reza. "Applications of multimode interference couplers in wavelength-division multiplexing." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq23053.pdf.
Full textProvost, Lionel Andre. "Simultaneous all-optical processing of wavelength division multiplexing channels." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/210988/.
Full textLuo, Xubin. "Wavelength Division Multiplexing Optical Networks for Supporting Grid Computing." Wright State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=wright1221753325.
Full textChu, Xiaowen. "RWA and wavelength conversion in wavelength-routed all-optical WDM networks /." View Abstract or Full-Text, 2003. http://library.ust.hk/cgi/db/thesis.pl?COMP%202003%20CHU.
Full textIncludes bibliographical references (leaves 127-134). Also available in electronic version. Access restricted to campus users.
Leith, Christopher. "Analytical models for all-optical networks employing wavelength division multiplexing and wavelength conversion." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0002/MQ42649.pdf.
Full textWei, Shi. "Silicon photonic filters for wavelength-division multiplexing and sensing applications." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43116.
Full textRothnie, Derek Malcolm. "Link optimisation for optical WDM transmission systems." Thesis, University College London (University of London), 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298281.
Full textCen, Min. "Study on Supervision of Wavelength Division Multiplexing Passive Optical Network systems." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-42362.
Full textBoeck, Robert. "High performance silicon photonic filters for dense wavelength-division multiplexing applications." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/57688.
Full textApplied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate
Fay, Martin Freestone. "True 2D wavelength division multiplexing, binary superimposed gratings and their applications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0001/MQ34131.pdf.
Full textThomas-Dupuis, Frédéric. "Investigation of two-dimensional optical formatting for dense wavelength division multiplexing." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=79265.
Full textDods, Sarah D. "Homodyne crosstalk in wavelength-division multiplexed ring and cus networks /." Connect to thesis, 2000. http://eprints.unimelb.edu.au/archive/00000597.
Full textHandley, Michael Robert. "Dynamic wavelength assignment in WDM passive optical networks." Thesis, Manchester Metropolitan University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367729.
Full textTaveira, Palmerston Donizzeti. "Caracterização e análise de desempenho dos amplificadores ópticos Raman discretos em sistemas de comunicações ópticas na banda O." Universidade Presbiteriana Mackenzie, 2006. http://tede.mackenzie.br/jspui/handle/tede/1414.
Full textThe optical amplifier has improved the optical communication systems because they lead to an increase in transmission capacity of medium and long haul optical systems, with technological advantages over electronic regenerators. The optical amplifier are relatively simple to deploy and can be used in optical links without any troubles regarding signal transmission rate improvement and signal modulation changes, as a consequence of these issues they can substitute the electronic regenerator enhancing security with low operation cost. The CWDM systems multiplex optical wavelength with a low cost in metropolitan networks. It was developed to connect backbone networks to metro core and edge networks with cost saving over DWDM systems but lower transmission capacity. We have developed and characterized in our research a discrete Raman amplifier for operation in O band. We connected the amplifier in a point to point CWDM in order to analyze the gain on the system transmission capacity and the impairments that appears in the system. Working with a eight channel CWDM in O band, modulated with 2.5 Gbit/s, we have demonstrated that we can use a discrete Raman amplifier in single configurations, pre amplifier, booster and line amplifier and shared configuration with booster and pre amplifier to increase the transmission capacity that means, increase the length of the optical link. We have increased in 110% the length of the optical link with a shared configuration of two amplifiers with 10 dB gain for each one.
Os amplificadores ópticos revolucionaram a tecnológica das comunicações ópticas, pois possibilitaram o aumento da capacidade de transmissão dos sistemas ópticos de média e longa distância, com vantagens tecnológicas sobre os regeneradores. Estes dispositivos são relativamente simples de serem desenvolvidos, utilizam poucos componentes e podem ser utilizados nas redes ópticas de forma transparente a taxa de transmissão e modulação do sinal. Substituem assim, com vantagens, os regeneradores eletrônicos, agregando segurança e baixo custo à operação das redes ópticas. Os sistemas CWDM realizam a multiplexação óptica de comprimentos de onda a um baixo custo em redes metropolitanas. São utilizados para conectar as redes de transporte de alta capacidade às redes de acesso, trazendo uma larga vantagem em custo sobre os sistemas DWDM, porém com menor capacidade de transmissão. Nosso trabalho de pesquisa consistiu em desenvolver e caracterizar um amplificador Raman discreto na banda O (1260 a 1360 nm), aplicando este amplificador em um sistema CWDM ponto a ponto com taxa de transmissão de 2.5 Gbit/s por canal e analisando o aumento na capacidade de transmissão e os efeitos que degradam o sinal transmitido. Trabalhando com um sistema CWDM com oito canais na banda O, demonstramos que podemos utilizar um amplificador Raman discreto nas configurações isoladas de pré-amplificador, booster e amplificador de linha e na configuração simultânea de booster e pré-amplificador para aumentar a capacidade de transmissão. Aumentamos o comprimento original do enlace em 110%.
Akanbi, Oladeji Bamidele. "Bi-directional Dense Wavelength Division Multiplexed Systems for Broadband Access Networks." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/13964.
Full textGETANEH, WORKALEMAHU AGEREKIBRE. "Optical Time Domain Reflectometer based Wavelength Division Multiplexing Passive Optical Network Monitoring." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-105149.
Full textOrazi, Richard Joseph. "Fabrication and characterization of narrow channel fused fiber wavelength division multiplexing couplers." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2007. http://wwwlib.umi.com/cr/ucsd/fullcit?p3278315.
Full textTitle from first page of PDF file (viewed November 7, 2007). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references.
Harris, Mitchell T. "Analysis of semiconductor optical amplifiers in VCSEL based wavelength division multiplexing communication /." abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1446799.
Full text"May, 2007." Includes bibliographical references (leaves 82-83). Online version available on the World Wide Web. Library also has microfilm. Ann Arbor, Mich. : ProQuest Information and Learning Company, [2007]. 1 microfilm reel ; 35 mm.
Riziotis, Christos. "Advanced Bragg grating based integrated optical devices for wavelength division multiplexing systems." Thesis, University of Southampton, 2002. https://eprints.soton.ac.uk/15489/.
Full textMalaeb, Maadad Assaad 1963. "Noise and jitter analysis for wavelength division multiplexing optical heterodyne PSK receivers." Thesis, The University of Arizona, 1992. http://hdl.handle.net/10150/278132.
Full textCastleford, David. "Optical crosstalk in WDM Fibre-Radio networks /." Connect to thesis, 2002. http://eprints.unimelb.edu.au/archive/00000405.
Full textWang, Xie, and 王勰. "Multiwavelength optical sources based on fiber optical parametric process." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/206438.
Full textpublished_or_final_version
Electrical and Electronic Engineering
Doctoral
Doctor of Philosophy
Montgomery, Michael C. "DMACS : a media access protocol for single-hop wavelength division multiplexed lightwave networks /." Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06232009-063355/.
Full textPelegrina, Bonilla Gabriel [Verfasser]. "Asymmetric fused fiber couplers for wavelength- and space-division multiplexing / Gabriel Pelegrina Bonilla." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2015. http://d-nb.info/1077017774/34.
Full textGross, Michael Charles. "High-rate, short-pulse sources:jitter and pedestal level in optical time-division multiplexing." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/5405.
Full textAnan, Muhammad Taqiuddin Chaudhry Ghulam M. "SWAP a slotted wavelength assignment pipeline scheduler for next-generation optical burst switches (OBS) /." Diss., UMK access, 2008.
Find full text"A dissertation in electrical & computer engineering and telecommunications networking." Advisor: Ghulam M. Chaudhry. Typescript. Vita. Title from "catalog record" of the print edition Description based on contents viewed Sept. 12, 2008. Includes bibliographical references (leaves 152-169). Online version of the print edition.
Zhu, Jiannan. "Novel energy-efficient DWDM systems for low-cost optical communication applications." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709467.
Full textAbujnah, Nabeil Abduljallil Abubaker. "Numerical modelling of optical micro-cavity ring resonators for WDM networks." Thesis, University of South Wales, 2011. https://pure.southwales.ac.uk/en/studentthesis/numerical-modelling-of-optical-microcavity-ring-resonators-for-wdm-networks(ac752a5d-5bf1-4ee6-8345-c20fe8aea769).html.
Full textLo, Kung-meng. "Routing and protection issues in optical WDM mesh networks." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2008. https://ro.ecu.edu.au/theses/222.
Full textKang, Byungkyu. "Design of survivable WDM network based on pre-configured protection cycle." Connect to thesis, 2006. http://portal.ecu.edu.au/adt-public/adt-ECU2007.0015.html.
Full textZhou, Chuang. "Multimode wavelength division multiplexing and demultiplexing using substrate-guided waves and volume holographic gratings /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.
Full textGross, Michael Charles. "High-rate, short-pulse sources jitter and pedestal level in optical time-division multiplexing /." Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04082004-180157/unrestricted/gross%5Fmichael%5Fc%5F200312%5Fphd.pdf.
Full textPoudel, Sunil. "Study on Fault Detection andLocalization for Wave length Division Multiplexing Passive Optical Network." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-129299.
Full textSaad, Mohamed Elsayed Mostafa Luo Zhi-Quan. "Design of optical networks: performance bounds, complexity and algorithms /." *McMaster only, 2004.
Find full textChi, Yu-Chieh, and 紀裕傑. "Hybrid Wavelength-Division-Multiplexing Transport Systems." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/qz9hjt.
