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Directional curvature sensor based on long period gratings in multicore optical fiber
Author(s): Javier Madrigal; David Barrera; Javier Hervás ; Hailan Chen; S. Sales
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Paper Abstract

Multicore optical fiber can be used to implement multidimensional optical fiber sensors including curvature sensors. In this paper, a selective core inscription technique is used in order to inscribe a single long period grating in each of the outer cores of the optical fiber. A set of three different long period gratings is inscribed for implementing the curvature sensor. The ability of the sensor for measuring the magnitude and the direction of curvature is demonstrated. The optical fiber sensor is characterized experimentally for curvature magnitudes from 0 m-1 to 1.77 m-1 and curvature directions from 0° to 360°.The maximum curvature sensitivity of the developed sensor is -4.85 nm/m-1.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103233A (23 April 2017); doi: 10.1117/12.2264920
Show Author Affiliations
Javier Madrigal, Univ. Politècnica de València (Spain)
David Barrera, Univ. Politècnica de València (Spain)
Javier Hervás , Univ. Politècnica de València (Spain)
Hailan Chen, Univ. Politècnica de València (Spain)
S. Sales, Univ. Politècnica de València (Spain)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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