Ultrasensitive Strain Sensor Based on V-Groove Structure Long-Period Fiber Grating

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2024-12-20 DOI:10.1109/LPT.2024.3520812

Taian Yin;Xuelan He;Jing Yang;Yuan Jin;Yan Liu;Shan Gao;Peng Ye;Jinhui Shi;Libo Yuan;Chunying Guan

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引用次数: 0

Abstract

We propose and experimentally demonstrate an ultrasensitive strain sensor based on a V-groove structure long-period fiber grating (V-LPFG). The V-LPFG is fabricated by using CO2 laser to etch periodic V-groove structures on a standard single-mode fiber. Utilizing the periodic V-grooves, effectively enhancing the strain sensitivity of LPFG. The effect of different V-groove depths on the strain sensitivity of V-LPFG are discussed. The experiment results show that the sensitivity of strain is up to -229.1 pm/

$\mu \varepsilon $

. In addition, the temperature response of the sensor is measured and the temperature sensitivity is 80.18 pm/°C. Its temperature-strain cross-sensitivity is as low as -

$0.35\mu \varepsilon $

/°C. The proposed ultrasensitive strain sensor has the good potential applications in engineering health monitoring and precision measurement due to its low cost, small size, simple fabrication, and high sensitivity.

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.