Title :
1.3 /spl mu/m strained-layer MQW-DFB laser with low noise and low distortion characteristics for 100-channel CATV transmission
Author :
Ishino, M. ; Kito, M. ; Yamane, S. ; Fujihara, K. ; Otsuka, N. ; Sat, H. ; Matsui, Y.
Author_Institution :
Semicond. Res. Center, Matsushita Electr. Ind. Co. Ltd., Osaka, Japan
Abstract :
1.3 /spl mu/m strained-layer MQW-DFB lasers with large differential gain have been successfully fabricated. The lasers exhibit low distortion and low noise characteristics over wide frequency range even under low bias-current level. These characteristics result from largely improved dependence of relaxation oscillation frequency (f/sub r/) on injection current, due to strain effects. By using the laser as a signal source in CATV systems, high quality AM-FDM transmissions with largest recorded channel capacity (100 ch) have been demonstrated under an extremely low bias-current of 17 mA above threshold current.<>
Keywords :
amplitude modulation; community antenna television; distributed feedback lasers; frequency division multiplexing; optical communication equipment; semiconductor device noise; semiconductor lasers; 1.3 micron; AM-FDM transmissions; CATV transmission; bias-current level; channel capacity; differential gain; distortion characteristics; injection current; noise characteristics; relaxation oscillation frequency; signal source; strained-layer MQW-DFB laser; Epitaxial growth; Fiber lasers; Frequency; Gratings; Laser modes; Laser noise; Optical distortion; Optical films; Quantum well devices; Substrates;
Conference_Titel :
Electron Devices Meeting, 1993. IEDM '93. Technical Digest., International
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-1450-6
DOI :
10.1109/IEDM.1993.347284
