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The system performance of single channel OFDM at 10-Gbps data rate using phase modulation under the effect of Raman amplifier and varying cyclic prefix of OFDM signal is evaluated. Pump power of single pumping type co-propagating Raman amplifier is varied and the results are analyzed for different fiber length through simulation. Raman gain variation is observed with increasing Raman pump power and it shows that increasing the pump power will improve the system performance. Also it reveals the fact that with an application of Raman amplifier the transmission distance will increase. Further received electrical power is observed with variation in cyclic prefix. Electrical output power is detected in each case. Moreover optical spectrums are examined with and without amplifier.

Effect of Raman Amplifier and Cyclic Prefix on O-OFDM System Using Phase Modulation