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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 10 — Apr. 1, 2011
  • pp: 1356–1363

Polarizing color filter based on a subwavelength metal–dielectric grating

Yan Ye, Yun Zhou, Heng Zhang, and Linsen Chen  »View Author Affiliations

Applied Optics, Vol. 50, Issue 10, pp. 1356-1363 (2011)

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We propose a polarizing color filter based on a one-dimensional subwavelength metal–dielectric grating combining the functions of a polarizer and a color filter. The proposed device consists of three parts: a substrate, a dielectric grating, and a metal grating. The effects of the dielectric grating and the metal grating are investigated in detail by rigorous coupled-wave analysis. Performance is enhanced effectively by utilizing a dielectric grating of high equivalent refractive index. Typical optimized structural parameters are obtained, in which more than 72.6% broadband transmission with > 21 dB polarization extinction ratio are simultaneously achieved for a tricolor filter. For transverse electric (TE) polarized light, its reflection efficiency is more than 71.8% in the broad passband light range, which can be recycled by rotating the TE polarization in part into transverse magnetic polarization and reimpinging on the designed device to increase the total energy efficiency. Numerical results show that peak transmission efficiency (PTE) is increased by at least 12.9% using recycled TE-polarized light.

© 2011 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(090.0090) Holography : Holography
(230.0230) Optical devices : Optical devices

ToC Category:
Diffraction and Gratings

Original Manuscript: July 28, 2010
Revised Manuscript: January 3, 2011
Manuscript Accepted: January 22, 2011
Published: March 24, 2011

Yan Ye, Yun Zhou, Heng Zhang, and Linsen Chen, "Polarizing color filter based on a subwavelength metal–dielectric grating," Appl. Opt. 50, 1356-1363 (2011)

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