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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 15 — Jul. 28, 2014
  • pp: 18625–18632

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

Iain F Crowe, Nicholas Clark, Siham Hussein, Brian Towlson, Eric Whittaker, Milan M Milosevic, Frederic Y Gardes, Goran Z Mashanovich, Matthew P Halsall, and Aravind Vijayaraghaven  »View Author Affiliations

Optics Express, Vol. 22, Issue 15, pp. 18625-18632 (2014)

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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.

© 2014 Optical Society of America

OCIS Codes
(240.0240) Optics at surfaces : Optics at surfaces
(240.0310) Optics at surfaces : Thin films
(240.6490) Optics at surfaces : Spectroscopy, surface

ToC Category:
Integrated Optics

Original Manuscript: May 27, 2014
Revised Manuscript: July 7, 2014
Manuscript Accepted: July 8, 2014
Published: July 24, 2014

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

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