Optical switching of a metal-clad waveguide with a ferroelectric liquid crystal

Masaya Mitsuishi, Shinzaburo Ito, Masahide Yamamoto, Thomas Fischer, Wolfgang Knoll

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Optical switching based on waveguide optics with a ferroelectric liquid crystal (FLC) is reported. The FLC cell was prepared as a prism coupler on which the liquid-crystal layer was sandwiched between two gold cladding layers. The role of the gold layer was examined, and the optimum thickness of the top gold layer for obtaining high contrast was determined by use of the Fresnel equation. Various optical modulations of reflectivity were predicted on the basis of theoretical calculation, taking into account the molecular reorientation of the FLC, and examined at an appropriate angle of incidence and rotational angle of the FLC cell with respect to the plane of incidence.

Original languageEnglish
Pages (from-to)9225-9229
Number of pages5
JournalApplied optics
Issue number35
Publication statusPublished - 1997 Dec 10
Externally publishedYes


  • Ferroelectric liquid crystal
  • Metal cladding
  • Optical switching
  • Waveguide

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering


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