Performance characteristics of continuously grated multicore sensor fiber

Paul S. Westbrook; Tristan Kremp; Kenneth S. Feder; Wing Ko; Eric M. Monberg; Hongchao Wu; Debra A. Simoff; Scott Shenk; Roy M. Ortiz

doi:10.1117/12.2263481

23 April 2017 Performance characteristics of continuously grated multicore sensor fiber

Paul S. Westbrook, Tristan Kremp, Kenneth S. Feder, Wing Ko, Eric M. Monberg, Hongchao Wu, Debra A. Simoff, Scott Shenk, Roy M. Ortiz

Author Affiliations +

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103236I (2017) https://doi.org/10.1117/12.2263481
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

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.

Citation Download Citation

Paul S. Westbrook, Tristan Kremp, Kenneth S. Feder, Wing Ko, Eric M. Monberg, Hongchao Wu, Debra A. Simoff, Scott Shenk, and Roy M. Ortiz "Performance characteristics of continuously grated multicore sensor fiber", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103236I (23 April 2017); https://doi.org/10.1117/12.2263481

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