Effects of Ellipticity on OAM Modes in a Ring Fiber Transmission

ZHANG Li-li; ZHANG Xia; BAI Cheng-lin

doi:10.13756/j.gtxyj.2018.02.011

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Effects of Ellipticity on OAM Modes in a Ring Fiber Transmission

- Effects of Ellipticity on OAM Modes in a Ring Fiber Transmission
- Study on Optical communication Issue 2, Pages: 36-39(2018)
- 作者机构：
  
  1. 聊城大学物理科学与信息工程学院
  2. 山东省光通信科学与技术重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2018.02.011
  CLC： TN929.11
- Published：2018，
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[1]张丽丽,张霞,白成林.环状光纤不圆度对OAM模式传输性能的影响[J].光通信研究,2018(02):36-39.

ZHANG Li-li, ZHANG Xia, BAI Cheng-lin. Effects of Ellipticity on OAM Modes in a Ring Fiber Transmission. [J]. (2):36-39(2018)
[1]张丽丽,张霞,白成林.环状光纤不圆度对OAM模式传输性能的影响[J].光通信研究,2018(02):36-39. DOI： 10.13756/j.gtxyj.2018.02.011.

ZHANG Li-li, ZHANG Xia, BAI Cheng-lin. Effects of Ellipticity on OAM Modes in a Ring Fiber Transmission. [J]. (2):36-39(2018) DOI： 10.13756/j.gtxyj.2018.02.011.

摘要

围绕下一代光纤通信系统中轨道角动量（OAM）复用技术的关键问题

基于环状光纤中携带OAM的模式基础理论

仿真分析了环状光纤的不圆度对矢量合成OAM模式的本征奇模和偶模的有效折射率、走离长度以及模场强度分布的影响。结果表明

环状光纤不圆度会使得本征模式奇偶模之间的有效折射率差增大

走离长度减小

导致相应OAM模式在环状光纤中传输时稳定性下降。同时

不圆度的存在还会使矢量合成OAM模式的各本征模式的模场强度分布发生畸变

模场泄漏加剧。

Abstract

In this paper

the key issues of Orbital Angular Momentum（OAM）multiplexing technologies in next generation optical communication systems is studied.Based on the theory of optical modes carrying OAM in a ring fiber

we study the influence of the ellipticity of the ring fiber on the effective refractive indices

walk-off length and model intensity profiles of the odd and even eigenmodes that form the basis of the OAM modes.Our results show that the effective refractive index difference between the odd and even modes of the same OAM mode increase with the ellipticity

thus reducing the stability of the corresponding OAM mode during propagation.Moreover

with the existence of ellipticity

the intensity profiles of the odd and even eigenmodes are distorted and the leakage of the mode field is intensified.

关键词

光纤通信轨道角动量不圆度模式走离

Keywords

Optical communicationsorbital angular momentumellipticitymodel walk-off

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School of Optoelectronic Engineering,Nanjing University of Posts and Telecommunications

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