We demonstrated, for the first time, an integrated microwave photonic (MWP) circuit exhibiting simultaneous tunable notch filtering and linearization, leading to a high performance filter with enhanced linearity and spurious free dynamic range (SFDR). We unlock this unique feature by manipulating the phase and amplitude of multi-order RF modulation sidebands using a versatile MWP spectral shaping circuit. Through a series of experiments, we show a linearized notch filter that exhibits a stopband rejection of 53 dB, more than 32 dB reduction of third-order intermodulation distortion in the passband, and an enhanced SFDR of 119 dB⋅Hz2/3. Our demonstration breaks the conventional and fragmented approach of functionality and linearization in integrated circuit and will potentially stimulate the implementation of integrated MWP system with advanced functionalities and high performance in the future.
|Title of host publication||2021 International Topical Meeting on Microwave Photonics (MWP)|
|Number of pages||4|
|Publication status||Published - 14 Dec 2021|
|Event||2021 International Topical Meeting on Microwave Photonics (MWP) - Pisa, Italy|
Duration: 15 Nov 2021 → 17 Nov 2021
|Conference||2021 International Topical Meeting on Microwave Photonics (MWP)|
|Period||15/11/21 → 17/11/21|