Enhanced dynamics of QWS-DFB lasers by longitudinal variation of their coupling coefficient

Author

Fessant, Thierry

Author_Institution

Lab. RESO, Ecole Nat. d´´Ingenieurs de Brest, Brest, France

Volume

9

Issue

8

fYear

1997

Firstpage

1075

Lastpage

1077

Abstract

Time-domain simulations performed on quarter-wave-shifted (QWS) distributed-feedback (DFB) lasers show that large-signal dynamics of such structures can be greatly enhanced by adequate longitudinal variation of their coupling coefficient K. Indeed, mode instabilities induced by spatial hole burning (SHE) can be less disastrous on the performance of distributed-coupling-coefficient QWS-DFB (QWS-DCC-DFB) lasers with respect to their conventional QWS-DFB (uniform coupling profile) counterparts.

Keywords

coupled mode analysis; distributed feedback lasers; laser beams; laser feedback; laser modes; laser stability; optical couplers; optical hole burning; optical modulation; semiconductor lasers; coupling coefficient; distributed-coupling-coefficient; distributed-feedback lasers; enhanced dynamics; large-signal dynamics; longitudinal variation; mode instabilities; quarter-wave-shifted distributed-feedback laser; spatial hole burning; time-domain simulations; uniform coupling profile; Equations; Gratings; Laser modes; Laser stability; Optical coupling; Optical device fabrication; Optical fiber communication; Optical modulation; Semiconductor lasers; Time domain analysis;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.605505

Filename

605505