Microwave photonic filter with negative coefficients based on counter-phase modulation using a single electro-optic phase modulator |
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| Authors: | Jianqiang Li Kun Xu Jian Wu Jintong Lin |
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| Institution: | Key Laboratory of Optical Communication & Lightwave Technologies, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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| Abstract: | A simple photonic approach is proposed for the implementation of a reconfigurable multi-tap microwave filter with negative coefficients. In this scheme, a dual-optical-input intensity modulation module which can perform counter-phase modulation is constructed using a single electro-optic phase modulator. Two inter-complementary microwave signals are experimentally obtained for verification of the function of counter-phase modulation. A reconfigurable four-tap microwave filter with two negative coefficients is implemented by experiment. |
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| Keywords: | Microwave photonic filter Negative coefficient Electro-optic phase modulator |
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