The distributed feedback waveguide modulator

Author

Gomatam, Badri N.

Author_Institution

Dept. of Electr. & Comput. Eng., Massachusetts Univ., Amherst, MA, USA

Volume

4

Issue

11

fYear

1992

Firstpage

1227

Lastpage

1230

Abstract

A novel waveguide electroabsorption modulator structure is proposed. In this structure, the resonator properties of a quarter-wave phase-shifted grating are combined with the electroabsorption properties of a multiple-quantum-well (MQW) waveguide. The theory and design considerations for such a distributed feedback MQW modulator are discussed. The performance characteristics of this structure are studied theoretically and compared with conventional MQW waveguide modulators. It is found that increased modulation bandwidth and reasonable optical bandwidths can be obtained over a device without feedback, and design tradeoffs are identified and explored.<>

Keywords

diffraction gratings; electro-optical devices; electroabsorption; feedback; integrated optics; optical modulation; optical resonators; optical waveguides; MQW waveguide modulators; distributed feedback MQW modulator; distributed feedback waveguide modulator; increased modulation bandwidth; modulator design; optical bandwidths; performance characteristics; quarter-wave phase-shifted grating; resonator properties; waveguide electroabsorption modulator structure; Bandwidth; Distributed feedback devices; Gratings; Optical devices; Optical feedback; Optical modulation; Optical resonators; Optical waveguide theory; Optical waveguides; Quantum well devices;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.166951

Filename

166951