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Advanced optical receiver architectures for ultra-high capacity but low-cost short-reach optical interconnects
- Telecommunications Science Vol. 38, Issue 7, Pages: 43-56(2022)
- 作者机构：
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
- 作者简介：
- 基金信息：
DOI：10.11959/j.issn.1000-0801.2022159
CLC： TP393-
Published Online：2022-07，
Published：20 July 2022
- 稿件说明：
移动端阅览
Honglin JI, Xueyang LI, Zhixue HE, et al. Advanced optical receiver architectures for ultra-high capacity but low-cost short-reach optical interconnects[J]. Telecommunications science, 2022, 38(7): 43-56.
Honglin JI, Xueyang LI, Zhixue HE, et al. Advanced optical receiver architectures for ultra-high capacity but low-cost short-reach optical interconnects[J]. Telecommunications science, 2022, 38(7): 43-56. DOI： 10.11959/j.issn.1000-0801.2022159.
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。
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.
关键词
Keywords
references
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