Title :
Optical phase-locked loop using semiconductor laser diodes
Author_Institution :
University of Glasgow, Department of Electronics & Electrical Engineering, Glasgow, UK
Abstract :
A system for locking two semiconductor lasers in phase has been devised. It consisted of heterodyning two GaAlAs laser diodes and comparing the phase of the beat frequency signal with the phase of a reference RF local oscillator. The resulting phase error was used as a feedback signal and current fed back to the local oscillator laser to lock the two lasers in phase.
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; optical communication equipment; phase-locked loops; semiconductor junction lasers; GaAlAs laser diodes; III-V semiconductor; feedback signal; optical PLL; reference RF local oscillator; semiconductor laser diodes;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830051
