All-optical photonic switches using integrated inverted asymmetric Fabry-Perot modulators and heterojunction phototransistors

Author

Hu, Kezhong ; Chen, Li ; Kaviani, Kian ; Chen, Ping ; Madhukar, Anupam

Author_Institution

Photonic Mater. & Dev. Lab., Univ. of Southern California, Los Angeles, CA, USA

Volume

4

Issue

3

fYear

1992

fDate

3/1/1992 12:00:00 AM

Firstpage

263

Lastpage

266

Abstract

InGaAs/GaAs(100) multiple-quantum-well-based inverted cavity asymmetric Fabry-Perot modulators are vertically integrated with GaAs/AlGaAs heterojunction phototransistors to yield all-optical photonic switches. The photonic switches using "normally on" modulator pixels exhibit an output on-off ratio of 12:1 with an internal optical gain of 4 dB. The photonic switches using "normally off" modulator pixels yield similar contrast and gain, but exhibit intrinsic bistable behavior. The inverted cavity modulators employed permit utilizing the transparency of the GaAs substrate at the operating wavelength and offer advantages for fabricating large arrays for optical signal processing.

Keywords

III-V semiconductors; aluminium compounds; gallium arsenide; heterojunction bipolar transistors; indium compounds; integrated optics; integrated optoelectronics; optical bistability; optical modulation; optical switches; phototransistors; 4 dB; GaAs substrate; GaAs-AlGaAs; GaAs/AlGaAs heterojunction phototransistors; HPT; III-V semiconductor; InGaAs-GaAs; MQW; all-optical photonic switches; contrast; heterojunction phototransistors; integrated inverted asymmetric Fabry-Perot modulators; internal optical gain; intrinsic bistable behavior; large arrays; optical signal processing; output on-off ratio; transparency; Fabry-Perot; Gallium arsenide; Heterojunctions; Indium gallium arsenide; Optical arrays; Optical modulation; Optical signal processing; Optical switches; Phototransistors; Quantum well devices;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.122387

Filename

122387