低差分模时延4-LP少模光纤设计  

Design of 4-LP Few-Mode Fiber with Low-Differential Mode Delay

作　　者：代勇 田凤[1] 王拥军[1] 顾宇 Dai Yong;Tian Feng;Wang Yongjun;Gu Yu(Beijing Key Laboratory of Space-Round Interconnection and Convergence,State Key Laboratory of Information Photonics and Optical Communication,School of Electronic Engineering,Beijing University of Posts and Telecommunications,Beijing 100876)

机构地区：[1]北京邮电大学电子工程学院,信息光子学与光通信国家重点实验室,天地互联与融合北京市重点实验室,北京100876

出　　处：《光学学报》2021年第21期74-79,共6页Acta Optica Sinica

基　　金：国家重点研发计划(2018YFB1801001);国家自然科学基金(62021005,61875248,61727817)。

摘　　要：设计了一种基于密集空气孔辅助的低差分模时延4-LP少模光纤结构,利用COMSOL软件仿真分析了不同结构参数对差分模时延的影响。仿真结果表明,各个模式的差分模时延在C+L波段均小于40 ps/km,因此所提低差分模时延少模光纤结构能够改善系统性能,降低接收端接收机的复杂度和功耗。In this study,the structure of 4-LP few-mode fiber with low-differential mode delay is designed based on a dense air hole.The influence of different structural parameters on the differential mode delay is analyzed using the COMSOL software.The simulation results show that the differential mode delay of optical fiber is below 25 ps/km at a wavelength of C+L.Therefore,the proposed structure of few-mode fiber with low-differential mode delay can improve the system performance and reduce the complexity and power consumption of the receiver.

关 键 词：光纤光学 空分复用 密集空气孔 少模光纤 低差分模时延 

分 类 号：TN29[电子电信—物理电子学]