Bi-directional Visible Light Communication Using a Single 682nm Visible Vertical-Cavity Surface-Emitting Laser (VCSEL) and Signal Remodulation

We demonstrate a bi-directional signal-remodulated visible light communication (VLC), using 8.148-Gbit/s orthogonal-frequency-division-multiplexed (OFDM) downstream and signal remodulated 2-Mbit/s on-off-keying (OOK) upstream, with 3-m free-space transmission distance.