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, Shing Trong Wu

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)25545-25553
Number of pages9
JournalOptics Express
Volume20
Issue number23
DOIs
Publication statusPublished - 2012 Nov 5

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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