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Proceedings Paper

Selectively infiltrated photonic crystal fibers for strain measurement with ultra-high sensitivity
Author(s): Y. Wang; D. N. Wang
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Paper Abstract

An ultrasensitive strain sensor is demonstrated by selectively filling one of the air holes in the photonic crystal fiber. Light propagated in the photonic crystal fiber core can be coupled to the liquid-filled rod-waveguide efficiently under phase-matching conditions. The resonant wavelength, which corresponds to the coupling between the fundamental core mode and the fundamental mode of the adjacent liquid rod waveguide, experiences large shift by applying axial strain. The experimental results obtained show that the strain sensitivity achieved is ~394.6 pm/με, which is one or two orders higher than that of conventional fiber gratings.

Paper Details

Date Published: 7 November 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84217J (7 November 2012); doi: 10.1117/12.945920
Show Author Affiliations
Y. Wang, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Wuhan Institute of Technology (China)
D. N. Wang, The Hong Kong Polytechnic Univ. (Hong Kong, China)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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