A Study on Frequency Intervals of Light Waves for the Multiplexed PSK Fiber-Optic Transmission

Abstract

This report describes an allowable frequency interval for optical PSK coherent transmission. An optical signal by the direct optical phase modulation occupies wider transmission band width than that by the intensity modulation with a microwave subcarrier. A computer simulation shows that the latter can be received under an adjacent allocation, whereas the former suffers from large penalty.