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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 23 — Nov. 5, 2012
  • pp: 25545–25553

Bichromatic optical switch of diffractive light from a BCT photonic crystal based on an azo component-doped HPDLC

Ming Shian Li, Andy Ying-Guey Fuh, Jui-Hsiang Liu, and Shing-Trong Wu  »View Author Affiliations

Optics Express, Vol. 20, Issue 23, pp. 25545-25553 (2012)

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This study demonstrates all optical switches between the four diffractive light levels of a body-centered tetragonal photonic crystal. The sample is based on holographic polymer-dispersed liquid crystals that are fabricated using a two-beam interference with multiple exposures. The switching mechanism bases on the effective index modulation of the PC that contains a liquid crystal/azo-dye mixture could be controlled by two pumping laser beams. The switching time between the blue-laser-pumped and the blue-and-green-laser-pumped levels is fast. The study also discusses the switching time of the various levels.

© 2012 OSA

OCIS Codes
(160.3710) Materials : Liquid crystals
(160.5470) Materials : Polymers
(050.5298) Diffraction and gratings : Photonic crystals

ToC Category:
Optical Devices

Original Manuscript: September 5, 2012
Revised Manuscript: October 11, 2012
Manuscript Accepted: October 19, 2012
Published: October 25, 2012

Ming Shian Li, Andy Ying-Guey Fuh, Jui-Hsiang Liu, and Shing-Trong Wu, "Bichromatic optical switch of diffractive light from a BCT photonic crystal based on an azo component-doped HPDLC," Opt. Express 20, 25545-25553 (2012)

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