Title :
Optical DPSK heterodyne detection experiments using DBR laser diodes with external optical feedback
Author :
Emura, K. ; Shikada, M. ; Yamazaki, S. ; Komatsu, K. ; Mito, I. ; Minemura, K.
Author_Institution :
NEC Corporation, Opto-Electronics Research Laboratories, Kawasaki, Japan
Abstract :
High receiver sensitivity, with 7 dB improvement over a direct detection system, has been achieved in a 400 Mbit/s optical DPSK heterodyne detection experiment using DBR laser diodes with external optical feedback. The influence of the laser output phase noise was evaluated experimentally in good agreement with theory.
Keywords :
demodulation; distributed Bragg reflector lasers; feedback; optical communication; optical modulation; phase shift keying; semiconductor junction lasers; DBR laser diodes; error rate; external optical feedback; laser output phase noise; optical DPSK heterodyne detection; optical communication; receiver sensitivity;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19850794
