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Proceedings Paper

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

Paper Details

Date Published: 11 February 2010
PDF: 8 pages
Proc. SPIE 7604, Integrated Optics: Devices, Materials, and Technologies XIV, 76040O (11 February 2010); doi: 10.1117/12.842692
Show Author Affiliations
Lieven Verslegers, Stanford Univ. (United States)
Peter B. Catrysse, Stanford Univ. (United States)
Zongfu Yu, Stanford Univ. (United States)
Shanhui Fan, Stanford Univ. (United States)


Published in SPIE Proceedings Vol. 7604:
Integrated Optics: Devices, Materials, and Technologies XIV
Jean-Emmanuel Broquin; Christoph M. Greiner, Editor(s)

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