Electro-optic routing in a nematic liquid-crystal waveguide

Rita Asquini*, Andrea Fratalocchi, Antonio D'Alessandro, Gaetano Assanto

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


We propose a versatile guided-wave geometry encompassing electro-optic control for signal routing. A zero-gap directional coupler in liquid crystal can switch between two output states in the guide plane, permitting signal rerouting with modulation voltages as small as 70 mV. In the absence of an applied bias, no guiding - hence no modal output - is provided by the structure.

Original languageEnglish (US)
Pages (from-to)4136-4143
Number of pages8
JournalApplied Optics
Issue number19
StatePublished - Jul 1 2005
Externally publishedYes

ASJC Scopus subject areas

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


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