中文摘要：

提出一种新颖的基于双波长布里渊光纤激光器产生微波信号源的结构,通过调节偏振控制器（PC）产生稳定输出的双波长光信号,利用输出的双波长产生10.75GHz的微波信号。一段10km长的普通单模光纤（SMF）作为布里渊增益介质,一段4m长未抽运的保偏掺铒光纤（PM-EDF）和一个由2×2的3dB耦合器组成的微环结构用来抑制边模,一个超窄线宽的分布反馈（DFB）激光器作为布里渊抽运（BP）源。产生的10.75GHz的微波信号通过50GHz带宽的光电探测器（PD）拍频并通过电频谱分析仪（ESA）观测,产生的微波信号线宽约为600kHz。

英文摘要：

A simple approach to generate stable microwave signals by heterodyning pump light and Stokes lasing light from a dual-wavelength Brillouin fiber laser（BFL）is proposed and demonstrated.Stable dual-wavelength output is obtained by adjusting two polarization controllers.A microwave signal is observed and the central frequency of the microwave signal is around 10.75 GHz.A segment of 10 km-long single-mode fiber（SMF）is used as Brillouin gain,and a 4 m long unpumped polarization maintaining erbium-doped fiber（PM-EDF）and micro-ring cavity,which is composed of 2×2 3 dB coupler,suppress unwanted side-modes.A distributed feedback（DFB）semiconductor laser is used as the Brillouin pump（BP）.The output of dual-wavelength fiber laser is injected into a optoelectric detecter（PD）with a bandwidth of 50 GHz.An electrial spectrum analyzer（ESA）is used to measure the microwave signal around 10.75 GHz.Linewidth of the microwave signal is around 600 kHz.