0.5-Gb/s OFDM-based laser data and power transfer using a GaAs photovoltaic cell

John Fakidis; Stefan Videv; Henning Helmers; Harald Haas

doi:10.1109/LPT.2018.2815273

0.5-Gb/s OFDM-based laser data and power transfer using a GaAs photovoltaic cell

John Fakidis^*, Stefan Videv, Henning Helmers, Harald Haas

^*Corresponding author for this work

Electronic And Electrical Engineering

Research output: Contribution to journal › Article › peer-review

50 Citations (Scopus)

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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.

Original language	English
Pages (from-to)	841-844
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	30
Issue number	9
Early online date	12 Mar 2018
DOIs	https://doi.org/10.1109/LPT.2018.2815273
Publication status	Published - 1 May 2018

Funding

Manuscript received February 20, 2018; accepted March 2, 2018. Date of publication March 12, 2018; date of current version April 16, 2018. The work of H. Haas was supported by the Engineering and Physical Sciences Research Council through the Established Career Fellowship under Grant EP/K008757/1. (Corresponding author: John Fakidis.) J. Fakidis, S. Videv, and H. Haas are with the Li-Fi Research and Development Center, School of Engineering, Institute for Digital Communications, The University of Edinburgh, Edinburgh EH9 3JL, U.K. (e-mail: [email protected]; [email protected]; [email protected]).

Keywords

energy harvesting
gallium arsenide
OFDM
photovoltaic cells
vertical cavity surface emitting lasers

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Cite this

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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.",

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PY - 2018/5/1

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N2 - 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.

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0.5-Gb/s OFDM-based laser data and power transfer using a GaAs photovoltaic cell

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