Self-Excited Microwave Pulse Generation Based on Self-Mode-Locking Optoelectronic Oscillator

• DOI: 10.1109/jlt.2025.3527702
• Publication Date: 2025-01-08T20:17:05Z
• Authors: Hao Chen; Qiuyi Shen; Tongtong Xie; Jiahui Lin; Yu Wang; Hongyan Fu; Daru Chen
• Keywords: Duty cycle

In this paper, a self-mode-locking optoelectronic oscillator (SML-OEO) is proposed and experimentally analyzed for self-excited microwave pulse generation. The SML-OEO shows the ability to realize phase coherence of oscillating modes in OEO cavity, thus generating frequency comb (MFC) with characteristics periodic rectangular waveform temporal domain. On basis, introducing broadband electric bandpass filters (EBFs) different bandwidths loop provides flexibility choosing band resulting MFCs, pulses tunable duty cycles can be realized by tuning parameters SML-OEO. addition, adjusting gain unevenness EBF also utilized hopping output two mutually coupled MFCs. proof-of-principle experiment, 3-5 GHz 5-9 are realized, where waveforms period tens ns cycle. And it realizes mutual coupling MFCs same FSR bandwidth, whose temporal-domain signal frequency-hopping outputs pulses.