Reconfigurable nanophotonic cavities with nonvolatile response

The use of phase-change materials on waveguide photonics is presently being purported for a range of applications from on-chip photonic data storage to new computing paradigms. Photonic integrated circuits in combination with phase-change materials provide on-chip control handles, featuring nonvolat...

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Main Authors: Jan von Keitz, Feldmann, J, Gruhler, N, Rios, C, Wright, CD, Bhaskaran, H, Pemice, WHP
Format: Journal article
Language:English
Published: American Chemical Society 2018
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author Jan von Keitz
Feldmann, J
Gruhler, N
Rios, C
Wright, CD
Bhaskaran, H
Pemice, WHP
author_facet Jan von Keitz
Feldmann, J
Gruhler, N
Rios, C
Wright, CD
Bhaskaran, H
Pemice, WHP
author_sort Jan von Keitz
collection OXFORD
description The use of phase-change materials on waveguide photonics is presently being purported for a range of applications from on-chip photonic data storage to new computing paradigms. Photonic integrated circuits in combination with phase-change materials provide on-chip control handles, featuring nonvolatility and operation speeds down to the nano- and picosecond regime. Besides ultrafast control, efficient operation of nonvolatile elements is crucial and requires compact photonic designs. Here we embed phase-change materials in photonic crystal cavities to realize tunable nanophotonic devices which can be reconfigured on demand. The devices exploit strong light matter interactions between the resonant modes of the cavity and the evanescently coupled phase-change material cell. This results in an increased transmission contrast and a power reduction of 520% over conventional phase-change nanophotonic devices when reversibly switched with optical pulses. Such designs can thus open up new areas of reconfigurable nanophotonics without sacrificing the speeds or functionality for applications in optical memory cells, optical switches, and tunable wavelength filters.
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spelling oxford-uuid:0b6bbb68-e0b4-4d8a-8020-e4d1def1210b2022-03-26T09:29:18ZReconfigurable nanophotonic cavities with nonvolatile responseJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0b6bbb68-e0b4-4d8a-8020-e4d1def1210bEnglishSymplectic ElementsAmerican Chemical Society2018Jan von KeitzFeldmann, JGruhler, NRios, CWright, CDBhaskaran, HPemice, WHPThe use of phase-change materials on waveguide photonics is presently being purported for a range of applications from on-chip photonic data storage to new computing paradigms. Photonic integrated circuits in combination with phase-change materials provide on-chip control handles, featuring nonvolatility and operation speeds down to the nano- and picosecond regime. Besides ultrafast control, efficient operation of nonvolatile elements is crucial and requires compact photonic designs. Here we embed phase-change materials in photonic crystal cavities to realize tunable nanophotonic devices which can be reconfigured on demand. The devices exploit strong light matter interactions between the resonant modes of the cavity and the evanescently coupled phase-change material cell. This results in an increased transmission contrast and a power reduction of 520% over conventional phase-change nanophotonic devices when reversibly switched with optical pulses. Such designs can thus open up new areas of reconfigurable nanophotonics without sacrificing the speeds or functionality for applications in optical memory cells, optical switches, and tunable wavelength filters.
spellingShingle Jan von Keitz
Feldmann, J
Gruhler, N
Rios, C
Wright, CD
Bhaskaran, H
Pemice, WHP
Reconfigurable nanophotonic cavities with nonvolatile response
title Reconfigurable nanophotonic cavities with nonvolatile response
title_full Reconfigurable nanophotonic cavities with nonvolatile response
title_fullStr Reconfigurable nanophotonic cavities with nonvolatile response
title_full_unstemmed Reconfigurable nanophotonic cavities with nonvolatile response
title_short Reconfigurable nanophotonic cavities with nonvolatile response
title_sort reconfigurable nanophotonic cavities with nonvolatile response
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