镀金表面光子晶体光纤温度传感特性仿真分析  

Simulation Analysis of Temperature Sensing Characteristics of Photonic Crystal Fiber with Gold Plated Surface

作　　者：杨松岩 何巍[1] 张钰民 刘砚涛[2] 马思琪 杨竞泽 YANG Songyan;HE Wei;ZHANG Yumin;LIU Yantao;MA Siqi;YANG Jingze(Beijing Engineering Research Center of Optoelectronic Information and Instruments,Beijing Information Science and Technology University,Beijing 100192,China;Beijing Institute of Intensity Environment,Beijing 100076,China)

机构地区：[1]北京信息科技大学光电信息与仪器北京市工程研究中心,北京100192 [2]北京强度环境研究所,北京100076

出　　处：《光通信研究》2024年第4期51-56,共6页Study on Optical Communications

基　　金：国家自然科学基金资助项目(52105540);高等学校学科创新引智计划资助项目(D17021);北京市自然基金-市教委联合基金资助项目(KZ201911232044)。

摘　　要：【目的】针对表面等离子体共振(SPR)光子晶体光纤(PCF)温度传感器制作难度较大的问题,文章提出了一种D型结构PCF温度传感器,对其空气孔微结构及排布进行了设计,并采用在光纤抛光表面涂覆金层的方法来激发光纤SPR。【方法】采用乙醇作为温敏材料,将温敏效应作为温度传感机制,达到温度传感的效果。采用有限元分析方法分别对金层厚度和光纤椭圆空气孔尺寸进行仿真,分析不同条件下纤芯模式与表面等离子模式之间的耦合特性,优化传感器结构。【结果】对传感器温度特性进行仿真,在-80~80℃范围内,传感器温度灵敏度为3.4 nm/℃,线性度优于0.96963。【结论】文章所设计的温度传感器具有较宽的温度检测范围和良好的灵敏度与线性度,可应用于工业、农业和医学等领域的温度实时监测。【Objective】In order to solve the problem that it is difficult to make the temperature sensor of the Photonic Crystal Fiber(PCF)with Surface Plasma Resonance(SPR),a D-structure PCF temperature sensor is proposed.The micro-structure and arrangement of the air hole are also designed.The method of coating the polishing surface of the optical fiber with gold layer is used to stimulate the SPR of the optical fiber.【Methods】Ethanol is used as a temperature-sensitive material,and the temperature-sensitive effect is used as the temperature sensing mechanism to achieve the effect of temperature sensing.The finite element analysis method is used to simulate the thickness of the gold layer and the size of the elliptical air hole of the fiber respectively.The coupling characteristics between the core mode and the surface plasma mode are analyzed under different conditions,and the structure of the sensor is optimized.【Results】The temperature characteristics of the sensor are simulated.In the range of-80~80℃,the sensitivity of the sensor is 3.4 nm/℃,and the linearity is better than 0.96963.【Conclusion】The temperature sensor designed in this paper has a wide temperature detection range,satisfactory sensitivity,and linearity,which can be used for real-time temperature monitoring in industrial,agricultural,and medical fields.

关 键 词：温度传感器 光子晶体光纤 表面等离子体共振 有限元法 

分 类 号：TN256[电子电信—物理电子学]