Refractive index sensors based on the fused tapered special multi-mode fiber

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• 作者：Xing-hu Fu 付兴虎 ; Yan-li Xiu 修艳丽 ; Qin Liu 刘琴 ; Hai-yang Xie 谢海洋…
• 刊名：Optoelectronics Letters
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：12
• 期：1
• 页码：12-15
• 全文大小：541 KB
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• 作者单位：Xing-hu Fu 付兴虎 (1) (2)
  Yan-li Xiu 修艳丽 (1)
  Qin Liu 刘琴 (1)
  Hai-yang Xie 谢海洋 (1)
  Chuan-qing Yang 杨传庆 (1)
  Shun-yang Zhang 张顺杨 (1)
  Guang-wei Fu 付广伟 (1) (2)
  Wei-hong Bi 毕卫红 (1) (2)
  
  1. School of Information Science and Engineering, Yanshan University, Qinhuangdao, 066004, China
  2. The Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province, Qinhuangdao, 066004, China
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Applied Optics, Optoelectronics and Optical Devices
  Chinese Library of Science
  
• 出版者：Tianjin University of Technology, co-published with Springer-Verlag GmbH
• ISSN：1993-5013

文摘

In this paper, a novel refractive index (RI) sensor is proposed based on the fused tapered special multi-mode fiber (SMMF). Firstly, a section of SMMF is spliced between two single-mode fibers (SMFs). Then, the SMMF is processed by a fused tapering machine, and a tapered fiber structure is fabricated. Finally, a fused tapered SMMF sensor is obtained for measuring external RI. The RI sensing mechanism of tapered SMMF sensor is analyzed in detail. For different fused tapering lengths, the experimental results show that the RI sensitivity can be up to 444.517 81 nm/RIU in the RI range of 1.334 9—1.347 0. The RI sensitivity is increased with the increase of fused tapering length. Moreover, it has many advantages, including high sensitivity, compact structure, fast response and wide application range. So it can be used to measure the solution concentration in the fields of biochemistry, health care and food processing. This work has been supported by the National Natural Science Foundation of China (Nos.61205068 and 61475133), the Hebei Province Science and Technology Support Program (Nos.15273304D and 14273301D), the College Youth Talent Project of Hebei Province (No.BJ2014057), the “XinRuiGongCheng” Talent Project and the Excellent Youth Funds for School of Information Science and Engineering in Yanshan University (No.2014201).