Chong Niu;Xiaoyang Li;Jiabin Wang;Jiarui Chen;Yanru Kou;Xinyu Yang;Chunlian Lu;Tao Geng;Weimin Sun
{"title":"Sensitivity-Adjustable Strain Sensor Based on Shrinking Long Period Fiber Grating","authors":"Chong Niu;Xiaoyang Li;Jiabin Wang;Jiarui Chen;Yanru Kou;Xinyu Yang;Chunlian Lu;Tao Geng;Weimin Sun","doi":"10.1109/LPT.2024.3432912","DOIUrl":null,"url":null,"abstract":"In this letter, a novel shrinking long period fiber grating (S-LPFG) is designed. This strain sensor is fabricated through mechanical polishing and arc-discharging, allowing for certain control over its sensitivity to strain. The single-mode fiber (SMF) is first preprocessed into a D-shaped fiber (DSF) through polishing. Then, a periodic melting-induced shrinking is applied to the fiber through arc-discharging modulation. The polishing and shrinking enhance the asymmetry of the single-mode fiber. The discharge modulation enables convenient control of the mode order coupling efficiency and the shrinking level of the sensor, thereby effectively controlling and improving the strain sensitivity. The experimental results indicate that strain sensors with three levels of sensitivity, namely high, medium, and low sensitivity, are obtained by controlling the number of discharges. The high strain sensitivity reaches an ultra-high value of 174 pm/\n<inline-formula> <tex-math>$\\mu \\varepsilon $ </tex-math></inline-formula>\n within the range of \n<inline-formula> <tex-math>$0- 100 \\; \\mu \\varepsilon $ </tex-math></inline-formula>\n. These adjustable sensitivity sensors have great potential for various application scenarios.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Photonics Technology Letters","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10608048/","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
In this letter, a novel shrinking long period fiber grating (S-LPFG) is designed. This strain sensor is fabricated through mechanical polishing and arc-discharging, allowing for certain control over its sensitivity to strain. The single-mode fiber (SMF) is first preprocessed into a D-shaped fiber (DSF) through polishing. Then, a periodic melting-induced shrinking is applied to the fiber through arc-discharging modulation. The polishing and shrinking enhance the asymmetry of the single-mode fiber. The discharge modulation enables convenient control of the mode order coupling efficiency and the shrinking level of the sensor, thereby effectively controlling and improving the strain sensitivity. The experimental results indicate that strain sensors with three levels of sensitivity, namely high, medium, and low sensitivity, are obtained by controlling the number of discharges. The high strain sensitivity reaches an ultra-high value of 174 pm/
$\mu \varepsilon $
within the range of
$0- 100 \; \mu \varepsilon $
. These adjustable sensitivity sensors have great potential for various application scenarios.
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.