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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 11 — Jun. 2, 2014
  • pp: 13418–13426

Super-transmission from a finite subwavelength arrangement of slits in a metal film

Shuwen Chen, Shilong Jin, and Reuven Gordon  »View Author Affiliations

Optics Express, Vol. 22, Issue 11, pp. 13418-13426 (2014)

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A theory is presented for the transmission of transverse magnetic waves through a finite number of subwavelength slits in metal film. While a single slit achieves the single channel limit on resonance, multiple slits show super-transmission exceeding the single channel limit. The phenomenon of super-transmission is revealed as a result of cross-coupling of modes and confirmed by simulations. The influence of finite permittivity in the IR and microwave regime is included by perturbative corrections to the theory. The theory agrees quantitatively with past experiments and finite-difference time-domain simulations. By considering two or more modes in the slit region, our theory provides an approach to the analysis of cross-coupling among slits, which allows for super-transmission and features of a Fano resonance.

© 2014 Optical Society of America

OCIS Codes
(230.4555) Optical devices : Coupled resonators
(250.5403) Optoelectronics : Plasmonics
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:

Original Manuscript: March 27, 2014
Manuscript Accepted: May 19, 2014
Published: May 27, 2014

Shuwen Chen, Shilong Jin, and Reuven Gordon, "Super-transmission from a finite subwavelength arrangement of slits in a metal film," Opt. Express 22, 13418-13426 (2014)

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