A novel all-fiber micro-displacement sensor based on long period grating and tip structure

Abstract

A novel high sensitivity all-fiber micro-displacement sensor is proposed and experimentally demonstrated. This sensor consists of a long period fiber gating and a fiber tip, which is achieved only by a commercial arc discharge fusion splicer, and thus possesses a lower cost. The wavelength sensitivity of the proposed sensor could be up to 934 pm/μm, which is four times higher than that of the long period fiber grating (LPFG) with an air cavity structure. The intensity change sensitivity is −1.973 dB/μm.

Keywords

Peak Wavelength / Photonic Crystal Fiber / IEEE Photon / Displacement Sensor / Single Mode Fiber

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