在双带通光电振荡器中发现耗散微波光子孤子分子

IF 5.4 1区 物理与天体物理 Q1 OPTICS APL Photonics Pub Date : 2024-07-23 DOI:10.1063/5.0205357
Huan Tian, Junwen Li, Weiqiang Lyu, Lingjie Zhang, Zhen Zeng, Yaowen Zhang, Zhiyao Zhang, Shangjian Zhang, Heping Li, Yong Liu
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引用次数: 0

摘要

光电振荡器(OEOs)是一种用于产生各种超纯微波信号的高品质因数光电反馈环路,在过去几十年中吸引了广泛的研究。从本质上讲,OEO 也是耗散非线性系统,具有多时间尺度特性和丰富的非线性,这为探索局部耗散孤波提供了可能。在本文中,我们在双带通 OEO 中演示了一种新的时间耗散孤子,即耗散微波光子孤子分子(DMPSM)。数值模拟和实验揭示了DMPSM产生的物理机制,并评估了产生的DMPSM序列的特性。与锁模激光器中的光孤子分子不同,DMPSM的形成是由OEO腔中的多时标耦合、非线性双稳态和时延反馈共同作用的结果,通过改变OEO腔中的多时标变量可以很好地控制DMPSM中孤子的间隔和数量,通过改变初始注入扰动信号的频率可以调整DMPSM的重复频率。同时,生成的DMPSM序列具有高稳定性和出色的相干性,在脉冲雷达探测、密集微波梳生成和神经形态学等方面具有巨大的应用潜力。
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Discovery of dissipative microwave photonic soliton molecules in dual-bandpass optoelectronic oscillator
Optoelectronic oscillators (OEOs), which have attracted extensive studies in the past decades, are high quality-factor optoelectronic feedback loops for generating various ultra-pure microwave signals. In essence, OEOs are also dissipative nonlinear systems with multiple timescale characteristics and abundant nonlinearities, which open the possibilities for exploring localized dissipative solitary waves. In this paper, we demonstrate a new-class temporal dissipative soliton, i.e., dissipative microwave photonic soliton molecule (DMPSM), in a dual-bandpass OEO. Both the numerical simulation and experiment are conducted to reveal the physical mechanism of DMPSM generation and to evaluate the characteristics of the generated DMPSM sequences. Unlike optical soliton molecules in mode-locked lasers, the formation of DMPSMs arises from the combined action of multiple timescale coupling, nonlinear bistability, and time-delayed feedback in the OEO cavity, where the soliton interval and number in a DMPSM can be well-controlled through varying the multiple timescale variables in the OEO cavity, and the repetition frequency of the DMPSMs can be tuned through changing that of the initially injected perturbation signal. Meanwhile, the generated DMPSM sequence performs with high stability and excellent coherence, which shows enormous application potentials in pulse radar detection, dense microwave comb generation, and neuromorphology.
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来源期刊
APL Photonics
APL Photonics Physics and Astronomy-Atomic and Molecular Physics, and Optics
CiteScore
10.30
自引率
3.60%
发文量
107
审稿时长
19 weeks
期刊介绍: APL Photonics is the new dedicated home for open access multidisciplinary research from and for the photonics community. The journal publishes fundamental and applied results that significantly advance the knowledge in photonics across physics, chemistry, biology and materials science.
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