Title :
Five-channel coherent heterodyne subcarrier multiplexed system
Author :
Gross, R. ; Olshansky, R. ; Hill, P.
Author_Institution :
GTE Labs. Inc., Waltham, MA, USA
fDate :
7/1/1989 12:00:00 AM
Abstract :
Results of a coherent digital-subcarrier multiplexed (SCM) lightwave system are described. Five frequency-shift-keyed channels at 100 Mb/s each were transmitted using microwave subcarriers. With a phase modulation index of beta =0.19, a bit error rate of 10/sup -9/ was achieved with a detected optical power of -33 dBm. This is a 14-dB improvement in receiver sensitivity over a comparable direct-detection SCM system.<>
Keywords :
digital communication systems; frequency shift keying; multiplexing equipment; optical links; phase modulation; 100 Mbit/s; SCM; bit error rate; coherent digital subcarrier multiplexed lightwave system; detected optical power; five channel coherent heterodyne subcarrier multiplexed system; frequency-shift-keyed channels; microwave subcarriers; phase modulation index; receiver sensitivity; Frequency shift keying; Laser tuning; Optical feedback; Optical filters; Optical mixing; Optical modulation; Optical noise; Optical receivers; Optical sensors; Optical transmitters;
Journal_Title :
Photonics Technology Letters, IEEE
