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基于极化电流概念对光纤布拉格光栅耦合模理论的分析
引用本文:门志伟,房文汇,刘晶,杨宏,张喜和,王兆民. 基于极化电流概念对光纤布拉格光栅耦合模理论的分析[J]. 长春理工大学学报(自然科学版), 2007, 30(1): 37-39
作者姓名:门志伟  房文汇  刘晶  杨宏  张喜和  王兆民
作者单位:长春理工大学,理学院,长春,130022;长春理工大学,理学院,长春,130022;长春理工大学,理学院,长春,130022;长春理工大学,理学院,长春,130022;长春理工大学,理学院,长春,130022;长春理工大学,理学院,长春,130022
摘    要:根据耦合模理论的理想近似,把光纤光栅区域的电场横向分量看作无微扰的很多理想模式的叠加,将光纤光栅的折射率的周期变化视为介电常数的微扰,在此用运极化电流概念下的模式耦合系数,对耦合模方程进行化简,进而求出反射率、布拉格反射波长的特征参数的表达式,理论计算与实验结果符合良好,从而证明理论的正确性。

关 键 词:光纤布拉格光栅  模式耦合  极化电流
文章编号:1672-9870(2007)01-0037-03
收稿时间:2006-08-10
修稿时间:2006-08-10

Study on the Coupled- mode Theory of Fiber Bragg Grating Based on the Conception of the Polarization Current
MEN Zhiwei,FANG Wenhui,LIU Jing,YANG Hong,ZHANG Xihe,WANG Zhaomin. Study on the Coupled- mode Theory of Fiber Bragg Grating Based on the Conception of the Polarization Current[J]. Journal of Changchun University of Science and Technology, 2007, 30(1): 37-39
Authors:MEN Zhiwei  FANG Wenhui  LIU Jing  YANG Hong  ZHANG Xihe  WANG Zhaomin
Abstract:Based on the ideal approximation of the coupled-mode theory,the transverse component of the electrical field was regarded as the superposition of the non-perturbation some ideal mode,the periodic change of FBG's refractive index was regarded as the perturbation of the dielectric constant,coupled-mode coefficient of the polarization current 's conception was used,predigest the equation of coupled-mode,solved the refractive index and the characteristic parameter expression of FBG's reflection wavelength,the theoretical calculation results are coincident with the experimental results.The theory is demonstrated correct.
Keywords:fiber Bragg grating  coupled-mode  polarization current
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