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第 28 卷第 4 期光学学报 Vol. 28 , No. 4
2008 年 4 月 ACTA OP TICA SINICA April , 2008
文章编号: 0253 2239 (2008) 04 0705 05
基于法2拉2 第效应的空2 间2 电磁场测量的方向性研究
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苏洋王江平李玉权
2 (解放军理工大学通信工程学院光纤通信实验室, 江苏南京 210007)
摘要为了解决空间电磁场测量中的方向性问题,提出了三维测量和同时测量横、纵向磁场的两种方案。利用琼
斯矩阵对三种晶体实例( Tb Y) IG、Ce∶YIG 和 YIG 进行误差计算和仿真,并对 MR4 磁光玻璃的方向性进行实验测
试,理论和实验都证明采用三维测量的方法是可行的。对于第二种方案,利用琼斯矩阵进行公式推导得出椭圆偏振
光的方位角、椭偏角与法拉第旋转角、磁致线双折射的数值关系,证明了同时测量横向和纵向磁场分量的可行性。
关键词光学测量; 电磁场; 方向性; 磁致线双折射; 三维测量
中图分类号 TP212. 13 文献标识码 A
A n al ysis of Di recti on alit y f or Sp a t i al Elect r om a ic Fiel d
Meas u re me nt B as ed on Fa r a da y Eff ect
Su Yang 1 Wang J iangping Li Yuquan
( L abor ator y of Op m u nication , Instit ute m u nications Engi neeri ng ,
PLA U niversit y of Science a nd Tech nology , Na nji ng , J ia ngs u 210007 , Chi n a)
Abs t ract To solve the directionality of spatial ic field measurement , two schemes including three
dimensional measurement and simultaneous measurement of transverse , ponents are proposed. The
simulation and calculation of three crystals ( TbY) IG , Ce ∶YIG and YIG by J ones matrix are carried out , and the
directionality of ooptic glass of MR4 is tested. Both theoretical and experimental results prove the feasibility of
the first scheme. For the second scheme the relationship between azimuth angle , ellipticity of the elliptical
polarization li