Characterizing the chaotic dynamics of a semiconductor nanolaser subjected to FBG feedback

Jiang, Pei; Zhou, Pei; Li, Nianqiang; Mu, Penghua; Li, Xiaofeng

doi:10.1364/oe.427541

Cited by 6 publications

(3 citation statements)

References 56 publications

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“…This investigation involved the modification of rate equations, incorporating variables such as F and β. Our findings revealed that employing FBG feedback surpasses mirror feedback in its ability to conceal TDSs and expand effective bandwidth, especially when selecting intermediate feedback strength and frequency detuning, as described in reference [55]. Therefore, these studies have provided evidence that NLs, similar to traditional SLs, exhibit an extensive array of dynamic characteristics.…”

Section: Introductionsupporting

confidence: 52%

“…Hence, in recent years, the application of this type of laser in chaotic systems has been extensively investigated by a multitude of researchers. They have proposed several theoretical models of innovative semiconductor NLs to explore nonlinear dynamics [38][39][40][41][42][43][44][45][46][47][48][49][50][51][52] and TDS concealment [53][54][55]. In these systems, the dynamic properties of NLs are significantly influenced by two crucial parameters: the Purcell factor F and the spontaneous emission coupling factor β [53].…”

Section: Introductionmentioning

confidence: 99%

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Dynamics and Concealment of Time-Delay Signature in Mutually Coupled Nano-Laser Chaotic Systems

Zhang,

Guo,

Liu

et al. 2023

Photonics

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It is well known that nano-lasers (NLs), as important optical components, have attracted widespread attention for their output characteristics. In this paper, the dynamic behavior and time-delay concealment properties of NLs mutually coupled in open-loop, semi-open-loop, and closed-loop structures have been numerically investigated. We employ bifurcation diagrams and 0–1 chaos tests in our simulations to quantitatively analyze the dynamic properties of the system and introduce the autocorrelation function to evaluate the ability of the system to conceal the time-delay signature (TDS). In the meantime, the effects of the NL parameters and the controllable variables of the system on the TDS are studied. The results indicate that, compared with an open-loop structure without feedback, the mutual coupling scheme with added feedback is beneficial for the system to output high-quality chaotic signals. Furthermore, selecting a moderate Purcell factor F and a smaller spontaneous emission coupling factor β can achieve TDS concealment over a wider parameter range of injection intensity and frequency detuning.

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Section: Introductionsupporting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Dynamics and Concealment of Time-Delay Signature in Mutually Coupled Nano-Laser Chaotic Systems

Zhang,

Guo,

Liu

et al. 2023

Photonics

Self Cite

View full text Add to dashboard Cite

show abstract

“…Therefore, they have attracted significant attention in recent years. Scholars have proposed various theoretical models of semiconductor NLs to study their dynamic characteristics [30][31][32][33][34][35][36][37][38][39] and TDS concealment [40][41][42]. Among them, the TDS concealment mechanism in ring networks based on NLs has not been explored.…”

Section: Introductionmentioning

confidence: 99%

Concealment of Chaos Time Delay Signature in a Ring Network With Heterogeneous Delays Based on Nano-Lasers

Zhang,

Mu,

Wang

et al. 2024

IEEE Access

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In this paper, we numerically investigate the concealing properties of time delay signature (TDS) in the chaotic output of a ring network composed of three mutually coupled semiconductor nano-lasers, comparing the TDS evolution between a ring network with identical coupling delays and a ring network with heterogeneous coupling delays. In simulations, an autocorrelation function is introduced to assess the system's capability in concealing the TDS. By examining the impacts of system parameters such as coupling strength, frequency detuning, Purcell factor F, spontaneous radiation coupling factor β, and bias current I on the concealment of TDS, we identify the parameter ranges that successfully conceal TDS. The findings indicate that, compared to ring networks featuring identical coupling delays, those with heterogeneous delays can conceal TDS over a broader parameter range. Additionally, F moderately and β relatively small can expand the region of TDS concealment, while the influence of I on TDS is relatively negligible in the ring network with heterogeneous delays.INDEX TERMS nano-lasers, time delay signature, heterogeneous delays

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Chaotic characteristics enhancement by introducing optical feedback into a sole intensity modulation optical injection system

Zeng¹,

Wang²,

Gu³

et al. 2023

J. Opt. Soc. Am. B

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Wideband chaotic signals generated in an intensity modulation (IM) optical injection system were successfully implemented and provided new insight into overcoming the implementation bottleneck that semiconductor lasers under continuous-wave (CW) optical injection can generate chaos only in very narrow regions above the Hopf bifurcation. Despite its success, the dimensionality of chaos is relatively low due to the absence of delay loops in an optical injection system, which may only support low-dimensional optical chaos-based applications. Therefore, we introduce optical feedback into the sole IM optical injection system to enhance the chaotic dimension and demonstrate chaotic characteristics enhancement both experimentally and numerically. In detail, the influences of some key parameters, such as injection parameters, modulation parameters, and the feedback parameter, on the chaotic performance are systematically researched. The results show that the chaotic regions, bandwidth, and correlation dimension (CD) can be augmented through introducing optical feedback. Additionally, when the weak optical feedback is introduced, better chaotic quality with the time delay signature (TDS) value at a low level can be expected in an extensive range of the injection ratio and modulation depth.

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Characterizing the chaotic dynamics of a semiconductor nanolaser subjected to FBG feedback

Cited by 6 publications

References 56 publications

Dynamics and Concealment of Time-Delay Signature in Mutually Coupled Nano-Laser Chaotic Systems

Dynamics and Concealment of Time-Delay Signature in Mutually Coupled Nano-Laser Chaotic Systems

Concealment of Chaos Time Delay Signature in a Ring Network With Heterogeneous Delays Based on Nano-Lasers

Chaotic characteristics enhancement by introducing optical feedback into a sole intensity modulation optical injection system

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