Title :
Miniature packaged external-cavity semiconductor laser with 50 GHz continuous electrical tuning range
Author :
Mellis, J. ; Al-Chalabi, S.A. ; Cameron, K.H. ; Wyatt, R. ; Regnault, J.C. ; Devlin, W.J. ; Brain, M.C.
Author_Institution :
British Telecom Res. Labs., Ipswich
fDate :
8/4/1988 12:00:00 AM
Abstract :
Miniature, packaged, grating-external-cavity lasers have been developed for use in PSK and DPSK coherent transmission systems at 1.5 μm. The outside dimensions of the package are 30×30×50 mm and the optical cavity length is nominally 30 mm, resulting in a spectral linewidth <100 kHz. The lasing wavelength is mechanically adjustable over the range 1510-1560 nm and electrically tunable over the range of 0.8 nm. With appropriate control of the grating piezos, a continuous (hop-free) tuning range of 50 GHz (0.4 nm) can be obtained
Keywords :
laser cavity resonators; optical communication equipment; semiconductor junction lasers; tuning; 1.5 micron; 30 to 50 mm; DPSK; PSK; coherent transmission systems; dimensions; electrically tunable; external-cavity semiconductor laser; grating-external-cavity lasers; lasing wavelength; mechanically adjustable; optical cavity length; spectral linewidth; tuning range;
Journal_Title :
Electronics Letters
