Dispersion Calculation for Graded-Index Single-Mode Optical Fibers by Equivalent Step-Index Fiber Method

Fan Chong-cheng Liu Jia

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Dispersion Calculation for Graded-Index Single-Mode Optical Fibers by Equivalent Step-Index Fiber Method

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- Dispersion Calculation for Graded-Index Single-Mode Optical Fibers by Equivalent Step-Index Fiber Method
- Acta Electronica Sinica Issue 5, Pages: 43-49(1983)
- 作者机构：
  
  清华大学无线电电子学系
- 作者简介：
- 基金信息：
- DOI：
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- Published：1983
- 稿件说明：
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[1]范崇澄,刘佳.用等效阶跃光纤法求一类单模弱导光纤的色散[J].电子学报,1983(05):43-49.

Fan Chong-cheng Liu Jia. Dispersion Calculation for Graded-Index Single-Mode Optical Fibers by Equivalent Step-Index Fiber Method[J]. Acta Electronica Sinica, 1983, (5): 43-49.
[1]范崇澄,刘佳.用等效阶跃光纤法求一类单模弱导光纤的色散[J].电子学报,1983(05):43-49. DOI：

Fan Chong-cheng Liu Jia. Dispersion Calculation for Graded-Index Single-Mode Optical Fibers by Equivalent Step-Index Fiber Method[J]. Acta Electronica Sinica, 1983, (5): 43-49. DOI：

摘要

本文提出用A（v）和vdA（v）/dv来描述弱导光纤LP模式的比群延及波导色散

用它们比用d（bv）/dv和vd

（bv）/dv

更为准确。当折射率分布为幂函数时

还推导了单模弱导光纤的u的导数公式。本方法可推广到折射率分布能分段解析表达的情况

从而提供了在一定条件下直接计算此类光纤色散的一种方案。本文也讨论了零色散单模光纤的参数选择。

Abstract

Parameters A（v） and vdA（v）/dv are proposed in this paper to characterize the specific group delay and waveguide dispersion of LP modes in weakly-guiding optical fibers. They are more accurate than d（bv）/dv and vd

（bv）/dv

. Analytic expressions for u and its derivatives of single-mode fibers with power-law index profile have been derived

which offers an alternative approach of direct dispersion calculation for these fibers. This method could be extended to fibers with piecewise analytically expressable index profile. Fiber parameters for zero-dispersion are also discussed in brief.

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