空芯微结构光纤陀螺性能提升分析与验证

Performance improvement analysis of hollow-core microstructure FOGs

空芯微结构光纤突破了传统光纤框架下由传输介质决定的难以解决的本征物理问题,可解放光纤陀螺应用中的材料限制,为光纤陀螺性能提升带来重要的驱动力。首先,在理论上定量分析了空芯微结构光纤对光纤陀螺诸多误差项的抑制程度,包括Shupe、Faraday、Kerr、偏振、和Rayleigh等误差;之后,构建了环圈长度300 m的空芯微结构光纤陀螺样机,在同等规格条件下与传统光纤陀螺开展了性能比对实验。实验结果表明,空芯微结构光纤陀螺温度特性相比传统光纤陀螺提升了2.5倍。理论和实验均证实空芯微结构光纤是光纤陀螺环境适应性根本性提升的有效技术途径。

Hollow-core microstructure fiber breaks through the intrinsic physical problems determined by the transmission medium in the traditional fiber frame,which can liberate the material limitation in the application of fiber optic gyroscopes(FOGs)and bring important driving force for the improvement of FOGs performance.Firstly,the suppression degree of errors in FOGs using hollow-core microstructure fiber is analyzed quantitatively,including Shupe,Faraday,Kerr,polarization,Rayleigh and other errors.Then,a prototype of hollow-core microstructure FOG with300 m fiber coil is built.Compared with traditional FOG,the temperature characteristics of the hollow-core microstructure FOG is improved by 2.5 times under the same specifications.In conclusion,both theory and experiment prove that hollow-core microstructure fiber is an effective technical way to improve the environmental adaptability of FOGs.