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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Investiga??o de um regenerador totalmente ?ptico sintoniz?vel baseado em fibra altamente n?o-linear e efeito de mistura de quatro ondas / Investigation of an all-optical tunable regenerator device based on FMW and HNLF

Miranda, Uriel Ramon Cris?stomo de 26 June 2013 (has links)
Made available in DSpace on 2016-04-04T18:31:37Z (GMT). No. of bitstreams: 1 Uriel Ramon Crisostomo de Miranda.pdf: 2534131 bytes, checksum: cc07c4aea1cb66b02b0ddb169a1a1628 (MD5) Previous issue date: 2013-06-26 / This study aimed to investigate by means of simulations a tunable device capable of regenerating a NRZ-OOK modulated, 10 Gb/s optical signals in an all-optical way. The principle employed for regenerating was the FWM effect in two stages of DS-HNLF. We evaluated the simulations results by comparing estimated bit error rate at the input and output of the regenerator device. The results suggest that it is possible to regenerate all channels in C-band, for optical systems, using the same device only by adjusting parameters that are settable in commercial optical devices such as optical power and frequency of lasers. There was improvement of at least seven orders of magnitude for any C-band channel with input BER below 10-7. Such results, always using the same optical components, suggest that alloptical tunable regenerators can be constructed experimentally and could replace conventional electrical regenerators. / Este trabalho teve como objetivo investigar por meio de simula??es um dispositivo sintoniz?vel capaz de regenerar sinais ?pticos com modula??o NRZ-OOK de 10 Gb/s de maneira totalmente ?ptica. Como princ?pio para regenera??o empregouse o efeito de mistura de quatro ondas em dois est?gios de fibra altamente-n?olinear. Avaliou-se o resultado das simula??es atrav?s da compara??o de estimativas de taxa de erro de bit entre os sinais de entrada e sa?da do regenerador. Os resultados mostraram que ? poss?vel regenerar canais de toda a banda C para sistemas ?pticos utilizando o mesmo dispositivo, ajustando-se apenas par?metros que s?o configur?veis em dispositivos ?pticos comerciais, como pot?ncia e frequ?ncia de lasers cont?nuos. Observou-se melhora de no m?nimo sete ordens de grandeza para qualquer canal da banda C com BER de entrada abaixo de 10-7. Tais resultados, utilizando-se sempre os mesmos componentes ?pticos, sugerem que regeneradores totalmente ?pticos sintoniz?veis podem ser constru?dos experimentalmente e poderiam substituir regeneradores el?tricos convencionais.

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