High-speed MQW electroabsorption optical modulators integrated with low-loss waveguides

Author

Ido, T. ; Sano, H. ; Suzuki, M. ; Tanaka, S. ; Inoue, H.

Author_Institution

Central Res. Lab., Hitachi Ltd., Tokyo, Japan

Volume

7

Issue

2

fYear

1995

Firstpage

170

Lastpage

172

Abstract

An MQW electro-absorption optical modulator integrated with low-loss input and output waveguides is proposed to achieve larger modulation bandwidth with a shorter modulation region, keeping the total device length large enough for easy fabrication and packaging. A fabricated 1-mm-long modulator with a modulation-region length of 50 μm shows a low insertion loss (7 dB), low driving voltage (V/sub 10/ /sub dB/=2.6 V), and large modulation bandwidth f/sub 3 dB/=40 (GHz) extrapolated from measurements up to 20 GHz. This modulator is suitable for application to ultra-high-speed fiber transmission systems.

Keywords

electro-optical modulation; electroabsorption; optical fabrication; optical fibre communication; optical losses; optical planar waveguides; packaging; semiconductor quantum wells; 1 mm; 2.6 V; 20 GHz; 40 GHz; 50 mum; 7 dB; easy fabrication; high-speed MQW electroabsorption optical modulators; large modulation bandwidth; larger modulation bandwidth; low driving voltage; low insertion loss; low-loss input waveguides; low-loss waveguides; modulation-region length; output waveguides; packaging; shorter modulation region; total device length; ultra-high-speed fiber transmission systems; Bandwidth; High speed optical techniques; Integrated optics; Optical device fabrication; Optical devices; Optical losses; Optical modulation; Optical waveguides; Packaging; Quantum well devices;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.345912

Filename

345912