Differential phase tracking applied to Bragg gratings in multi-core fibre for high accuracy curvature measurement |
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| Authors: | Flockhart G.M.H. Cranch G.A. Kirkendall C.K. |
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| Affiliation: | SFA Inc., Crofton, MD, USA; |
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| Abstract: | 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/spl times/10/sup -3/m/sup -1/ and an AC curvature resolution of 1/spl times/10/sup -4/ m/sup -1//Hz/sup 1/2/ are reported. |
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