一、前言光纤由于其抗电磁干扰和电磁脉冲、电路间良好的隔离度、很宽的带宽、尺寸小、重量轻等优点,导致了它在军事指挥、通讯和控制等各种系统中的应用。光纤应用于军事系统中的一个重要问题是核辐射和宇宙线的辐射问题。众所周知,光纤受辐照以后会产生着色中心而使光纤的光学性能下降。光纤可能会遇到的核辐射的应用场合,不仅包括战术和战略性的军事应用,而且还包括核废料和地下核试验的监测,热反应堆的元件的直观观测,航天通 I. INTRODUCTION Due to its advantages of anti-electromagnetic interference and electromagnetic pulse, good isolation between circuits, wide bandwidth, small size and light weight, optical fiber has led to its application in various systems such as military command, communication and control . An important issue in the application of optical fibers to military systems is the radiation of nuclear and cosmic rays. It is well-known that the optical fiber will produce a colored center after being irradiated and the optical performance of the optical fiber will be degraded. Applications of nuclear radiation that optical fibers may encounter include not only tactical and strategic military applications but also monitoring of nuclear waste and underground nuclear testing, visual observation of components of a thermal reactor,