Title :
Low distortion up to 2 GHz in 1.55 mu m multiquantum well distributed-feedback laser
Author :
Kito, Masanobu ; Ishino, Masanori ; Otsuka, N. ; Hoshino, Norihiro ; Fujihara, K. ; Fujito, F. ; Matsui, Yusuke
Author_Institution :
Semicond. Res. Centre, Matsushita Electr. Ind. Co. Ltd., Osaka, Japan
fDate :
4/23/1992 12:00:00 AM
Abstract :
The distortion characteristics of multiquantum well (MQW) distributed-feedback (DFB) lasers emitting at 1.55 mu m wavelength are investigated over a wide frequency range. The relaxation oscillation frequency fr of the MQW DFB laser is 13 GHz at Ib=77 mA, which is about 1.5 times larger than that of a DFB laser with a bulk active layer. Owing to the high relaxation oscillation frequency characteristics and the good linearity of the light-output against injection-current curve of the MQW DFB laser, extremely low distortion characteristics (IM2<-65 dBc) are achieved up to a high modulation frequency of 2 GHz.
Keywords :
distributed feedback lasers; laser transitions; optical modulation; semiconductor junction lasers; 1.55 micron; 13 GHz; 2 GHz; 77 mA; MQW DFB laser; distortion characteristics; distributed-feedback laser; modulation frequency; multiquantum well; relaxation oscillation frequency; semiconductor lasers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19920562
