Analysis of oscillation characteristics of separated-electrode DFB laser diodes

Author

Kikuchi, Kazuro ; Tomofuji, Hiroaki

Author_Institution

Dept. of Electron. Eng., Tokyo Univ., Japan

Volume

26

Issue

10

fYear

1990

fDate

10/1/1990 12:00:00 AM

Firstpage

1717

Lastpage

1727

Abstract

The oscillation characteristics of separated-electrode distributed feedback (DFB) lasers are analyzed by a numerical approach. In the calculation, coupled-mode equations are used including the carrier-density nonuniformity along the laser axis, which is introduced by the spatial hole burning and/or the nonuniform current injection. When the center section of a DFB laser, with three equally separated electrodes, is more strongly pumped than the side sections, high performance is achieved: the mode stability is maintained in the high-power state, resulting in a narrow linewidth. This is because the spatial hole burning is compensated by the larger current injection into the center region. The wide tunable range is also obtained under this bias condition

Keywords

compensation; distributed feedback lasers; electrodes; laser modes; laser theory; laser tuning; optical hole burning; oscillations; semiconductor junction lasers; spectral line breadth; bias condition; carrier-density nonuniformity; center section; coupled-mode equations; distributed feedback; high-power state; laser axis; laser pumping; mode stability; narrow linewidth; nonuniform current injection; oscillation characteristics; separated-electrode DFB laser diodes; side sections; spatial hole burning; wide tunable range; Distributed feedback devices; Electrodes; Equations; Laser excitation; Laser feedback; Laser modes; Laser stability; Optical coupling; Pump lasers; Tunable circuits and devices;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.60896

Filename

60896