Design and Implementation of Optical Signal Reinstatement Technique for High DPSK RZ Transceiver Scheme

Optical signal reinstatement (OSR) is a common technique used in high-speed communication systems. OSR can be achieved using various techniques such as; semiconductor optical amplifiers, optical parametric amplifiers, optical loop mirror, and etc. The existing OSR techniques of a maximum speed of 40 Gb/s for long haul communication of 300 km transmission distance offer the 10⁻¹⁰ BER of and noise (phase and amplitude) mitigation. Presently, the existing OSR techniques require low BER, strong noise rejection for more than 40 Gb/s degraded signal. In this work, optical signal restoration technique is developed for 100 Gb/s degraded signal for 400 km transmission distance. The proposed technique is designed using 2R and PSA. The benefit for using 2R with PSA is that 2R (re-amplify regenerate) the signal, while PSA is used to mitigate the amplitude and phase noises respectively. The developed technique is implemented for DPSK-RZ transceiver system and offers the BER of 10⁻²¹ and noise mitigation of more than 90% for DPSK-RZ transceiver system.