短距离弱耦合空分复用实时光传输技术

doi:10.11959/j.issn.1000-0801.2022165

电信科学 ›› 2022, Vol. 38 ›› Issue (7): 31-36.doi: 10.11959/j.issn.1000-0801.2022165

• 专题：未来光通信技术 • 上一篇下一篇

短距离弱耦合空分复用实时光传输技术

高宇洋¹, 李巨浩¹^,², 何永琪¹, 陈章渊¹^,²

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

修回日期:2022-07-08 出版日期:2022-07-20 发布日期:2022-07-01
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
基金资助:
国家自然科学基金资助项目(62101009)

Weakly-coupled real-time SDM technology for short-reach optical transmission

Yuyang GAO¹, Juhao LI¹^,², Yongqi HE¹, Zhangyuan CHEN¹^,²

¹ State Key Laboratory of Advanced Optical Communication Systems and Networks, Peking University, Beijing 100871, China
² Peng Cheng Laboratory, Shenzhen 518055, China

Revised:2022-07-08 Online:2022-07-20 Published:2022-07-01
Supported by:
The National Natural Science Foundation of China(62101009)

摘要/Abstract

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。

关键词: 少模光纤, 空分复用, 实时光传输

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.

Key words: few-mode fiber, space-division multiplexing, real-time optical transmission

中图分类号:

TP393

高宇洋, 李巨浩, 何永琪, 陈章渊. 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, Zhangyuan CHEN. Weakly-coupled real-time SDM technology for short-reach optical transmission[J]. Telecommunications Science, 2022, 38(7): 31-36.

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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

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