基于SBS的通带可变微波光子滤波器  

A Variable Passband Microwave Photonic Filter Based on Stimulated Brillouin Scattering

作　　者：张爱玲[1] 纪颖[1] 陈冰雪[1] 

机构地区：[1]天津理工大学教育部通信器件与技术工程研究中心,天津市薄膜电子与通信器件重点实验室,天津300384

出　　处：《压电与声光》2017年第2期172-175,共4页Piezoelectrics & Acoustooptics

基　　金：新世纪优秀人才基金资助项目(NCET-07-0611);国家自然科学基金应急管理基金资助项目(11444001)

摘　　要：提出并分析了一种大范围可调谐的通带可变微波光子滤波器。它基于受激布里渊散射(SBS)效应并使用2个调制器与1个光纤布喇格光栅生成泵浦信号。通过分别调节这2个调制器的调制频率,可得双通带滤波器和通带间隔可变的四通带滤波器,并实现滤波器中心频率的大范围连续可调谐,而在整个调谐过程中,滤波器的3dB带宽保持不变。仿真分析了不同调制信号对滤波器通带及中心频率的影响,以及滤波器的带宽与泵浦的功率和SBS增益介质长度的关系。A variable microwave photonic filter with wide tuning range is presented and analyzed theoretically.It is based on the stimulated Brillouin scattering（SBS）and uses two modulators to generate pump signal.By adjusting the modulation frequency of the two modulators separately,a four-passband filter with switchable passband interval and dual-passband filter can be realized,and the center frequency of filter can be continuously tuned within a wide tuning range.Meanwhile,the 3dB bandwidth of the filter remains unchanged.The effects of different modulation signals on the passband and the center frequency of the filter are simulated analyzed,as well as the relationship among the bandwidth and the pump power and the length of SBS gain medium.

关 键 词：微波光子滤波器 微波光子学 光信号处理 受激布里渊散射 可变通带 

分 类 号：TN713.5[电子电信—电路与系统]