基于一种新型掺铒光纤的抗辐照EDFA研究

摘要

A study on radiation-hard EDFA based on a novel erbium-doped fiber was carried out.The experimental results show that the passive-transmission decay rate of the optical fiber under radiation environment is 3.24 ×10-3 dB/ (krad·m),which is 30.6％ larger than that of the conventional erbium-doped fibers.The radiation sensitivity properties of the key devices in EDFA was compared.The EDFA based on the proposed novel fiber structure exhibits a limited decrease by 0.35dB up to total dose of 70krad (Si) under the 60Co radiation.%开展了基于一种新型掺铒光纤的抗辐照EDFA研究.通过与单模光纤和普通掺铒光纤的辐照对比,得出该型光纤的无源传输辐照衰减率为3.24×10-3 dB/(krad·m),比普通掺铒光纤的辐照耐受能力高出30.6％.对比了EDFA中各关键器件的辐照敏感特性.基于该新型光纤搭建的EDFA在70krad(Si)的辐照剂量照射下增益下降0.35dB.