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

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【作者】 许东； 曹晔； 童峥嵘； 杨菁芃；

【Author】 XU Dong;CAO Ye;TONG Zheng-rong;YANG Jing-peng;Communication Devices and Technology Engineering Research Center,School of Computer and Communication Engineering,Tianjin University of Technology;School of Electronic and Information Engineering,Qingdao University;

【机构】 Communication Devices and Technology Engineering Research Center,School of Computer and Communication Engineering,Tianjin University of Technology； School of Electronic and Information Engineering,Qingdao University；

【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.

【Abstract】 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；
【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)
  • 【文献出处】 Optoelectronics Letters ,光电子快报(英文版) , 编辑部邮箱 ,2017年01期
  • 【分类号】TN713
  • 【被引频次】3
  • 【下载频次】28
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