Beyond Exabit Optical Communications: towards transceiver integration

超越 Exabit 光通信：迈向收发器集成

• 批准号: MR/Y034260/1
• 负责人: Filipe Marques Ferreira
• 金额: $ 75.6万
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2024
• 资助国家: 英国
• 起止时间: 2024 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=MR%2FY034260%2F1
• 关键词: Beyond; Exabit; Optical; Communications; towards

The aim of this fellowship is to develop disruptive approaches through theory and experiment to unlock the capacity of future information systems. To go beyond current optical fibre channel limits is arguably the greatest challenge faced by digital optical communications. To target it, the proposed research will combine techniques from information theory, coding, higher-dimensional modulation formats, digital signal processing, advanced photonic design, and machine learning to make possible breakthrough developments to ensure a robust communications infrastructure beyond tomorrow.Optical communications have to-date been able to fulfil the ever-growing data demand whilst simultaneously reducing cost and energy-per bit. However, optical communications have now exceeded the fundamental capacity of existing single-mode technology a trend leading to a rapid duplication of line systems which in time will translate in less affordable broadband access. To meet future demands with prospective cost and energy savings and avoid the impending exhaust of fibre capacity, this fellowship offers a scalable path towards parallelism in optical fibre communications resembling the advent of parallel computing using multiple cores to sustain Moore's law - once we were unable to double the number of transistors in a single-core microprocessor. The emergent technology of spatial division multiplexing (SDM) provides much wider conduits of information by offering additional means for transporting channels over one single fibre, using multi-mode and multi-core fibres. The fellow has shown that the internal structure of optical fibres can be optimised to support thousands of different spatial paths, each with full transmission capacity. And, critically, that there are principal launching conditions that allow for full transmission rate over each path with a small fraction of the equalisation cost assumed before. These discoveries offer the potential to foster a revolution in how optical fibre communications networks operate to meet the ever-increasing traffic demand with decreasing cost and energy consumption per bit, enabling ubiquitous and universal broadband access.This fellowship renewal envisages how to achieve chip-scale integration for multimode SDM transceivers packing intelligent optical beamforming powered by generalised machine learning and principled digital signal processing for highly spatially diverse fibre channels. Moreover, this fellowship renewal will initiate a new class of low crosstalk multi-mode fibres using elliptical cores and a new class of multimode optical fibre amplifiers with adaptive mode gain profile - opening fundamentally new theoretical and experimental possibilities up to now unexplored for SDM systems. These new developments will push multimode SDM technology far beyond that of the standard single-mode fibre infrastructure and bring it to an industry-ready development stage, unlocking decades of capacity growth in future optical networks with sustainable cost- and energy-per-bit.

该奖学金的目的是通过理论和实验开发破坏性的方法，以释放未来信息系统的能力。超越当前的光纤通道限制可以说是数字光学通信面临的最大挑战。为了实现目标，拟议的研究将结合信息理论，编码，高维调制格式，数字信号处理，高级光子设计和机器学习的技术，以使可能的突破性开发以确保明天以后的稳健通信基础设施。光能通信已经能够付诸实践，并且能够满足不断增长的数据需求，并同时重新恢复成本和能量成本。但是，光学通信现在已经超过了现有的单模技术的基本能力，一种趋势，导致线条系统的快速重复，这将及时转化为负担得起的宽带访问。为了满足未来的需求，并节省了前瞻性的成本和节能，并避免了纤维容量的耗尽，该奖学金为光纤通信的可扩展路径提供了可扩展的途径，类似于使用多个核心来维持摩尔定律的平行计算的出现 - 一旦我们无法将单核微prouperocessor中的跨晶体管数量翻倍。空间分层多路复用（SDM）的新兴技术通过使用多型和多核纤维在一个单个光纤上运输频道的其他手段来提供更多的信息管道。该研究员表明，可以优化光纤的内部结构，以支撑数千个不同的空间路径，每道空间路径具有完全的传输能力。而且，至关重要的是，有一些主要的发射条件允许在每条路径上完全传输速率，而以前假定的均等成本的一小部分。这些发现提供了促进革命的潜力空间多样的纤维通道。此外，该奖学金更新将使用椭圆形芯和具有自适应模式增益曲线的新的低串扰多模式纤维启动新的低串扰多模式纤维 - 从根本上讲，它从根本上开放了新的理论和实验性可能性，直到现在无法为SDM Systems开发。这些新的开发将使多模SDM技术远远超出了标准的单模光纤基础架构，并将其带入了行业准备就绪的开发阶段，在未来的光学网络中释放了数十年的能力增长，并具有可持续的成本和每位能源。