Enhanced wavelength tuning in grating-assisted codirectional coupler filter

Author

Chuang, Z.M. ; Coldren, L.A.

Author_Institution

Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA

Volume

5

Issue

10

fYear

1993

Firstpage

1219

Lastpage

1221

Abstract

Wavelength-tunable devices based on grating-assisted codirectional coupler filters have been shown to possess enhanced wavelength tunabilities and are promising for use in multiwavelength communication networks. It was found theoretically that the enhancement factor can be estimated by the mismatch of group velocities between the two coupled models. We have confirmed this prediction via measurements of wavelength tuning for both the coupler filter and the Fabry-Perot filter in reverse bias. These measurements are accomplished with photonic-integrated devices. An enhancement factor of approximately 11 is measured on our device, which agrees very well with the theory.<>

Keywords

diffraction gratings; directional couplers; integrated optics; optical communication equipment; optical couplers; optical filters; tuning; Fabry-Perot filter; coupled models; enhanced wavelength tunabilities; enhanced wavelength tuning; enhancement factor; grating-assisted codirectional coupler filter; group velocities; multiwavelength communication networks; photonic-integrated devices; reverse bias; wavelength-tunable devices; Distributed Bragg reflectors; Fabry-Perot; Gallium arsenide; Gratings; Laser tuning; Optical filters; Optical tuning; Tunable circuits and devices; Voltage; Wavelength measurement;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.248433

Filename

248433