空间光通信中EDFA的抗辐射技术的研究  

Research of Anti-Radiation Technology for the EDFA Systems in Space Environment

作　　者：王岩[1] 李洪祚[1] 郝子强[1] 

机构地区：[1]长春理工大学电子信息工程学院,吉林长春130022

出　　处：《激光与光电子学进展》2013年第7期13-21,共9页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(60977052)

摘　　要：随着通信技术的不断发展和世界各国对空间领域的高度重视,空间光通信技术已经成为全世界的研究热点之一。目前地面光通信的发展十分迅速,放大技术中的各种难点都已经取得重大突破,特别是基于光纤放大器的技术应用已十分广泛,技术也十分成熟。由于光纤类器件对空间的辐射环境十分敏感,要想采用地面已非常成熟的外调制技术,就必须考虑外调制技术中的核心器件掺铒光纤放大器(EDFA)在空间环境中应用的可行性并分析相应的抗辐射技术。首先分析了空间的辐射环境,并对其对EDFA性能的影响进行了理论分析,提出了采用包括退色心抗辐射技术、预辐射和载氢抗辐射技术和光纤制作工艺的抗辐射技术在内的办法来有效提高EDFA系统空间抗辐射的性能,为EDFA在空间光通信领域的应用提供了理论基础。实验研究表明,采用上述抗辐射方法,理论上可以给1550nm的掺铒光纤(EDF)大约减少0.8dB/km的辐射衰减量。With the development of communication technology and the highly valued position of space area, space optical communication technology has become one of the hot spots in the world. At present, the ground optical communication is developing very fast, and a variety of difficulties has already been broken through for amplification techniques, especially those based on fiber amplifier have been widely used, and the technology is very mature. As the fiber-type devices are very sensitive to the radiation environment of the space, if the external modulation technology which has been successfully used in ground optical communications is used in space environment, we must consider the feasibility of the erbium doped fiber amplifier （EDFA） which is the core device in the external modulation technology and analyze the corresponding anti-radiation technique. This paper analyzes the space radiation environment and its effect on the performance of EDFA. Approaches including fading center anti-radiation technique, pre-radiation and hydrogen loading active anti-radiation technique and fiber manufacturing technology of anti-radiation technique are proposed to improve the space radiation resistant performance of the EDFA systems. A theoretical basis is provided for the application of EDFA in space optical communications. Through the experimental study, it is found that by adopting the above anti-radiation methods, the radiative decay of 1550 nm erbium-doped fiber （EDF） can be reduced by 0.8 dB/km theoretically.

关 键 词：光纤光学 空间环境 掺铒光纤放大器 抗辐射 

分 类 号：TN253[电子电信—物理电子学]