Reconfigurable Microwave Photonic Filter with Linear Amplitude Response Based on Quantum Dash Mode-Locked Laser for Instantaneous Frequency Measurement

We demonstrate an instantaneous frequency measurement system based on a microwave photonic filter with linear amplitude responses for linear and dB units. The overall RMS errors are ~ 46.3 MHz and 55.6 MHz for linear and dB units, respectively, in the range of 1-12.5 GHz.