Title :
Heterodyne optical phase-locked loop by confocal Fabry-Periot cavity coupled AlGaAs lasers
Author :
Shin, Chul-Ho ; Ohtsu, Motoichu
Author_Institution :
Graduate Sch. at Nagatsuta, Tokyo Inst. of Technol., Yokohama, Japan
fDate :
4/1/1990 12:00:00 AM
Abstract :
Two external confocal Fabry-Perot cavity-coupled 0.83- mu m AlGaAs lasers phase-locked to one another by a heterodyne optical phase-locked loop are discussed. The phase error under phase-locking conditions was measured using the square root of the Allan variance. The result confirmed that the heterodyne signal was a full replica of the spectrum of the reference RF signal within the loop bandwidth. The estimated phase-error variance was 0.02 rad/sup 2/, i.e. approximately=8.1 degrees .<>
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; optical communication equipment; phase-locked loops; semiconductor junction lasers; 0.83 micron; AlGaAs lasers; Allan variance; III-V semiconductor; external confocal Fabry Perot cavity coupled AlGaAs lasers; heterodyne optical phase-locked loop; heterodyne signal; loop bandwidth; phase-error variance; reference RF signal; Frequency; Gas lasers; Laser feedback; Laser tuning; Optical coupling; Optical feedback; Optical filters; Optical mixing; Phase locked loops; Semiconductor lasers;
Journal_Title :
Photonics Technology Letters, IEEE
