Title :
Spectral behaviour of aged 1.55 ¿m ¿/4-shifted DFB lasers
Author :
Akiba, Shigeyuki ; Matsushima, Y. ; Usami, M. ; Utaka, K.
Author_Institution :
KDD Research & Development Laboratories, Tokyo, Japan
Abstract :
Side-mode suppression ratio and main-mode wavelength were measured in the 3000 h life test of 1.55 ¿m ¿/4-shifted InGaAsP/InP DFB lasers. Degradation of the single-wavelength property and the wavelength shift of the main mode were observed in lasers which showed relatively large degradation rates of about 10¿4/h at 50°C.
Keywords :
III-V semiconductors; distributed feedback lasers; gallium arsenide; indium compounds; laser frequency stability; semiconductor junction lasers; 1.55 micron; 300 h life test; 3000 h; 50 C; InGaAsP-InP lasers; aged lasers; degradation rates; main-mode wavelength; quarter-wave shifted DFB lasers; semiconductors; side mode suppression ratio; single-wavelength property; spectral behaviour; stability; wavelength shift;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870235
