Tuning range and spectral selectivity of the distributed forward coupled (DFC) laser

Author

Amann, M.-C. ; Borchert, B. ; Illek, S. ; Wolf, T.

Author_Institution

Siemens AG, Munich, Germany

Volume

5

Issue

8

fYear

1993

Firstpage

886

Lastpage

888

Abstract

The tuning performance and spectral filtering mechanism in the distributed forward-coupled (DFC) laser diode are investigated. This widely tunable device is based on codirectional mode coupling along the entire laser length by a gain/loss grating perturbation. Due to the transverse integration, even rather short (L approximately=300-600 mu m) DFC lasers may achieve side-mode suppression superior to that of previous codirectionally coupled devices over similar tuning ranges. Model calculations yield a tuning range above 100 nm at 1.5- mu m wavelength with a side-mode suppression ratio around 30 dB.<>

Keywords

diffraction gratings; laser accessories; laser modes; laser tuning; optical filters; semiconductor lasers; 1.5 micron; 30 dB; codirectional mode coupling; gain/loss grating perturbation; side-mode suppression; spectral filtering mechanism; spectral selectivity; transverse integration; tuning performance; Digital-to-frequency converters; Diode lasers; Filtering; Gratings; Laser modes; Laser tuning; Optical coupling; Optical tuning; Tunable circuits and devices; Wavelength measurement;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.238243

Filename

238243