空芯光子带隙光纤纤芯周围石英环的设计  

Design of silica ring surrounding the core of hollow-core photonic bandgap fibers

作　　者：孙世红[1] 刘敏[1] 董传培[1] 马丽伟[1] 王旭东[1] 

机构地区：[1]重庆大学通信工程学院,重庆400044

出　　处：《激光技术》2011年第4期492-494,共3页Laser Technology

摘　　要：为了研究纤芯-包层交界处石英环厚度对空芯光子带隙光纤的传输带宽、色散、纤芯能量、非线性系数的影响,利用全矢量有限元法对所设计的7孔空芯光子带隙光纤进行仿真,得到了纤芯半径固定时,不同石英环相对厚度情况下,光纤带宽、色散、纤芯能量及非线性系数随波长的变化曲线。结果表明,石英环相对厚度的最佳取值范围为0.5～0.6,这为光纤设计提供了理论依据。In order to study effect of the silica ring at the core-cladding interface on the transmission bandwidth, dispersion, core-confined energy and nonlinear coefficient, for the designed 7-cell hollow-core photonic bandgap fibers （ HC-PBGFs）, they were numerically simulated by means of full-vector finite element method, and the curves of the transmission bandwidth, dispersion, core-confined energy, nonlinear coefficient in different normalized thickness of the silica ring with the same core radius were obtained. The simulation results show that the best range of normalized thickness of silica ring is 0. 5 to 0. 6, which provides theoretical evidence to design the HC-PBGFs.

关 键 词：光纤光学 石英环相对厚度 全矢量有限元法 表面模 

分 类 号：TN253[电子电信—物理电子学]