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�������պ����ѧѧ�� 2005, Vol. 31 Issue (10) :1116-1120    DOI:
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Experiment study on magnet sensitivity of fiber optic gyro
Wang Xiaxiao, Song Ningfang, Zhang Chunxi, Ma Zongfen*
School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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ժҪ ���˻��ǹ������ݵ����в���.��SagnacЧӦ��,�Źⷨ����(Faraday)ЧӦҲ�ǹ���������ʵ�ʴ��ڵķǻ���ЧӦ.�Źⷨ����ЧӦ�����ڹ����������պ͹��˻����ƹ����д��ڵ�ʣ��˫����͹���Ť��������,�������������λ�и���һ���̶�ƫ��.��������Ԫ������,�Ƶ���΢�ι��˴Źⷨ����ЧӦ����˹����;�����˹��˻��ܴų�Ӱ�����ѧģ��;���ú�ķ������Ȧ������������֤.������֤���˹������ݴ��������Ǵ��ڲ��ҿ���ȷ����,����˽��������ܴų�Ӱ��ľ����ʩ.
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Abstract�� Fiber coil is the sense element of FOG(fiber optical gyroscopes). Except Sagnac effect, magneto-optic Faraday effect is one of the main non-reciprocity effect of FOG. Magneto-optic Faraday effect is caused by fiber twist and residual birefringence during fiber producing and fiber coil winding. It can add one bias in the output of FOG. Based on the finite element analysis,the magnetic model of FOG’s fiber coil is given by using the Jones matrices formalism. The experiment verification is made by using the Helmholtz coil. The result shows that a existing fixed magnet sensitivity axis represents the magnet sensitivity of FOG and the direction of magnet sensitivity axis can be confirmed.And the ways to suppressing the magnetic field effects are discussed.
Keywords�� fiber optic sensors   gyroscopes   magnetooptical effects   magnetic field effects     
Received 2004-06-25;
About author: ������(1977-),��,ɽ��̫ԭ��,��ʿ��, naga 77@163.com.
������, ������, �Ŵ���, ���ڷ�.�������ݴ������Ե������о�[J]  �������պ����ѧѧ��, 2005,V31(10): 1116-1120
Wang Xiaxiao, Song Ningfang, Zhang Chunxi, Ma Zongfen.Experiment study on magnet sensitivity of fiber optic gyro[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2005,V31(10): 1116-1120
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