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Proceedings Paper

Performance characteristics of continuously grated multicore sensor fiber
Author(s): Paul S. Westbrook; Tristan Kremp; Kenneth S. Feder; Wing Ko; Eric M. Monberg; Hongchao Wu; Debra A. Simoff; Scott Shenk; Roy M. Ortiz
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Paper Abstract

We describe the fabrication and performance of a continuously grated twisted multicore fiber sensor array. The grated fiber sensor comprises nearly continuous Bragg gratings along its entire length. The gratings are inscribed over lengths in excess of 10m in fibers with UV transparent coating using a flexible and scalable reel to reel processing system. The arrays are tested using optical frequency domain reflectometry (OFDR). We report on automated analysis routines applied to these OFDR measurements that allow for characterization of 100s of individual grating exposures that make up a continuously grated fiber length. We also report on the spectral loss of the continuously grated fiber, showing that it is suitable for applications with sensors in excess of 100m. Finally, we report on the fiber sensing characteristics by performing measurements of fiber bend using a fiber shape reconstruction algorithm on OFDR traces obtained from four of the fiber cores.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103236I (23 April 2017); doi: 10.1117/12.2263481
Show Author Affiliations
Paul S. Westbrook, OFS Labs. (United States)
Tristan Kremp, OFS Labs. (United States)
Kenneth S. Feder, OFS Labs. (United States)
Wing Ko, OFS Labs. (United States)
Eric M. Monberg, OFS Labs. (United States)
Hongchao Wu, OFS Labs. (United States)
Debra A. Simoff, OFS Fitel LLC (United States)
Scott Shenk, OFS Fitel LLC (United States)
Roy M. Ortiz, OFS Labs. (United States)

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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