矩形点阵微结构聚合物光纤偏振特性研究  

Polarization Properties of Rectangular Lattice Microstructured Polymer Optical Fiber

作　　者：张亚妮[1] 

机构地区：[1]宝鸡文理学院物理系,陕西宝鸡721007

出　　处：《光子学报》2009年第1期34-38,共5页Acta Photonica Sinica

基　　金：国家第43批博士后基金(20080431258);陕西省自然科学基金(2007A18);陕西省教育厅自然科学专项基金(08JK214);宝鸡市科技攻关项目(07KG04-2);宝鸡文理学院重点项目(zk0841)资助

摘　　要：采用全矢量平面波方法,以聚合物为基材,研究了矩形点阵微结构聚合物光纤的传输模场和偏振性质.结果发现,矩形点阵微结构聚合物光纤基模两个正交偏振态不再简并,模场呈现类矩形且具有较强的线偏振特性;该光纤模式双折射产生于包层孔结构分布的不对称性,减小包层纵向孔间隔和横向孔间隔之比η值,双折射明显增强,适当调节η,可在更宽频带范围内实现高双折射单模运行.The modal field and polarization properties of rectangular lattice microstructured polymer optical fiber were investigated by adopting full vectorial plane-wave method. According to the theory results, the two orthogonal polarized states of the fundamental mode become non-degenerate in this fiber and modal fields are quasi rectangular with appearing strongly linear polarization. And, the birefringence of the fiber was found to be due to the asymmetry of cladding structure. If the rate η between lognitudinal and transverse holes-spacing is reduced, the birefringence will increase strongly. The high birefringence and single-mode region in the fibers ean be obtained by adjusting η.

关 键 词：导波与光纤光学 双折射 矩形点阵 聚合物 

分 类 号：TN929.11[电子电信—通信与信息系统]