| 起偏器参量对磁场传感器光偏振态的影响 |
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| 引用本文： | 王江平,苏洋,李玉权.起偏器参量对磁场传感器光偏振态的影响[J].解放军理工大学学报,2009,10(1):7-11. |
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| 作者姓名： | 王江平 苏洋 李玉权 |
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| 作者单位： | 王江平,WANG Jiang-ping(南京晓庄学院,江苏,南京,210017;解放军理工大学,通信工程学院,江苏,南京,210007);苏洋,李玉权,SU Yan,LI Yu-quan(解放军理工大学,通信工程学院,江苏,南京,210007)
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| 摘 要： | 为了研究磁场传感器中出射光偏振态,用Poincaré球法分析了磁场传感器起偏角对光偏振态的影响.结果表明:Faraday材料中线双折射率的存在,使线偏振光演进为椭圆偏振光.无论外加磁场及Faraday材料线双折射率如何变化,当起偏角为45°时,出射偏振光始终为左旋椭圆偏振光;当起偏角为135°时,出射偏振光始终为右旋椭圆偏振光.其结果对偏振型磁场传感器的信号检测设计有一定的参考价值.
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| 关 键 词： | 偏振态 磁场传感器 Poincaré球 |
Effect of polarizer azimuth on polarization state
of magnetic field sensor |
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| WANG Jiang-ping,SU Yan and LI Yu-quan.Effect of polarizer azimuth on polarization state
of magnetic field sensor[J].Journal of PLA University of Science and Technology(Natural Science Edition),2009,10(1):7-11. |
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| Authors: | WANG Jiang-ping SU Yan and LI Yu-quan |
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| Institution: | 1.College of Nanjing Xiaozhuang;Nanjing 210017;China;2.Institute of Communications Engineering;PLA Univ.of Sci.& Tech.;Nanjing 210007;China |
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| Abstract: | In order to study the po larzat ion state of output sig nals, the effect of azimuth on the output light
in magnet ic f ield sensor w as analyzed. T he result s show that linear biref ringent Faraday material makes
output lig ht linear po larizations become ell ipt ically polarized light , that w hen the azimuth of polar izer is
45°,
output light SOP is lef t ellipt ically polar ized light all the t ime, and that w hen the azimuth of polarizer
is 135°,
o utput light SOP is rig ht ellipt ically polar ized light al l the t ime w hatever mag net ic f ield and the
value of linear birefringent Faraday material ar e. T he r esult s may be useful for the sig nal detect ion of magnet
ic field sensor. |
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