Before revision: In January 2010 a team of researchers from Siemens and Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute in Berlin demonstrated transmission at 500 Mbit/s with a white LED over a distance of , and 100 Mbit/s over longer distance using five LEDs.
After revision: In January 2010 a team of researchers from Siemens and Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute , in Berlin, demonstrated transmission at 500 Mbit/s with a white LED over a distance of , and 100 Mbit/s over longer distance using five LEDs.