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Differential phase tracking applied to Bragg gratings in multi-core fibre for high accuracy curvature measurement

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3 Author(s)
Flockhart, G.M.H. ; SFA Inc., Crofton, MD, USA ; Cranch, G.A. ; Kirkendall, C.K.

High resolution quasi-static and dynamic curvature measurements are made by differential interferometric phase measurement of fibre Bragg gratings in separate cores of a multi-core fibre. A DC curvature stability of 1×10-3m-1 and an AC curvature resolution of 1×10-4 m-1/Hz12/ are reported.

Published in:

Electronics Letters  (Volume:42 ,  Issue: 7 )