基于双芯光子晶体光纤耦合微扰传感器

为了实现高精度温度传感的目的,设计了一种新型双芯光子晶体光纤耦合微扰传感结构,采用有限差分光束传播法对该结构的传感特性进行了分析.利用RSOFT软件的Beampronp模块对该传感器特性进行了仿真研究.结果表明,在满足双芯耦合条件下,折射率灵敏度可达7000nm/RUI;耦合间距灵敏度可达2;在填充液体为乙醇时,该传感...

Dual-core photonic crystal fiber sensor based on coupling perturbation

In order to achieve the purpose of high-precision temperature sensing, a novel dual-core photonic crystal fiber coupled perturbation structure was designed. The finite-difference beam propagation method was used to analyze the sensing characteristics of the structure. The Beampronp module of RSOFT software was used to simulate the characteristics of the sensor. The results show that the refractive index sensitivity can reach 7000nm/RUI under the condition of dual core coupling (RUI is the refractive index unit), the coupling spacing sensitivity can reach 2. When the liquid is filled with ethanol, the sensing structure can realize the detection in the temperature range of 278K~338K, and the sensitivity in this range can be up to 4nm/K. The sensor has the characteristics of high linearity and simple process, and the structure is helpful and meaningful to the research of other related sensors.