星载掺铒光纤放大器关键性能参数辐射特性研究

项目名称： 星载掺铒光纤放大器关键性能参数辐射特性研究

项目编号： No.61205045

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 信息四处

项目作者： 李密

作者单位： 南京大学

项目金额： 27万元

中文摘要： 随着卫星激光通信技术的发展，借鉴地面光通信技术的发展模式，将掺铒光纤放大器(EDFA)引入到卫星终端上才能最终实现卫星激光通信技术的实用化和商用化。考虑到空间辐射会降低星载EDFA的性能指标，本项目将以高轨卫星20年的实际空间辐射环境（总剂量>1000krad）为背景：通过对各个核心单元器件的实验研究,初步建立国内首个涵盖星载EDFA内部所有关键单元器件的抗辐射特性数据库；在解决辐射剂量率的外推问题以及测试时间受限问题后，结合地面模拟空间辐射实验数据，给出超低辐射剂量率下单波长和多波长星载EDFA关键特性参数的辐射特性；从通信系统的角度给出采用星载EDFA技术的卫星激光通信系统的主要性能参数随空间辐射总剂量的变化关系。本项目的完成将为EDFA技术由地面光通信向卫星光通信推广提供必要的理论支撑和参考依据，并对非标准光电器件航天标准的制定以及国内光电企业拓宽其产品在航天领域的应用具有重要意义。

中文关键词： 掺铒光纤放大器；空间辐射效应；空间激光通信；；

英文摘要： With the rapid growth of the inter-satellite optical communication technique, the practicality of this technique can be realized only by the introduction of EDFAs by using ground communication technique for reference. Considering the deterioration of EDFAs for satellite caused by space radiation, the project will carry the research in the real space radiation environment of GEO (Geostationary Earth Orbit) for 20 years (The totle radiation dose is more than 1000krad). The main research is as follows: Firstly, the first radiation resistant characteric database, which contains all of the key components of EDFAs, can be founded by the radiation experiments of these key components at home. Secondly, the extrapolation method of radiation dose rate and the restriction problem of the measured time should be overcomed firstly. Then, the single-wavelength and multi-wavelength characteristics of EDFAs in the ultra-low radiation dose rate environment can be obtained with the radiation experiment results in the ground. Lastly, in order to understand the application of EDFAs in satellite optical communication systems better, the radiation effect on the EDFAs has been investigated in the communication viewpoints. The research work mentioned above will be a good reference for introducing the EDFAs to the inter-satellite optical

英文关键词： erbium-doped fiber amplifiers；space radiation effect；space optical communication；；