Microwave Frequency Identification System using a high-Q Mach-Zehnder interferometer (MZI) coupled micro-ring resonator

We present a microwave frequency identification system utilizes a high Q-factor Mach-Zehnder interferometer (MZI) coupled micro-ring resonator (MZI-coupled MRR), which employs ultra-low-loss waveguides and Euler curve techniques. This system maps frequency information to the time domain, allowing for identification of unknown single and multi-frequency signals. Our system demonstrates a broadband microwave frequency measurement ranging from 0-40 GHz, accompanied by a measurement error of 392.6 MHz, and the ability to capture multiple frequencies simultaneously.