Abstract

Microwave subcarrier multiplexing is potentially a practical and economical system for a local distribution and integrated services network (ISN). The novel microwave (subcarrier) division multiplexing (MDM) optical fiber communication system proposed here is implemented by utilizing two coherently related laser beams instead of just one, giving double-beam modulation (DBM). The beat of the two beams on detection by a photodetector automatically creates the required subcarriers. The major advantages of this DBM-MDM system are that extreme high frequency can be achieved; dispersion-induced harmonic and intermodulation distortions are essentially eliminated; the system is flexible for multichannel transmission and ISN; analog (video) and digital signals can be transmitted simultaneously; and transmitting and receiving frequencies can be easily electronically controlled and switched.

© 1989 Optical Society of America