Picture of person typing on laptop with programming code visible on the laptop screen

World class computing and information science research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.


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. (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
License: Unspecified

Download (604kB) | Preview


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.