基于八倍频技术的0.1THz光载太赫兹通信系统研究

We have proposed wavelength reuse scheme for a full-duplex 0.1THz ROF system. In the central station, two cascaded Mach-Zehnder modulators have been used to produce fourth-order sidebands, the downlink data is modulated on upper sideband and coupled with original optical carrier and lower sideband. At base station, a interleaver is employed to separete the optical mm-wave and original optical carrier. The pure optical carrier is modulated uplink data and transimit back to center station(CS). The simulation results show that 0.1 THz wave was generated by employing 12.5 GHz RF clock source, both uplink and downlink are modulated with 5 Gb/s baseband data, after transimitted 100 km SMF, eye pattern opened clearly. This scheme can resist chromatic dispersion effectively and suitable for long distance transimission.