光纤陀螺光学器件的空间辐射效应及防护技术

针对光纤陀螺用光学器件在空间辐射环境下受电离损伤和位移损伤影响性能下降的问题,分别分析了光纤、SLD光源、PIN-FET探测器的空间辐射效应。为保证光纤陀螺在空间的工作性能,从被动屏蔽和主动加固两方面讨论了光学器件的辐射防护技术。考虑到不同光学器件对不同类型辐射损伤的敏感性以及航天器载荷对重量的严格要求,从电离损伤屏蔽和位移损伤屏蔽两方面对屏蔽厚度进行了优化设计。通过对各光学器件辐射效应机理的分析,讨论了提高光学器件本身抗辐射能力的主动加固技术。

Radiation effects and protection technology for optical components of fiber optic gyroscope

The performance of optical components for fiber optic gyroscope (FOG) will degrade by ionizing damage effect and displacement damage effect in space radiation environment. Radiation effects on optical fiber, SLD optical source, and PIN-FET detector module were discussed respectively. In order to keep the performance of FOG in space, radiation protection technology was discussed from both radiation shielding and active hardening technology. Given that different optical components have different radiation sensitivity for different radiation damage mechanism, and there has a strict requirement on the weight of spacecraft payload, then the design of shielding was optimized on ionizing damage and displacement damage respectively. The active hardening technologies for every optical component were also discussed based on the analysis of radiation effects on each component.