MEMS-metasurface Based Tunable Optical Vortex Lasers for smart free-space communication

用于智能自由空间通信的基于 MEMS 超表面的可调谐光学涡旋激光器

• 批准号: EP/X034542/1
• 负责人: Harald Haas
• 金额: $ 39.64万
• 依托单位: University of Strathclyde
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FX034542%2F1
• 关键词: MEMS; metasurface; Based; Tunable; Optical

META-LiFi will develop a novel optical wireless communication system as a response to the ever-increasing demand for wireless data transmission capabilities. In contrast to traditional approaches to use frequency, time or space to encode information, a new device will be developed that utilises the orbital angular momentum (OAM) of lightwaves as an additional degree of freedom to encode data. To this end, META-LiFi will develop a breakthrough miniaturised OAM emitter, which is suitable for power-efficient operation. Furthermore, it allows for a high degree of adaptability, and has the potential for large-volume production at low cost as well as serving as an enabling device for the next generation of intelligent free-space optical communication and Light-Fidelity (LiFi) networks. The ambitious challenges in relation to the design of the new communication system will be tackled by means of a multipronged approach delivering versatile, diverse, and high-quality OAM light sources that create modes with sufficient modal purity. This feature will be used to develop new adaptive digital data encoding techniques. First, active metasurfaces based on nano-opto-electro-mechanical systems (NOEMS) will be obtained. Second, the control of the wavefront in real-time through on-chip integration of MEMS-enabled active metasurfaces with vertical-cavity surface-emitting lasers (VCSELs) will be adopted for the generation of optical vortex lasers with tuneable topological charges. The proposed vortex lasers will enable a new type of ultra-compact and reconfigurable OAM laser array. This laser array will provide a mechanism for simultaneous transmission of independent data streams through the OAM modes. The number of channels can be dynamically varied which will provide the ability to adjust to varying communication channel conditions. Third, by combining this flexibility with the latest machine learning (ML) techniques supported by advanced artificial neural networks (ANNs), it will be possible to autonomously adapt the device operation to varying conditions stemming from a mobile deployment of the system. For instance, the communication channel may undergo rapid changes because of, for example, random and abrupt transmitter-receiver misalignments and random link blockages. In conclusion, META-LiFi will result in a timely development of intelligent optical wireless communication systems. META-LiFi will enable breakthrough improvements in digital data encoding for free-space communication. Furthermore, it provides a new class of active metasurfaces for integration in a single device. Thereby, META-LiFi will pave the way for high speed, intelligent free-space communications supporting applications across many industrial sectors.

Meta-Lifi将开发一种新型的光学无线通信系统，以响应对无线数据传输能力不断增长的需求。与传统的使用频率，时间或空间编码信息的方法相反，将开发一种新设备，该设备利用LightWaves的轨道角动量（OAM）作为编码数据的额外自由度。为此，Meta-Lifi将开发出突破性的微型OAM发射极，适用于发电的操作。此外，它允许具有高度的适应性，并具有低成本的大型生产的潜力，并可以用作下一代智能自由空间光学通信和轻盈效果（LIFI）网络的能力设备。与新通信系统设计相关的雄心勃勃的挑战将通过多阵行的方法来解决，以提供多功能，多样化和高质量的OAM光源，从而创建具有足够模态纯度的模式。此功能将用于开发新的自适应数字数据编码技术。首先，将获得基于纳米opto-to-Electro机械系统（NOEMS）的主动跨面。其次，通过将具有MEMS的活性跨面积分实时控制具有垂直腔表面发射激光器（VCSEL）的芯片积分，用于生成具有可调拓扑电荷的光学涡流激光器。提出的涡流激光器将启用一种新型的超紧凑和可重新配置的OAM激光阵列。该激光阵列将提供一种通过OAM模式同时传输独立数据流的机制。通道的数量可以动态变化，这将提供适应不同通信通道条件的能力。第三，通过将这种灵活性与由高级人工神经网络（ANN）支持的最新机器学习（ML）技术相结合，可以自主对设备操作的自主调整，以适应系统的移动部署。例如，通信通道可能会发生快速变化，因为例如随机和突然的发射器接收器未对准和随机链接阻塞。总之，Meta-Lifi将及时开发智能光学无线通信系统。 Meta-Lifi将在自由空间通信的数字数据编码中实现突破性的改进。此外，它为单个设备提供了一类新的活动元信息。因此，Meta-Lifi将为许多工业领域的应用程序提供支持的高速，智能自由空间通信铺平道路。

项目成果

Joint Position and Orientation Estimation in VCSEL-Based LiFi Networks: A Deep Learning Approach

• DOI: 10.1109/globecom54140.2023.10436886
• 发表时间: 2023-12
• 期刊: GLOBECOM 2023 - 2023 IEEE Global Communications Conference
• 作者: Rizwana Ahmad;Hossein Kazemi;Elham Sarbazi;Harald Haas