第 42 卷 第 11 期
2015 年 11 月
Vol. 42, No. 11
November, 2015
中 国 激 光
CHINESE JOURNAL OF LASERS
1105001-
多通道自校准砷化镓吸收式光纤温度监测系统
胡 昆
1,2
傅惠南
1
罗星星
1,2
梅迎春
1
董玉明
2,3
1
广东工业大学机电工程学院, 广东 广州 510006
2
中国科学院深圳先进技术研究院, 广东 深圳 518055
3
香港中文大学, 香港 沙田 999077
摘要 光纤温 度传感器易 受到光源驱 动电流变化 、光路弯 曲、熔接损 耗等强度变 化因素影响,为解 决光强度变化导
致的测温偏差,系 统采用定时 更新原始入 射光谱,实 现光源波形 自校准。光 谱分析装置 易受环境温 度变化引起 光
谱漂移,为解决光谱漂移引起的测温偏差,系统采用波长锁定器定位特征波长,使用光谱漂移补偿的方法,实现光谱
自校准。为实现多通道光纤测温,设计了 光学复用系 统。设计自 校准验证实 验验证系统 自校准功能 的有效性,实
验结果表明,在系统使用环境发生变化时,自校准测温系统测量误差小于±1 ℃,因此设计的自校准测温系统能够抵
抗光源光谱波形变化带来的误差,克服光谱分析装置受环境温度的干扰。
关键词 光纤光学; 温度测量; 自校准; 多通道; 砷化镓
中图分类号 TN304.91 文献标识码 A
doi: 10.3788/CJL201542.1105001
Multi-Channels Self-Calibrating Gallium Arsenide Absorption Fiber
Optic Temperature Monitoring System
Hu Kun
1,2
Fu Huinan
1
Luo Xingxing
1,2
Mei Yingchun
1
Dong Yuming
2,3
1
School of Electromechanical Engineering, Guangdong University of Technology,
Guangzhou, Guangdong 510006, China
2
Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
3
The Chinese University of Hong Kong, Shatian, Hong Kong 999077, China
Abstract Fiber optic temperature sensors are accessibly affected by the light source drive current changes, the
optical path bending, the splice loss and other intensity variables. In order to solve the temperature deviation caused
by the light intensity variations, the system regularly updates the original incident spectrum to realize self-
calibration source waveform. The variation of ambient temperature causes the spectral drift of spectral analysis
device which causes the deviation of temperature measurement. To solve this problem, the system uses wavelength
locker to locate characteristic wavelength and uses spectral shift compensation method to achieve spectral self-
calibration. The optical multiplexing system is designed to achieve multi- channel fiber optic temperature
measurement. Self- calibration verification experiments are designed to verify the validity of the system self-
calibration function. Experimental results show that the system self-calibrating temperature measurement deviation
is less than ±1 ℃,when the environment changes. Therefore, the self-calibrating temperature measurement system
can withstand the deviation of source spectral waveform changes, and make the spectrum analysis device overcome
the interference of ambient temperature.
Key words fiber optics; temperature measurement; self-calibration; multi-channels; GaAs
OCIS codes 060.2300; 060.2370; 060.2330
收稿日期: 2015-06-01; 收到修改稿日期: 2015-06-26
基金项目: 深圳市重大产业公关项目基金(SY49502)
作者简介: 胡 昆(1988—),男,硕士研究生,主要从事光纤传感方面的研究。E-mail: hklovefs@gmail.com
导师简介: 董玉明(1978—),男,博士,副研究员,主要从事光纤传感方面的研究。E-mail: ym.dong@siat.ac.cn
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