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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 3 — Feb. 10, 2014
  • pp: 3593–3599

Thermodielectric generation of defect modes in a photonic liquid crystal

Yu-Cheng Hsiao, Hsiao-Tsung Wang, and Wei Lee  »View Author Affiliations

Optics Express, Vol. 22, Issue 3, pp. 3593-3599 (2014)

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Photonic defect modes induced by in situ formation of an ill-defined defect layer is demonstrated in a cholesteric liquid crystal (CLC). The local deformation of the one-dimensionally periodic helical structure is achieved by means of the thermodielectric effect, which alters the pitch in the middle of the cholesteric structure. The defect-mode peak in the photonic band gap appears in the transmission spectrum only when the incident circularly polarized light has the same handedness as that of the CLC structure. The wavelength of the deformation-induced defect mode can be tuned upon varying the dielectric heating power by simply applying a frequency-modulated voltage.

© 2014 Optical Society of America

OCIS Codes
(230.3720) Optical devices : Liquid-crystal devices
(230.5298) Optical devices : Photonic crystals

ToC Category:
Optical Devices

Original Manuscript: December 18, 2013
Revised Manuscript: February 3, 2014
Manuscript Accepted: February 3, 2014
Published: February 6, 2014

Yu-Cheng Hsiao, Hsiao-Tsung Wang, and Wei Lee, "Thermodielectric generation of defect modes in a photonic liquid crystal," Opt. Express 22, 3593-3599 (2014)

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