Flockhart, Gordon M. H. and Cranch, Geoffrey A. and Kirkendall, Clay K. (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, Bellingham.
PDF (Flockhart SPIE 6167 2006)
Flockhart_Differential_phase_tracking_applied_to_BG_in_MCF_for_high_accuracy_curvature_measurement_SPIE_6167_2006.pdf - Final Published Version
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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.
|Item type:||Book Section|
|Notes:||Smart Structures and Materials 2006 Conference, San Diego, CA, FEB 27-MAR 02, 2006|
|Keywords:||phase tracking, multicore, optical fiber sensor, fiber Bragg grating, interterometry, curvature measurement, Bragg gratings, Electrical engineering. Electronics Nuclear engineering, Electrical and Electronic Engineering|
|Subjects:||Technology > Electrical engineering. Electronics Nuclear engineering|
|Department:||Faculty of Engineering > Electronic and Electrical Engineering
Technology and Innovation Centre > Sensors and Asset Management
|Depositing user:||Pure Administrator|
|Date Deposited:||24 Jun 2014 15:09|
|Last modified:||21 Apr 2017 18:02|