Abstract
A new microwave photonic notch filter structure that realises coherence-free, narrow notch width, and wide passband operation, is presented. It is based on a WDM technique with a double-pass modulation approach incorporating sequentially spaced reflectors that provide the appropriate time delays for the remodulations. Experimental results are presented which demonstrate a coherence-free microwave photonic filter that exhibits a narrow-notch, a wide passband, and no phase noise limitations, simultaneously.
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