Phase Conjugate Feedback Effects in Nano-Lasers

Sattar, Zubaida Abdul; Shore, K.A.

doi:10.1109/jqe.2016.2535339

Cited by 13 publications

(8 citation statements)

References 46 publications

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“…In 2012, Ding and Ning explored the effects of F and β on the performance of electronically pumped NLs [40]. Sattar et al studied the nonlinear dynamical behavior of NLs under external optical feedback, phase-conjugate feedback, and optical injection [41][42][43][44]. In 2017, Han et al analyzed the dynamic characteristics of mutually coupled NLs and investigated the influence of F and β on them [45,46].…”

Section: Introductionmentioning

confidence: 99%

Random Numbers Generated Based on Dual-Channel Chaotic Light

Liu,

Mu,

Wang

et al. 2024

Electronics

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This paper presents a chaotic system based on novel semiconductor nanolasers (NLs), systematically analyzing its chaotic region and investigating the influence of key parameters on the unpredictability of chaotic output. This study found that under optical feedback conditions, NLs generate chaos across a wide range of feedback parameters, with the highly unpredictable region completely overlapping with the chaotic region. Further injection into the slave lasers enhances the chaotic output, expanding the range of unpredictability. Additionally, we analyzed the impact of internal parameter mismatch on the complexity of chaotic signals and found it to be similar to the scenario when parameters are matched. Using this chaotic system as an entropy source, we constructed a random number generator (RNG) and investigated the effects of internal parameters mismatch and differences in the injection parameters on the generator’s performance. The simulation results show that the RNG performs well under different parameter settings, and the generated random sequences pass all random number tests successfully. Therefore, this chaotic system can yield a high-complexity chaotic light source with appropriate parameter selection, and when combined with effective post-processing, it can generate high-quality random numbers. This is crucial for advancing the realization of small-sized, high-randomness RNGs.

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Section: Introductionmentioning

confidence: 99%

Random Numbers Generated Based on Dual-Channel Chaotic Light

Liu,

Mu,

Wang

et al. 2024

Electronics

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“…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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“…Significant theoretical work has been undertaken exploring the dynamical behaviour of electrically pumped nano-lasers [17][18][19]. Particular effort has been expended in assessing the impact on the dynamics of semiconductor nanolasers of external perturbations such as: their direct current modulation response [20]; their response to optical injection [21]; and when subject to both regular [22] and phase conjugate [23] optical feedback. Such investigations have been largely confined to the behaviour of stand-alone semiconductor nano-lasers.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of Electrically Pumped Semiconductor Nano-Laser Arrays

Fan,

Shore,

Shao

2023

Photonics

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Semiconductor nano-lasers have been actively investigated both theoretically and experimentally with to the aim of providing a highly compact laser amenable to photonic integration. Such devices are naturally suited for assembly in close-packed one- and two-dimensional arrays. In such arrangements, optical coupling between elements of the array opens opportunities to generate a range of dynamical behaviours. In this paper, we present the first theoretical treatment of the dynamics of electrically pumped nano-laser arrays. Two specific forms of such arrays are analysed in detail: a three-element linear array, and triangular arrays. The former is the basis for extensive one-dimensional arrays, whilst the latter is a building block of many possible geometric configurations of two-dimensional nanolaser arrays. Using these prototypical configurations enables the identification of novel dynamical behaviours, which may be accessed using nano-laser arrays. A distinguishing physical feature of nano-lasers is the enhancement of the spontaneous emission rate via the so-called Purcell effect. Allowing for a range of Purcell enhancement factors, the analysis focusses on the effects of experimentally controllable parameters such as the laser drive current. It is shown that the Purcell enhancement factor is critical to the availability of a range of dynamical behaviours which arise simply due to inter-element optical coupling. Two-dimensional portraits of the regimes of differing dynamics offer a convenient means for determining the dynamics which may be accessed by varying the laser drive current.

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Phase Conjugate Feedback Effects in Nano-Lasers

Cited by 13 publications

References 46 publications

Random Numbers Generated Based on Dual-Channel Chaotic Light

Random Numbers Generated Based on Dual-Channel Chaotic Light

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

Dynamics of Electrically Pumped Semiconductor Nano-Laser Arrays

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