Performance Enhancement of Spectrum Sliced Photonic Microwave Filter Using Parallel Fabry- Pérot Filters With High Profiled Windowing for WDM-ROF Link
نویسندگان
چکیده
Abstract—In this paper, the performance of spectrum sliced photonic microwave filter for Radio Over Fiber link is characterized. The proposed filter utilizes parallel Fabry-Pérot 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. Frequency responses of the filter with and without windowing were analyzed. Results are tabulated and compared for different modes of connecting the filter in parallel configuration. The estimated performances show that the proposed configuration can be tuned over the frequency range from 4.6 GHz to 18 GHz with very good sidelobe suppression level. The results are showing that this configuration is suitable for microwave/ millimeterwave Radio Over Fiber applications.
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