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Conference Paper: Graphene optical modulator

TitleGraphene optical modulator
Authors
KeywordsBroadband
Optical modulator
Graphene
Issue Date2011
Citation
Proceedings of SPIE - The International Society for Optical Engineering, 2011, v. 8101 How to Cite?
AbstractData communications have been growing at a speed even faster than Moore's Law, with a 44-fold increase expected within the next 10 years. Data Transfer on such scale would have to recruit optical communication technology and inspire new designs of light sources, modulators, and photodetectors. An ideal optical modulator will require high modulation speed, small device footprint and large operating bandwidth. Silicon modulators based on free carrier plasma dispersion effect and compound semiconductors utilizing direct bandgap transition have seen rapid improvement over the past decade. One of the key limitations for using silicon as modulator material is its weak refractive index change, which limits the footprint of silicon Mach-Zehnder interferometer modulators to millimeters. Other approaches such as silicon microring modulators reduce the operation wavelength range to around 100 pm and are highly sensitive to typical fabrication tolerances and temperature fluctuations. Growing large, high quality wafers of compound semiconductors, and integrating them on silicon or other substrates is expensive, which also restricts their commercialization. In this work, we demonstrate that graphene can be used as the active media for electroabsorption modulators. By tuning the Fermi energy level of the graphene layer, we induced changes in the absorption coefficient of graphene at communication wavelength and achieve a modulation depth above 3 dB. This integrated device also has the potential of working at high speed. © 2011 SPIE.
Persistent Identifierhttp://hdl.handle.net/10722/257089
ISSN
2023 SCImago Journal Rankings: 0.152
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLiu, Ming-
dc.contributor.authorYin, Xiaobo-
dc.contributor.authorWang, Feng-
dc.contributor.authorZhang, Xiang-
dc.date.accessioned2018-07-24T08:58:48Z-
dc.date.available2018-07-24T08:58:48Z-
dc.date.issued2011-
dc.identifier.citationProceedings of SPIE - The International Society for Optical Engineering, 2011, v. 8101-
dc.identifier.issn0277-786X-
dc.identifier.urihttp://hdl.handle.net/10722/257089-
dc.description.abstractData communications have been growing at a speed even faster than Moore's Law, with a 44-fold increase expected within the next 10 years. Data Transfer on such scale would have to recruit optical communication technology and inspire new designs of light sources, modulators, and photodetectors. An ideal optical modulator will require high modulation speed, small device footprint and large operating bandwidth. Silicon modulators based on free carrier plasma dispersion effect and compound semiconductors utilizing direct bandgap transition have seen rapid improvement over the past decade. One of the key limitations for using silicon as modulator material is its weak refractive index change, which limits the footprint of silicon Mach-Zehnder interferometer modulators to millimeters. Other approaches such as silicon microring modulators reduce the operation wavelength range to around 100 pm and are highly sensitive to typical fabrication tolerances and temperature fluctuations. Growing large, high quality wafers of compound semiconductors, and integrating them on silicon or other substrates is expensive, which also restricts their commercialization. In this work, we demonstrate that graphene can be used as the active media for electroabsorption modulators. By tuning the Fermi energy level of the graphene layer, we induced changes in the absorption coefficient of graphene at communication wavelength and achieve a modulation depth above 3 dB. This integrated device also has the potential of working at high speed. © 2011 SPIE.-
dc.languageeng-
dc.relation.ispartofProceedings of SPIE - The International Society for Optical Engineering-
dc.subjectBroadband-
dc.subjectOptical modulator-
dc.subjectGraphene-
dc.titleGraphene optical modulator-
dc.typeConference_Paper-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1117/12.899662-
dc.identifier.scopuseid_2-s2.0-82955225318-
dc.identifier.volume8101-
dc.identifier.isiWOS:000295579600007-

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