Data transmission using GaAs-based InAs-InGaAs quantum dot LEDs emitting at 1.3 µm wavelength

Vertical emission light-emitting diodes (LEDs), based on long-wavelength, self-assembled InAs-InGaAs quantum dots (QDs) grown on a GaAs substrate, are used to demonstrate up to 1 Gbit/s digital data transmission. The devices are characterised in terms of small-signal modulation, showing bandwidths beyond 1 GHz.