Differential phase tracking applied to Bragg gratings in multicore fiber for high accuracy curvature measurement
Flockhart, Gordon M. H. and Cranch, Geoffrey A. and Kirkendall, Clay K.; Inaudi, D and Ecke, W and Culshaw, B and Peters, KJ and Udd, E, eds. (2006) Differential phase tracking applied to Bragg gratings in multicore fiber for high accuracy curvature measurement. In: Smart Structures and Materials 2006. Proceedings of the Society of Photo-Optical Instrumentation Engineers (SPIE) . SPIE, USA. (https://doi.org/10.1117/12.657576)
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Abstract
We report interferometric interrogation of fiber Bragg gratings in separate cores of a multicore fiber for high resolution quasi-static and dynamic bend measurements. Two axis curvature measurements are made by measuring the differential strain between three FBG sensors formed in a singlemode four-core fiber using a common interrogating interferometer. Therefore a measurement of the differential phase from each FBG yields the differential strain and compensates for the common-mode random drift of the interrogating interferometer. A DC curvature accuracy of 3.4 x 10(-3) m(-1), and an AC curvature resolution of 1.2 x 10(-4) m(-1)/Hz(1/2) are reported.
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Item type: Book Section ID code: 48770 Dates: DateEvent2006PublishedNotes: Smart Structures and Materials 2006 Conference, San Diego, CA, FEB 27-MAR 02, 2006 Subjects: Technology > Electrical engineering. Electronics Nuclear engineering Department: Faculty of Engineering > Electronic and Electrical Engineering
Technology and Innovation Centre > Sensors and Asset ManagementDepositing user: Pure Administrator Date deposited: 24 Jun 2014 15:09 Last modified: 22 Jul 2024 01:25 URI: https://strathprints.strath.ac.uk/id/eprint/48770