Mobility-Enhanced Simultaneous Lightwave Information and Power Transfer

TL;DR

This paper introduces a resonant beam-based SLIPT system that enables high-power energy transfer and high-rate data communication with mobile receivers over a short distance, addressing key challenges in IoT applications.

Contribution

The paper proposes a novel RB-SLIPT system that combines energy and data transfer with mobile positioning, overcoming limitations of existing SLIPT schemes.

Findings

Delivers 5 W charging power at 3 m distance

Achieves 1.5 Gbit/s data rate within 20-degree FOV

Supports simultaneous high-power transfer and high-rate data communication

Abstract

Simultaneous lightwave information and power transfer (SLIPT) has been regarded as a promising technology to deal with the ever-growing energy consumption and data-rate demands in the Internet of Things (IoT). We propose a resonant beam based SLIPT system (RB-SLIPT), which deals with the conflict of high deliverable power and mobile receiver positioning with the existing SLIPT schemes. At first, we establish a mobile transmission channel model and depict the energy distribution in the channel. Then, we present a practical design and evaluate the energy/data transfer performance within the moving range of the RB-SLIPT. Numerical evaluation demonstrates that the RB-SLIPT can deliver 5 W charging power and enable 1.5 Gbit/s achievable data rate with the moving range of 20-degree field of view (FOV) over 3 m distance. Thus, RB-SLIPT can simultaneously provide high-power energy and high-rate data transfer, and mobile receiver positioning capability.