大型天文望远镜中星像传输光纤的关键技术研究

项目名称： 大型天文望远镜中星像传输光纤的关键技术研究

项目编号： No.U1231201

项目类型： 联合基金项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 关春颖

作者单位： 哈尔滨工程大学

项目金额： 240万元

中文摘要： 天文光学技术和天文望远镜中引入光纤技术具有革命性的意义，我国成功建造的“大天区面积多目标光纤光谱望远镜”（LAMOST）中采用光纤进行大天区、多目标探测，高达4000根星像传输光纤使其成为世界上同时探测目标最多、效率最高的天文光谱望远镜。本项目拟发展具有集星像导引、焦比匹配于一身的特种多芯光纤，开展星像导引用特种多芯光纤的结构设计与参数优化、输入输出光纤端复合透镜设计、星像转接光纤中导星芯信息光的分离，以及特种光纤星像光谱传输的一致性调控方法与技术研究。构建多芯光纤星像转接新功能光学部件，消除光纤传输的不一致性，解决光谱天文望远镜的大探测天区、多目标接收时的星像转接精确控制关键问题，进一步提高天文望远镜的光谱探测性能，为我国下一代南天“大天区面积多目标光纤光谱望远镜”的设计与建造奠定关键技术基础，提供关键器件与设备支撑。

中文关键词： LAMOST；导星光纤；微透镜；多芯光束分离；

英文摘要： It is revolutionary to introduce optical fiber technologies into astronomical optics and astronomical telescope. ‘Large Sky Area Multi-Objective Fiber Spectroscopic telescope’(LAMOST), one that possesses the highest spectrum acquiring rate in the world, have been constructed successfully in our country employing as many as 4000 astrology transmission optical fibers. In this project, we are going to develop a kind of special multi-core fibers with the functionalities of star-image guiding and f-ratio matching, research structural designs and parameter optimization of optical fibers. Meanwhile, the design of the input/output optical fiber lens, the separation technology of information light in the guiding star optical fibers and the consistency method and technology of such optical fibers will be studied. New optical components eliminating the optical fiber transmission inconsistency will be constructed based on such fibers and the key problem of the accurate connection and control in the LAMOST will be solved. The project can further improve the spectrum detection performance of astronomical telescope and pave the way for the design and fabrication of Nantian LAMOST, the next generation of our country’s LAMOST, providing key devices and equipment supports.

英文关键词： LAMOST；Guiding star optical fibers；Micro lens；Separation of multicore light beams；