A study on an active square-law combining method for a polarization-diversity coherent optical receiver

Author

Shibutani, M. ; Yamazaki, S.

Author_Institution

NEC Corp., Kawasaki, Japan

Volume

1

Issue

7

fYear

1989

fDate

7/1/1989 12:00:00 AM

Firstpage

182

Lastpage

183

Abstract

A polarization-diversity coherent optical receiver which realizes ideal square-law combining with active gain control is described. This receiver can suppress the additional power penalty due to the demodulator dynamic range limitation by equivalently expanding the demodulator dynamic range. A low-power penalty less than 1 dB was attained with a 400-Mb/s FSK (frequency-shift keyed) single-filter detection system. Throughout a 25-h 183-km transmission experiment, the stable operation of this receiver was confirmed.<>

Keywords

demodulation; frequency shift keying; optical communication equipment; receivers; 183 km; 25 hr; 400 Mbit/s; FSK; active gain control; active square-law combining method; demodulator dynamic range; frequency-shift keyed; low-power penalty; polarization-diversity coherent optical receiver; power penalty; single-filter detection system; stable operation; transmission experiment; Degradation; Demodulation; Diversity reception; Dynamic range; Fluctuations; Frequency shift keying; Gain control; Optical mixing; Optical polarization; Optical receivers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.36032

Filename

36032