Temperature sensing based on Lorentz resonance and Fano resonance excited in a thin-walled SiO2hollow microrod resonator  

作　　者：Binbin Yang Zhaofeng Kang Tianci Chen Jun Zhang Di Tang Lei Zhang Keyi Wang Yu Yang 杨彬彬;康朝烽;陈天赐;张军;唐荻;张磊;王克逸;杨煜

机构地区：[1]Department of Precision Machinery and Precision Instrumentation,University of Science and Technology of China,Hefei 230026,China [2]School of Electrical Engineering and Automation,Hefei University of Technology,Hefei 230009,China

出　　处：《Chinese Optics Letters》2025年第1期42-47,共6页中国光学快报(英文版)

基　　金：supported by the Fundamental Research Funds for the Central Universities(Nos.JZ2023HGQA0106 and JZ2023HGTA0199);the Anhui Provincial Natural Science Foundation(No.2308085QF208)。

摘　　要：A highly sensitive temperature sensor was developed using a thin-walled Si O2hollow microrod resonator(SHMR)to excite Lorentz resonance and Fano resonance.The SHMR has a high Q factor(3.16×10^(7))and concise resonance modes.Moreover,the SHMR has a small wall thickness,which can effectively improve the sensitivity of the temperature sensor.The experimental results show that the sensitivity reaches 24.78 pm/℃under Lorentz resonance and further improves to 31.28 pm/℃under Fano resonance.By further reducing the wall thickness of the SHMR,the sensitivity under Lorentz resonance is increased to 34.34 pm/℃.The sensor in this study has the advantages of low cost,simple structure,high sensitivity,and satisfactory repeatability.

关 键 词：whispering-gallery-mode microresonator whispering-gallery-mode spectral simplification Lorentz resonance Fano resonance temperature sensing:high sensitivity sensing 

分 类 号：TN65[电子电信—电路与系统]