Programmable Integrated Microwave Photonic Filter using a Modulation Transformer and a Double-Injection Ring Resonator

We experimentally demonstrate a new kind of integrated Si
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microwave photonic (MWP) signal processor that combines a programmable modulation transformer (MT) with a versatile double-injection ring resonator (DI-RR). With this circuit we show an array of MWP filtering functions unmatched by traditional MWP circuits.