• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optical fiber technology >Semi-analytical approach for calculation of intercore crosstalk in multicore fibers
【24h】

Semi-analytical approach for calculation of intercore crosstalk in multicore fibers

机译：多芯纤维闭孔串扰计算的半分析方法

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper, a semi-analytical method to calculate intercore crosstalk (ICXT) in bent and twisted multicore fibers (MCFs) is proposed. The modified refractive index of bent MCF is first computed using geometrically exact beam theory (GEBT) and conformal mapping technique. The computed refractive index profile is used to obtain mode field profiles of bent MCF by solving the wave equation using vectorial finite element method in COMSOL. To take twisting of MCF into account, outer cores of the MCF are approximated to be helically bent around the central core. Using the mode field profiles, mode coupling coefficient between the MCF cores is calculated for different bend radii which is then used to calculate ICXT by using closed form analytical expressions reported in the literature. The ICXT values obtained using our proposed approach are in very good agreement with the experimental values reported in the literature. The effect of change in core pitch and change in relative refractive index contrast of MCF on the mode coupling coefficient between the MCF cores is analysed. The influence of twisting rate of MCF on the ICXT values for different bend radii is studied and it is shown that, ICXT is constant with respect to twisting rate of MCF for bending radii greater than the critical bending radius of the MCF. The proposed approach is also extended to calculate ICXT between different modes of trench assisted few-mode MCF (FM-MCF). The ICXT values obtained for the trench assisted FM-MCF follow the expected trend.
机译：在本文中，提出了一种在弯曲和扭曲的多芯纤维（MCF）中计算互核串扰（ICXT）的半分析方法。首先使用几何精确光束理论（GEBT）和保形映射技术来计算弯曲MCF的修改折射率。计算的折射率分布用于通过在COMSOL中求解波动方程来获得弯曲MCF的模式现场轮廓。要考虑MCF的扭曲，MCF的外核近似以螺旋地弯曲在中央核心周围。使用模式字段配置文件，针对不同的弯曲半径计算MCF核之间的模式耦合系数，然后通过使用文献中报告的闭合形式分析表达来计算ICXT来计算ICXT。使用我们所提出的方法获得的ICXT值与文献中报告的实验值非常好。分析了MCF在MCF核心模式中MCF对MCF相对折射率对比度的核心间距和变化的影响。研究了MCF在不同弯曲半径的ICXT值上的影响，示出了相对于MCF的扭曲率大于MCF的临界弯曲半径的MCF的扭曲率是恒定的。建议的方法也扩展到计算不同模式之间的ICXT辅助几模式MCF（FM-MCF）。为沟槽辅助FM-MCF获得的ICXT值遵循预期的趋势。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号