Title :
Dependence of spectral linewidth on cavity length and coupling coefficient in DFB laser
Author :
Ogita, Shoichi ; Kotaki, Y. ; Kihara, K. ; Matsuda, Manabu ; Ishikawa, Hiroshi ; Imai, H.
Author_Institution :
Fujitsu Labs., Kanagawa
fDate :
5/12/1988 12:00:00 AM
Abstract :
The dependence of the spectral linewidth of DFB lasers on cavity length and coupling coefficient has been investigated. It was shown experimentally that the long cavity was very effective at reducing the spectral linewidth of DFB lasers, whereas a large coupling coefficient was ineffective. With a corrugation depth of 15 nm and a cavity length of 1200 μm, a narrow linewidth of 1.7 MHz was obtained at 11 mW
Keywords :
III-V semiconductors; distributed feedback lasers; gallium arsenide; gallium compounds; indium compounds; semiconductor junction lasers; spectral line breadth; 11 mW; 1200 micron; 15 nm; DFB laser; GaInAsP-InP; cavity length; corrugation depth; coupling coefficient; semiconductor laser; spectral linewidth;
Journal_Title :
Electronics Letters
