Wireless data transmission of 30 Gbps at a 500-GHz range using resonant-tunneling-diode terahertz oscillator

A resonant-tunneling-diode (RTD) terahertz oscillator with a large modulation bandwidth was fabricated, and wireless communication using 500 GHz range was demonstrated. The RTD oscillator was directly modulated using a pulse pattern generator. Although the bit error rate (BER) degraded with the bit rate owing to the increase in losses of the cable and bias tee with frequency, a very high bit rate of 30 Gbps with a correctable BER of 1.3 × 10-3 was achieved.