Scientists from the University of Illinois Urbana-Champaign and the University of Notre Dame have achieved a new world record for GaN quantum-well micro-LED optical switch performance, with a modulation bandwidth of 2.75 GHz and power consumption of just 25 milliwatts. The breakthrough was published in the latest issue of IEEE Electron Device Letters. The 5-micrometer quantum-well micro-LED demonstrates high bandwidth, stable optical power output, and low power consumption, positioning it as a potential low-energy alternative to lasers for short-distance optical interconnects in data center applications.

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