首页|Refractive index and temperature optical fiber sensor based on thin core S-taper and spherical structure
Refractive index and temperature optical fiber sensor based on thin core S-taper and spherical structure
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维普
A Mach-Zehnder interferometer(MZI)for simultaneously measuring refractive index(RI)and temperature is pro-posed and verified in this paper.The sensor head is composed of thin core fiber(TCF)S-taper structure and spherical structure.By monitoring two interference dips,experimental results show that the RI sensitivities are-70.392 nm/RIU and-60.08 nm/RIU in the RI range of 1.338 4-1.350 0,respectively.And the temperature sensitivities are 0.050 72 nm/℃and 0.071 7 nm/℃in the temperature range of 30-70℃,respectively.The simultaneous measure-ment of the temperature and external RI is demonstrated based on the sensitive matrix.The sensor also has the advan-tages of low cost,simple structure and high sensitivity.
YANG Fan、CAO Ye、LI Meiqi、JU Hui、LI Lijun
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School of Electronic and Information,Qingdao University,Qingdao 266071,China
College of Electronic Information Engineering,Shandong University of Science and Technology,Qingdao 266590,China
国家高技术研究发展计划(863计划)国家自然科学基金Municipal Natural Science Foundation of Tianjin
NETL
NSTL
万方数据
维普
