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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 11 — Jun. 1, 2013
  • pp: 1930–1932

Spectral hole burning in silicon waveguides with a graphene layer on top

Zhenzhou Cheng, Hon Ki Tsang, Ke Xu, and Zerui Shi  »View Author Affiliations


Optics Letters, Vol. 38, Issue 11, pp. 1930-1932 (2013)
http://dx.doi.org/10.1364/OL.38.001930


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Abstract

We present an experimental study of the nonlinear absorption of graphene-on-silicon waveguides. The wavelength dependence of absorption saturation from a narrow linewidth optical pump is measured. Spectral hole burning (SHB) introduces a decrease in the probe absorption near the pump wavelength, which may be distinguished from the free carrier absorption (FCA) by using the time dependence of the buildup of the free carrier population. Beyond SHB bandwidth, only FCA dominates the waveguide loss. The spectral bandwidth of absorption bleaching from SHB is measured to have a full width at half-maximum of 12meV (20nm) at 16.8 dBm pump power.

© 2013 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(160.2100) Materials : Electro-optical materials
(160.3130) Materials : Integrated optics materials
(160.4330) Materials : Nonlinear optical materials
(190.4400) Nonlinear optics : Nonlinear optics, materials

ToC Category:
Materials

History
Original Manuscript: February 8, 2013
Revised Manuscript: May 3, 2013
Manuscript Accepted: May 3, 2013
Published: May 28, 2013

Citation
Zhenzhou Cheng, Hon Ki Tsang, Ke Xu, and Zerui Shi, "Spectral hole burning in silicon waveguides with a graphene layer on top," Opt. Lett. 38, 1930-1932 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-11-1930


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