Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2014-03-15

Journal: OPTICS COMMUNICATIONS

Included Journals: EI、SCIE

Volume: 315

Page Number: 32-36

ISSN: 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.