Metal-dielectric coatings for variable transmission filters with wide rejection bands

Angela Piegari, Vesna Janicki

Research output: Contribution to conferencePaper

8 Citations (Scopus)


Metal-dielectric coatings are able to give high rejection in a wide wavelength range due to the reflection effect of metal layers. At the same time it is possible, according to the theory of induced transmission filters, to reach a quite high transmission peak at a single wavelength, starting from a metal layer and adding appropriate dielectric matching layers. Following this theoretical approach, narrow band-pass (10nm) filters having a peak transmission of 70% and a rejection out-band with extreme wavelengths in the ratio 2.5:1, are designed for the visible-near infrared spectrum. The low number of layers makes them interesting when a spatial variable filter has to be realized in a small dimension. Examples of their optical behavior at different wavelengths are reported.
Original languageEnglish
Publication statusPublished - 2004
EventAdvances in Optical Thin Films - , France
Duration: 1 Jan 2004 → …


ConferenceAdvances in Optical Thin Films
Period1/1/04 → …


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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