椭圆孔正方形点阵聚合物光子晶体光纤偏振特性  

Polarization properties of polymer photonic crystal fiber with square-lattice elliptical air-hole

作　　者：刘飞[1] 高红艳[1] 张亚妮[1] 

机构地区：[1]宝鸡文理学院物理与信息技术系,陕西宝鸡721007

出　　处：《激光与红外》2010年第10期1083-1087,共5页Laser & Infrared

基　　金：国家第43批博士后科学基金(No.20080431258);陕西省教育厅自然科学专项基金(No.08JK214);宝鸡文理学院重点项目(No.ZK0916;ZK0841)资助

摘　　要：以聚合物为基材,设计了一种单模零走离参数的高双折射光子晶体光纤,该光纤具有椭圆孔正方形点阵,基于全矢量平面波方法,对其传输模场和偏振特性进行了数值模拟。结果发现,与传统的光子晶体光纤相比,该光纤具有更大的模式双折射和走离参数,当增长光纤结构参数椭圆孔长短轴之比η时,双折射明显增强并高达3.5×10-2,走离参数在低频区出现零走离点,这为在该光纤中即保持高双折射又实现零走离单模运转提供了可能。A novel type of photonic crystal fiber for high birefringence and zero-walkoff is proposed based on polymer,the fiber is composed of a solid polymer core and a cladding with square lattice elliptical air-holes along the fiber length.The filed mode and polarization properties of the proposed fiber were simulated numerically by adopting full vectorial plane-wave method.Simulations indicate that the proposed fiber has a larger birefringence and walkoff parameter than the traditional photonic crystal fiber.If the rate between long and short axis of elliptical air-holes is increased,the birefringence will increase dramatically and approach to 3.5×10^-2,and a zero walkoff point was occurred at the low frequency region.So,it is possible that the single mode operation can be achieved for the proposed fiber with high birefringence and zero walkoff at a given wavelength.

关 键 词：导波光学 偏振特性 高双折射 光子晶体光纤 

分 类 号：TN929.11[电子电信—通信与信息系统]