短距离弱耦合空分复用实时光传输技术

高宇洋; 李巨浩; 何永琪; 陈章渊

doi:10.11959/j.issn.1000-0801.2022165

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短距离弱耦合空分复用实时光传输技术

专题：未来光通信技术 | 更新时间：2024-06-05

- 短距离弱耦合空分复用实时光传输技术
- Weakly-coupled real-time SDM technology for short-reach optical transmission
- 电信科学 2022年38卷第7期页码：31-36
- 作者机构：
  
  1. 北京大学区域光纤通信网与新型光通信系统国家重点实验室，北京 100871
  2. 鹏城实验室，广东深圳 518055
- 作者简介：
  
  [ "高宇洋（1989- ），男，北京大学在站博士后，主要研究方向为空分复用光器件与光传输" ]
  [ "李巨浩（1978- ），男，北京大学副教授、硕士生导师，主要研究方向为光纤设计与制备、空分复用技术、超高速光传输" ]
  [ "何永琪（1962- ），男，北京大学正高级工程师、博士生导师，主要研究方向为高速光传输与光网络" ]
  [ "陈章渊（1968- ），男，北京大学教授、博士生导师，区域光纤通信网与新型光通信系统国家重点实验室主任，主要研究方向为光传输、微波光子学和光子器件" ]
- 基金信息：
  
  国家自然科学基金资助项目;The National Natural Science Foundation of China(62101009)
- DOI：10.11959/j.issn.1000-0801.2022165
  中图分类号： TP393
- 网络出版日期：2022-07，
  
  纸质出版日期：2022-07-20
- 稿件说明：
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高宇洋, 李巨浩, 何永琪, 等. 短距离弱耦合空分复用实时光传输技术[J]. 电信科学, 2022,38(7):31-36.

Yuyang GAO, Juhao LI, Yongqi HE, et al. Weakly-coupled real-time SDM technology for short-reach optical transmission[J]. Telecommunications science, 2022, 38(7): 31-36.
高宇洋, 李巨浩, 何永琪, 等. 短距离弱耦合空分复用实时光传输技术[J]. 电信科学, 2022,38(7):31-36. DOI： 10.11959/j.issn.1000-0801.2022165.

Yuyang GAO, Juhao LI, Yongqi HE, et al. Weakly-coupled real-time SDM technology for short-reach optical transmission[J]. Telecommunications science, 2022, 38(7): 31-36. DOI： 10.11959/j.issn.1000-0801.2022165.

摘要

短距离光纤传输系统的容量扩展受到越来越广泛的关注。空分复用光传输技术提供了纤芯和模式两个新维度，可以大大提升单根光纤的传输容量。然而空间信道间的串扰严重限制了空分复用技术的实用化。首先研究了弱耦合空分复用光纤，通过在纤芯引入环形折射率微扰的方法实现了模式之间的有效分离；其次，提出了一种可以处理非圆对称简并模式的全光纤复用/解复用器件以及低插损、低串扰扇入扇出器；在此基础上，使用低成本商用强度调制直接检测光模块，实现了短距离弱耦合模分复用及多芯少模复用实时光传输；最后对空分复用实时光传输技术进行了展望。

Abstract

The capacity upgrade of short-reach optical fiber transmission has received more and more attention.Spatial division multiplexing provides two new dimensions of fiber core and mode

which can greatly increase the transmission capacity of a single fiber.However

the crosstalk between spatial channels severely limits the practical application of space division multiplexing technology.To address the problem

a weakly-coupled space-division multiplexing fiber was firstly designed

in which perturbed rings were introduced in the core to increase the effective refractive index difference between LP modes.Secondly

an all-fiber mode multiplexer/demultiplexer that could handle non-circularly symmetric degenerate LP modes was proposed

as well as a low insertion loss and low crosstalk fan-in and fan-out devices.Based on the proposed fiber and devices

the low-cost intensity modulation and direct detection were used to implement the short-reach weakly-coupled mode-division-multiplexing and multi-core and few-mode real-time transmission.Finally

the prospective of space-division multiplexing real-time optical transmission technology was discussed.

关键词

Keywords

references

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