Multi-Receiver Transmission Analysis for Mobile SLIPT Using Resonant Beam

Simultaneous lightwave information and power transfer (SLIPT) technology offers a promising solution to address the communication and power demands of Internet of Things (IoT) devices. The resonant beam (RB) system, based on the self-aligning properties of a spatially separated laser resonator (SSLR), enables energy transmission without precise alignment. However, existing RB-based SLIPT systems are limited to single-receiver configurations. This work introduces a multi-receiver RB-SLIPT system capable of simultaneously transmitting energy and information to multiple receivers. An analytical model based on multi-mode rate equations and diffraction transmission theory is developed to evaluate the energy transfer and communication performance in multi-receiver scenarios. Numerical simulation results demonstrate that in a dual-receiver scenario, the proposed system is capable of transmitting 2 W of optical power to each receiver while achieving a communication capacity of 5.8 bit/s/Hz.