Engineers develop enhanced GaN-based LED array visible light communication system

https://techxplore.com/news/2023-08-gan-based-array-visible-communication.html

"screen dislocations caused by lattice mismatches in GaN-based LEDs improve quantum well quality and optical efficiency... contains 8 different LED/ WDM units used simultaneously. Except 660nm and 620nm red LED units, other 6 in 570nm–450nm wavelength band use Si substrate GaN-based LEDs... bit-power loading DMT modulation/demodulation program, DZN digital pre-equalizer, and software post-equalizer... 31.38Gb/s transmission rate... higher electro-optic conversion efficiency and larger device bandwidth"

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