Phase-noise-canceled differential phase-shift-keying (PNC-DPSK) for coherent optical communication systems

Author

Tamura, Kohichi ; Alexander, Stephen B. ; Chan, Vincent W S ; Boroson, Don M.

Author_Institution

MIT Lincoln Lab., Lexington, MA, USA

Volume

8

Issue

2

fYear

1990

fDate

2/1/1990 12:00:00 AM

Firstpage

190

Lastpage

201

Abstract

A modulation scheme using a nonlinear demodulation process, phase-noise-canceled differential phase-shift keying (PNC-DPSK), is used to circumvent the effects of phase noise in a phase-shift keying (PSK) system. A theoretical description of the system is given, and results of an experimental test system are shown to be in good agreement with the predictions. In particular, it is shown that the phase-noise-induced bit error rate (BER) floor can be eliminated despite using lasers with linewidths comparable to the data rate. Furthermore, for an optimized PNC-DPSK system, the degradation at high signal-to-noise compared to heterodyne PSK with ideal sources (i.e. no phase noise) should only be ≈3 dB

Keywords

optical communication; phase shift keying; 3 dB; coherent optical communication systems; modulation scheme; nonlinear demodulation process; phase-noise-canceled differential phase-shift keying; Bit error rate; Degradation; Demodulation; Differential phase shift keying; Laser noise; Laser theory; Phase modulation; Phase noise; Phase shift keying; System testing;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.47871

Filename

47871