Numerical simulation of a neotype fluidic sensing system based on side-polished optical fiber  

作　　者：LIU Yu XIA Bing-qing TAN Hua-yong LU Yong-le DI Ke SONG Ming-xia CHEN Hang ZHANG Yu-lin GUO Jun-qi 刘宇;夏冰清;谭华勇;路永乐;邸克;宋明霞;陈航;张钰琳;郭俊启(Chongqing Municipal Key Laboratory of Photoelectronic Information Sensing and Transmitting Technology,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]Chongqing Municipal Key Laboratory of Photoelectronic Information Sensing and Transmitting Technology,Chongqing University of Posts and Telecommunications,Chongqing 400065,China

出　　处：《Optoelectronics Letters》2020年第4期262-267,共6页光电子快报（英文版）

基　　金：supported by the National Key R&D Program of China(Nos.2018YFF01010202 and 2018YFF01010201);the National Natural Science Foundation of China(Nos.61705027 and 11704053);the Government of the Russian Federation(No.08-08);the Innovation Leader Talent Project of Chongqing Science and Technology(No.CSTC-CXLJRC201711);the Basic Research Project of Chongqing Science and Technology Commission(Nos.CSTC-2017csms A40017 and CSTC-2018jcyjax0619);the Science and Technology Project Affiliated to the Education Department of Chongqing Municipality(Nos.KJZH17115 and KJQN201800626)。

摘　　要：Theoretical design of a neotype fluidic controlling sensor system based on side-polished optical fiber is proposed.Numerical investigations demonstrate that the higher birefringence and resonance coupling can be achieved by flexible design of the polishing shape and depth in the research wavelength.The fluidic system is beneficial to selective integration of functional materials.The material is integrated into the fluidic system,which can achieve a birefringence up to 6.98×10^-5,and the application of Sagnac thermometer in temperature sensing is studied,and a group of dips with different temperature sensitivities would be observed in the transmission spectra,which is about 1.6 nm/℃by calculating.furthermore,by introducing resonant coupling,single mode single polarization at 1310 nm is realized.The refractive index(RI)response of the sensing system for a low Grange of 1.39-1.37 is approximately linear,and exhibits a sensitivity of 6338 nm/RlU.The results show that the proposed neotype fluidic controlling system can be used as a flexible polarization filter or as a potential two-parameter sensor.

关 键 词：POLARIZATION FIBER optical 

分 类 号：TN253[电子电信—物理电子学] TP212[自动化与计算机技术—检测技术与自动化装置]