Title :
Lasing wavelength changes due to degradation in buried heterostructure distributed Bragg reflector lasers
Author :
Mawatari, Hiroyasu ; Fukuda, Mitsuo ; Kano, Fumiyoshi ; Tohmori, Yuichi ; Yoshikuni, Yuzo ; Toba, Hiromu
Author_Institution :
NTT Opto-Electron. Labs., Kanagawa, Japan
fDate :
5/1/1999 12:00:00 AM
Abstract :
Changes in the wavelength and lamp characteristics due to the degradation of distributed Bragg reflector (DBR) lasers are investigated and the lasers are confirmed to be reliable enough for application as the light sources in WDM systems. The change in wavelength characteristics is due to degradation of the DBR or phase control region and the change in lamp characteristics is due to the degradation of active region. These changes in the characteristics are caused by diminished recombination carrier lifetime. The wavelength stability is strongly correlated with the injected current density. The lamp characteristics is confirmed to be almost as stable as in conventional Fabry-Perot lasers. The applicability of DBR lasers as the light source for wavelength division multiplexing (WDM) systems is demonstrated for actual-use conditions
Keywords :
ageing; carrier lifetime; current density; distributed Bragg reflector lasers; laser stability; life testing; optical testing; optical transmitters; quantum well lasers; semiconductor device testing; wavelength division multiplexing; DBR laser; Fabry-Perot lasers; WDM systems; active region; buried heterostructure distributed Bragg reflector laser degradation; diminished recombination carrier lifetime; injected current density; lamp characteristics; lasing wavelength changes; light sources; phase control region; wavelength characteristics; wavelength stability; Charge carrier lifetime; Current density; Degradation; Distributed Bragg reflectors; Lamps; Laser transitions; Light sources; Phase control; Stability; Wavelength division multiplexing;
Journal_Title :
Lightwave Technology, Journal of
