Title :
Subcarrier multiplexed coherent lightwave systems for video distribution
Author :
Olshansky, Robert ; Gross, Richard ; Schmidt, Mark
Author_Institution :
GTE Lab., Waltham, MA, USA
fDate :
9/1/1990 12:00:00 AM
Abstract :
The application of subcarrier multiplexing techniques to coherent lightwave systems designed for video transmission is described. The theory of the intrinsic receiver sensitivity of multichannel coherent SCM (subcarrier multiplexing) systems is presented. Specific implementations of SCM coherent systems transmitting 60 FM video channels and 20 100 Mb/s FSK (frequency shift keying) channels are described. It is shown that a simple phase noise canceling circuit can be implemented, which allows these systems to be built with wide-linewidth DFB (distributed feedback) lasers. Several applications of multichannel coherent SCM systems to video distribution networks are proposed
Keywords :
cable television; carrier communication; frequency modulation; frequency shift keying; multiplexing; optical links; video signals; 100 Mbit/s; DFB lasers; FM video channels; FSK; coherent lightwave systems; frequency shift keying; multichannel systems; phase noise canceling circuit; receiver sensitivity; subcarrier multiplexing; video distribution; video transmission; Distributed feedback devices; Frequency modulation; Frequency shift keying; Local oscillators; Masers; Microwave oscillators; Optical feedback; Optical receivers; Optical sensors; Tunable circuits and devices;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
