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Performance evaluation due to crosstalk in a WDM system using multi-stage optical cross-connect based on FBG-OC

Performance analysis of a optical cross-connect (OXC) is carried out to find the effect of crosstalk due to multistage OXC in WDM system. The OXC is based on FBG and Optical Circulator (OC). The Crosstalk Power at the output of multistage FBC-OC based OXC is evaluated analytically. The bit error rate (BER) of WDM system with OXC in cascade is also evaluated. Results shows that for a given OXC parameter, the amount of crosstalk increases with the increase in the number of stages which is directly related to the number of input fiber. The system thus suffers penalty due to multistage OXC as the number of input fiber is increased.