Master's Dissertation
DOI
https://doi.org/10.11606/D.18.2010.tde-06052010-153059
Document
Author
Full name
Guilherme Enéas Vaz Silva
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2010
Supervisor
Committee
Romero, Murilo Araujo (President)
Pontes, Maria José
Rosolem, João Batista
Title in Portuguese
Estudo de topologias para redes WDM-PON
Keywords in Portuguese
Fontes ópticas centralizadas
TDM-PON
WDM-PON
Abstract in Portuguese
A demanda de largura de banda exigida pelos usuários de redes de acesso vem aumentando rapidamente e a rede óptica passiva baseada em multiplexação por divisão de comprimento de onda (WDM-PON) tem se destacado como a tecnologia capaz de suprir essa demanda. Dessa forma, este trabalho conduz, inicialmente, uma comparação entre uma rede WDM-PON ideal e uma rede TDM-PON, discutindo também aspectos de segurança desta última, bem como estratégias de migração entre estes dois esquemas. Devido ao custo elevado da WDM-PON em seu esquema original, investigou-se em seguida as principais arquiteturas alternativas relatadas na literatura, em busca de maior viabilidade de implementação. Com base nesse estudo, fez-se então uma análise mais profunda sobre topologias recentes derivadas da RITENET, referenciadas na literatura como arquiteturas baseadas em fontes ópticas centralizadas (CLS). Tais configurações são baseadas no travamento de diodos lasers Fabry-Pérot através da injeção do sinal de ASE de um EDFA e foram estudadas por meio de simulações computacionais empregando o software OptiSystem 8.0.
Title in English
Study of network topologies for WDM-PON
Keywords in English
Centralized light source
TDM-PON
WDM-PON
Abstract in English
The demand for bandwidth by access networks users has increased rapidly and the Wavelength Division Multiplexing - Passive Optical Network (WDM-PON) has been pointed out as the technology capable of meeting this demand. In this framework, this work initially carries out a comparison between an ideal WDM-PON network and a TDM-PON network, also discussing TDM-PON security issues as well as migration strategies from TDM-PON to WDM-PON configurations. Next, taking into account the high implementation cost of the WDM-PON original scheme, we investigated alternative topologies available in the literature. Based on this study, we performed a more in-depth analysis regarding recently proposed topologies, derived from the RITENET, which are refered at the literature as centralized light sources (CLS) based architectures. Such networks are based on the locking of Fabry-Pérot lasers diodes through the injection of the ASE signal from an EDFA and were studied by using the software OptiSystem 8.0.
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Guilherme.pdf (3.28 Mbytes)
Publishing Date
2010-05-21