Observation of regular pulse train in a narrow-band optoelectronic oscillator

作     者：ZHAO Chunbo TUO Zhuoyue YAO Jiali HE Yuling ZHAI Shenghua MENG Yansong 

作者机构：China Academy of Space Technology(Xi’an)Xi’an 710000China National Key Laboratory of Science and Technology on Space MicrowaveXi’an 710000China1 

出 版 物：《Optoelectronics Letters》 (光电子快报（英文版）)

年 卷 期：2024年第20卷第2期

页      面：94-99页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 080902[工学-电路与系统] 08[工学] 0702[理学-物理学] 

基　　金：supported by the National Key Laboratory Foundation of China (No.6142411186408)。 

主　　题：optoelectronic pulse modulator 

摘      要：We have experimentally observed a new operating state of a regular pulse train in a narrow-band optoelectronic oscillator(OEO) system, where the direct-current(DC) bias of the Mach-Zehnder modulator is set at the maximum value of the transmission transfer function instead of the usual quadrature point. The observed quasi-steady-state pulse train is distinctly periodic, with a period of 10.5 μs and a center frequency of 10 GHz, and resembles a mode-locked OEO in its waveform. The formation of regular pulses here may arise from the dynamic balance of nonlinearity and narrow-band filter effects, with the transient characteristics of the pulses arising mainly from instabilities between the gain and cavity loss. Our results are of great importance for deepening the understanding of the nonlinear dynamical processes in OEO systems.