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 60Co radiation source at different dose rates. Based 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.
Abstract：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 60Co radiation source at different dose rates. Based 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.
XIAO Wen;LIU De-Wen;LIU Yang;YI Xiao-Su;CONG Lin. Effects of Polarization-Maintaining Fibre Degrading on Precision of Fibre Optic Gyroscopes in Radiation Environment[J]. 中国物理快报, 2008, 25(4): 1224-1226.
XIAO Wen, LIU De-Wen, LIU Yang, YI Xiao-Su, CONG Lin. Effects of Polarization-Maintaining Fibre Degrading on Precision of Fibre Optic Gyroscopes in Radiation Environment. Chin. Phys. Lett., 2008, 25(4): 1224-1226.
[1] Thierry G 2002 OFS'15 (15th Optical Fibre SensorsConference Technical Digest, Portland, 6--10 May 2002) p 1 [2] Xiao W, Liu D W and Zhang Y Y 2005 SPIE 5985 5985O-1 [3] Gaiffe T and Fausso N 1999 ESA Final Report No1242SR06B 37 [4] Glenn U et al %, David M K, Michael K, Glenn S, Bill T and Norman R S1993 NASA Report No 109242 3 [5] Wang T Q et al %, Shen Y P, Wang S W and Zhang S F1999 J. National University of Defense Technology 21 36 (in Chinese) [6] Wang T Y et al %, Chen Z Y and Pang F F2006 Chin. Opt. Lett. 4 687 [7] Xiao W et al %, Zhang Y Y and Liu D W2006 J. Beijing University ofAeronautics and Astronautics 32 966 (in Chinese) [8] Griscom D L et al %, Gingerich M E and Friebele E J1994 IEEE Trans.Nucl. Sci. 41523 [9] Lefevre H C 1993 {The Fibre-Optic Gyroscope ed Zhang G C and WangW (Changsha: Translation National Defence Industry) chap 3 p 30 (inChinese)
2008, Vol. 25 
