%0 Journal Article
%T 基于游标效应的飞秒激光直写波导温度传感器
Femtosecond Laser Direct Writing Waveguide Temperature Sensor Based on Vernier Effect
%A 陶天龙
%A 刘书辉
%A 柯志宏
%A 王子杰
%J Journal of Sensor Technology and Application
%P 200-210
%@ 2331-0243
%D 2025
%I Hans Publishing
%R 10.12677/jsta.2025.132020
%X 本文提出了一种基于游标效应的飞秒激光直写波导温度传感器。通过利用飞秒激光直写波导技术，在单模光纤(SMF)中制备了两个自由光谱范围(FSR)相近的马赫–曾德尔干涉仪(MZI)。光纤内的波导能够将光纤芯内传输的光耦合出来，并引导其沿着包层传输，最终再耦合回纤芯。波导内传输的光与纤芯内传输的光发生干涉，形成马赫–曾德尔干涉仪(MZI)。通过级联两个MZI，利用游标效应实现了温度灵敏度的放大。在进行传感MZI和级联传感器的温度实验后，发现传感器的温度灵敏度由−17.9 pm/℃提升至−94.6 pm/℃，灵敏度放大因子为5.2。该传感器具有结构紧凑、鲁棒性强的特点，展现出广泛的应用前景。
This article proposes a femtosecond laser direct writing waveguide temperature sensor based on the vernier effect. Two Mach Zehnder interferometers (MZIs) with similar free spectral range (FSR) were fabricated in a single-mode fiber (SMF) using femtosecond laser direct writing waveguide technology. Light propagating in the fiber core is coupled out partially to the waveguide and traveling along a path in the fiber cladding region before being coupled back into the fiber core, thus forming an MZI. And temperature sensitivity amplification was achieved by cascading two MZIs to generate a vernier effect. Temperature experiments were conducted on both MZI and cascaded sensors, and the temperature sensitivity of the sensors was amplified from −17.9 pm/˚C to −94.6 pm/˚C, with an amplification factor of 5.2. Such a sensor has a compact structure, good robustness, and broad application prospects.
%K 飞秒激光刻波导，
%K 马赫–
%K 曾德尔干涉仪，
%K 游标效应
Femtosecond Laser Direct Writing
%K Temperature Sensor
%K Vernier Effect
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=109997