一种低损耗低模式串扰渐变型少模光纤  

Research on a few mode fiber with low loss,low mode crosstalk and graded index

作　　者：于如愿 郑宏军[1] 黎昕[1] 白成林[1] 胡卫生[2] 刘倩倩 王潇 YU Ru-yuan;ZHENG Hong-jun;LI Xin;BAI Cheng-lin;HU Wei-sheng;LIU Qian-qian;WANG Xiao(Shandong Provincial Key Laboratory of Optical Communication Science and Technology,School of Physics Science and Information Technology,Liaocheng University,Liaocheng 252059,China;State Key Laboratory of Advanced Optical Communication Systems and Networks,School of Electronic Information and Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]山东省光通信科学与技术重点实验室,聊城大学物理科学与信息工程学院,山东聊城252059 [2]区域光纤通信网与新型光通信系统国家重点实验室,上海交通大学电子信息与电气工程学院,上海200240

出　　处：《光电子．激光》2019年第4期353-358,共6页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(61671227和61431009);山东省自然科学基金(ZR2011FM015);“泰山学者”建设工程专项经费等资助

摘　　要：提出了一种纯二氧化硅纤芯、渐变折射率分布的两模光纤,实现了渐变折射率少模光纤低差分模式群时延和纯二氧化硅芯光纤低损耗优点的有效结合。采用全矢量有限元方法研究表明,所提出的少模光纤纤芯采用纯二氧化硅实现了低损耗,采用纤芯渐变折射率实现了低差分群延迟,包层处采用凹陷折射率实现了低弯曲损耗,采用模式大折射率差实现了低模式串扰,采用大有效面积实现了低非线性系数;该光纤具有非线性系数和差分模式群时延在1.5~1.65μm波长范围内平坦特性。A kind of two-mode fiber with pure silica core and graded index is proposed by employing full vector finite element method, which combines the advantages of low differential mode group delay (DMGD) of graded index few-mode fiber and low loss of pure silica core fiber. The proposed few-mode fiber obtains low loss, low DMGD, low bending loss and low mode crosstalk using the methods of pure silica core,graded index, the trench refractive index and large mode refractive index, respectively. Moreover, the nonlinear coefficient and DMGD of the proposed few mode fiber are flattened in the wavelength range of 1.5-1.65 μm.

关 键 词：少模光纤 纯二氧化硅芯 渐变折射率 低损耗 低模式串扰 

分 类 号：TN913.7[电子电信—通信与信息系统]