Title :
Packaged frequency-stable tunable 20 kHz linewidth 1.5 μm InGaAsP external cavity laser
Author :
Matthews, M.R. ; Cameron, K.H. ; Wyatt, R. ; Devlin, W.J.
Author_Institution :
British Telecom Research Laboratories, Ipswich, UK
Abstract :
Packaged grating-tuned external cavity InGaAsP/InP lasers have been developed for use in coherent transmission systems that operate at a wavelength of 1.5 μm. The emission wavelength can be selected within a 60 nm range during manufacture, and can subsequently be tuned over 0.5 nm (63 GHz). The lasers have linewidths better than 20 kHz and show long-term relative frequency stability of better than 150 MHz.
Keywords :
III-V semiconductors; gallium arsenide; gallium compounds; indium compounds; laser frequency stability; laser tuning; optical communication equipment; semiconductor junction lasers; coherent transmission systems; emission wavelength; external cavity InGaAsP/InP lasers; frequency stability 150 MHz; linewidth 20 kHz; optical communication equipment; packaged grating tuned lasers; semiconductor laser; wavelength 1.5 microns;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19850079
