Abstract

Injection locking of one laser diode oscillator to another one has many applications, particularly in coherent communication systems. Injection locking has been used for FM signal amplification,¹ phase modulation,² mode stabilization,³ high data rate transmission, and FM sideband locking.⁴ Here we report on the locking of two slave laser (SL) diodes to different sidebands of a FM common master laser (ML) diode. A beat signal of high spectral purity is then generated by mixing the two SL outputs in a photodetector. We believe this to be the first report of the locking of more than one SL to a single ML. Sideband locking of laser diodes has application in microwave signal generation, control and stabilization of microwave oscillators, and multiplexed communication over optical fibers.

© 1983 Optical Society of America