Bend Sensor Based on Mach-Zehnder Interferometer Using Single-Mode Fiber With Helical Structure

Xuelan He,Jian Zhou,Chao Ma,Wenchao Li,Jing Yang,Xianbin Wang,Chunying Guan,Yuxin Zhao,Libo Yuan

IEEE Photonics Technology Letters（2022）

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摘要

An all-fiber bend sensor based on Mach-Zehnder interferometer (MZI) is proposed and experimentally demonstrated. The fiber interferometer consists of two helical structures in single mode fiber (SMF) and is fabricated by continuous arc discharge technique. The first helical structure forms a twisted long-period fiber grating (LPFG) to excite the higher-order cladding modes and acts as a beam split...

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关键词

Optical fiber sensors,Optical fibers,Sensitivity,Bending,Robot sensing systems,Fabrication,Temperature sensors

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