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Opt Lett. 2003 Mar 15;28(6):387-9.

Two-axis bend measurement with Bragg gratings in multicore optical fiber.

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1
Department of Physics, Heriot-Watt University, Riccarton, Edinburgh EH14 4AS, UK. g.m.h.flockhart@hw.ac.uk

Abstract

We describe what is to our knowledge the first use of fiber Bragg gratings written into three separate cores of a multicore fiber for two-axis curvature measurement. The gratings act as independent, but isothermal, fiber strain gauges for which local curvature determines the difference in strain between cores, permitting temperature-independent bend measurement.

PMID:
12659255
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