A team at Stanford's School of Engineering has demonstrated an ultrafast nanoscale light-emitting diode (LED) that is orders of magnitude lower in power consumption than today's laser-based systems and is able to transmit data at the very rapid rate of 10 billion bits per second. The new nanoscale device transmits data at ultrafast rates while using thousands of times less energy than current technologies. The nanophotonics device is a major step forward for on-chip data transmission.Nature Communications - Ultrafast direct modulation of a single-mode photonic crystal nanocavity light-emitting diodeCompact, low power onchip photonics is key to developing zettaflop supercomputers.
In tech-speak, the new LED device transmits data, on average, at 0.25 femto-joules per bit of data. By comparison, today's typical "low" power laser device requires about 500 femto-joules to transmit the same bit."Our device is some 2,000 times more energy efficient than best devices in use today," said Vuckovic.
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