Performance Enhancement of Spectrum Sliced Photonic Microwave Filter Using Parallel Fabry-Pérot Filters With High Profiled Windowing for WDM-ROF Link

In this paper, the performance of spectrum sliced photonic microwave filter for Radio Over Fiber link is characterized. The proposed filter utilizes parallel Fabry-Perot filters for spectrum slicing of a broadband source. The filter performance is characterized by measuring the overall Free Spectral Range, 3db Bandwidth, Quality factor and Main Lobe to Sidelobe Suppression level for different modes of connecting the filter in parallel. Results showing that the highest tunable frequency 18.3 GHz was obtained for incremental differential delay of two filters are 219ps and 164ps. High profiled apodization techniques are employed to improve the performance of the filter.