新型抗弯曲单模光子晶体光纤的研究  

Research on a novel bend-resistant single-mode photonic crystal fiber

作　　者：曹原[1] 徐冠杰[1] 孙雨昕[1] 施伟华[1] 

机构地区：[1]南京邮电大学光电工程学院,南京210023

出　　处：《光通信研究》2015年第2期39-42,共4页Study on Optical Communications

基　　金：国家自然科学基金资助项目(61275067);国家大学生创新训练计划资助项目(SZDG2014008)

摘　　要：文章提出了一种对称结构的新型抗弯曲单模光子晶体光纤,采用全矢量有限元法分析了该光纤的单模特性及弯曲特性。在1 550nm波长处,光纤处于单模运转;当弯曲半径为5mm时,弯曲损耗仅为8.73×10-5 dB/圈;最小弯曲半径可达4.5mm,此时弯曲损耗为2.38×10-4 dB/圈;且无论光纤弯曲与否,其在1 550nm波长处的模场面积均约为61μm2,色散系数约为11.13ps/(nm·km),与普通单模光纤相匹配。A novel bend-resistant single-mode photonic crystal fiber in a symmetrical structure is proposed in this paper.The single-mode and bending properties of the fiber are analyzed by using the full-vector finite element method.The fiber is in single-mode operation at 1 550 nm.The bending loss is only 8.73×10^-5 dB/turn when the bending radius is 5 mm and it is2.38×10^-4 dB/turn when the minimum bending radius is 4.5mm.In addition,no matter whether the fiber is bended or not,the mode field area and chromatic dispersion are maintained at about 61μm^2 and 11.13ps/（nm·km）respectively at 1 550 nm,well matched with the conventional single-mode fibers.

关 键 词：光子晶体光纤 低弯曲损耗 单模 光纤到户 

分 类 号：TN818[电子电信—信息与通信工程]