Infrared extinction of a dye-doped (Polymer/liquid crystal) composite film

Seiji Fukushima, Kazuhiro Ariki, Koki Yoshinaga, Hiroki Higuchi, Hirotsugu Kikuchi

Research output: Contribution to journalArticle

Abstract

Infrared extinction of a dye-doped (polymer/liquid crystal) composite film was investigated. It is found that doping a metal-complex dye into the liquid crystal extended the operation wavelength to an optical fiber communication wavelength of about 1.5 μm. An aperture placed behind the composite film greatly improves an extinction ratio, which suggests the film functions on the basis of light scattering. Some experimental results agree to Rayleigh scattering. The film exhibits the high extinction ratio of 51 or 17.1 dB and a low polarization dependent loss of 7.6% or 0.32 dB and, then, it could be applied to a telecommunication device such as a variable optical attenuator.

Original languageEnglish
Article numberA14
Pages (from-to)163-171
Number of pages9
JournalCrystals
Volume5
Issue number1
DOIs
Publication statusPublished - Jan 5 2015

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Inorganic Chemistry

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