光子晶体光纤陀螺技术研究  

Research on photonic crystal fiber optic gyroscope

作　　者：王巍[1] 李晶[1] 

机构地区：[1]北京航天控制仪器研究所,北京100854

出　　处：《中国科学：信息科学》2015年第7期869-877,共9页Scientia Sinica(Informationis)

摘　　要：光子晶体光纤具有较小的温度系数、Kerr系数、Verdet系数和较好的抗辐照性能,应用于光纤陀螺可提升陀螺实用精度,减小陀螺的体积、质量.本文从噪声、零偏漂移和标度因数特性3个方面,阐述了光子晶体光纤陀螺的误差机理并进行了误差分析,对比了光子带隙光纤和折射率导引光子晶体光纤应用于光纤陀螺的差异.在此基础上,研制了基于折射率导引光子晶体光纤的陀螺样机,其测试结果表明:相对于普通光纤陀螺,光子晶体光纤陀螺的温度稳定性提升约50%,33 krad(Si)的总剂量辐照条件下,陀螺零偏漂移小于0.05°/h(1σ),该技术是未来光纤陀螺的重要发展方向.Photonic crystal fiber （PCF） has numerous advantages, such as limited temperature dependence, small Kerr and Verdet coefficients, and high radiation hardness. By using PCF, a fiber optic gyroscope （FOG） with reduced size, low weight, and high precision can be realized. In this paper, the error mechanism of a photonic crystal fiber optic gyroscope （PCFOG） is studied and analyzed in terms of noise, bias shift, and scale factor. To improve FOG applications, the differences between photonic band gap fiber and refractive index guide PCF are investigated. Moreover, a FOG based on refractive index guide PCF is developed. The test results show that the PCFOG provides a 50% improvement in temperature stability compared with a conventional FOG, and that the bias shift is less than 0.05°/h（1σ） under a total radiation dose of 33 krad （Si）. Therefore, PCFOG technology represents an important development in FOG applications.

关 键 词：光纤陀螺 光子晶体光纤 零偏漂移 偏振误差 噪声 

分 类 号：TN253[电子电信—物理电子学]