All-optical frequency upconversion method by using a semiconductor optical amplifier Mach-Zehnder interferometer

摘要

affordable broadband wired and wireless integrated networks for the implementation of the research / development and that Radio Over Fiber (RoF) technology the UWB, which is carried off in the very high frequency carrier wave or millimeter-wave low-loss characteristics of the optical fiber through the light-transmitting a radio signal to the base. The technology is based on fiber optic technology and fiber optic wire communication technology, wireless communication technology is the most efficient and cost-effective combined fixed-mobile convergence join actively studied worldwide as a major alternative to building a gill net / Development Benefits ; The RoF system in light-generation of the radio signal is one of the important technologies. Conventional optical modulator utilizing the external light-wireless signal generation method is large, the change of the modulation characteristics of the polarization (polarization) of the optical signal, conversion loss is extremely large, the electrical bandwidth of the frequency bandwidth of the modulator, which may be up-modulating it has the disadvantage of limiting by maven. ; The present invention is a conventional optical-to-optical frequency up-conversion scheme is proposed using a semiconductor Mach-Zehnder interferometer optical amplifier (SOA-MZI) to overcome the shortcomings of the wireless signal generation method. This approach is less change in the characteristics of the polarization modulation of the optical signal, having a conversion gain, the bandwidth is very wide, which may be up-modulating system for the next generation of ultra-wideband wired and wireless integrated light-can be utilized in the generation of a radio signal.