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We propose and experimentally demonstrate an approach to perform high-resolution and temperature-insensitive interrogation of a fiber Bragg grating (FBG)-based multicore fiber (MCF) curvature sensor using a microwave photonics filtering technique. By combining two reflected sample signals from the two FBGs inscribed in MCF and a dispersion device, a two-tap notch microwave photonic filter (MPF) is...
A high-resolution and temperature-insensitive interrogation scheme for fiber Bragg grating (FBG) based multicore fiber curvature sensor using microwave photonics filtering techniques is proposed and verified by experimental demonstration. The principle of operation exploited for curvature interrogation is based on monitoring the notch frequency shift of a two-tap microwave photonics filter (MPF),...
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