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环形纤芯结构光纤设计与制备技术研究
Authors
伍淑坚
何晴
+6 more
戚卫
李伟
李尚远
杜城
柯一礼
罗文勇
Publication date
1 January 2020
Publisher
《光通信研究》编辑部
Doi
Cite
Abstract
为支持光子轨道角动量(OAM)模式大容量通信传输,文章探讨了新型OAM信号传输光纤的设计与制备技术,满足大幅度提高通信系统频谱效率和容量对特殊光纤的需求。文章模拟和评估了OAM模式在不同波导结构光纤中的模式特性和传播效果,研究结果表明,提高芯—包层折射率差有利于高阶OAM模式传输,降低了光纤内部的各种微扰。采用等离子体化学气相沉积工艺,高精度实现了设计的折射率剖面,并成功拉制了高质量的OAM光纤,其支持50 km传输28个有效OAM通道的渐变折射率;开发出了可支持96个有效OAM通道的三环芯层结构传输光纤。同时,针对新型传输需求,通过对精确制备技术进行模拟,研究开发出了保偏型OAM传输光纤和OAM掺铒光纤等支持更多OAM模式稳定传输的新型光纤
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Last time updated on 26/01/2023