Performance Comparison of PS-QPSK and PM-QPSK Modulation Schemes in High Capacity Long Haul DWDM Optical Communication Link - TI Journals

Abstract: In this paper, performance of PS-QPSK modulation format has been compared with PM-QPSK in a high capacity, long haul DWDM optical communication link. Performance of both the formats is satisfactory up to 100 Gb/s but PS-QPSK has 38% more reach as compared to PM-QPSK and is found to be more resilient against PMD effects, which makes it more suitable for long haul optical communication.