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针对高精度光纤陀螺的空间应用,理论分析了用于高精度光纤陀螺的不同结构掺铒光纤光源的抗辐照性能,指出了单通后向结构的掺铒光纤光源具有更好的抗辐照性能。对单通后向结构采用不同掺杂浓度的掺铒光纤设计并研制了掺铒光纤光源,在实验室用Co60辐照源进行了大小两个剂量率的辐照试验,监测了掺铒光纤光源平均波长和输出光功率随辐照总剂量的变化,试验结果表明:掺铒光纤掺杂浓度较高时,掺铒光纤光源的抗辐照能力较强;辐照剂量率较小时,掺铒光纤光源功率随辐照总剂量的降低速度更慢。掺杂浓度较高的掺铒光纤光源可以满足高精度光纤陀螺空间应用的要求。
For space applications of high-precision fiber optic gyroscope, the anti-radiation performance of different structure erbium-doped fiber light sources for high-precision fiber optic gyroscope is theoretically analyzed. It is pointed out that the erbium-doped fiber light source with single- performance. An erbium-doped fiber light source with different doping concentrations was designed and fabricated for a single-pass back-end structure. Two types of radiation experiments at two dose rates were conducted in a laboratory with a Co60 irradiation source. Erbium-doped fiber light sources The average wavelength and output optical power with the total radiation dose changes, the experimental results show that: when the doping concentration of erbium-doped fiber is higher, the anti-irradiation ability of erbium-doped fiber light source is stronger; when the irradiation dose rate is small, erbium- The power of the light decreases more slowly with the total radiation dose. Doping concentration of erbium-doped fiber light source to meet the high-precision fiber optic gyroscope space applications.