Comparison study of hybrid system based on DPSK modulation for all optical access networks

In this paper, different detection technique is presented through bit rate 1Gbps. Advanced modulation technique is used for enhancing the performance of optical access network. Differential phase shift keying (DPSK) has significant attention for the researcher during last two decades. Optisystem version 12 has been employ for investigate the transmission capability of the hybrid system. The comparison analysis reported that performance of system is specified over BER or Q value with refer to other parameters. The comparison results are shown that direct detection technique at bit rate 1Gbps which support maximum 15km fiber length where the expected BER (<;10-09), whereas the AND subtraction detection technique can transmit signal up to 12km fiber length.