Effects of Polarization-Maintaining Fibre Degrading on Precision of Fibre Optic Gyroscopes in Radiation Environment  

作　　者：肖文 刘德文 刘洋 伊小素 丛琳 

机构地区：[1]School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083

出　　处：《Chinese Physics Letters》2008年第4期1224-1226,共3页中国物理快报（英文版）

摘　　要：In the space environment, the precision of fibre optic gyroscopes （FOGs） degrades because of space radiation. Photonic components of FOGs are affected by radiation, especially the polarization-maintaining （PM） fibre coil. In relation to the space radiation environment characteristic, we have carried out a series of radiation experiments on a PM fibre coil with 6OCo radiation source at different dose rates. Bazed on the experimental results, the formula between the PM-fibre loss and radiation dose rate is built, and the relation between the precision of FOG and radiation dose is obtained accordingly. The results strongly show that the precision of our FOG degrades owing to the attenuation of the polarization-maintaining fibre, which provides theoretical foundation for the radiation-resistant design of the FOG.In the space environment, the precision of fibre optic gyroscopes （FOGs） degrades because of space radiation. Photonic components of FOGs are affected by radiation, especially the polarization-maintaining （PM） fibre coil. In relation to the space radiation environment characteristic, we have carried out a series of radiation experiments on a PM fibre coil with 6OCo radiation source at different dose rates. Bazed on the experimental results, the formula between the PM-fibre loss and radiation dose rate is built, and the relation between the precision of FOG and radiation dose is obtained accordingly. The results strongly show that the precision of our FOG degrades owing to the attenuation of the polarization-maintaining fibre, which provides theoretical foundation for the radiation-resistant design of the FOG.

分 类 号：O43[机械工程—光学工程]