Thin photonic crystal filter with and without defect mode operation in visible region

GÜREL Ç. S., Yankı H.

Journal of Optics (India), 2026 (ESCI, Scopus) identifier

  • Publication Type: Article / Article
  • Publication Date: 2026
  • Doi Number: 10.1007/s12596-026-03103-4
  • Journal Name: Journal of Optics (India)
  • Journal Indexes: Emerging Sources Citation Index (ESCI), Scopus, Compendex, INSPEC
  • Keywords: Multilayer, Optical filter, Photonic crystal, Transfer matrix method, Transmittance
  • Hacettepe University Affiliated: Yes

Abstract

A novel one-dimensional photonic crystal (PC) structure exhibiting band-blocking characteristic in visible spectrum is proposed. Through controlled selection of subcell configurations and adjustment of their repetition numbers pure transmission band with and without center wavelength can be obtained. The results demonstrate that the desired spectral characteristics are obtained using small number of layers, ensuring structural compactness. Owing to reduced thickness and tunable spectral response, the proposed structure may exhibit high sensitivity and improved performance in biomedical sensing and color filter applications.