High-sensitivity temperature sensor based on an optoelectronic oscillator

被引：32
|
作者：
Zhu, Yanhong [1 ]
Jin, Xiaofeng [1 ]
Chi, Hao [1 ]
Zheng, Shilie [1 ]
Zhang, Xianmin [1 ]
机构：
[1] Zhejiang Univ, Dept Informat & Elect Engn, Hangzhou 310027, Zhejiang, Peoples R China
来源：
APPLIED OPTICS | 2014年 / 53卷 / 22期
关键词：
D O I：
10.1364/AO.53.005084
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A high-sensitivity temperature sensor based on an optoelectronic oscillator (OEO) is proposed and experimentally demonstrated. The shift of the oscillation frequency in the OEO is inversely proportional to the variation of temperature. An injection-locking method is employed to set up the initial oscillation frequency of the sensor to overcome the uncertainty of the initial oscillation frequency. The experiment results show that high sensitivity of 43.91 kHz/degrees C with an accuracy of +/- 0.12 degrees C is achieved between 20 degrees C and 240 degrees C. The system features high temperature sensitivity, wide dynamic range, and high reliability. (C) 2014 Optical Society of America
引用
收藏
页码：5084 / 5087
页数：4
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