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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 10 — May. 7, 2012
  • pp: 10827–10832

Optically tunable chirped fiber Bragg grating

Zhen Li, Zhe Chen, V.K.S. Hsiao, Jie-Yuan Tang, Fuli Zhao, and Shao-Ji Jiang  »View Author Affiliations


Optics Express, Vol. 20, Issue 10, pp. 10827-10832 (2012)
http://dx.doi.org/10.1364/OE.20.010827


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Abstract

This work presents an optically tunable chirped fiber Bragg grating (CFBG). The CFBG is obtained by a side-polished fiber Bragg grating (SPFBG) whose thickness of the residual cladding layer in the polished area (DRC) varies with position along the length of the grating, which is coated with a photoresponsive liquid crystal (LC) overlay. The reflection spectrum of the CFBG is tuned by refractive index (RI) modulation, which comes from the phase transition of the overlaid photoresponsive LC under ultraviolet (UV) light irradiation. The broadening in the reflection spectrum and corresponding shift in the central wavelength are observed with UV light irradiation density of 0.64mW/mm2. During the phase transition of the photoresponsive LC, the RI increase of the overlaid LC leads to the change of the CFBG reflection spectrum and the change is reversible and repeatable. The optically tunable CFBGs have potential use in optical DWDM system and an all-fiber telecommunication system.

© 2012 OSA

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(230.1150) Optical devices : All-optical devices
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: February 21, 2012
Revised Manuscript: April 15, 2012
Manuscript Accepted: April 23, 2012
Published: April 25, 2012

Citation
Zhen Li, Zhe Chen, V.K.S. Hsiao, Jie-Yuan Tang, Fuli Zhao, and Shao-Ji Jiang, "Optically tunable chirped fiber Bragg grating," Opt. Express 20, 10827-10832 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-10-10827


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