Abstract
The curvature sensor, which consists of wrapping the coreless D-shaped optical fiber in polydimethylsiloxane (PDMS) film is experimentally proposed. High-sensitive curvature measurements are achieved with sensitivities of 2.04 dB/m−1 and 2.66 dB/m−1 in the X+ and X− direction, respectively. Moreover, the proposed sensor demonstrates a low temperature dependence of 0.025 dB/°C.
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