多应力区光纤应力各向异性研究  

Study on the Stress Anisotropy of the Optical Fiber with Multi-Stress Elements

作　　者：黄刘军[1] 季敏宁[1] HUANG Liu-jun JI Min-ning(Institute of Fiber Optics, School of Communication Engineering, Shanghai University, Shanghai 201800, China)

机构地区：[1]上海大学通信学院光纤研究所,上海201800

出　　处：《激光杂志》2017年第4期17-20,共4页Laser Journal

基　　金：基金项:TE模作为基模传输的微结构光子晶体光纤研究(09YZ31)

摘　　要：研究多应力区光纤的应力各向异性振荡特性。首先采用COMSOL Multiphysics软件中的固体力学模块,研究了三应力、四应力、五应力区光纤主应力差的振荡幅度。结果表明,对于呈周期性幅向分布的多应力区,应力区块越多,各向异性周期振荡幅度就越小-三应力区光纤的振荡幅度最大,各向异性程度最高,四应力区次之,五应力区则最小。最后对不同形状应力块的三应力区光纤进行了研究,得到了应力区块的条状程度越高,其主应力差的振荡幅度也越高的结论。这些结论对于提高手征光纤的特性具有重要的意义。The stress anisotropy oscillation characteristics of the optical fiber with multi-stress elements is studied in this paper. Firstly, utilizing the solid mechanics module in COMSOL Multiphysics software, the periodic oscillation amplitude of the principal stress difference in the multi-stress elements optical fiber, such as the three stress elements, four stress elements and five stress elements fiber, are studied. The result shows that the more stress blocks, the lower amplitude of the anisotropic periodic oscillation when the stress elements are periodically distributed. The oscillation amplitude with three stress elements is the largest and the anisotropic degree is the highest, followed by fourth stress el- ements and then by five stress elements. Finally, the three stress elements optical fiber in different shape stress ele- ment blocks are considered. The result shows that the higher rectangularity degree of the stress elements, the higher oscillation amplitude of the principal stress difference. These conclusions are significant to improve the chiral optical fi- ber properties.

关 键 词：多应力区光纤 各向异性振荡特性 主应力差 条状程度 

分 类 号：TN253[电子电信—物理电子学]