Birefringence Analysis of Ribbon Double-Core Optical Fiber
Birefringence Analysis of Ribbon Double-Core Optical Fiber
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带状双芯光纤的双折射分析
DOI：
10.1166/sl.2012.2452
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发表时间：
2012-07
期刊：
影响因子：
--
通讯作者：
Diao
中科院分区：
文献类型：
--
作者：
Yang, Wenlei;Geng, Tao;Yang, Jun;Diao
分析了带状双芯光纤的双折射特性。带状纤维的横截面视图为矩形。光纤芯位于矩形长边附近，它们相对于矩形中心是对称的。采用有限元方法分析了带状光纤中热应力分布和双折射的影响。结果表明，在带状双芯光纤中，几何双折射是突出的。这主要是由于在光纤的特殊结构下，应力双折射对模双折射的影响很小。综上所述，调整光纤芯与包层表面之间的距离可以提高双折射率值，有助于优化带状双芯光纤的结构设计。
The birefringence characteristics of the ribbon double-core optical fiber are analyzed. The cross section view of the ribbon fiber is a rectangle. The fiber cores locate near the long sides of the rectangle and they are symmetrical respective to the rectangle center. The finite element method was used to analyze the effect of thermal stress distribution and the birefringence in the ribbon fiber. The results show that in ribbon double-core optical fiber, the geometrical birefringence is outstanding. This is mainly due to that the stress birefringence has little influence on mode birefringence in the special structure of the fiber. In the final analysis, adjusting the distance between the core and the cladding surface of the fiber can improve the birefringence value, and it is helpful for optimizing the structure design of the ribbon double-core optical fiber.