Design and performance analysis of WDM-FSO communication system using Polarization Shift Keying.

FSO is the best communication medium for data transmission because of its high bandwidth, effective deployability and maximum transmission data rates with very high security. In this research paper an optical network model has been designed in the optisystem for different modulation schemes with WDM to enhance the capacity of the system. Attenuations for different weather conditions in Dehradun have been calculated and the performance has been evaluated accordingly. The performance is analysed in terms of BER (Bit Error Rate), maximum Q-factor, and eye height for each of the modulation schemes at different transmission distances and different weather attenuations. Analysis comprehends that the polarization shift keying is the best modulation technique for the WDM-FSO communication network among all. Thus, we suggest a model for an optical communication network using WDM and PolSK modulation scheme for Dehradun (Uttarakhand), where internet service is not very easy due to its extreme weather variations and got the excellent performance. [ABSTRACT FROM AUTHOR]