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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 23 — Dec. 1, 2013
  • pp: 5036–5039

Photothermal nonlinearity and optical bistability in a graphene–silicon waveguide resonator

Cameron Horvath, Daniel Bachman, Rob Indoe, and Vien Van  »View Author Affiliations

Optics Letters, Vol. 38, Issue 23, pp. 5036-5039 (2013)

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We report observation of optical bistability and enhanced thermal nonlinearity in a graphene–silicon waveguide resonator. Photo-induced Joule heating in the graphene layer gives rise to a temperature increase in the silicon waveguide core and a corresponding thermo-optic shift in the resonance of the Fabry–Perot resonator. Measurement of the nonlinear resonance spectra showed a 9-fold increase in the effective thermal nonlinear index due to the graphene layer compared with a bare silicon waveguide.

© 2013 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(190.1450) Nonlinear optics : Bistability
(190.4360) Nonlinear optics : Nonlinear optics, devices
(190.4870) Nonlinear optics : Photothermal effects

ToC Category:
Nonlinear Optics

Original Manuscript: September 9, 2013
Manuscript Accepted: October 15, 2013
Published: November 22, 2013

Cameron Horvath, Daniel Bachman, Rob Indoe, and Vien Van, "Photothermal nonlinearity and optical bistability in a graphene–silicon waveguide resonator," Opt. Lett. 38, 5036-5039 (2013)

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