用准导模法分析单模光纤的模耦合损耗

吴金良; 白崇恩

doi:10.13756/j.gtxyj.1991.04.003

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用准导模法分析单模光纤的模耦合损耗

- 用准导模法分析单模光纤的模耦合损耗
- Analysis of Mode Coupling Loss of SM Optical Fiber by Quasi-guided Mode Method
- 光通信研究 1991年第4期页码：24-33
- 作者机构：
  
  1. 武汉邮电科学研究院光纤光缆部检测室
  2. 武汉邮电科学研究院退休主任高级工程师
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.1991.04.003
  中图分类号：
- 纸质出版日期：1991，
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[1]吴金良,白崇恩.用准导模法分析单模光纤的模耦合损耗[J].光通信研究,1991(04):24-33+37.

Wu Jinliang Bai Chongen. Analysis of Mode Coupling Loss of SM Optical Fiber by Quasi-guided Mode Method[J]. 1991,(4):24-33.
[1]吴金良,白崇恩.用准导模法分析单模光纤的模耦合损耗[J].光通信研究,1991(04):24-33+37. DOI： 10.13756/j.gtxyj.1991.04.003.

Wu Jinliang Bai Chongen. Analysis of Mode Coupling Loss of SM Optical Fiber by Quasi-guided Mode Method[J]. 1991,(4):24-33. DOI： 10.13756/j.gtxyj.1991.04.003.

摘要

本文用等效电流法将不规则的单模光纤看成是有源的理想光纤

求出极化电流场

并认为光纤损耗是由极化电流激发的准导模产生的。本文将准导模的概念用于等效电流法来求取单模光纤的模耦合损耗。这种方法脱离了耦合波的概念

但物理意义明确

方法简洁。

Abstract

In this paper

an alternative way is used as equivalent current method by which a nonideal fiber can be viewed as an ideal fiber in the presence of polarization currents giving rise to electromagnetic fields

and the loss of a fiber is considered to be caused by quasi-guided modes excited by polarization currents. The concept of quasi-guided mode is applied in equivalent current method to calculate the loss of a single mode fiber caused by mode conversion. It is an alterna tive method of coupled mode theory without any concerning of mode coupling

but is mathematically simpler and physically more intuitive than the coupled mode theory.

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