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1/4波片对全光纤电流传感器的影响与优化 被引量：5

Study and Optimum Design of Quarter-waveplate in All Fiber Optical Current Transducer
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摘要 1/4波片是全光纤电流传感器(AFOCT)最重要的光学器件之一,针对SLD宽谱光源产生的时间相干性问题,借助琼斯矩阵对光束的传播全过程进行了详细分析与计算,推导出探测器关于1/4波片参数的光强表达式。根据闭环电路工作原理得到了1/4波片参数对传感器信噪比和标度因数的影响规律,并通过实验验证。根据传感光纤的Verdet(维尔德)常数的温度特性,提出了1/4波片的优化设计。 The quarter-waveplate is one of the most important optical devices in all fiber optical current transducer（AFOCT）.Taking into account the temporal coherence of SLD,the detailed analysis and calculation of the entire spreading process of the beam are completed by using Jones Matrix.The expression of optical intensity depending on the parameters of the quarter-waveplate can be set up.According to the principle of closed-loop circuit,the law about quarter-waveplate affecting the signal-to-noise ratio（SNR） and scale factor of AFOCT is disclosed and verified by experiments.Optimum design of the quarter-waveplate which is based on the temperature characteristic of the Verdet constant is also shown.
作者 段俊杰 吴衍记 杨怿 向强
机构地区 北京自动化控制设备研究所
出处 《光电技术应用》 2011年第5期28-32,50,共6页 Electro-Optic Technology Application
关键词 全光纤电流传感器 1/4波片 琼斯矩阵 Verdet all fiber optical current transducer quarter-waveplate Jones Matrix Verdet
分类号 TN253 [电子电信—物理电子学]
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参考文献10

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二级参考文献37

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共引文献74

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引证文献5

二级引证文献23

光电技术应用
2011年 第5期

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