The increasing demands of power supply and data rate for mobile devices promote the research of simultaneous wireless information and power transfer (SWIPT). Optical SWIPT, as known as simultaneous light information and power transfer (SLIPT), has the potential for providing high-capacity communication and high-power wireless charging. However, SLIPT technologies based on light-emitting diodes have low efficiency due to energy dissipation over the air. Laser-based SLIPT technologies need strict positioning accuracy and scanning resolution, which may lead to the increase of costs and complexity. In this paper, we propose a mobile SLIPT scheme based on spatially separated laser resonator (SSLR) and intra-cavity second harmonic generation. The power and data are transferred via separated frequencies, while they share the same self-aligned resonant beam path, without the needs of receiver positioning and beam steering. We establish the analysis model of the resonant beam power and its second harmonic power. Numerical results show that the proposed system can achieve watt-level battery charging power and above 10-bit/s/Hz achievable rate at 6-m distance, which satisfies the requirements of most indoor mobile devices.

中文翻译：

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高功率和大容量移动SLIPT方案的性能


移动设备对电源和数据速率日益增长的需求促进了同步无线信息和电力传输（SWIPT）的研究。光学SWIPT，也称为同步光信息和电力传输（SLIPT），具有提供高容量通信和高功率无线充电的潜力。然而，基于发光二极管的SLIPT技术由于能量在空气中耗散而效率较低。基于激光的SLIPT技术需要严格的定位精度和扫描分辨率，这可能导致成本和复杂性的增加。在本文中，我们提出了一种基于空间分离激光谐振器（SSLR）和腔内二次谐波生成的移动SLIPT方案。功率和数据通过单独的频率传输，同时它们共享相同的自对准谐振光束路径，无需接收器定位和波束控制。建立了谐振束功率及其二次谐波功率的分析模型。数值结果表明，该系统可以在6米距离内实现瓦级电池充电功率和10bit/s/Hz以上的速率，满足大多数室内移动设备的要求。