Abstract
In this paper, we present a wide range displacement sensor system using
the fiber Bragg grating (FBG), spring, and a twin-core fiber. The
quantitative analysis of the theory of the cascaded FBG–spring system
for displacement measurement is introduced together with the basic working
principle of a twin-core fiber filter. The feasibility of the method is
demonstrated in experiments which shows the output optical intensity linear
relation with the displacement. The characteristics of the wide range, high
resolution, low cost, and compact scheme would make this method more
applicable.
© 2011 IEEE
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