| 1/4波片对全光纤电流传感器的影响与优化 |
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| 引用本文： | 段俊杰,吴衍记,杨怿,向强.1/4波片对全光纤电流传感器的影响与优化[J].光电技术应用,2011(5):28-32,50. |
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| 作者姓名： | 段俊杰 吴衍记 杨怿 向强 |
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| 作者单位： | 北京自动化控制设备研究所; |
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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。
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| 关 键 词： | 全光纤电流传感器 1/4波片 琼斯矩阵 Verdet |
Study and Optimum Design of Quarter-waveplate in All Fiber Optical Current Transducer |
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| DUAN Jun-jie,WU Yan-ji,YANG yi,XIANG Qiang.Study and Optimum Design of Quarter-waveplate in All Fiber Optical Current Transducer[J].Electro-Optic Technology Application,2011(5):28-32,50. |
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| Authors: | DUAN Jun-jie WU Yan-ji YANG yi XIANG Qiang |
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| Institution: | DUAN Jun-jie,WU Yan-ji,YANG yi,XIANG Qiang (Beijing Auto-control Equipment Institute,Beijing 100074,China) |
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| Abstract: | 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 ... |
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| Keywords: | all fiber optical current transducer quarter-waveplate Jones Matrix Verdet |
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