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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 25 — Sep. 1, 2009
  • pp: F95–F100

Analysis of temperature-dependent mode transition in nanosized liquid crystal layer-coated long period gratings

Haimei Luo, Xinwan Li, Shuguang Li, and Jianping Chen  »View Author Affiliations


Applied Optics, Vol. 48, Issue 25, pp. F95-F100 (2009)
http://dx.doi.org/10.1364/AO.48.000F95


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Abstract

The cladding mode reorganization in high refractive-index (HRI)-coated long period gratings (LPGs) is theoretically analyzed and experimentally observed with the aim of exploring the sensitivity of the resonance wavelength to the change of the refractive index in a nanoscale overlay. Experimental results show that the transition between cladding modes and overlay modes occurs when the refractive index of the liquid crystal (LC) overlay is changed from 1.477 to 1.515 by increasing its temperature from 20 ° C to 65 ° C . The spectral tuning ability of LPGs coated with a HRI LC layer by electro-optic modulation on a LC layer is also demonstrated, and the maximum tuning range can reach approximately 10 nm by choosing a highly sensitive operating point in the transition region.

© 2009 Optical Society of America

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2340) Fiber optics and optical communications : Fiber optics components
(350.2770) Other areas of optics : Gratings

ToC Category:
Photonic Crystals and Gratings

History
Original Manuscript: February 4, 2009
Revised Manuscript: June 15, 2009
Manuscript Accepted: August 6, 2009
Published: August 24, 2009

Citation
Haimei Luo, Xinwan Li, Shuguang Li, and Jianping Chen, "Analysis of temperature-dependent mode transition in nanosized liquid crystal layer-coated long period gratings," Appl. Opt. 48, F95-F100 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-25-F95

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