Plasmonic Photovoltaic Double-Graphene Detector Integrated Into TiN Slot Waveguides

Graphene has emerged as an ultrafast photonic material for on-chip photodetection. However, its atomic thickness limits its interaction with guided optical modes, which in turn weakens the photoresponse of waveguide-integrated graphene photodetectors. Nonetheless, it is possible to enhance the inter...

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Autores principales:	Mohammed Alaloul, Jacob B. Khurgin
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Silicon photonics nanophotonics plasmonics photodetectors graphene 2D materials Applied optics. Photonics TA1501-1820 Optics. Light QC350-467
Acceso en línea:	https://doaj.org/article/891a583dcf0340aba7aefe100c23d658
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id	oai:doaj.org-article:891a583dcf0340aba7aefe100c23d658
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spelling	oai:doaj.org-article:891a583dcf0340aba7aefe100c23d6582021-11-18T00:00:08ZPlasmonic Photovoltaic Double-Graphene Detector Integrated Into TiN Slot Waveguides1943-065510.1109/JPHOT.2021.3122105https://doaj.org/article/891a583dcf0340aba7aefe100c23d6582021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9583873/https://doaj.org/toc/1943-0655Graphene has emerged as an ultrafast photonic material for on-chip photodetection. However, its atomic thickness limits its interaction with guided optical modes, which in turn weakens the photoresponse of waveguide-integrated graphene photodetectors. Nonetheless, it is possible to enhance the interaction of guided light with graphene by nanophotonic means. Herein, we propose a practical design of a plasmon-enhanced photovoltaic double-graphene detector that is integrated into 5 <inline-formula><tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m long titanium nitride slot waveguides. The use of double-graphene in this configuration yields a high responsivity of 2.18 A/W and more for a 0.5 V bias, across the telecom C-band and beyond. Moreover, the device operates at an ultra-high-speed beyond 100 GHz with an ultra-low noise equivalent power of <inline-formula><tex-math notation="LaTeX">$<\!35\,$</tex-math></inline-formula>pW/<inline-formula><tex-math notation="LaTeX">$\sqrt{\text{Hz}}$</tex-math></inline-formula>. The reported features are highly promising and are expected to serve the needs of next-generation optical interconnects.Mohammed AlaloulJacob B. KhurginIEEEarticleSilicon photonicsnanophotonicsplasmonicsphotodetectorsgraphene2D materialsApplied optics. PhotonicsTA1501-1820Optics. LightQC350-467ENIEEE Photonics Journal, Vol 13, Iss 6, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Silicon photonics nanophotonics plasmonics photodetectors graphene 2D materials Applied optics. Photonics TA1501-1820 Optics. Light QC350-467
spellingShingle	Silicon photonics nanophotonics plasmonics photodetectors graphene 2D materials Applied optics. Photonics TA1501-1820 Optics. Light QC350-467 Mohammed Alaloul Jacob B. Khurgin Plasmonic Photovoltaic Double-Graphene Detector Integrated Into TiN Slot Waveguides
description	Graphene has emerged as an ultrafast photonic material for on-chip photodetection. However, its atomic thickness limits its interaction with guided optical modes, which in turn weakens the photoresponse of waveguide-integrated graphene photodetectors. Nonetheless, it is possible to enhance the interaction of guided light with graphene by nanophotonic means. Herein, we propose a practical design of a plasmon-enhanced photovoltaic double-graphene detector that is integrated into 5 <inline-formula><tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m long titanium nitride slot waveguides. The use of double-graphene in this configuration yields a high responsivity of 2.18 A/W and more for a 0.5 V bias, across the telecom C-band and beyond. Moreover, the device operates at an ultra-high-speed beyond 100 GHz with an ultra-low noise equivalent power of <inline-formula><tex-math notation="LaTeX">$<\!35\,$</tex-math></inline-formula>pW/<inline-formula><tex-math notation="LaTeX">$\sqrt{\text{Hz}}$</tex-math></inline-formula>. The reported features are highly promising and are expected to serve the needs of next-generation optical interconnects.
format	article
author	Mohammed Alaloul Jacob B. Khurgin
author_facet	Mohammed Alaloul Jacob B. Khurgin
author_sort	Mohammed Alaloul
title	Plasmonic Photovoltaic Double-Graphene Detector Integrated Into TiN Slot Waveguides
title_short	Plasmonic Photovoltaic Double-Graphene Detector Integrated Into TiN Slot Waveguides
title_full	Plasmonic Photovoltaic Double-Graphene Detector Integrated Into TiN Slot Waveguides
title_fullStr	Plasmonic Photovoltaic Double-Graphene Detector Integrated Into TiN Slot Waveguides
title_full_unstemmed	Plasmonic Photovoltaic Double-Graphene Detector Integrated Into TiN Slot Waveguides
title_sort	plasmonic photovoltaic double-graphene detector integrated into tin slot waveguides
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/891a583dcf0340aba7aefe100c23d658
work_keys_str_mv	AT mohammedalaloul plasmonicphotovoltaicdoublegraphenedetectorintegratedintotinslotwaveguides AT jacobbkhurgin plasmonicphotovoltaicdoublegraphenedetectorintegratedintotinslotwaveguides
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Plasmonic Photovoltaic Double-Graphene Detector Integrated Into TiN Slot Waveguides

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