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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 4 — Feb. 15, 2013
  • pp: 531–533

Polarization-maintaining fiber-optic-grating vector vibroscope

Tuan Guo, Libin Shang, Fu Liu, Chuang Wu, Bai-Ou Guan, Hwa-Yaw Tam, and Jacques Albert  »View Author Affiliations


Optics Letters, Vol. 38, Issue 4, pp. 531-533 (2013)
http://dx.doi.org/10.1364/OL.38.000531


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Abstract

A fiber-optic vector vibroscope based on orthogonal polarization cladding-to-core recoupling is demonstrated. A compact structure in which a short section of polarization-maintained (PM) fiber stub containing a straight fiber Bragg grating (FBG) is spliced to another single-mode fiber. Two well-defined orthogonally polarized cladding modes reflected by the PM-FBG are recoupled at the junction and the coupling intensity shows an extremely high sensitivity to bending in the corresponding orthogonal directions. Both the orientation and amplitude of the vibrations can be determined unambiguously via dual-path power detection of these recoupled orthogonal-polarimetric cladding modes (LP1,12 and LP1,13). Since spectral information is not required, temperature changes do not affect the sensor response, and power fluctuations can be referenced out by monitoring the power in the core mode (LP0,1) resonance.

© 2013 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: December 18, 2012
Revised Manuscript: January 13, 2013
Manuscript Accepted: January 14, 2013
Published: February 12, 2013

Citation
Tuan Guo, Libin Shang, Fu Liu, Chuang Wu, Bai-Ou Guan, Hwa-Yaw Tam, and Jacques Albert, "Polarization-maintaining fiber-optic-grating vector vibroscope," Opt. Lett. 38, 531-533 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-4-531


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