Title :
Corrugation-pitch-modulated phase-shifted DFB laser
Author :
Okai, M. ; Chinone, N. ; Taira, H. ; Harada, T.
Author_Institution :
Hitachi Ltd., Tokyo, Japan
Abstract :
A corrugation-pitch-modulated phase-shifted distributed feedback (DFB) laser is proposed to reduce the spatial-hole-burning effect along the laser cavity. The structure of the proposed corrugation-pitch-modulated phase-shifted DFB laser is illustrated. A reduction in this effect is confirmed from its spectral behavior as a function of driving current. Consequently, stable single-longitudinal-mode operation up to high-output powers is obtained.<>
Keywords :
distributed feedback lasers; laser cavity resonators; laser modes; optical hole burning; optical modulation; semiconductor junction lasers; corrugation-pitch-modulated phase-shifted distributed feedback laser; driving current; high-output powers; laser cavity; spatial-hole-burning effect; spectral behavior; stable single-longitudinal-mode operation; Communication systems; Current measurement; Distributed feedback devices; Gratings; Laser feedback; Laser modes; Laser stability; Laser theory; Light sources; Power lasers;
Journal_Title :
Photonics Technology Letters, IEEE
