Compact 2.4 GHz Microwave Generation System Based on an Ultralow Noise Femtosecond Laser

SummaryCommunication systems with high timing precision require microwave signals with ultra-low phase noise. In this work, we establish a compact and convenient 2.4 GHz microwave generation system based on the transfer oscillator technique for optical frequency division via a low-SWaP 1-GHz solid-state fiber laser and a 657 nm narrow linewidth laser. High SNR (> 30 dB) of carrier envelop offset frequency and beat note between two lasers are obtained via the octave spectrum without amplification.