干涉测量
光学
折射率
光子晶体光纤
材料科学
光纤布拉格光栅
光纤传感器
渐变折射率纤维
栅栏
光纤
温度测量
光电子学
物理
量子力学
作者
Dora Juan Juan Hu,Jun Long Lim,Jian Meng,Yixin Wang,Feng Luan,Perry Ping Shum,Huifeng Wei,Weijun Tong
出处
期刊:Optics Letters
[The Optical Society]
日期:2012-06-07
卷期号:37 (12): 2283-2283
被引量:111
摘要
We propose and demonstrate a novel and simple dual-parameter measurement scheme based on a cascaded optical fiber device of long-period grating (LPG) and photonic crystal fiber (PCF) modal interferometer. The temperature and refractive index (RI) can be measured simultaneously by monitoring the spectral characteristics of the device. The implemented sensor shows distinctive spectral sensitivities of -30.82 nm/RIU (refractive index unit) and 47.4 pm/°C by the LPG, and 171.96 nm/RIU and 10.4 pm/°C by the PCF modal interferometer. The simultaneous measurement of the temperature and external RI is experimentally demonstrated by the sensor. The temperature shift and RI shift calculated by the sensor matrix agree well with the actual temperature and RI change in the experiment.
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