考虑到滤光片工作在强光辐照条件下，所以选用的材料必须具有低的吸收和高的抗能量阈值。

The minus filter works under the irradiation of major light, so the materials must have low absorption and high anti-energy threshold.

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据此提出了主动恢复效应和基于该效应利用两个光源主动增强光纤抗辐照性能的设计方法，并对其实际应用价值进行了探讨。

Hereby the active recovery effect was put forward to reinforce the fibers' radiation resistance using two sources. In addition, the application importance of the methods was also discussed.

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