Title :
Narrow-spectral-linewidth, high-output-power operation, and FM response characteristics in 1.5 μm butt-jointed DBR lasers
Author :
Kunii, T. ; Ogawa, Y. ; Wada, H. ; Nonaka, T. ; Kawai, Yoshio
Author_Institution :
Oki Electr. Ind. Co. Ltd., Tokyo, Japan
fDate :
6/1/1991 12:00:00 AM
Abstract :
High performances for 1.5 μm butt-jointed distributed Bragg reflector (DBR) laser are demonstrated. High output power (>20 mW) and narrow spectral linewidth (600 kHz) were obtained. By controlling the device parameters, the linewidth was reduced, and a minimum linewidth of 450 kHz was observed. The limiting factors of the linewidth reduction are discussed. Frequency modulation (FM) response characteristics were investigated for two-active-action DBR lasers. It is shown that the sectional active layer is effective in obtaining the same FM response under wavelength tuning conditions
Keywords :
distributed Bragg reflector lasers; laser transitions; laser tuning; optical modulation; spectral line breadth; 1.5 micron; 20 mW; butt jointed distributed Bragg reflector lasers; device parameters; frequency modulation response characteristics; high-output-power operation; limiting factors; linewidth reduction; narrow spectral linewidth; performances; sectional active layer; wavelength tuning conditions; Distributed Bragg reflectors; Distributed feedback devices; Laser feedback; Laser noise; Laser tuning; Optical device fabrication; Optical distortion; Optical fiber communication; Power generation; Power lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
