{"title":"Simultaneous measurement of curvature and temperature based on two waist-enlarged fiber tapers and a fiber Bragg grating","authors":"Q. Meng, Xinyong Dong, Zhemin Chen, K. Ni","doi":"10.1109/PGC.2012.6457995","DOIUrl":null,"url":null,"abstract":"A fiber sensor scheme for simultaneous measurement of curvature and temperature is presented. The sensor head is formed by combining a fiber Bragg grating (FBG) with a all-fiber Mach-Zehnder interferometer (MZI), which is formed by cascading two waist-enlarged fiber tapers. The MZI is sensitive to curvature and surrounding temperature, while the FBG is only sensitive to the later. As a result, simultaneous measurement of curvature and temperature can be achieved by monitoring wavelength shifts of the MZI and the FBG. Sensitivities of 6.75 nm/m-1 and 54.7 pm/°C are achieved experimentally for curvature and temperature measurements, respectively. This sensor has a compact configuration, because the FBG is inset into the MZI. Furthermore, the sensor also has the advantages of low-cost fabrication process and good physical strength.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2012 Photonics Global Conference (PGC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PGC.2012.6457995","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 fiber sensor scheme for simultaneous measurement of curvature and temperature is presented. The sensor head is formed by combining a fiber Bragg grating (FBG) with a all-fiber Mach-Zehnder interferometer (MZI), which is formed by cascading two waist-enlarged fiber tapers. The MZI is sensitive to curvature and surrounding temperature, while the FBG is only sensitive to the later. As a result, simultaneous measurement of curvature and temperature can be achieved by monitoring wavelength shifts of the MZI and the FBG. Sensitivities of 6.75 nm/m-1 and 54.7 pm/°C are achieved experimentally for curvature and temperature measurements, respectively. This sensor has a compact configuration, because the FBG is inset into the MZI. Furthermore, the sensor also has the advantages of low-cost fabrication process and good physical strength.
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