File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Conference Paper: Double quantum well phase modulators using surface acoustic waves

TitleDouble quantum well phase modulators using surface acoustic waves
Authors
KeywordsDouble quantum well
Electro-optical modulation
Surface acoustic wave modulator
Acousto-optic device
Piezoelectric effect of surface acoustic wave
Issue Date1999
PublisherSPIE - International Society for Optical Engineering. The Journal's web site is located at http://www.spie.org/app/Publications/index.cfm?fuseaction=proceedings
Citation
Integrated Optics Devices III, San Jose, CA., 25-27 January 1999. In Proceedings of SPIE, 1999, v. 3620, p. 45-56 How to Cite?
AbstractElectro-optic modulators using the interaction of surface acoustic waves (SAWs) with III-V semiconductor multiple quantum well structures have gained interests. A SAW induces potential field which provides the phase modulation. In order to improve the phase modulation, an AlGaAs/GaAs asymmetric double quantum well (DQW) optical phase modulator using SAWs is investigated theoretically. The optimization steps of the DQW structure are discussed. The optimized phase modulator structure is found to contain a five-period DQW active region. Analysis of the modulation characteristics show that by using the asymmetric DQW, the large change of the induced potential at the surface and thus large modification of the QW structure can be utilized. The modification of each QW structure is consistent, although this consistency is not always preserved in typical SAW devices. Consequently, the change of refractive index in each of the five DQWs is almost identical. Besides, the change of effective refractive index is 10 times larger here in comparison to a modulator with a five periods single QW as the active region and thus produces a larger phase modulation. In addition, a long wavelength and a low SAW power required here increase the size of the SAW transducer and simplify its fabrication.
Persistent Identifierhttp://hdl.handle.net/10722/46132
ISSN
2023 SCImago Journal Rankings: 0.152

 

DC FieldValueLanguage
dc.contributor.authorChoy, WCHen_HK
dc.contributor.authorLi, EHen_HK
dc.contributor.authorWeiss, BLen_HK
dc.date.accessioned2007-10-30T06:43:11Z-
dc.date.available2007-10-30T06:43:11Z-
dc.date.issued1999en_HK
dc.identifier.citationIntegrated Optics Devices III, San Jose, CA., 25-27 January 1999. In Proceedings of SPIE, 1999, v. 3620, p. 45-56en_HK
dc.identifier.issn0277-786Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/46132-
dc.description.abstractElectro-optic modulators using the interaction of surface acoustic waves (SAWs) with III-V semiconductor multiple quantum well structures have gained interests. A SAW induces potential field which provides the phase modulation. In order to improve the phase modulation, an AlGaAs/GaAs asymmetric double quantum well (DQW) optical phase modulator using SAWs is investigated theoretically. The optimization steps of the DQW structure are discussed. The optimized phase modulator structure is found to contain a five-period DQW active region. Analysis of the modulation characteristics show that by using the asymmetric DQW, the large change of the induced potential at the surface and thus large modification of the QW structure can be utilized. The modification of each QW structure is consistent, although this consistency is not always preserved in typical SAW devices. Consequently, the change of refractive index in each of the five DQWs is almost identical. Besides, the change of effective refractive index is 10 times larger here in comparison to a modulator with a five periods single QW as the active region and thus produces a larger phase modulation. In addition, a long wavelength and a low SAW power required here increase the size of the SAW transducer and simplify its fabrication.en_HK
dc.languageengen_HK
dc.publisherSPIE - International Society for Optical Engineering. The Journal's web site is located at http://www.spie.org/app/Publications/index.cfm?fuseaction=proceedingsen_HK
dc.relation.ispartofProceedings of SPIE-
dc.rightsCopyright 1999 Society of Photo‑Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, and modification of the contents of the publication are prohibited. This article is available online at https://doi.org/10.1117/12.343756-
dc.subjectDouble quantum wellen_HK
dc.subjectElectro-optical modulationen_HK
dc.subjectSurface acoustic wave modulatoren_HK
dc.subjectAcousto-optic deviceen_HK
dc.subjectPiezoelectric effect of surface acoustic waveen_HK
dc.titleDouble quantum well phase modulators using surface acoustic wavesen_HK
dc.typeConference_Paperen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1117/12.343756en_HK
dc.identifier.scopuseid_2-s2.0-0032635717-
dc.identifier.hkuros45476-
dc.identifier.volume3620-
dc.identifier.spage45-
dc.identifier.epage56-
dc.identifier.issnl0277-786X-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats