Abstract: “In this paper, the performance ofRZDPSK and NRZ-DPSK modulation techniques with/without dispersion compensating fiberin optical communication system has been analyzed. Dispersion compensating fibers are developingvery fast to gain the dispersion compensation of real value and perfect coupling to fibers to sustainwavelength stability. A effort is shown to improve the performance of the system in terms of bit error rate (BER) and Q-value by proposing a combination of fibre length by using SMF-DCF for RZ-DPSK and NRZ-DPSK modulation techniques. The combination of SMF-DCF improves the optical distance. The BER and Qvalue are observed for RZ-DPSK and NRZ-DPSK at the transmission rate of 10 Gb/s.”

Keywords: Dispersion compensation, BER, Qvalue, DCF, SMF, RZ-DPSK and NRZ-DPSK.