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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 19 — Sep. 23, 2013
  • pp: 22076–22089

Broadband telecom transparency of semiconductor-coated metal nanowires: more transparent than glass

R. Paniagua-Domínguez, D. R. Abujetas, L. S. Froufe-Pérez, J. J. Sáenz, and J. A. Sánchez-Gil  »View Author Affiliations

Optics Express, Vol. 21, Issue 19, pp. 22076-22089 (2013)

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Metallic nanowires (NW) coated with a high permittivity dielectric are proposed as means to strongly reduce the light scattering of the conducting NW, rendering them transparent at infrared wavelengths of interest in telecommunications. Based on a simple, universal law derived from electrostatics arguments, we find appropriate parameters to reduce the scattering efficiency of hybrid metal-dielectric NW by up to three orders of magnitude as compared with the scattering efficiency of the homogeneous metallic NW. We show that metal@dielectric structures are much more robust against fabrication imperfections than analogous dielectric@metal ones. The bandwidth of the transparent region entirely covers the near IR telecommunications range. Although this effect is optimum at normal incidence and for a given polarization, rigorous theoretical and numerical calculations reveal that transparency is robust against changes in polarization and angle of incidence, and also holds for relatively dense periodic or random arrangements. A wealth of applications based on metal-NWs may benefit from such invisibility.

© 2013 OSA

OCIS Codes
(240.3695) Optics at surfaces : Linear and nonlinear light scattering from surfaces
(250.5403) Optoelectronics : Plasmonics
(230.3205) Optical devices : Invisibility cloaks

ToC Category:
Optics at Surfaces

Original Manuscript: April 30, 2013
Revised Manuscript: June 18, 2013
Manuscript Accepted: June 19, 2013
Published: September 12, 2013

R. Paniagua-Domínguez, D. R. Abujetas, L. S. Froufe-Pérez, J. J. Sáenz, and J. A. Sánchez-Gil, "Broadband telecom transparency of semiconductor-coated metal nanowires: more transparent than glass," Opt. Express 21, 22076-22089 (2013)

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