| 基于螺旋式光纤环输出光斑旋转的温度传感器 |
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| 引用本文： | 肖辽,顾杰,马军山. 基于螺旋式光纤环输出光斑旋转的温度传感器[J]. 光学仪器, 2017, 39(2): 34-38. DOI: 10.3969/j.issn.1005-5630.2017.02.006 |
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| 作者姓名： | 肖辽 顾杰 马军山 |
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| 作者单位： | 上海理工大学光电信息与计算机工程学院,上海,200093 |
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| 摘 要： | 采用将传感光纤绕制在螺旋型调制器上的方法,设计了一种基于光斑旋转角度调制的新型光纤温度传感器。根据螺旋型调制器所处环境温度的变化会使传感光纤产生双折射效应,从而使出射光斑发生旋转变化的原理,通过CCD获得不同温度下的出射光斑图像的变化情况以及利用MATLAB对所得数据进行处理,可以探测出温度变化与出射光斑旋转角度的关系,达到对温度间接测量的目的。实验证明,光斑旋转角度与温度变化在一定范围内有很好的线性关系,而且该传感系统灵敏度也比较高。
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| 关 键 词： | 光纤传感 双折射效应 温度变化 光斑旋转 |
| 收稿时间： | 2016-08-24 |
Temperature sensor based on spot rotation output from a spiral-type optical fiber loop |
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| XIAO Liao,GU Jie and MA Junshan. Temperature sensor based on spot rotation output from a spiral-type optical fiber loop[J]. Optical Instruments, 2017, 39(2): 34-38. DOI: 10.3969/j.issn.1005-5630.2017.02.006 |
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| Authors: | XIAO Liao GU Jie MA Junshan |
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| Affiliation: | School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China,School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China and School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China |
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| Abstract: | By using the method by winding a sensing fiber around a spiral modulator,we designed a new fiber optical temperature sensor based on the spot rotation angle modulation.The change of the ambient temperature produces birefringence in the sensing fiber,and thus it results in the rotation change of the output spot.The output spot image corresponding to the change of the temperature is obtained by a CCD and analyzed by using MATLAB.It can detect temperature changes and figure out the relationship between the rotation angle of the output spot,indirectly measuring the temperature.Experiments show that the output spot rotation and temperature change within a certain range have a good linear relationship,and the sensitivity of the sensor system is relatively high. |
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| Keywords: | fiber sensor birefringence effect temperature variation spot rotation |
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