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  4. 0.5-Gb/s OFDM-Based Laser Data and Power Transfer Using a GaAs Photovoltaic Cell
 
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2018
Journal Article
Titel

0.5-Gb/s OFDM-Based Laser Data and Power Transfer Using a GaAs Photovoltaic Cell

Abstract
In this letter, we demonstrate for the first time the additional capability of high-speed data communication for single-junction photovoltaic (PV) cells. A record 3-dB bandwidth of 24.5 MHz is reported for a gallium arsenide (GaAs) PV cell. The PV cell is shown to achieve a power efficiency of at least 42% when irradiance of 0.46 W/cm2 is received from 847-nm vertical-cavity surface-emitted laser. Optimized bit-and-power-loaded optical orthogonal frequency-division multiplexing (OFDM) is applied to use the communication bandwidth most efficiently. With this, a data rate of 0.5 Gb/s is achieved for a 2-m OFDM-based laser link. To the best of our knowledge, the reported data rates achieved with a GaAs PV cell as the detector are the highest for simultaneous optical wireless information and power transfer.
Author(s)
Fakidis, J.
Videv, S.
Helmers, H.
Haas, H.
Zeitschrift
IEEE Photonics Technology Letters
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DOI
10.1109/LPT.2018.2815273
Language
English
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Fraunhofer-Institut für Solare Energiesysteme ISE
Tags
  • Materialien - Solarze...

  • Photovoltaik

  • III-V und Konzentrato...

  • III-V Epitaxie und So...

  • Power-by-Light

  • harvesting

  • arsenide

  • OFDM

  • cavity surface emitti...

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