20 meter underwater wireless optical communication link with 1.5 Gbps data rate.
The video streaming, data transmission, and remote control in underwater call for high speed (Gbps) communication link with a long channel length ~10 meters) We present a compact and low power consumption underwater wireless optical communication (UWOC) system utilizing a 450 nm laser diode (LD) and a Si avalanche photodetector. With the LD operating at a driving current of 80 mA with an optical power of 51.3 mW, we demonstrated a high speed UWOC link offering a data rate up to 2 Gbps over a 12 meter long, and 1.5 Gbps over a record 20 meter long underwater channel. The measured bit error rate (BER) are 2.8 x 10 5, and 3.0 x 10 3, respectively, which pass well the forward error correction (FEC) criterion.
Optics express