The University of Illinois at Urbana-Champaign in the United States collaborated with scientists from the University of Notre Dame to set a new world record for quantum well light-emitting diode optical switching performance. They developed a gallium nitride quantum trap miniature LED with a light modulation bandwidth of 2.75 GHz and a power consumption of only 25 milliwatts. It is expected to be a low-power alternative to lasers in short-range optical interconnects in data centers. The relevant paper was published in the new issue of “IEEE Electronic Devices Express”. About 90% of data center communication is short-range communication within 10 meters. Currently, lasers are mostly used for this type of high-frequency communication, but lasers consume a lot of power and generate a lot of heat. In contrast, LEDs have the advantage of low power consumption and are more suitable as low energy light sources for short-range optical interconnections. The newly developed 5-micron quantum trap miniature LED not only has high bandwidth and stable optical power, but also has low energy consumption and expandable material platforms, which are expected to improve the speed and efficiency of data center communication links.

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