Title :
Novel square-law demodulator for use in coherent ASK/FSK heterodyne optical receivers
Author_Institution :
Marconi Italiana SpA, Genova, Italy
fDate :
6/8/1989 12:00:00 AM
Abstract :
A novel square-law demodulator with low input power requirements has been developed for use in ASK/FSK heterodyne optical receivers. 10-9 BER sensitivity better than -29 dBm was achieved for a 648 Mbit/s ASK signal with carrier scanned from 1 to 4 GHz. The flatness of the responsivity was better than +or-1 dB over the same input bandwidth.
Keywords :
amplitude modulation; demodulators; frequency shift keying; optical communication equipment; receivers; 1 to 4 GHz; 4 GHz; 648 Mbit/s; ASK signal; coherent ASK/FSK heterodyne optical receivers; low input power requirements; sensitivity; square-law demodulator;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19890542
