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Optics Express

Optics Express

  • Editor: C. Martijin de Sterke
  • Vol. 19, Iss. 7 — Mar. 28, 2011
  • pp: 6756–6761

Reversible photo-induced long-period fiber gratings in photonic liquid crystal fibers

Jia-hong Liou, Tin-hao Chang, Ta Lin, and Chin-ping Yu  »View Author Affiliations

Optics Express, Vol. 19, Issue 7, pp. 6756-6761 (2011)

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A novel light-controllable long-period fiber grating (LPFG) is demonstrated by making use of a PCF infiltrated with a photoresponsive liquid crystal (LC) mixture consisting of nematic LC molecules and light-sensitive 4-methoxyazobenzene (4MAB). With the aid of the photo-induced isomerization of 4MAB, the refractive index of the LC mixture can be modulated and the periodic index perturbation along the fiber can be achieved by exposing the PCF to a blue laser through a mask. The resonance wavelength and dip depth of the LPFG can be controlled by using different blue-laser irradiation time, numbers of period, and 4MAB concentrations. In addition, the photo-induced LPFG is erasable under green-laser illumination.

© 2011 OSA

OCIS Codes
(230.3720) Optical devices : Liquid-crystal devices
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: January 25, 2011
Revised Manuscript: March 8, 2011
Manuscript Accepted: March 13, 2011
Published: March 24, 2011

Jia-hong Liou, Tin-hao Chang, Ta Lin, and Chin-ping Yu, "Reversible photo-induced long-period fiber gratings in photonic liquid crystal fibers," Opt. Express 19, 6756-6761 (2011)

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