变孔径色散补偿光子晶体光纤的数值研究  

Numerical Study on Photonic Crystal Fiber with Variable Air-hole Radius for Dispersion Compensation

作　　者：汪徐德[1] 罗爱平[1] 邓丽琼[1] 徐文成[1] 刘颂豪[1] 

机构地区：[1]华南师范大学信息光电子科技学院光子信息技术实验室,广东广州510006

出　　处：《激光与红外》2007年第4期355-358,共4页Laser & Infrared

基　　金：广东省自然科学基金赞助项目(No.04010397)

摘　　要：文中利用有限差分法对光子晶体光纤的色散补偿特性进行了数值模拟。在常规光子晶体光纤(PCF)的基础上,变化了第二环的空气孔,增加了光子晶体光纤的结构参量变化的自由度。通过数值模拟,研究了新型光子晶体光纤包层结构参量与其色散之间的关系,并且通过优化得出低至-924.6ps/nm/km的色散值,这在常规色散补偿光纤(DCF)中是不可能实现的。并且针对常规单模光纤色散特性,设计出合适κ值的色散补偿光子晶体光纤,色散值为-519.3ps/km/nm,补偿能力远大于常规色散补偿光纤。The dispersion compensating property in photonic crystal fiber （PCF） is simulated with the finite difference method in this paper. The PCF is tailored by changing the radius of the second ring, in order to obtain larger normal dispersion for dispersion compensation. Through numerical simulating, the relations between dispersion and structural parameters are studied. The PCF achieves a negative dispersion of - 924.6ps/nm/km. It is difficult to realize in conventional dispersion compensation fiber （DCF）. Furthermore, according to the dispersion property of the conventional fiber, a k matched dispersion compensation PCF is designed with a dispersion of -519.3ps/km/nm.

关 键 词：光子晶体光纤 色散补偿光纤 有限差分法 

分 类 号：TN253[电子电信—物理电子学]