A wavelength-tunable curved waveguide DFB laser with an integrated modulator

Author

Hsu, Alan ; Chuang, Shun-Lien ; Fang, W. ; Adams, L. ; Nykolak, G. ; Tanbun-Ek, T.

Author_Institution

Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA

Volume

35

Issue

6

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

961

Lastpage

969

Abstract

A distributed-feedback (DFB) laser with a curved waveguide in the active region integrated with an electroabsorption modulator is studied experimentally and theoretically. The modulator controls the lasing wavelength of the DFB laser by acting as an optical phase shifter. Our model, which is based on the transfer matrix method, is used to simulate this multisection device with the curved waveguide, self-consistently including the effects of spatial hole burning (SHB). The model explains the features and wavelength-tuning behavior of the spectrum and shows good agreement with experimentally measured spectra. We also show theoretically that the curved waveguide suppresses the longitudinal photon density profile of the device compared with a straight waveguide case, which implies reduced SHB effects

Keywords

distributed feedback lasers; electro-optical modulation; laser tuning; optical hole burning; semiconductor device models; semiconductor lasers; waveguide lasers; IOE; active region; electroabsorption modulator; experimentally measured spectra; integrated modulator; longitudinal photon density profile; multisection device; optical phase shifter; reduced SHB effects; spatial hole burning; transfer matrix method; wavelength-tunable curved waveguide DFB laser; wavelength-tuning behavior; Laser modes; Laser theory; Optical control; Optical modulation; Optical waveguide theory; Optical waveguides; Phase modulation; Phase shifters; Waveguide lasers; Waveguide theory;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.766840

Filename

766840