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Proceedings Article

Deep-subwavelength focusing and steering of light in an aperiodic metallic waveguide array

[+] Author Affiliations
Lieven Verslegers, Peter B. Catrysse, Zongfu Yu, Shanhui Fan

Stanford Univ. (USA)

Proc. SPIE 7604, Integrated Optics: Devices, Materials, and Technologies XIV, 76040O (February 11, 2010); doi:10.1117/12.842692
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From Conference Volume 7604

  • Integrated Optics: Devices, Materials, and Technologies XIV
  • Jean-Emmanuel Broquin; Christoph M. Greiner
  • San Francisco, California | January 23, 2010

abstract

We consider an aperiodic array of coupled metallic waveguides with varying subwavelength widths. For an incident plane wave, we numerically demonstrate that a focus of as small as one hundredth of a wavelength can be achieved for a focal distance that is much longer than the wavelength. Moreover, the focusing behavior can be controlled by changing either the incident wavelength, or the angle of incidence, thus providing the capability of nanoscale beam steering. We show that the behavior of such subwavelength focusing can be understood using Hamiltonian optics.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Lieven Verslegers ; Peter B. Catrysse ; Zongfu Yu and Shanhui Fan
"Deep-subwavelength focusing and steering of light in an aperiodic metallic waveguide array", Proc. SPIE 7604, Integrated Optics: Devices, Materials, and Technologies XIV, 76040O (February 11, 2010); doi:10.1117/12.842692; http://dx.doi.org/10.1117/12.842692


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