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�������պ����ѧѧ�� 2006, Vol. 32 Issue (12) :1439-1442    DOI:
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Influence of source spectrum on bias stability of interference fiber optic gyroscopes
Li Yan, Ou Pan, Zhang Chunxi, Xu Hongjie*
School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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ժҪ �Բ���Y�������ɹ�ѧ�������ı�ƫ�͸���ʽ��������(IFOG,Interference Fiber Optic Gyroscopes)Ϊ�о�����,���ݸ���ѧԪ�����IJ���,�����˸���������˹�����Լ���·����ģ��,�ڴ˻����Ͻ����˹�·ƫ���������۷���.ͨ���Ƶ�,�õ��˱�ƫ�͸���ʽ�������ݵ�ƫ�������ʽ.�״ν�����Դƫ��ȵĸı�,�����˲�ͬ��״�Ĺ�Դ���׶�ƫ��ģʽ�����������������Ư��Ӱ��.ͨ������ó�,����Դ��ƫ�����0~3%֮������Ա仯�Լ���·��������������ʱ,�׿��խ�Ĺ����������Ư�ϴ�,�׿�Ͽ�Ĺ����������Ư��С.���������������ݹ�Դ���׵�ѡ���ṩ����������.
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Abstract�� The Jones matrixes and mathematical model for the optical transmission of IFOG(interference fiber optic gyroscopes) were built based on the polarization IFOG, which uses Y waveguide integrated optical modulator, and depended on the parameters of the optical instruments. The polarization errors were analyzed theoretically, and the expressions of the polarization errors of IFOG were achieved. The influence of different source spectra on the bias stability of IFOG, caused by the polarization errors, was analyzed for the first time with the aid of source degree of polarization. By calculation, when the source degree of polarization changes linearly between 0~3% and other parameters are constants, the result that the narrower the spectrum, the larger the bias stability caused by the polarization errors is achieved. Simulation results give theoretical reference to the selection of source spectra for the IFOG.
Keywords�� spectrum   fiber optic gyroscopes   bias stability   polarization errors     
Received 2005-12-05;
About author: �� ��(1975-),Ů,�ӱ�������,��ʿ��,lettlrom@aspe.buaa.edu.cn.
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����, ŷ��, �Ŵ���, ����.��Դ���׶Ը���ʽ����������Ư��Ӱ��[J]  �������պ����ѧѧ��, 2006,V32(12): 1439-1442
Li Yan, Ou Pan, Zhang Chunxi, Xu Hongjie.Influence of source spectrum on bias stability of interference fiber optic gyroscopes[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2006,V32(12): 1439-1442
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2006/V32/I12/1439
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