光电工程, 2013, 40 (1): 72, 网络出版: 2013-01-16
HCPCF端面塌陷成腔工艺的 F-P应变传感器
The HCPCF F-P Strain Sensor Based on the Technology of Collapse into the Cavity
光纤传感器 光子晶体光纤 法布里 -珀罗干涉仪 应变 fiber-optic sensor photonic crystal fiber Fabry-Perot interferometer strain
摘要
本文提出了一种新型测量应变的空芯光子晶体光纤 (HCPCF)法布里-珀罗(F-P)干涉传感器，HCPCF的一端与单模光纤熔接形成反射面 1，另一端在熔接机内通过电极放电使端面完全塌陷形成反射面 2，构成以 HCPCF为腔体的新型 F-P干涉传感器。实验结果表明，腔长 2 mm的传感器在室温下的应变灵敏度为 3.1 nm/με，线性度为0.999 2，极限腔长改变量为 3 827.3 nm。温度在 0~150 ℃的温度变化范围内，腔长的改变量约为 0.17 μm。理论和实验结果表明该新型传感器具有制作工艺简单、应变灵敏度高、温度灵敏度低和没有迟滞现象等优点。
Abstract
A new kind of strain measurement Hollow-core Photonic Crystal Fiber (HCPCF) Fabry-Perot (F-P) interferometer sensor is presented. One end of the HCPCF is fused with the single-mode fiber to form the reflecting surface 1. The other end of HCPCF completely collapses to form the reflecting surface 2 by the electrode discharge in the welding machine. So the new F-P interferometer sensor with HCPCF cavity is constituted. The experimental results show that the strain sensitivity of the sensor cavity length of 2 mm at room temperature is 3.1 nm/με, the linearity is 0.999 2 and limit cavity length change is 3 827.3 nm. In the range of 0 ~ 150 ℃, the change of cavity length is about 0.17 μm. Theoretical and experimental results show that the new sensor has a simple fabrication process, high strain sensitivity, low temperature sensitivity and no hysteresis.
张燕君, 刘双柱, 苏玉玲. HCPCF端面塌陷成腔工艺的 F-P应变传感器[J]. 光电工程, 2013, 40(1): 72. ZHANG Yan-jun, LIU Shuang-zhu, SU Yu-ling. The HCPCF F-P Strain Sensor Based on the Technology of Collapse into the Cavity[J]. Opto-Electronic Engineering, 2013, 40(1): 72.
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