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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 5 — Feb. 27, 2012
  • pp: 5264–5269

Broadband graphene electro-optic modulators with sub-wavelength thickness

C.-C. Lee, S. Suzuki, W. Xie, and T. R. Schibli  »View Author Affiliations

Optics Express, Vol. 20, Issue 5, pp. 5264-5269 (2012)

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Graphene’s featureless optical absorption, ultrahigh carrier mobility, and variable optical absorption by an applied gate voltage enable a new breed of optical modulators with broad optical and electrical bandwidths. Here we report on an electro-optic modulator that integrates single-layer graphene in a sub-wavelength thick, reflective modulator structure. These modulators provide a large degree of design freedom, which allows tailoring of their optical properties to specific needs. Current devices feature an active aperture ~100 µm, and provide uniform modulation with flat frequency response from 1 Hz to >100 MHz. These novel, low insertion-loss graphene-based modulators offer solutions to a variety of high-speed amplitude modulation tasks that require optical amplitude modulation without phase distortions, a flat frequency response, or ultra-thin geometries, such as for controlling monolithic, high-repetition rate mode-locked lasers or active interferometers.

© 2012 OSA

OCIS Codes
(230.4110) Optical devices : Modulators
(160.4236) Materials : Nanomaterials
(310.6845) Thin films : Thin film devices and applications

ToC Category:
Optical Devices

Original Manuscript: December 7, 2011
Revised Manuscript: January 22, 2012
Manuscript Accepted: February 10, 2012
Published: February 17, 2012

C.-C. Lee, S. Suzuki, W. Xie, and T. R. Schibli, "Broadband graphene electro-optic modulators with sub-wavelength thickness," Opt. Express 20, 5264-5269 (2012)

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