Design of widely tunable semiconductor lasers using grating-assisted codirectional-coupler filters

Author

Chuang, Zuon-Min ; Coldren, Larry A.

Author_Institution

Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA

Volume

29

Issue

4

fYear

1993

fDate

4/1/1993 12:00:00 AM

Firstpage

1071

Lastpage

1080

Abstract

The analysis and design of widely tunable semiconductor lasers using grating-assisted codirectional-coupler filtering in a vertical twin-guide structure are considered. An orthogonal coupled mode formalism is applied to obtain the important design parameters for the filter. It is shown that there is a tradeoff between tuning range and spectral purity when using this type of filter as an intracavity mode selector. Practical laser structures are presented, and design considerations and limitations are discussed for GaAs and InP material systems with lasing wavelengths around 0.98 and 1.55 μm, respectively

Keywords

diffraction gratings; laser accessories; optical couplers; optical filters; semiconductor lasers; 0.98 micron; 1.55 micron; GaAs; InP material systems; analysis; design; grating-assisted codirectional-coupler filters; intracavity mode selector; lasing wavelengths; orthogonal coupled mode formalism; spectral purity; tuning range; vertical twin-guide structure; widely tunable semiconductor lasers; Filtering; Filters; Gallium arsenide; Gratings; Indium phosphide; Laser modes; Laser tuning; Optical design; Semiconductor lasers; Tunable circuits and devices;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.214492

Filename

214492