Waveguide filter-based on-chip differentiator for microwave photonic signal processing

We propose and demonstrate a waveguide filter-based on-chip differentiator for microwave photonic signal processing. The system principle allows the operation of arbitrary-order differentiation. The realized device is constructed using the basic building blocks of photonic integrated circuits, and features scalability and full reconfigurability. The waveguide architecture allows this functionality to be incorporated in more complex on-chip signal processing systems, which manifests the potentials of a fully integrated microwave photonic signal transmitter.