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Optics Letters

Optics Letters


  • Vol. 29, Iss. 9 — May. 1, 2004
  • pp: 974–976

One-mode model for patterned metal layers inside integrated color pixels

Peter B. Catrysse, Wonjoo Suh, Shanhui Fan, and Michael Peeters  »View Author Affiliations

Optics Letters, Vol. 29, Issue 9, pp. 974-976 (2004)

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Optimized design of the optical filters inside integrated color pixels (ICPs) for complementary metal-oxide semiconductor image sensors requires analytical models. ICP optical filters consist of subwavelength patterned metal layers. We show that a one-mode model, in which subwavelength gaps in the metal layer are described in terms of single-mode waveguides, suffices to predict the salient features of measured ICP wavelength selectivity. The Airy-like transmittance formula, derived for transverse-electric polarization, predicts an angle-independent cutoff wavelength, which is in good agreement with predictions made with a two-dimensional finite-difference time-domain method.

© 2004 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.2770) Diffraction and gratings : Gratings
(110.2970) Imaging systems : Image detection systems
(130.3120) Integrated optics : Integrated optics devices
(260.2110) Physical optics : Electromagnetic optics

Peter B. Catrysse, Wonjoo Suh, Shanhui Fan, and Michael Peeters, "One-mode model for patterned metal layers inside integrated color pixels," Opt. Lett. 29, 974-976 (2004)

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