空芯光子带隙光纤纤芯截切半径的研究  

Research of Core Intersecting Radius of Hollow-core Photonic-Bandgap Fibers

作　　者：张虎[1] 王秋国[1] 杨伯君[1] 于丽[1] 

机构地区：[1]北京邮电大学理学院,光通信与光波技术教育部重点实验室,北京100876

出　　处：《半导体光电》2008年第3期411-414,共4页Semiconductor Optoelectronics

基　　金：国家自然科学基金项目(60578043);北京市教委共建项目(XK100130637)

摘　　要：利用平面波展开法（PWM）计算了理想的圆形空气孔按三角格子排列的光子晶体带隙，利用带隙图设计了移去7根玻璃毛细管形成纤芯的空芯光子带隙光纤（PBF），随后利用全矢量有限元法（FEM）计算了所设计的光纤，给出了在不同半径情况下沿z轴方向的光强分布和光强等高线分布，从而得出了该类光纤消除表面模、减小损耗的纤芯半径最佳截取范围为0．9A～1．0A，为光纤的拉制提供了理论依据。The photonic bandgap structure for a photonic crystal with triangular lattice was calculated by plane wave method （PWM）, and based on the structure diagram, a 7-cell hollow core photonic bandgap fiber （PBF） was designed. And then for a hollow-core PBF designed numerical simulation with full-vectorial finite element method （FEM） was done to present intensity distribution and intensity contour distribution in z axis. The optimal range of core radius free of surface modes and reducing loss is R=0.9A-1.0A for this type of fiber. This range should be followed during stack and drawing of photonic bandgap fibers

关 键 词：光纤光学 空芯光子带隙光纤 全矢量有限元法 光子带隙 表面模 损耗 

分 类 号：TN929.11[电子电信—通信与信息系统]