Electrooptical modulation in multiple quantum well hetero nipi waveguides

C. Thirstrup, P. N. Robson, P. Li Kam Wa, M. A. Pate, C. C. Button, J. S. Roberts

Research output: Contribution to journalJournal articleResearchpeer-review

327 Downloads (Pure)

Abstract

An optical intensity modulator based on multiple quantum well hetero (MQW-H) nipi waveguides is reported. In the low optical power regime (~10-5 W), the modulator exhibits an extinction ratio in excess of 100:1 at low drive voltage (4 V) and 5-B attenuation. Modelling and experimental results of the time response of the waveguide modulator are presented, and it is shown that the response is limited by the RC time constant of the drive circuit and the photocurrent charging up a dielectric capacitance. The modelling shows that with a loss penalty of ~1.5 dB, the speed of the present waveguide modulator is limited solely by the RC time constant that would allow modulation speeds of ~100 ps
Original languageEnglish
JournalJournal of Lightwave Technology
Volume12
Issue number3
Pages (from-to)425-429
ISSN0733-8724
DOIs
Publication statusPublished - 1994

Bibliographical note

Copyright: 1994 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

Fingerprint Dive into the research topics of 'Electrooptical modulation in multiple quantum well hetero nipi waveguides'. Together they form a unique fingerprint.

Cite this