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对多模梯度折射率光纤的γ辐照带宽效应进行了实验，发现光纤带宽随着辐照剂量的增加而减小，其值达６０％。对造成这一结果的原因进行了讨论。
Experiments on the γ-radiation bandwidth effect of multimode graded-index optical fiber show that the bandwidth of the optical fiber decreases with the increase of irradiation dose, reaching 60%. The reasons for this result are discussed.