300-GHz-Band Wireless Communication Using Fermi-Level Managed Barrier Diode Receiver

The first demonstration of a Fermi-level managed barrier (FMB) diode used for a receiver of the wireless communication is presented in the 300-GHz-band. The FMB diode receiver exhibited superior sensitivity over a conventional Schottky-barrier-diode receiver in on-off-keying modulation and direct detection system. Coherent detection scheme with the FMB diode was also demonstrated by applying a local oscillator signal as small as 10 µW to the diode, and an error-free transmission was achieved at data rates up to 12.5 Gbit/s, which is limited by the bandwidth of the transimpedance amplifier integrated with the FMB diode.