Influence of laser phase on 400-Mbit/s coherent optical DPSK system

Autor:	C.Y. Kuo, D.L. Tzeng, D.A. Ackerman, Jean-Marc Delavaux
Rok vydání:	1989
Předmět:	Physics business.industry Phase (waves) Laser Noise (electronics) Atomic and Molecular Physics and Optics law.invention Laser linewidth Optics law Phase noise Bit error rate business Sensitivity (electronics) Phase-shift keying
Zdroj:	Journal of Lightwave Technology. 7:520-524
ISSN:	1558-2213 0733-8724
Popis:	The influence of laser phase noise on a 400-Mb/s optical DPSK (differential phase-shift keying) system is experimentally investigated with linewidths ranging from 1.2 MHz to 8 MHz. This range corresponds to linewidth to bit rate ratios epsilon of 0.33-2%. The system performance with these nonzero linewidths is evaluated against a negligible linewidth performance baseline. The sensitivity degradation at a bit error rate of 10/sup -9/ increases from 1.8 to 7 dB as epsilon is increased from 0.33-1%. When epsilon is increased beyond 1%, bit error rate floors higher than 10/sup -9/ develop. These findings agree well with the existing theories and allow the generalization of these results to other bit rates, as well as establishing practical criteria for lasers to be used in DPSK systems. >
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::843ec1a38e958ec789d45693e3199550 https://doi.org/10.1109/50.16888 Zobrazit plný text záznamu