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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| Format: | Article |
| Language: | English |
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IEEE
2021-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9583873/ |
| _version_ | 1818932518267650048 |
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| author | Mohammed Alaloul Jacob B. Khurgin |
| author_facet | Mohammed Alaloul Jacob B. Khurgin |
| author_sort | Mohammed Alaloul |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-20T04:33:45Z |
| format | Article |
| id | doaj.art-891a583dcf0340aba7aefe100c23d658 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-12-20T04:33:45Z |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-891a583dcf0340aba7aefe100c23d6582022-12-21T19:53:19ZengIEEEIEEE Photonics Journal1943-06552021-01-011361810.1109/JPHOT.2021.31221059583873Plasmonic Photovoltaic Double-Graphene Detector Integrated Into TiN Slot WaveguidesMohammed Alaloul0https://orcid.org/0000-0001-6799-6859Jacob B. Khurgin1https://orcid.org/0000-0003-0725-8736Department of Electrical and Computer Engineering, New York University Abu Dhabi, Abu Dhabi, UAEElectrical and Computer Engineering Department, Johns Hopkins University, Baltimore, MD, USAGraphene 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.https://ieeexplore.ieee.org/document/9583873/Silicon photonicsnanophotonicsplasmonicsphotodetectorsgraphene2D materials |
| spellingShingle | Mohammed Alaloul Jacob B. Khurgin Plasmonic Photovoltaic Double-Graphene Detector Integrated Into TiN Slot Waveguides IEEE Photonics Journal Silicon photonics nanophotonics plasmonics photodetectors graphene 2D materials |
| title | 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_short | Plasmonic Photovoltaic Double-Graphene Detector Integrated Into TiN Slot Waveguides |
| title_sort | plasmonic photovoltaic double graphene detector integrated into tin slot waveguides |
| topic | Silicon photonics nanophotonics plasmonics photodetectors graphene 2D materials |
| url | https://ieeexplore.ieee.org/document/9583873/ |
| work_keys_str_mv | AT mohammedalaloul plasmonicphotovoltaicdoublegraphenedetectorintegratedintotinslotwaveguides AT jacobbkhurgin plasmonicphotovoltaicdoublegraphenedetectorintegratedintotinslotwaveguides |