Terahertz wireless communication link at 300 GHz

Abstract

We present a terahertz wave wireless link operating at 300 GHz which has a potential for use in ultra fast future wireless services in short range. Terahertz wave was generated and modulated with photonic technologies in the transmitter, allowing us to use radio on fiber system concept as well. For the receiver, we used a Schottky barrier diode detector integrated with a planar antenna. With the link, error free data transmission at 12.5 Gbps was experimentally demonstrated. Taking the performance margin of the transmitter and receiver into consideration, we believe that even up to 20-Gbps data can be transmitted.

High-Speed Coherent Transmission Using Advanced Photonics in Terahertz Bands

“…Optical-to-electrical (O/E) and electricalto-optical (E/O) conversion technologies provide direct conversion between the optical and terahertz radio signals without any processing latency, and its signal speed is much faster than 10 Gb/s [22]- [25]. IIn addition, advanced optical digital coherent detection can compensate for transmission impairments of the signal in the optical domain, even in the terahertz domain; a waveform of the signal is transported over the fiber and the air between a transmitter (Tx) and a receiver (Rx) [26].…”

10-Gbit/s Wireless Communication System at 300 GHz

“…The authors of [1] and [2] adopted a coherent architecture in the RF frontend based on all active monolithic microwave integrated circuits and demonstrated data transmissions of up to 25 Gbit/s. On the other hand, the 10-Gbit/s Wireless Communication System at 300 GHz Tae Jin Chung and Won-Hui Lee authors of [4] and [5] used photonic technologies in the transmitter and a Schottky barrier diode (SBD) detector in the receiver, which is a typical incoherent approach, and demonstrated data transmissions of up to 12.5 Gbit/s and possibly even 20 Gbit/s. This paper focuses on the practical implementation of a THz communication system with an incoherent approach and a high IF including the BB and IF band electronics and the RF frontends.…”

Phase noise analysis of an optical frequency comb using single side-band suppressed carrier modulation in an amplified optical fiber loop

“…High-speed electronics for baseband modulation and a direct photonic up-conversion technique can provide high-speed radio transmission at the a frequency of 100 GHz and at frequencies greater than 300 GHz [4,5]. In this case, the quality of the RoF signals, particularly the stabilization of the center frequency of the radio, plays an important role in coherent detection, because the carrier frequency fluctuation degrades the signal quality and increases the load on digital signal processing (DSP) to compensate for impairments in transmission; additionally, the total energy consumption will increase [6,7].…”