Title :
Frequency stabilisation of semiconductor lasers for heterodyne-type optical communication systems
Author :
Okoshi, Tadashi ; Kikuchi, Kazuro
Author_Institution :
University of Tokyo, Department of Electronic Engineering, Tokyo, Japan
Abstract :
In the somewhat distant future, heterodyne-type optical communications will appear, increasing channel capacity and repeater separation. At present, the greatest difficulty is the frequency drift of lasers. The letter describes an a.f.c. (automatic frequency control) experiment using a Peltier cooling element; it is shown that the frequency fluctuation can be reduced to below 10 MHz.
Keywords :
automatic frequency control; laser frequency stability; optical communication equipment; semiconductor junction lasers; Peltier cooling element; automatic frequency control; channel capacity; frequency drift; heterodyne optical communication systems; laser frequency stability; repeater separation; semiconductor function lasers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19800129
