A continuously tunable microwave photonic notch filter with complex coefficient based on phase modulation  

作　　者：XU Dong 许东;曹晔;童峥嵘;杨菁芃(Communication Devices and Technology Engineering Research Center, School of Computer and Communication Engineering, Tianjin University of Technology, Tianjin 300384, China School of Electronic and Information Engineering, Qingdao University, Qingdao 266071, China)

机构地区：[1]Communication Devices and Technology Engineering Research Center, School of Computer and Communication Engineering, Tianjin University of Technology, Tianjin 300384, China [2]School of Electronic and Information Engineering, Qingdao University, Qingdao 266071, China

出　　处：《Optoelectronics Letters》2017年第1期13-15,共3页光电子快报（英文版）

基　　金：supported by the National High Technology Research and Development Program of China(863 Program)(No.2013AA014200);the National Natural Science Foundation of China(No.11444001);the Municipal Natural Science Foundation of Tianjin in China(No.14JCYBJC16500)

摘　　要：A continuously tunable microwave photonic notch filter with complex coefficient based on phase modulation is proposed and demonstrated. The complex coefficient is generated using a Fourier-domain optical processor(FD-OP) to control the amplitude and phase of the optical carrier and radio-frequency(RF) phase modulation sidebands. By controlling the FD-OP,the frequency response of the filter can be tuned in the full free spectral range(FSR) without changing the shape and the FSR of the frequency response. The results show that the center frequency of the notch filter can be continuously tuned from 17.582 GHz to 29.311 GHz with FSR of 11.729 GHz. The shape of the frequency response keeps unchanged when the phase is tuned.

关 键 词：notch photonic tunable continuously microwave tuned unchanged processor modulator coupler 

分 类 号：TN713[电子电信—电路与系统]