Abstract:
The main aim of this thesis is to design and do performance analysis of 32, 64 and 128
channels DWDM system for three different amplifier configurations which are EDFA,
Raman and OA amplifiers where each channel having 10 Gbps data rate multiplexed with
frequency spacing of 100 GHz. Dispersion is an important factor to be considered while
designing a DWDM system. Dispersion affects the penalties due to various types of fiber
nonlinearities. Single mode fiber is preferred for long distance communication over
Multimode fiber. In this proposed work Optisystem 16.0 commercial optical simulator is
used to analyze the performance of 32, 64 and 128 channels DWDM system for three
different amplifier configurations which are EDFA, Raman and OA amplifiers. The system
performance is enhanced by using Dispersion compensation fiber to reimburse for the
dispersion formed by single mode fiber. The system performance is imperfect due to the
dispersion. In order to recompense this, we have used Dispersion Compensation Fiber
(DCF). Between amplifier spans standard single-mode fiber is used, but at each amplifier
position, dispersion compensating fiber having a negative chromatic dispersion is
presented. By using this we have effectively designed a DWDM system with 32/64/128
channels each having 10 Gbps data rate multiplexed with frequency spacing of 100 GHz.
It is apprehended that, in coming future, DWDM can appear as an auspicious technique to
escalate the capacity and meet the bandwidth constraint. This work can further be stretched to more number of channels i.e. 256 channels or more with different frequency spacing
