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

Iain F. Crowe; Nick Clark; Siham Hussein; Brian Towlson; Eric Whittaker; Milan M. Milosevic; Frederic Y. Gardes; Goran Z. Mashanovich; Matthew P. Halsall; Aravind Vijayaraghavan

doi:10.1364/OE.22.018625

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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

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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

Iain F. Crowe, Nick Clark, Siham Hussein, Brian Towlson, Eric Whittaker, Milan M. Milosevic, Frederic Y. Gardes, Goran Z. Mashanovich, Matthew P. Halsall and Aravind Vijayaraghavan

Optics express, Vol.22(15), pp.18625-18632

28/07/2014

DOI: https://doi.org/10.1364/OE.22.018625

PMID: 25089481

Abstract

Optics

Physical Sciences

Science & Technology

We examine the near-IR light-matter interaction for graphene integrated cavity ring resonators based on silicon-on-insulator (SOI) racetrack waveguides. Fitting of the cavity resonances from quasi-TE mode transmission spectra reveal the real part of the effective refractive index for graphene, n(eff) = 2.23 +/- 0.02 and linear absorption coefficient, alpha(gTE) = 0.11 +/- 0.01dB mu m(-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. (C) 2014 Optical Society of America

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Title: Determination of the quasi-TE mode (in-plane) graphene linear absorption coefficient via integration with silicon-on-insulator racetrack cavity resonators
Creators - without role: Iain F. Crowe - University of Manchester
Nick Clark - University of Manchester
Siham Hussein - University of Manchester
Brian Towlson - University of Manchester
Eric Whittaker - University of Manchester
Milan M. Milosevic - University of Southampton
Frederic Y. Gardes - University of Southampton
Goran Z. Mashanovich - University of Southampton
Matthew P. Halsall - University of Manchester
Aravind Vijayaraghavan - University of Manchester
Publication Details: Optics express, Vol.22(15), pp.18625-18632
Publisher: Optical Soc Amer
Number of pages: 8
Grant note: EP/K016946/1 / Engineering and Physical Sciences Research Council; UK Research & Innovation (UKRI); Engineering & Physical Sciences Research Council (EPSRC) EP/H023836/1 / EPSRC; UK Research & Innovation (UKRI); Engineering & Physical Sciences Research Council (EPSRC) 1082926 / Engineering and Physical Sciences Research Council; UK Research & Innovation (UKRI); Engineering & Physical Sciences Research Council (EPSRC)
Identifiers: 9949013908331
Academic Unit: King Saud University
Language: English
Resource Type: Journal article