Title :
250 kHz spectral linewidth operation of 1.5 mu m multiple quantum well DFB-LDs
Author :
Kitamura, Mitshuhiro ; Yamazaki, Hiroyuki ; Sasaki, Tatsuya ; Kida, Nobuo ; Hasumi, Hideyo ; Mito, Ikuo
Author_Institution :
NEC Corp., Kamasaki, Japan
fDate :
5/1/1990 12:00:00 AM
Abstract :
The spectral linewidth observed in a 1.5 mu m multiple-quantum-well distributed-feedback laser diode (MQW-DFB-LD) with 1500 mu m cavity length is discussed. The spectral linewidth was drastically reduced in long-cavity MQW-DFB0-LDs through a reduction in threshold carrier density. A spectral linewidth of 250 kHz, the narrowest ever achieved, was obtained.<>
Keywords :
carrier density; distributed feedback lasers; laser cavity resonators; semiconductor junction lasers; semiconductor quantum wells; 1.5 micron; 1500 micron; 250 kHz; cavity length; distributed-feedback laser diode; multiple quantum well DFB-LDs; spectral linewidth operation; threshold carrier density; Charge carrier density; Diode lasers; Distributed feedback devices; Gratings; Laser feedback; Optical films; Optical mixing; Power generation; Quantum well devices; Threshold current;
Journal_Title :
Photonics Technology Letters, IEEE
