新型光接收系统架构：应用于超大容量低成本的短距光互连

doi:10.11959/j.issn.1000-0801.2022159

电信科学 ›› 2022, Vol. 38 ›› Issue (7): 43-56.doi: 10.11959/j.issn.1000-0801.2022159

• 专题：未来光通信技术 • 上一篇下一篇

新型光接收系统架构：应用于超大容量低成本的短距光互连

计红林¹, 李雪阳¹, 贺志学¹, 胡卫生¹^,², William Shieh³

¹ 鹏城实验室先进承载网络技术研究所，广东深圳 518055
² 上海交通大学区域光纤通信网与新型光通信系统国家重点实验室，上海 200240
³ 墨尔本大学电气与电子工程系，澳大利亚墨尔本 3010

修回日期:2022-06-24 出版日期:2022-07-20 发布日期:2022-07-01
作者简介:计红林（1990- ），男，博士，鹏城实验室助理研究员，主要研究方向为大容量相干光传输系统、未来先进光网络系统架构、硅光芯片集成、移动前传和光纤传感等
李雪阳（1991- ），男，博士，鹏城实验室助理研究员，主要研究方向为高速短距光互连系统架构、信号处理算法、光芯片以及光无线通信等
贺志学（1983- ），男，博士，鹏城实验室研究员，主要研究方向为高速长距离光传输技术等
胡卫生（1964- ），男，博士，鹏城实验室研究员，上海交通大学教授，主要研究方向为全光通信网与光交换、高速光接入与移动前传等
William Shieh（1967— ），男，博士，墨尔本大学教授，主要研究方向为光通信和传感的少模光纤以及高级调制格式等
基金资助:
国家重点研发计划项目(2020YFB1806400);鹏城实验室自立项目(PCL2021A04);鹏城实验室自立项目(PCL2022AS13)

Advanced optical receiver architectures for ultra-high capacity but low-cost short-reach optical interconnects

Honglin JI¹, Xueyang LI¹, Zhixue HE¹, Weisheng HU¹^,², Shieh William³

¹ Institute of advanced bearer network, Peng Cheng Laboratory, Shenzhen 518055, China
² State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai 200240, China
³ Department of Electrical and Electronic Engineering, The University of Melbourne, MelbourneVIC 3010, Australia

Revised:2022-06-24 Online:2022-07-20 Published:2022-07-01
Supported by:
The National Key Research and Development Program of China(2020YFB1806400);Peng Cheng Laboratory Self-established Program(PCL2021A04);Peng Cheng Laboratory Self-established Program(PCL2022AS13)

摘要/Abstract

摘要：

大规模数据中心等新兴网络基础设施的部署急需超大容量低成本的短距光互连系统。传统的直调直检系统拥有简单的接收机结构，但只能检测信号的强度信息，这限制了其系统容量的进一步扩展。经典的相干传输系统能够调制解调高阶信号进而实现大容量传输，但收/发端都需要昂贵的窄线宽激光器和高复杂度的数字信号处理，这阻碍了其在短距光互连中的广泛应用。新型的直接检测光接收系统旨在结合直接检测和相干检测两者的优点，弥补二者之间的研究空白。因此，新型的光接收系统架构主要基于自相干检测。介绍了新型单偏振、双偏振、少模光接收系统架构。该类新型的光接收系统不需要本振激光器且能通过直接检测恢复光场信号，实现超大容量低成本的短距光互连。

关键词: 短距光互连, 直接检测, 自相干检测, 自零差相干检测, 模分复用传输

Abstract:

The deployment of emerging network infrastructure such as hyper-scale datacenters urgently requires ultra-high capacity but low-cost short-reach optical interconnects.Conventional intensity modulation and direct detection possesses a simple receiver structure but can only recover the intensity information, which restrains the capability of further scaling up the system capacity.Standard coherent detection can deliver high-order modulation formats and achieve high-capacity transmission.Nevertheless, the coherent transceiver requiring expensive narrow-linewidth laser sources and computation-intensive digital signal processing precludes its wide applications in short-reach systems.The advanced direct-detection optical receivers aim to combine the advantages of both direct detection and coherent detection and bridge the gap between them.Therefore, the advanced optical receivers are mainly based on self-coherent detection.Advanced single-polarization, dual-polarization, and few-mode optical receiver architectures wereintroduced.The proposed advanced optical receivers can retrieve the optical field via direct detection without using the narrow-linewidth lasers, which enables the realization of ultra-high capability but low-cost short-reach optical interconnects.

Key words: short-reach optical interconnects, direct detection, self-coherent detection, self-coherent homodyne detection, mode-division multiplexing transmission

中图分类号:

TP393

计红林, 李雪阳, 贺志学, 胡卫生, William Shieh. 新型光接收系统架构：应用于超大容量低成本的短距光互连[J]. 电信科学, 2022, 38(7): 43-56.

Honglin JI, Xueyang LI, Zhixue HE, Weisheng HU, Shieh William. Advanced optical receiver architectures for ultra-high capacity but low-cost short-reach optical interconnects[J]. Telecommunications Science, 2022, 38(7): 43-56.

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新型光接收系统架构：应用于超大容量低成本的短距光互连

Advanced optical receiver architectures for ultra-high capacity but low-cost short-reach optical interconnects

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