Resonant Beam Communications: Principles and Designs

Xiong, Mingliang; Liu, Qingwen; Wang, Gang; Giannakis, Georgios B.; Huang, Chuan

doi:10.1109/mcom.001.1900419

Cited by 33 publications

(20 citation statements)

References 14 publications

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“…Resonant beam communication (RBCom) system with highcapacity channel was illustrated in [18]. The primary structure of SSLR origins from Lindford's very long laser cavity which has two oppositely-placed corner cube retroreflectors [19].…”

Section: Self-alignedmentioning

confidence: 99%

Performance of a High Power and Capacity Mobile SLIPT Scheme

Xiong,

Liu,

Zhou

et al. 2021

Preprint

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The increasing demands of power supply and data rate for mobile devices promote the research of simultaneous information and power transfer (SWIPT). Optical SWIPT, as known as simultaneous light information and power transfer (SLIPT), can provide high-capacity communication and highpower charging. However, light emitting diodes (LEDs)-based SLIPT technologies have low efficiency due to energy dissipation over the air. Laser-based SLIPT technologies face the challenge in mobility, as it needs accurate positioning, fast beam steering, and real-time tracking. In this paper, we propose a mobile SLIPT scheme based on spatially separated laser resonator (SSLR) and intra-cavity second harmonic generation (SHG). 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. We also evaluate the system performance on deliverable power and channel capacity. Numerical results show that the proposed system can achieve watt-level battery charging power and above 20-bit/s/Hz communication capacity over 8-m distance, which satisfies the requirements of most indoor mobile devices.

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Section: Self-alignedmentioning

confidence: 99%

Performance of a High Power and Capacity Mobile SLIPT Scheme

Xiong,

Liu,

Zhou

et al. 2021

Preprint

Self Cite

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“…The self-aligned mobility and the safety of the SSLR for high-power transmission were verified in [20] and [21], respectively. The application of communications using SSLR was illustrated in [22]. Since the resonant beam oscillates in the cavity, the modulated signal will also be reflected by the retroreflectors, which may result in echo interference.…”

Section: Fig 2: Technologies Comparison On Optical Wireless Communica...mentioning

confidence: 99%

Mobile Optical Communications Using Second Harmonic of Intra-Cavity Laser

Xiong,

Liu,

Wang

et al. 2021

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Optical wireless communication (OWC) meets the demands of the future six-generation mobile network (6G) as it operates at several hundreds of Terahertz and has the potential to enable data rate in the order of Tbps. However, most beam-steering OWC technologies require high-accuracy positioning and high-speed control. Resonant beam communication (RBCom), as one kind of nonpositioning OWC technologies, has been proposed for high-rate mobile communications. The mobility of RBCom relies on its self-alignment characteristic where no positioning is required. In a previous study, an external-cavity second-harmonic-generation (SHG) RBCom system has been proposed for eliminating the echo interference inside the resonator. However, its energy conversion efficiency and complexity are of concern. In this paper, we propose an intra-cavity SHG RBCom system to simplify the system design and improve the energy conversion efficiency. We elaborate the system structure and establish an analytical model. Numerical results show that the energy consumption of the proposed intra-cavity design is reduced to reach the same level of channel capacity at the receiver compared with the external-cavity one.

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“…Resonant beam has been proposed as the carrier of wireless charging and communications for its advantages including high power, self-alignment mobility, and intrinsic safety [14,15]. Using the resonant beam, electronic devices can be charged remotely while moving and simultaneously be supported with high-rate date transfer, as shown in Fig.…”

Section: Information Powermentioning

confidence: 99%

Optimization of A Mobile Optical SWIPT System With Asymmetric Spatially Separated Laser Resonator

Xiong,

Liu,

Zhou

2021

Preprint

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High-power and high-capacity simultaneous wireless information and power transfer (SWIPT) becomes more and more important with the development of Internet of Things technologies. Optical SWIPT, also known as simultaneous light information and power transfer (SLIPT), has unique advantages such as abundant spectrum resources and low propagation divergence, compared with RF technologies. However, optical SWIPT faces many challenges in beam steering and receiver positioning/tracking. Resonant beams generated by spatially separated laser resonators (SSLR) have many advantages, including high power, self-aligned mobility, and intrinsic safety. It has been proposed as the carrier of wireless charging and communication. Using resonant beams, mobile electronic devices can be remotely charged and supported with high-rate data transfer. In this paper, we propose a mobile optical SWIPT system based on asymmetric SSLR and present the system optimization procedure. We also determine the boundary of the achievable charging power and communication capacity, and discuss the trade-off between power transfer and information transfer. Numerical results show that the charging power of the optimized asymmetric system is much higher than that of the symmetric system in the previous work, and meanwhile, the channel capacity is kept almost unchanged.

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Resonant Beam Communications: Principles and Designs

Cited by 33 publications

References 14 publications

Performance of a High Power and Capacity Mobile SLIPT Scheme

Performance of a High Power and Capacity Mobile SLIPT Scheme

Mobile Optical Communications Using Second Harmonic of Intra-Cavity Laser

Optimization of A Mobile Optical SWIPT System With Asymmetric Spatially Separated Laser Resonator

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