Title :
Factors limiting the spectral linewidth of CPM-MQW-DFB lasers
Author :
Okai, M. ; Tsuchiya, T. ; Takai, A. ; Chinone, N.
Author_Institution :
Hitachi Ltd., Tokyo, Japan
fDate :
6/1/1992 12:00:00 AM
Abstract :
A spectral linewidth of 56 kHz is achieved by a CPM-MQW-DFB (corrugation-pitch-modulated multiquantum-well distributed feedback) laser at an output power of 25 mW. To separate effects of the white noise and 1/f noise in limiting the linewidth, the authors measured the delayed-heterodyne lineshape by using a short delay-fiber. The minimum spectral linewidth is shown to be limited by white noise.<>
Keywords :
demodulation; distributed feedback lasers; electron device noise; optical modulation; semiconductor junction lasers; spectral line breadth; white noise; 1/f noise; 25 mW; CPM-MQW-DFB lasers; corrugation-pitch-modulated; delayed-heterodyne lineshape; distributed feedback; multiquantum-well; output power; semiconductor laser diodes; short delay-fiber; spectral linewidth; white noise; Distributed feedback devices; Frequency; Laser feedback; Laser noise; Optical control; Power generation; Power lasers; Quantum well devices; Semiconductor device noise; White noise;
Journal_Title :
Photonics Technology Letters, IEEE
