Side-polished SMS based RI sensor employing macro-bending perfluorinated POF  

作　　者：Xuezhi Zhang Boyue Yang Junfeng Jiang Kun Liu Xiaojun Fan Zhaozhu Liu Min Peng Guanlong Chen Tiegen Liu 

机构地区：[1]School of Precision Instrument and Opto-Electronics Engineering,Tianjin University,Tianjin 300072,China [2]Tianjin Optical Fiber Sensing Engineering Center,Institute of Optical Fiber Sensing of Tianjin University,Tianjin 300072,China [3]Key Laboratory of Opto-electronics Information Technology(Tianjin University),Ministry of Education,Tianjin 300072,China

出　　处：《Opto-Electronic Advances》2021年第10期30-37,共8页光电进展（英文）

基　　金：supports in part by from the National key re-search and development plan of China(No.2016YFC0401902);in part by the National Natural Science Foundation of China(No.U1833104,No.61775163,No.61735011,No.61675152 and No.61405139).

摘　　要：A refractive index(RI)sensor based on perfluorinated plastic optical fiber(PF-POF)is introduced in this paper.The PF-POF as multi-mode fiber was side-polished(SP)to form a macro-bending single-mode-multimode-single-mode(SMS)structure.Both ends of the sensor were closely connected to single-mode quartz optical fiber(SMF).The spectral char-acteristics of the sensor are measured,analyzed and discussed.The results show that when the length of PF-POF is 8 cm,the macro-bending radius is 3 cm,and the SP-depth is 20μm.The intensity sensitivity reaches−219.504 dBm/RIU in the range of RI=1.330~1.356.A reference is provided for the application of PF-POF in RI sensor in the future.The sensor is featured with low-cost,good flexibility and high efficiency.

关 键 词：refractive index sensor perfluoropolymer fiber optical sensing plastic optical fiber 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]