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长周期光纤光栅透射谱与结构参数关系的研究
  • 期刊名称：光电子.激光, 18 (5), 519~522, May, 2007.
  • 时间：0
  • 分类：TN253[电子电信—物理电子学]
  • 作者机构：[1]南开大学现代光学研究所,天津300071, [2]南开大学物理科学学院,天津300071
  • 相关基金：国家自然科学基金资助项目（60572018,10547121）;天津市科技发展计划资助项目（05YFGPG04900）
  • 相关项目：新型多通道声表面波气体传感器研究
关键词： 长周期光纤光栅(LPG), 耦合模理论, 传输矩阵法, long-period fiber gratings（LPFG） , coupled mode theory, transfer matrix method
中文摘要：

采用光纤的3层模型,从模式理论和耦合理论出发,分析了长周期光纤光栅（LPG）一阶各次包层模和基模的耦合特性。通过分析指出,以往用来区分HF和EH模的2种方法是不等价的。利用传输矩阵法模拟均匀和非均匀情况下LPG的功率透射谱,分析光栅各结构参数对一阶低次包层模与基模耦合的影响。

英文摘要：

Based on the three-layer fiber model,this paper analyzed the characteristics of the coupling of the core mode and the cladding modes of long-period grating（LPG）. We found that the two ways to differentiate the HF modes and EH modes are not equal. And by using the transfer matrix method,the relation of the transmission spectra of uniform and nonuniform LPG and structural parameters were studied.

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