Tunable liquid crystal-resonant grating filter fabricated by nanoimprint lithography

Allan S.P. Chang, Keith J. Morton, Hua Tan, Patrick F. Murphy, Wei Wu, Stephen Y. Chou

Research output: Contribution to journalArticlepeer-review

48 Scopus citations


We demonstrate a tunable filter consisting of a subwavelength resonant grating filter cladded by a liquid crystal cell. The resonant wavelength of the grating filter is tuned by electrically varying the refractive index of the liquid crystal. A tuning range of around 20 nm has been achieved.

Original languageEnglish (US)
Pages (from-to)1457-1459
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number19
StatePublished - Oct 1 2007

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


  • Gratings
  • Liquid crystal devices
  • Resonant waveguide grating filter
  • Tunable filter


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