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Simultaneous Wireless Data and Power Transfer for a 1-Gb/s GaAs VCSEL and Photovoltaic Link

: Fakidis, J.; Helmers, H.; Haas, H.

Fulltext ()

IEEE Photonics Technology Letters 32 (2020), No.19, pp.1277-1280
ISSN: 1041-1135
Journal Article, Electronic Publication
Fraunhofer ISE ()
Photovoltaik; 5G mobile communication; energy harvesting; gallium arsenide; Internet of Things; OFDM; photovoltaic cell; simultaneous lightwave information and power transfer; vertical-cavity surface-emitting lasers; III-V- und Konzentrator-Photovoltaik

We study the trade-off between energy harvesting and data communication for a two-meter wireless gallium-arsenide vertical-cavity surface-emitting laser and photovoltaic link. The use of orthogonal frequency-division multiplexing with adaptive bit and power loading results in a peak data rate of 1041 Mb/s at a bit-error ratio (BER) of 2.2×10−3 under short-circuit conditions. The receiver is shown to provide power harvesting with an efficiency of 41.7% under the irradiance of 0.3 W/cm 2 and simultaneous data communication with a rate of 784 Mb/s at a BER of 2.8×10−3 . The experimental system is envisioned to become a paradigm for next-generation wireless backhaul communications and Internet-of-Things applications.