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In this article, we propose and experimentally demonstrate a novel microwave photonics filter (MPF) with two independently tunable passbands. The MPF is based on a sliced broadband optical source and a dispersive medium, and two paralleled fiber Mach-Zehnder interferometers (FMZIs) have been employed as the optical spectrum slicer. A coil of single-mode fiber has been used as a dispersion medium, which introduces time delay for each tap. A stable dual-passband MPF has been obtained, and the experimental results show that each passband of the MPF can be tuned freewill by adjusting the variable optical delay line (VODL) in each of the FMZIs. [ABSTRACT FROM AUTHOR]

We propose and experimentally demonstrate a 16-channel flexible optical passband filter array for colorless, directionless, contentionless, flexible reconfigurable optical add/drop multiplexer. Utilizing high-resolution diffraction grating for wavelength dispersion and liquid crystal on silicon for wavelength modulation, the filter array can realize adding/dropping 16 independent optical channels with tunable bandwidth and center wavelength. Furthermore, each channel is capable of tuning multiple wavelengths with different bandwidths. The proposed filter array realized remarkable performance, such as less than 6dB insertion loss, 50GHz to 5000GHz bandwidth tuning range, transmission bandwidth covering the full C band, and greater than 30dB optical isolation among the channels. [ABSTRACT FROM AUTHOR]