A Refractive Index Sensor Based on Four-Wave Mixing in D-Shaped Tellurite Photonic Crystal Fiber  

作　　者：Yuanhongliu GAO Xin YAN Xiaoyu CHEN Bin LI Tonglei CHENGCollege of Information Science and Engineering State Key Laboratory of Synthetical Automation for Process Industries 

机构地区：[1]Northeastern University,Shenyang 110819,China

出　　处：《Photonic Sensors》2023年第3期90-98,共9页光子传感器（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.61775032);the National Key Research and Development Program of China(Grant No.2017YFA0701200);the Fundamental Research Funds for the Central Universities(Grant Nos.N2104022 and N2004021);the China Postdoctoral Science Foundation(Grant No.2021M690563);the Natural Science Foundation of Science and Technology Department of Liaoning Province(Grant No.2020-BS-046);the Hebei Natural Science Foundation(Grant No.F2020501040);the 111 Project(Grant No.B16009).

摘　　要：In this study,we design a refractive index(RI)sensor using a novel cadmium telluride photonic crystal fiber(TPCF).Based on four-wave mixing(FWM),the changes in RI can be accurately detected,and RI sensing in the mid-infrared region(MIR)can be achieved by detecting wavelength shifts in the Stokes and anti-Stokes spectra caused by the changes in RI of the liquid to be measured.When the pump wavelength of FWM lies in the normal and abnormal dispersion regions of the TPCF,the RI response of the idler frequency wave and the signal wave are analyzed by numerical simulation methods.The simulation results show that the RI sensitivity of the sensor can be as high as 7692 nm/RIU with a linearity is up to 99.9%at the pump wavelength of 3380 nm.To our knowledge,the RI sensing sensitivity of the MIR is presented for the first time in this study by using FWM in the non-silicon PCF.

关 键 词：Refractive index sensing tellurite photonic crystal fiber parametric gain four wave mixing mid-infrared region 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]