Title :
Single-mode properties of distributed-reflector lasers
Author :
Komori, Kazuhiro ; Arai, Shigehisa ; Suematsu, Yasuharu ; Arima, Isao ; Aoki, Masahiro
Author_Institution :
Dept. of Phys. Electron., Tokyo Inst. of Technol., Japan
fDate :
6/1/1989 12:00:00 AM
Abstract :
The fundamental properties of a distributed-reflector (DR) laser, consisting of an active section and a passive distributed reflector section, are theoretically investigated. The DR laser, in principle, has the properties of high efficiency and high-power performance in dynamic-single-mode operation, thus eliminating the problems of low device efficiency in DFB (distributed-feedback) lasers and low output power in DBR (distributed Bragg reflector) lasers. The effective length of a DR including gain and loss, is introduced and is applied for the analytical determination of the lasing condition. The conditions required for dynamic-single-mode operation with one-facet output are given in terms of the propagation constant difference between the active and passive regions related to the coupling coefficient of the passive reflector. This condition is experimentally found to be attainable by utilizing a conventional fabrication process
Keywords :
laser modes; laser theory; semiconductor junction lasers; active section; coupling coefficient; distributed-reflector lasers; dynamic-single-mode operation; effective length; gain; high efficiency; high-power performance; lasing condition; loss; one-facet output; passive distributed reflector section; propagation constant difference; Distributed Bragg reflectors; Distributed feedback devices; Fabrication; Laser feedback; Laser modes; Laser theory; Laser tuning; Optical fiber communication; Power generation; Power lasers; Propagation constant;
Journal_Title :
Quantum Electronics, IEEE Journal of
