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

fYear

1993

fDate

5-8 Dec. 1993

Firstpage

613

Lastpage

616

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices Meeting, 1993. IEDM '93. Technical Digest., International

Conference_Location

Washington, DC, USA

ISSN

0163-1918

Print_ISBN

0-7803-1450-6

Type

conf

DOI

10.1109/IEDM.1993.347284

Filename

347284