Analysis of polarization interference-type bpf arrays for nir spectroscopic imaging utilizing all-dielectric planar chiral metamaterials

Yasuo Ohtera, Jiyao Yu, Hirohito Yamada

Research output: Contribution to journalArticlepeer-review

Abstract

We investigated the potential application of planar chiral metamaterials (PCMs) to near infrared wavelength filters for multispectral measurement through electromagnetic simulation. PCM assumed here was a two-dimensional sub-wavelength surface grating on a high index film with chiral unit cells. The PCM exhibits optical activity (OA) for normally incident light at a finite wavelength range. Thus, by sandwiching the PCM with a pair of linear polarizers, a polarization interference-type BPF can be constructed. We focused on an all-dielectric PCM consisting of a silicon chiral layer and a dielectric underclad layer on a silica substrate. Wavelength filtering characteristics with different bandwidths have been verified for several underclad materials such as Si3N4,Al2O3, and Si.

Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalProgress In Electromagnetics Research M
Volume66
DOIs
Publication statusPublished - 2018 Jan 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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