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Indexed by:期刊论文

Date of Publication:2014-03-15

Journal:OPTICS COMMUNICATIONS

Included Journals:SCIE、EI

Volume:315

Page Number:32-36

ISSN No.:0030-4018

Key Words:Subwavlength metallic grating; Color filter; Transmission enhancement; Groove; Fabry-Perot like resonant

Abstract:A polarizing color filter based on subwavelength metallic grating with grooves carved in the wires is investigated using the finite-difference-time-domain (FOTO). method. Three different devices are designed based on the transmission characteristics under different geometrical parameters: the maximum transmittances are 69.7%, 74.8% and 65.3%, the extinction ratios at the transmission peak wavelength are 148, 70 and 41, and the full widths at half-maximum (FWHM) are 101 nm, 90 nm and 107 nm, respectively. The structure not only obtains a high transmittance, broad bandwidth and desirable extinction ratio, but also suppresses redundant spectral peaks and transmission sidebands. Therefore, it provides a new reference for the design of color filters. (C) 2013 Elsevier B.V. All rights reserved.