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Article: Interdiffusion induced modification of surface-acoustic-wave AlGaAs-GaAs quantum-well modulators

TitleInterdiffusion induced modification of surface-acoustic-wave AlGaAs-GaAs quantum-well modulators
Authors
KeywordsDiffused Quantum Well
Electroabsorption Modulation
Modification Of Quantum Well
Surface-Acoustic-Wave Modulator
Issue Date1998
Citation
Ieee Journal On Selected Topics In Quantum Electronics, 1998, v. 4 n. 4, p. 758-764 How to Cite?
AbstractA theoretical study of short period AlGaAs-GaAs diffused quantum-well (QW) absorption modulators operated by using surface acoustic waves (SAWs) is carried out in this paper. The as-grown QW structure is optimized and interdiffusion is used to fine tune the modulation performance. The results show that a stack of QW's can be developed at the top surface of the modulator to utilize the steep potential induced by SAW's. The optimized structure can also produce a large absorption change and thus a fast modulation speed for the same modulation depth. In comparison to previous results, the required surface acoustic wave has a longer wavelength and a lower power so that the fabrication of the interdigital transducer can be simplified. In addition, the use of interdiffusion can provide an useful fine adjustment to the operating wavelength, further enhancement of the modulation depth and an improvement in chirping with the only drawback of an increased absorption loss.
Persistent Identifierhttp://hdl.handle.net/10722/155074
ISSN
2015 Impact Factor: 3.466
2015 SCImago Journal Rankings: 1.632
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChoy, WCHen_US
dc.contributor.authorWeiss, BLen_US
dc.date.accessioned2012-08-08T08:31:45Z-
dc.date.available2012-08-08T08:31:45Z-
dc.date.issued1998en_US
dc.identifier.citationIeee Journal On Selected Topics In Quantum Electronics, 1998, v. 4 n. 4, p. 758-764en_US
dc.identifier.issn1077-260Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/155074-
dc.description.abstractA theoretical study of short period AlGaAs-GaAs diffused quantum-well (QW) absorption modulators operated by using surface acoustic waves (SAWs) is carried out in this paper. The as-grown QW structure is optimized and interdiffusion is used to fine tune the modulation performance. The results show that a stack of QW's can be developed at the top surface of the modulator to utilize the steep potential induced by SAW's. The optimized structure can also produce a large absorption change and thus a fast modulation speed for the same modulation depth. In comparison to previous results, the required surface acoustic wave has a longer wavelength and a lower power so that the fabrication of the interdigital transducer can be simplified. In addition, the use of interdiffusion can provide an useful fine adjustment to the operating wavelength, further enhancement of the modulation depth and an improvement in chirping with the only drawback of an increased absorption loss.en_US
dc.languageengen_US
dc.relation.ispartofIEEE Journal on Selected Topics in Quantum Electronicsen_US
dc.subjectDiffused Quantum Wellen_US
dc.subjectElectroabsorption Modulationen_US
dc.subjectModification Of Quantum Wellen_US
dc.subjectSurface-Acoustic-Wave Modulatoren_US
dc.titleInterdiffusion induced modification of surface-acoustic-wave AlGaAs-GaAs quantum-well modulatorsen_US
dc.typeArticleen_US
dc.identifier.emailChoy, WCH:chchoy@eee.hku.hken_US
dc.identifier.authorityChoy, WCH=rp00218en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1109/2944.720489en_US
dc.identifier.scopuseid_2-s2.0-0032117459en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0032117459&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume4en_US
dc.identifier.issue4en_US
dc.identifier.spage758en_US
dc.identifier.epage764en_US
dc.identifier.isiWOS:000076177400023-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridChoy, WCH=7006202371en_US
dc.identifier.scopusauthoridWeiss, BL=7402309717en_US

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