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Thesis (Ph.D.) -- McMaster University, 2002. / Letter in title is Greek letter [mu]. Includes bibliographical references (leaves 135-142). Also available via World Wide Web.

Thesis (M.S.)--Worcester Polytechnic Institute. / Keywords: FDTD; Linear interpolation; MEMS; NEMS; Photonic crystals; Wavelength conversion; Frequency conversion; Doppler. Includes bibliographical references (leaves 107-114).

Thesis (M. App. Sc.)--Carleton University, 2003. / Includes bibliographical references (p. 73-78). Also available in electronic format on the Internet.

Thesis (Ph.D.) - Carleton University, 2006. / Includes bibliographical references (p. 91-100). Also available in electronic format on the Internet.

Thesis (Ph. D.)--University of Texas at Austin, 2005. / Supervisor: Ray T. Chen. Vita. Includes bibliographical references.

Thesis (Ph.D.) - University of Queensland, 2004. / Includes bibliography.

Thesis (Ph.D.)--University of Nebraska-Lincoln, 2006. / Title from title screen (site viewed on September 12, 2006). PDF text of dissertation: 149 p. : ill. ; 0.72Mb. UMI publication number: AAT 3209965. Includes bibliographical references. Also available in microfilm and microfiche format.

Made available in DSpace on 2016-03-15T19:37:40Z (GMT). No. of bitstreams: 1 Palmerston Donizzeti Taveira.pdf: 3709250 bytes, checksum: f7776004371e059d73f0d20c8d735c07 (MD5) Previous issue date: 2006-08-02 / The 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%.