A unified Green´s function analysis of complicated DFB lasers

Author

Freeze, Jim D. ; Jensen, Michael A. ; Selfridge, Richard H.

Author_Institution

Dept. of Electr. & Comput. Eng., Brigham Young Univ., Provo, UT, USA

Volume

33

Issue

8

fYear

1997

fDate

8/1/1997 12:00:00 AM

Firstpage

1253

Lastpage

1259

Abstract

An efficient full-wave analysis technique for one-dimensional optical domains, known as the recursive Green´s function method (RGFM), is presented for evaluation of distributed feedback (DFB) laser cavities with arbitrary material profiles. The method first constructs the Green´s function of an inhomogeneous domain and subsequently uses Green´s theorem to determine the laser optical field, lasing wavelength, and threshold gain. The technique is applied to investigate the performance of three DFB laser structures: a chirped-grating configuration, a modulated stripe width design, and a reduced duty cycle complex-coupled device. These structures are evaluated in terms of their single-mode lasing behavior and the uniformity of the optical field within the cavity

Keywords

Green´s function methods; chirp modulation; diffraction gratings; distributed feedback lasers; laser cavity resonators; laser modes; laser theory; recursion method; semiconductor device models; semiconductor lasers; DFB laser cavities; DFB laser structures; Green´s theorem; arbitrary material profiles; cavity optical field uniformity; chirped-grating configuration; complicated DFB lasers; distributed feedback laser cavities; efficient full-wave analysis technique; inhomogeneous domain; laser optical field; lasing wavelength; modulated stripe width design; one-dimensional optical domains; recursive Green´s function method; reduced duty cycle complex-coupled device; single-mode lasing behavior; threshold gain; unified Green´s function analysis; Chirp; Distributed feedback devices; Fiber lasers; Green´s function methods; Laser feedback; Laser modes; Laser theory; Optical feedback; Optical materials; Semiconductor lasers;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.605544

Filename

605544