Full text國立臺北科技大學
光電工程系研究所
95
Wavelength-division-multiplexing (WDM) transport system can transmit many signals in single fiber, so have benefits like capacity upgrade and network flexibility, especially for Radio-on-Fiber (ROF) transport system and Passive Optical Network (PON) applications. Hybrid WDM transport system that uses different wavelengths to transmit AM-VSB analog video, 64/256-QAM digital passband and OC-48/OC-192 digital baseband signals is very useful for an optically amplified fiber network providing CATV, internet and telecommunication services. Current WDM transport systems are composed of distributed feedback (DFB) laser diodes and erbium-doped fiber amplifiers (EDFAs) throughout the single mode fiber (SMF) link. In this thesis, we exhibit several different ways to build the WDM transport systems and improve systems’ transmission performance. First, a cost-effective architecture is proposed for deployment in WDM transport systems, as demonstrated by the vertical cavity surface emitting lasers (VCSELs) and semiconductor optical amplifier (SOA) with external light injection technique. VCSEL is gradually used to replace DFB laser diodes for the 1.55μm wavelength window in lightwave transport systems, because it’s with a single mode with narrow linewidth and low cost. Amplify the optical signal by use SOA to replace EDFA, and use the external light injection technique to reduce the SOA-induced distortion and crosstalk. Second, we use amplified spontaneous emission (ASE) light source and WDM demultiplexer (DEMUX) to demonstrate radio-on-DWDM transport system. The ASE light source, which is supplied by EDFA output light source. The ASE light source can be efficiently divided into many channels by using DEMUX or optical bandpass filters (OBPFs). Therefore, the ASE source can be changed into a similar DFB laser diode characteristic by using the OBPF. In addition, employs LEAF to replace the SMF as the transmission medium. Third, we proposed a radio-on-DWDM transport system based on injection-locked Fabry-Perot (FP) LDs. Multiple longitudinal FP LD exhibits a wide spectrum spread. This wavelength spread will cause higher intensity noise and higher fiber dispersion-induced nonlinear distortions. When an FP LD is injection-locked, its multiple longitudinal modes will be changed into a similar single longitudinal mode characteristic, thus it can be utilized as a cheap light source in radio-on-DWDM architecture. Finally, we proposed and demonstrated a potentially cost-effective hybrid WDM transport system based on mutually injection-locked FP LDs. By mutual injection between two FP LDs, we realized a broadband light source with flatness and multimode output spectrum. This proposed hybrid WDM transport system used two wavelengths (modes) for AM-VSB video signal, one for 256-QAM digital passband and one for OC-48 digital baseband signals. Since our proposed WDM transport system does not use multiple expensive DFB LDs, it reveals a prominent one with simpler and more economic advantages than that of traditional hybrid WDM transport systems.
wu, Chi-Shou, and 吳啟守. "A Dense Wavelength Division Multiplexing Scheme using Wavelength Multiplexing in Photorefractive Volume Holography." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/39378018339086734494.
Full text中原大學
應用物理研究所
90
Dense-wavelength division multiplexing (DWDM) is an important scheme for increasing communication capacity in fiber optic communication. There are various approaches for implementing DWDM and each approach has its advantages and disadvantages. A successful DWDM should have a large number of channels (for which a narrow 3-dB bandwidth or channel spacing is needed), and environmental resilience. Since volume holography has been used in information storage with various multiplexing schemes, including angular, wavelength, and phase multiplexing, for increasing the storage capacity, it is easy to conclude that there is a potential application of volume holography in DWDM. Since the grating period in a typical reflection hologram is much smaller than that of a transmission hologram, a reflection hologram can result in a larger storage capacity than that of a transmission hologram. The information storage capacity of a volume hologram is determined by its Bragg selectivity. There are various approaches for calculating this selectivity, which includes the Coupled Wave Theory, Born’s Approximation, and recently, the Phase Summation Method. Since the Coupled Wave Theory can take into account both linear and nonlinear interaction between the incident light and the hologram grating, the Bragg selectivity derived from this theory represents the most accurate result. However, it provides no formula for predicting either the HWFZ (half width at first zero) or the FWHM (full width at half maximum), which is essential for designing appropriate bandwidth in DWDM. This thesis has verified that the Bragg selectivity calculated by using the Phase Summation Method in the regime of low diffraction efficiency is the same as that of Coupled Wave Theory. This thesis is the first to derive a formula for calculating HWFZ for the Bragg selectivity of reflection hologram using the Phase Summation Method. This thesis also proposes a DWDM scheme using volume holography and is the first to establish a unique design protocol for DWDM using a reflection hologram as detailed below. However, the HWFZ for each center wavelength increases as the wavelength increases. In order to make the bandwidth of each center wavelength must be equal. This thesis is the first to propose an innovative approach to combine both angular multiplexing with wavelength multiplexing in order to keep the bandwidth constant within the S, C, and L band of the fiber transmission window. Using the above results, this thesis has provided a DWDM design, which consists of 2048 channels and a channel spacing of 0.05nm using a photorefractive crystal of LiNbO3 and reflection holography. Keywords:Dense wavelength division multiplexing, fiber optic communication, Photorefraction, reflection hologram, volume holography, angular multiplexing, wavelength multiplexing, LiNbO3
Ayadi, Fakher. "Optical fiber networks : wavelength division and code-division multiplexing." Thesis, 1994. http://spectrum.library.concordia.ca/3834/1/NN10821.pdf.
Full text"Tunable devices for wavelength-division multiplexing communications." 2000. http://library.cuhk.edu.hk/record=b6073261.
Full text"August 2000."
Thesis (Ph.D.)--Chinese University of Hong Kong, 2000.
Includes bibliographical references.
Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web.
Mode of access: World Wide Web.
Abstracts in English and Chinese.