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Determination of the quasi-TE mode (in-plane) graphene linear absorption coefficient via integration with silicon-on-insulator racetrack cavity resonators

Determination of the quasi-TE mode (in-plane) graphene linear absorption coefficient via integration with silicon-on-insulator racetrack cavity resonators
Determination of the quasi-TE mode (in-plane) graphene linear absorption coefficient via integration with silicon-on-insulator racetrack cavity resonators
We examine the near-IR light-matter interaction for graphene integrated cavity ring resonators based on silicon-on-insulator (SOI) race-track waveguides. Fitting of the cavity resonances from quasi-TE mode transmission spectra reveal the real part of the effective refractive index for graphene, neff = 2.23 ± 0.02 and linear absorption coefficient, αgTE = 0.11 ± 0.01dBµm-1. The evanescent nature of the guided mode coupling to graphene at resonance depends strongly on the height of the graphene above the cavity, which places limits on the cavity length for optical sensing applications.
1094-4087
18625-18632
Crowe, Iain F.
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Clark, Nicholas
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Hussein, Siham
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Towlson, Brian
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Whittaker, Eric
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Milošević, Milan
b28da945-84a5-4317-8896-6d9ea6a69589
Gardes, Frederic Y.
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Mashanovich, Goran Z.
c806e262-af80-4836-b96f-319425060051
Halsall, Matthew P.
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Vijayaraghaven, Aravind
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Crowe, Iain F.
e48916ae-ac94-46da-a552-6af8c7b75f1b
Clark, Nicholas
57c9dafb-2435-4209-bc18-55eeaa5161ff
Hussein, Siham
4082dea8-8be3-4512-b89b-eb5b344b50ec
Towlson, Brian
8b6217a3-2def-4058-b6f4-634e4466187a
Whittaker, Eric
4410a029-c468-4982-ac6f-60d582f033d6
Milošević, Milan
b28da945-84a5-4317-8896-6d9ea6a69589
Gardes, Frederic Y.
7a49fc6d-dade-4099-b016-c60737cb5bb2
Mashanovich, Goran Z.
c806e262-af80-4836-b96f-319425060051
Halsall, Matthew P.
da891598-3a6b-4da7-bb4d-dea2be7abf39
Vijayaraghaven, Aravind
9ef792e4-96d2-4d90-9e6b-308f771546cb

Crowe, Iain F., Clark, Nicholas, Hussein, Siham, Towlson, Brian, Whittaker, Eric, Milošević, Milan, Gardes, Frederic Y., Mashanovich, Goran Z., Halsall, Matthew P. and Vijayaraghaven, Aravind (2014) Determination of the quasi-TE mode (in-plane) graphene linear absorption coefficient via integration with silicon-on-insulator racetrack cavity resonators. Optics Express, 22 (15), 18625-18632. (doi:10.1364/OE.22.018625).

Record type: Article

Abstract

We examine the near-IR light-matter interaction for graphene integrated cavity ring resonators based on silicon-on-insulator (SOI) race-track waveguides. Fitting of the cavity resonances from quasi-TE mode transmission spectra reveal the real part of the effective refractive index for graphene, neff = 2.23 ± 0.02 and linear absorption coefficient, αgTE = 0.11 ± 0.01dBµm-1. The evanescent nature of the guided mode coupling to graphene at resonance depends strongly on the height of the graphene above the cavity, which places limits on the cavity length for optical sensing applications.

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Published date: 25 July 2014
Organisations: Optoelectronics Research Centre

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Local EPrints ID: 367458
URI: https://eprints.soton.ac.uk/id/eprint/367458
ISSN: 1094-4087
PURE UUID: f615c913-089c-4c63-b96e-c2f1d4de5d93

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Date deposited: 01 Aug 2014 17:21
Last modified: 19 Jul 2019 21:06

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Contributors

Author: Iain F. Crowe
Author: Nicholas Clark
Author: Siham Hussein
Author: Brian Towlson
Author: Eric Whittaker
Author: Matthew P. Halsall
Author: Aravind Vijayaraghaven

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