LC tuning slow light photonic crystal waveguide

Guan Huei Li, Fu Li Hsiao

Research output: Chapter in Book/Report/Conference proceedingConference contribution


One-dimensional photonic crystals (PhC) based on silicon with infiltrated nematic liquid crystals (NLC) are investigated in this paper. We show that the band structure and photonic band gap can be continuously tuned by changing external voltage. The applied voltage variation will affect the direction of liquid crystal molecules, altering the refractive index near the waveguide. We considered arbitrary direction of propagation of electromagnetic waves. The band structure, group velocity and band gap can be tuned by changing applied voltage to modify the direction of LC molecules. We used the finite element method (FEM) to calculate the optical characteristic in anisotropic material system. A large tuning range of about 49 nm at a low operating voltage of 10 V is achieved due to the optical anisotropy of the NLC molecular.

Original languageEnglish
Title of host publication21st International Display Workshops 2014, IDW 2014
PublisherSociety for Information Display
Number of pages3
ISBN (Electronic)9781510827790
Publication statusPublished - 2014 Jan 1
Event21st International Display Workshops 2014, IDW 2014 - Niigata, Japan
Duration: 2014 Dec 32014 Dec 5

Publication series

Name21st International Display Workshops 2014, IDW 2014


Other21st International Display Workshops 2014, IDW 2014

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Human-Computer Interaction
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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