Microwave Pulse Generation Based on Active Mode-Locking Coupled Optoelectronic Oscillator

In this paper, we propose an active mode-locking coupled optoelectronic oscillator (AML-COEO) to generate microwave pulses. Fundamental frequency and harmonic AML-COEOs have been demonstrated by controlling the external low-frequency sinusoidal signal, which replaces the direct-current bias voltage and is directly applied to the bias port of the sharing modulator in the proposed AML-COEO. It is believed that this generation method will enrich the application of the COEO in the pulse Doppler radar.