BN/SiBCN light-leakage-proof coatings of silica optical fiber for long term sensors at high temperatures

作     者：Xin’gang LUAN Xinming XU Rong YU Qiqi ZHANG Sam ZHANG Laifei CHENG Xin'gang LUAN;Xinming XU;Rong YU;Qiqi ZHANG;Sam ZHANG;Laifei CHENG

作者机构：Science and Technology on Thermo Structural Composite Materials LaboratoryNorthwestern Poly technical UniversityXian 710072China Faculty of Materials and EnergySouthwest UniversityChong Qing 400715China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2021年第34卷第5期

页      面：93-102页

核心收录：

学科分类：080202[工学-机械电子工程] 08[工学] 0802[工学-机械工程] 0825[工学-航空宇航科学与技术] 0801[工学-力学（可授工学、理学学位）] 

基　　金：co-supported by the National Natural Science Foundation of China(No.91960105,91860140) the National Basic Research Program of China(973 Program) the Open Fund of the State Key Laboratory on Integrated Optoelectronics,China(No.IOSKL2018KF05) the Fundamental Research Funds for the Central Universities(No.SWU118105) 

主　　题：BN/SiBCN double coating High temperature Optical fiber Sensor Silica 

摘      要：SiBCN and BN/SiBCN light-leakage-proof coatings were prepared on silica optical fibers for sensing applications at high *** electron microscopy was used to characterize the surface morphology and microstructure of the coated *** and optical properties of the coated fiber were characterized by Raman,optical and tensile *** with the original fiber,the tensile strength of Si BCN and BN/Si BCN coated fiber show an increase of about 60%and 90%at room temperature,*** addition,the tensile strength of BN/Si BCN coated silica optical fiber was increased by about 42%at 700°*** has been found that the improvement of the strength of BN/Si BCN coated silica optical fiber is related to the healing of defects and residual compressive stress in *** the light transmittance performance of the coated fiber,it was found that BN/Si BCN double coating could be an ideal total reflection solution to protect silica optical fiber from light leakage during high temperature sensing operation.