ANALYSIS OF DISPERSION COMPENSATION TECHNIQUES IN DWDM OPTICAL NETWORKS

Abstract

Dense Wavelength Division Multiplexing (DWDM) is an extension of optical networking. DWDM devices combine the output of more
than eight optical transmitters for transmission across a single optical fiber. Problems like dispersion, cross talk and other non-linear effects
occur in optical networks. Dispersion is the spreading out of a signal as it travels down the fiber. Chromatic dispersion (CD) and
polarization mode dispersion affects the DWDM. Chromatic Dispersion is a major factor in the transmission of data over a long haul
application. To overcome the loss caused by CD, we can use different techniques.The proposed method focuses on the dispersion and its
compensation techniques on DWDM networks. In order to compensate for the dispersion, various compensation techniques like Fiber
Bragg Grating, Dispersion Compensation Fiber and Electronic Dispersion Compensation are employed. The DWDM architecture is
implemented using OptSim. These dispersion compensation techniques are to be analyzed for DWDM networks. The simulation results
show the performance of the DWDM system in terms of Bit Error Rate and Eye diagram.