Title :
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
fDate :
7/1/1989 12:00:00 AM
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;
Journal_Title :
Photonics Technology Letters, IEEE
