Semiconductor Today features "III-nitride microphotodetector for visible light communication"

"Researchers used semi-polar InGaN quantum wells to create a laser diode integrated with a semiconductor optical amplifier (SOA) for visible light communication (VLC), smart lighting, and underwater wireless optical communications (UWOC)."

"KAUST in Saudi Arabia claims a record 3.2 gigabit per second (Gbps) data-rate performance for visible light communications (VLC) at 405nm wavelength. The orthogonal-frequency division multiplex (OFDM) system used an indium gallium nitride multiple quantum well microphotodetector (μPD) receiver and laser diode source with quadrature amplitude modulation (QAM) coding."

"The researchers want to address the bandwidth and data security challenges for future high-speed mobile Internet, smart traffic, and Internet of Things (IoT). Bandgap limitations make the receiver portion of VLC systems particularly challenging."