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Sensitivity Enhanced Rsefractive Index Sensor with In-Line Fiber Mach-Zehnder Interferometer Based on Double-Peanut and Er-Doped Fiber Taper Structure
Zhao, Fang1; Xiao, Dongrui1; Lin, Weihao1,3; Chen, Yun1; Wang, Guoqing1; Hu, Jie1; Liu, Shuaiqi1,3; Yu, Feihong1; Xu, Weijie1; Yang, Xiaolu2; Yibin, Liu1; Shao, Li Yang1,4; Shum, Perry Ping1; Wang, Weizhi3
2022-01
Source PublicationJournal of Lightwave Technology
ISSN0733-8724
Volume40Issue:1Pages:245-251
Abstract

A fiber-optic Mach Zehnder interferometer (MZI) refractive index (RI) sensor based on a double peanut-shaped structure in Er-doped fiber with a section of tapered fiber was fabricated using fusion splicer and experimentally demonstrated. The double peanut-shaped structures placed at both ends of the sensor function as beam splitting/combining. Besides, the tapered region works as the sensing area. With RI changes, the optical path difference between the core mode and the cladding modes will change correspondingly, resulting in interference spectrum shifting. By monitoring the shift, the measured RI can be obtained. The experimental results show that the RI sensitivity was significantly improved compared with other types of peanut-shaped fiber sensors. By comparing different taper diameters, it is found that the finer the tapered fiber, the higher the sensitivity of measuring RI.High RI sensitivity of 441.56 nm/RIU is obtained in the experiments. Compared with the similar-structure sensor consisted of single-mode fiber (SMF), the sensitivity of the proposed sensor based on Er-doped fiber is 115.22 nm/RIU higher than that of the former. The proposed sensor has the characteristics of a compact structure. In addition, it has potential in environmental, medical, and aerospace monitoring applications.

KeywordMzi Peanut-shaped Structure Refractive Index Measurement Tapered Er-doped Fiber
DOI10.1109/JLT.2021.3118285
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering ; Optics ; Telecommunications
WOS SubjectEngineering, Electrical & Electronic ; Optics ; Telecommunications
WOS IDWOS:000735514700029
Scopus ID2-s2.0-85119606334
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Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorShao, Li Yang
Affiliation1.Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China
2.Department of Mathematics and Physical Sciences, University of Exeter Stocker Rd, Exeter, United Kingdom
3.Peng Cheng Laboratory, Shenzhen, China
4.Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, 999078, Macao
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Zhao, Fang,Xiao, Dongrui,Lin, Weihao,et al. Sensitivity Enhanced Rsefractive Index Sensor with In-Line Fiber Mach-Zehnder Interferometer Based on Double-Peanut and Er-Doped Fiber Taper Structure[J]. Journal of Lightwave Technology,2022,40(1):245-251.
APA Zhao, Fang,Xiao, Dongrui,Lin, Weihao,Chen, Yun,Wang, Guoqing,Hu, Jie,Liu, Shuaiqi,Yu, Feihong,Xu, Weijie,Yang, Xiaolu,Yibin, Liu,Shao, Li Yang,Shum, Perry Ping,&Wang, Weizhi.(2022).Sensitivity Enhanced Rsefractive Index Sensor with In-Line Fiber Mach-Zehnder Interferometer Based on Double-Peanut and Er-Doped Fiber Taper Structure.Journal of Lightwave Technology,40(1),245-251.
MLA Zhao, Fang,et al."Sensitivity Enhanced Rsefractive Index Sensor with In-Line Fiber Mach-Zehnder Interferometer Based on Double-Peanut and Er-Doped Fiber Taper Structure".Journal of Lightwave Technology 40.1(2022):245-251.
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