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 | |
Publication status | Published - 1 May 2018 |
Keywords
- energy harvesting
- gallium arsenide
- OFDM
- photovoltaic cells
- vertical cavity surface emitting lasers