{"title":"Photonic crystal fiber Mach-Zehnder interferometric refractive index sensor","authors":"P. Dhara, V. K. Singh","doi":"10.1109/WRAP.2013.6917720","DOIUrl":null,"url":null,"abstract":"A simple photonic crystal fiber (PCF) based Mach-Zehnder interferometric sensor is fabricated for sensing the Refractive index. The sensing head is formed by all-fiber in-line singlemode - multimode - photonic crystal - singlemode fiber structure, using the fusion splicing method. The fully collapse air holes of PCF make the coupling of the core and cladding mode in the splicing region which establish a Mach-Zehnder interferometer. The multimode fiber is used as a mode coupler. The intensity of output at the end of lead-out single mode fiber varies decreasing manner with increasing refractive index. Photonic crystal fiber sensors with length 5.5 cm exhibit refractive index sensing at 1550nm. . It is shown analytically that the intensity of output at the end of lead-out single mode fiber varies sinusoidally with the relative phase difference between core and cladding mode.","PeriodicalId":386455,"journal":{"name":"Workshop on Recent Advances in Photonics (WRAP)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Workshop on Recent Advances in Photonics (WRAP)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/WRAP.2013.6917720","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
A simple photonic crystal fiber (PCF) based Mach-Zehnder interferometric sensor is fabricated for sensing the Refractive index. The sensing head is formed by all-fiber in-line singlemode - multimode - photonic crystal - singlemode fiber structure, using the fusion splicing method. The fully collapse air holes of PCF make the coupling of the core and cladding mode in the splicing region which establish a Mach-Zehnder interferometer. The multimode fiber is used as a mode coupler. The intensity of output at the end of lead-out single mode fiber varies decreasing manner with increasing refractive index. Photonic crystal fiber sensors with length 5.5 cm exhibit refractive index sensing at 1550nm. . It is shown analytically that the intensity of output at the end of lead-out single mode fiber varies sinusoidally with the relative phase difference between core and cladding mode.