A new method for the calculation of the emission spectrum of DFB and DBR lasers

Author

Weber, Jean-Pierre ; Wang, Shyh

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA

Volume

27

Issue

10

fYear

1991

fDate

10/1/1991 12:00:00 AM

Firstpage

2256

Lastpage

2266

Abstract

A method based on transmission matrices that allows the emission spectra of arbitrarily complicated semiconductor laser structures to be computed below and above threshold has been developed. These can include active and passive periodic or uniform sections. As examples, the authors compute the emission spectra of a normal distributed feedback (DFB) laser, a DFB laser with a λ/4 phase shifter, and a surface-emitting distributed Bragg reflector (DFB) laser. To do that, Petermann´s method for calculating the spontaneous emission coupling coefficient has been extended to the case of a periodic waveguide. It is shown how the spontaneous emission, when treated correctly, can be used to measure the coupling coefficient of the grating in a DFB laser with a λ/4 phase shifter

Keywords

distributed Bragg reflector lasers; distributed feedback lasers; laser theory; semiconductor junction lasers; DBR lasers; DFB laser; Petermann´s method; active; diffraction gratings; distributed feedback; emission spectrum; grating; passive periodic; periodic waveguide; phase shifter; semiconductor laser structures; spontaneous emission coupling coefficient; surface-emitting distributed Bragg reflector; threshold; transmission matrices; uniform sections; Distributed computing; Distributed feedback devices; Laser feedback; Phase shifters; Semiconductor lasers; Spontaneous emission; Surface emitting lasers; Surface treatment; Transmission line matrix methods; Waveguide lasers;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.97269

Filename

97269