Title :
Frequency locking of semiconductor laser using PSK modulated signal
Author :
Levesque, Martin ; Cyr, N. ; Tetu, M. ; Tremblay, P.
Author_Institution :
Dept. de Genie Electrique, Laval Univ., Quebec City, Que., Canada
Abstract :
A random PSK modulated signal generated with an optical waveguide phase modulator is used to obtain an error signal and lock the frequency of an AlGaAs semiconductor laser to the 7Rb D2 line. The measured error signal is similar to that obtained with sinusoidal phase modulation under the same conditions. The technique could be applied to longer wavelength lasers and other types of laser that cannot be directly modulated such as fibre lasers.
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; optical communication equipment; optical modulation; phase shift keying; semiconductor junction lasers; 7Rb D 2 line; AlGaAs; PSK modulated signal; Rb; error signal; frequency locking; optical waveguide phase modulator; semiconductor laser;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19911384
