Title :
Extremely narrow spectral linewidth and low chirping of the MQW-DFB-PPIBH laser diode
Author :
Kakimoto, Syoichi ; Nakajima, Yasuo ; Sakakibara, Y. ; Watanabe, H. ; Takemoto, Akira ; Yoshida, Naohito
Author_Institution :
Mitsubishi Electr. Corp., Hyogo, Japan
fDate :
9/1/1990 12:00:00 AM
Abstract :
The low threshold current of 9 mA, the high side-mode suppression ratio of more than 45 dB, the extremely narrow spectral linewidth of 1.1 MHz, and the low chirping of 2.8 Å at -20 dB at 2 Gb/s nonreturn to zero (NRZ) modulation have been achieved in the multiple quantum well (MQW) distributed feedback (DFB) p-substrate partially inverted buried heterostructure (PPIBH) laser diode. The spectral linewidth of 1.1 MHz is the narrowest value among 300-μm-length solitary laser diodes. These results suggest that the MQW-DFB laser diodes are a promising light source for longer distance and higher bit-rate optical communication systems and coherent optical communication systems
Keywords :
distributed feedback lasers; laser modes; optical communication equipment; semiconductor junction lasers; spectral line breadth; 300 micron; 9 mA; MQW-DFB-PPIBH laser diode; coherent optical communication; distributed feedback; high side-mode suppression ratio; higher bit-rate optical communication systems; light source; long distance optical communication; low chirping; low threshold current; multiple quantum well; narrow spectral linewidth; nonreturn-to-zero modulation; p-substrate partially inverted buried heterostructure; Chirp modulation; Diode lasers; Distributed feedback devices; High speed optical techniques; Optical feedback; Optical modulation; Optical signal processing; Quantum well devices; Quantum well lasers; Threshold current;
Journal_Title :
Quantum Electronics, IEEE Journal of
