Theory for optimum design and analysis of distributed-feedback lasers

Author

Wang, Jing-Yi ; Cada, Michael ; Sun, Jin

Author_Institution

Dept. of Electr. & Comput. Eng., Dalhousie Univ., Halifax, NS, Canada

Volume

11

Issue

1

fYear

1999

Firstpage

24

Lastpage

26

Abstract

Theory for optimum design of a distributed-feedback (DFB) laser is presented, based on a new set of coupled-power equations. A novel /spl lambda//4 phase shift index-coupled AR-coated DFB laser structure, which theoretically exhibits a longitudinally uniform power density, is proposed. It is shown that the theory is very simple and provides an easy way to analytically understand the physical mechanism crucial for the optimum design. Our theory can also be easily applied to the optimization of the design of gain-coupled, complex-coupled DFB laser structures as well as high power DFB lasers.

Keywords

antireflection coatings; distributed feedback lasers; laser theory; optical design techniques; optical films; optimisation; semiconductor device models; semiconductor lasers; /spl lambda//4 phase shift; DFB laser design; coupled-power equations; distributed-feedback lasers; gain-coupled complex-coupled DFB laser structures; high power DFB lasers; index-coupled AR-coated DFB laser structure; longitudinally uniform power density; optimization; optimum design; physical mechanism; Charge carrier density; Difference equations; Laser modes; Laser theory; Nonlinear equations; Optical coupling; Optical design; Power lasers; Semiconductor lasers; Sun;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.736378

Filename

736378