摘要
光通信技术因其通信容量大、保密性好等优点成为星间通信的未来趋势。光功率放大技术是解决光学星间链路的技术之一,以满足星间远距离通信需求。提出一种两级光放大技术,第一级采用掺钕(Nd3+)光纤放大器,获得1W输出功率,第二级采用固态Nd:YAG放大器,是基于两个掺杂浓度为1%的Nd:YAG晶体构成的放大器。经过优化设计后,总输出功率增加到3.5W。采用晶体放大器,可有效提高放大器空间抗幅照能力,可应用于相干星间光空间通信。
Optical communications with its communication capacity and confidentiality become good future trends of inter-satellite communications. Optical amplifier is one of key technologies of communication link between satellites in order to satisfy the demands of long distance between satellites. In this paper,a two-stage optical amplifier is presented.The first stage is a neodymium doped fiber amplifier and the output power with 1w is achieved.The second stage is a solid-state Nd：YAG amplifier, which is based on two pieces of crystals and doped 1% Nd：YAG. Through the optimization design,the total output power with 3.5W is achieved. The irradiating resistance of the optical amplifier can be effectively improved because of using crystal amplifier and used in coherent optical inter-satellite space communications.
出处
《长春理工大学学报（自然科学版）》
2014年第4期79-82,共4页
Journal of Changchun University of Science and Technology(Natural Science Edition)
基金
吉林省科技发展计划项目(201201119)
关键词
空间光通信
光纤放大器
固体放大器
space optical communication
fiber amplifier
solid amplifier
