Y. Ouyang, Jing Kong, Yimin Xu, Ai Zhou, Libo Yuan
{"title":"Simultaneous measurement of temperature and bend by using an eccentric core fiber Bragg grating cascaded with a Fabry-Perot cavity","authors":"Y. Ouyang, Jing Kong, Yimin Xu, Ai Zhou, Libo Yuan","doi":"10.1117/12.2264894","DOIUrl":null,"url":null,"abstract":"A simultaneous temperature and bend sensor based on an eccentric core fiber Bragg grating (ECFBG) cascaded with a Fabry-Perot cavity is presented and demonstrated. The hybrid structure is composed of a piece of hollow core fiber, which is sandwiched in between a piece of multimode fiber and an ECFBG. The curvature sensitivities of the ECFBG at the two opposite most sensitive directions are 52.2 pm/m<sup>−1</sup> and −51.7 pm/m<sup>−1</sup> respectively, and those of the FPI are 58.6pm/m<sup>−1</sup> and −61.4 pm/m<sup>−1</sup>, respectively. The temperature sensitivities of the two parts are very different. The temperature sensitivity of the ECFBG is 10.3 pm/°c, and that of the FPI is as low as 0.7 pm/°c.","PeriodicalId":198716,"journal":{"name":"2017 25th Optical Fiber Sensors Conference (OFS)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2017-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2017 25th Optical Fiber Sensors Conference (OFS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1117/12.2264894","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
A simultaneous temperature and bend sensor based on an eccentric core fiber Bragg grating (ECFBG) cascaded with a Fabry-Perot cavity is presented and demonstrated. The hybrid structure is composed of a piece of hollow core fiber, which is sandwiched in between a piece of multimode fiber and an ECFBG. The curvature sensitivities of the ECFBG at the two opposite most sensitive directions are 52.2 pm/m−1 and −51.7 pm/m−1 respectively, and those of the FPI are 58.6pm/m−1 and −61.4 pm/m−1, respectively. The temperature sensitivities of the two parts are very different. The temperature sensitivity of the ECFBG is 10.3 pm/°c, and that of the FPI is as low as 0.7 pm/°c.
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