Applications Of Stimulated Brillouin Scattering In Microwave Photonics

The rapid development of optical communication and wireless communication has led to the new research area of microwave photonics. In microwave photonics systems, radio over fiber (RoF) technique is a new enabling technology that comes from the requirements of higher speed and huge bandwidth in wireless communications. RoF is a radio interface technology which combines optical networks and wireless communications, in which microwave signals are modulated onto the optical carrier and transmitted on the fiber between the transmission link between base station (BS) and central station (CS). Due to its low cost, high bandwidth and anti-interference, RoF technique is very useful in the wireless bandwidth communications, satellite communications and intelligent traffic system, and so on, in the near future. In this thesis, the stimulated Brillouin scattering (SBS) in fiber is studied, and is introduced to the RoF system for the microwave/millimeter-wave all-optical generation and multiwavelength laser.The stimulated Brillouin scattering in photonic crystal fiber is investigated. A multi-wavelength photonic crystal fiber Brillouin Laser based on Fabry-Perot Cavity is presented. Based on the PCF Brillouin laser, all-optical microwave generation is achieved. In the experiment, two microwave signal about 9.788GHz and 19.578GHz are attained.A ring cavity multiwavelength Brillouin laser is formed, in which the number of wavelengths can be controlled by the variable optical attenuator. The effect of the polarization is also studied.