Corrugation-pitch-modulated MQW-DFB laser with narrow spectral linewidth (170 kHz)

Author

Okai, M. ; Tsuchiya, T. ; Uomi, K. ; Chinone, N. ; Harada, T.

Author_Institution

Hitachi Ltd., Tokyo, Japan

Volume

2

Issue

8

fYear

1990

Firstpage

529

Lastpage

530

Abstract

A spectral linewidth of 170 kHz was achieved at a 1.5- mu m wavelength in a 1200- mu m long corrugation-pitch-modulated (CPM) distributed feedback (DFB) laser having multiple quantum wells (MQW). This is the narrowest linewidth ever reported for InGaAsP DFB lasers. The CPM structure is effective in maintaining the single longitudinal mode at a high output power by suppressing the spatial hole burning effect. The linewidth-power product is 400 kHz-mW, and the extrapolated residual spectral linewidth is 150 kHz.<>

Keywords

III-V semiconductors; distributed feedback lasers; gallium arsenide; indium compounds; laser modes; semiconductor junction lasers; spectral line breadth; 1.5 micron; 1200 micron; InGaAsP; MQW-DFB laser; corrugation-pitch-modulated; distributed feedback; high output power; linewidth-power product; multiple quantum wells; narrow spectral linewidth; residual spectral linewidth; single longitudinal mode; spatial hole burning effect; suppressed spatial hole burning; Distributed feedback devices; Gratings; Indium gallium arsenide; Laser feedback; Laser modes; Power generation; Power lasers; Quantum well devices; Quantum well lasers; Reflectivity;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.58038

Filename

58038