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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 16 — Aug. 15, 2014
  • pp: 4938–4941

All-optical modulation and switching by a metamaterial of plasmonic circuits

Timothy J. Davis, Daniel E. Gómez, and Fatima Eftekhari  »View Author Affiliations

Optics Letters, Vol. 39, Issue 16, pp. 4938-4941 (2014)

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We demonstrate experimentally the modulation and switching of one light beam by a second beam using metamaterials constructed from arrays of plasmonic circuits. Each circuit consists of three gold nanorods that mix together two coherent but orthogonally polarized light beams leading to modulation by an interference effect. By adjusting the phase and the amplitude of one of the beams, the amplitude and spectral composition of the second beam is altered. The plasmonic circuits display an asymmetry that enables an angle-dependent modulation, which we demonstrate with a diffraction grating where the energy directed into two diffraction orders is controlled by a second light beam. This effect appears like an optically controlled blaze that we use to switch a light beam between two different directions.

© 2014 Optical Society of America

OCIS Codes
(230.1150) Optical devices : All-optical devices
(230.1950) Optical devices : Diffraction gratings
(230.4110) Optical devices : Modulators
(250.5403) Optoelectronics : Plasmonics
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Optical Devices

Original Manuscript: June 30, 2014
Manuscript Accepted: July 17, 2014
Published: August 15, 2014

Timothy J. Davis, Daniel E. Gómez, and Fatima Eftekhari, "All-optical modulation and switching by a metamaterial of plasmonic circuits," Opt. Lett. 39, 4938-4941 (2014)

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