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Optics Letters

Optics Letters


  • Vol. 29, Iss. 24 — Dec. 15, 2004
  • pp: 2864–2866

Subwavelength focusing and imaging by a multimode optical waveguide

Xianyu Ao and Sailing He  »View Author Affiliations

Optics Letters, Vol. 29, Issue 24, pp. 2864-2866 (2004)

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A simple subwavelength focusing system formed by a straight or bent multimode waveguide is investigated numerically. The simulation results indicate that an appropriately designed multimode waveguide can focus the outgoing waves of a point source and form an image with a full width at half-maximum of less than half a wavelength in the near-field area at the other side of the waveguide. The physical mechanism of the subwavelength focusing for this imaging system is explained.

© 2004 Optical Society of America

OCIS Codes
(110.0110) Imaging systems : Imaging systems
(230.7370) Optical devices : Waveguides

Xianyu Ao and Sailing He, "Subwavelength focusing and imaging by a multimode optical waveguide," Opt. Lett. 29, 2864-2866 (2004)

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