High capacity phase/amplitude modulated optical communication systems and nonlinear inter-channel impairments
Date
2012-04-17
Authors
Tavassoli, Vahid
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Abstract
This thesis studies and mathematically models nonlinear interactions among channels
of modern high bit rate (amplitude/) phase modulated optical systems. First,
phase modulated analogue systems are studied and a differential receiving method is
suggested with experimental validation. The main focus of the rest of the thesis is
on digital advanced modulation format systems. Cross-talk due to fiber Kerr nonlinearity
in two-format hybrid systems as well as 16-QAM systems is mathematically
modelled and verified by simulation for different system parameters. A comparative
study of differential receivers and coherent receivers is also given for hybrid systems.
The model is based on mathematically proven assumptions and provides an intuitive
analytical understanding of nonlinear cross-talk in such systems.
Description
Keywords
optical communications, fiber nonlinearities, XPM, advanced optical modulation formats, optical phase modulation