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dc.contributor.authorFaneca, J
dc.contributor.authorHogan, BT
dc.contributor.authorDiez, IR
dc.contributor.authorGardes, FY
dc.contributor.authorBaldycheva, A
dc.date.accessioned2019-11-20T16:54:05Z
dc.date.issued2019-11-15
dc.description.abstractWe demonstrate the potential of a graphene capacitor structure on silicon-richnitride micro-ring resonators for multitasking operations within high performance computing.Capacitor structures formed by two graphene sheets separated by a 10 nm insulating siliconnitride layer are considered. Hybrid integrated photonic structures are then designed to exploitthe electro-absorptive operation of the graphene capacitor to tuneably control the transmissionand attenuation of different wavelengths of light. By tuning the capacitor length, a shift in theresonant wavelength is produced giving rise to a broadband multilevel photonic volatile memory.The advantages of using silicon-rich nitride as the waveguiding material in place of the moreconventional silicon nitride (Si3N4) are shown, with a doubling of the device’s operationalbandwidth from 31.2 to 62.41 GHz achieved while also allowing a smaller device footprint.A systematic evaluation of the device’s performance and energy consumption is presented.A difference in the extinction ratio between the ON and OFF states of 16.5 dB and energyconsumptions of<0.3 pJ/bit are obtained. Finally, it has been demonstrated that increasing thepermittivity of the insulator layer in the capacitor structure, the energy consumption per bit canbe reduced even further. Overall, the resonance tuning enabled by the novel graphene capacitormakes it a key component for future multilevel photonic memories and optical routing in highperformance computing.en_GB
dc.description.sponsorshipEngineering and Physical Sciences Research Council (EPSRC)en_GB
dc.identifier.citationVol. 27, no. 24/25, pp. 35129 - 35129en_GB
dc.identifier.doi10.1364/oe.27.035129
dc.identifier.grantnumberEP/L015331/en_GB
dc.identifier.grantnumberEP/L021129/en_GB
dc.identifier.grantnumberEP/N013247/1en_GB
dc.identifier.grantnumberEP/N035569/1en_GB
dc.identifier.urihttp://hdl.handle.net/10871/39650
dc.language.isoenen_GB
dc.publisherOptical Society of Americaen_GB
dc.rightsPublished by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.en_GB
dc.titleTuning silicon-rich nitride microring resonances with graphene capacitors for high-performance computing applicationsen_GB
dc.typeArticleen_GB
dc.date.available2019-11-20T16:54:05Z
dc.descriptionThis is the final version. Available from the Optical Society of America via the DOI in this record.en_GB
dc.identifier.eissn1094-4087
dc.identifier.journalOptics Expressen_GB
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/ en_GB
dcterms.dateAccepted2019-11-01
exeter.funder::Engineering and Physical Sciences Research Council (EPSRC)en_GB
rioxxterms.versionVoRen_GB
rioxxterms.licenseref.startdate2019-11-15
rioxxterms.typeJournal Article/Reviewen_GB
refterms.dateFCD2019-11-20T16:50:34Z
refterms.versionFCDVoR
refterms.dateFOA2019-11-20T16:54:08Z
refterms.panelBen_GB


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Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Except where otherwise noted, this item's licence is described as Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.