New multi-channel visible light communication system uses single optical path

https://scienmag.com/new-multi-channel-visible-light-communication-system-uses-single-optical-path/?feed_id=34630&_unique_id=632340e07ff5b

"blue diode functioned as transmitter, light emission increased as injection current increased from 10 mA to 30 mA, converting the energy and information from electrical into optical domain... emission and detection spectrums of blue light chip overlapped by about 37 nm, confirming simultaneous emission and detection... single-optical path full-duplex optical communication... two pairs MQW III-nitride diodes... 100 bits per second... saving of channel space and cost and high integration of communication"