Analysis of the Spike Rate and Spike Correlations in Modulated Semiconductor Lasers With Optical Feedback

Sorrentino, T.; Quintero-Quiroz, C.; Torrent, M. C.; Masoller, Cristina

doi:10.1109/jstqe.2015.2436695

Cited by 11 publications

(8 citation statements)

References 52 publications

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“…The experimental setup is as in [38,39]. A 685 nm semiconductor laser (AlGaInP multi-quantum well Thorlabs HL6750MG), with solitary threshold current I th,sol = 26.62 mA has part of its output intensity fed back to the laser cavity by a mirror.…”

Section: Methodsmentioning

confidence: 99%

“…On the other hand, when the modulation frequency matches the natural frequency of the spikes (without modulation), regular spiking at the frequency of the sinusoidal modulation was reported [36], a phenomenon that was interpreted as due to stochastic resonance [37]. More recently, several of us studied experimentally the entrainment produced by small-amplitude sinusoidal current modulation (the peak-to-peak amplitude was less than 2% of the dc value) [38,39]. We characterized the statistics of the time intervals between consecutive spikes (the inter-spike-intervals, ISIs) and used a symbolic method of time series analysis to detect temporal correlations in the ISI sequence.…”

Section: Introductionmentioning

confidence: 99%

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Experimental study of modulation waveforms for entraining the spikes emitted by a semiconductor laser with optical feedback

Tiana-Alsina¹,

Quintero-Quiroz²,

Panozzo³

et al. 2018

Opt. Express

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The entrainment phenomenon, by which an oscillator adjusts its natural rhythm to an external periodic signal, has been observed in many natural systems. Recently, attention has focused on which are the optimal conditions for achieving entrainment. Here we use a semiconductor laser with optical feedback, operating in the low-frequency fluctuations (LFFs) regime, as a testbed for a controlled entrainment experiment. In the LFF regime the laser intensity displays abrupt spikes, which can be entrained to a weak periodic signal that directly modulates the laser pump current. We compare the performance of three modulation waveforms for producing 1:1 locking (one spike is emitted in each modulation cycle), as well as higher order locking regimes. We characterize the parameter regions where high-quality locking occurs, and those where the laser emits spikes which are not entrained to the external signal. The role of the modulation amplitude and frequency, and the role of the dc value of the laser pump current (that controls the natural spike frequency) in the entrainment quality are discussed.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental study of modulation waveforms for entraining the spikes emitted by a semiconductor laser with optical feedback

Tiana-Alsina¹,

Quintero-Quiroz²,

Panozzo³

et al. 2018

Opt. Express

Self Cite

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“…The output of the drive laser is injected into the other laser, which is called the response laser (LD-2 in Figure 1). pulses of a laser with optical feedback [23]. Moreover, the periodic locking mechanism of the external periodic signal on the output of the optical feedback laser has been studied [24,25].…”

Section: System Architecturementioning

confidence: 99%

“…They also proposed a minimal model to simulate the output of an optical feedback laser [22]. T. Sorrentino et al investigated the pulse rate and pulse correlation of the output pulses of a laser with optical feedback [23]. Moreover, the periodic locking mechanism of the external periodic signal on the output of the optical feedback laser has been studied [24,25].…”

Section: Introductionmentioning

confidence: 99%

Numerical Demonstration of the Transmission of Low Frequency Fluctuation Dynamics Generated by a Semiconductor Laser with Optical Feedback

Dou

Qiu

2022

Photonics

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In this paper, the transmission mechanism of the spike information embedded in the low frequency fluctuation (LFF) dynamic in a cascaded laser system is numerically demonstrated. In the cascaded laser system, the LFF waveform is first generated by a drive laser with optical feedback and is then injected into a response laser. The range of crucial system parameters that can make the response laser generate the LFF dynamic is studied, and the effect of parameter mismatch on the transmission of LFF dynamics is explored through a method of symbolic time-series analysis and the index, such as the spike rate and the cross-correlation coefficient. The results show that the mismatch of the pump current has a more significant influence on the transmission of LFF waveforms than that of the internal physical parameter of the laser, such as the linewidth enhancement factor. Moreover, increasing the injection strength can enhance the robustness of LFF transmission. As spikes of the LFF dynamic generated by lasers with optical feedback is similar to the spike of neurons, the results of this paper can help understanding the information transporting and processing inside the photonic neurons.

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“…Yet, the time interval between these dropouts is not constant. Adding a direct current modulation with a periodic sine forcing makes the spikes appear for a given phase shift of the external frequency modulation corresponding to the entrainment phenomenon [25], [26]. This paper further investigates the nonlinear dynamical features of a mid-infrared QCL operating under optical feedback with continuous-wave operation and, respectively, current modulation.…”

mentioning

confidence: 99%

Investigation of Chaotic and Spiking Dynamics in Mid-Infrared Quantum Cascade Lasers Operating Continuous-Waves and Under Current Modulation

Spitz

Herdt

et al. 2019

IEEE J. Select. Topics Quantum Electron.

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This study investigates chaotic and spiking dynamics of mid-infrared quantum cascade lasers operating under external optical feedback and emitting at 5.5 µm and 9 µm. In order to deepen the understanding, the route to chaos is experimentally studied in the case of continuous-wave and current modulation operation. The non-linear dynamics are analyzed with bifurcation diagrams. While for quasi-continuous wave operation, chaos is found to be more complex, pure continuous wave pumping always leads to the generation of a regular spiking induced lowfrequency fluctuations dynamics. In the latter, results show that by combining external optical feedback with periodic forcing and further induced current modulation allows a better control of the chaotic dropouts. This work provides a novel insight into the development of future secure free-space communications based on quantum cascade lasers or unpredictable optical countermeasure systems operating within the two transparency atmospheric windows hence between 3 µm-5 µm and 8.5 µm-11 µm.

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Analysis of the Spike Rate and Spike Correlations in Modulated Semiconductor Lasers With Optical Feedback

Cited by 11 publications

References 52 publications

Experimental study of modulation waveforms for entraining the spikes emitted by a semiconductor laser with optical feedback

Experimental study of modulation waveforms for entraining the spikes emitted by a semiconductor laser with optical feedback

Numerical Demonstration of the Transmission of Low Frequency Fluctuation Dynamics Generated by a Semiconductor Laser with Optical Feedback

Investigation of Chaotic and Spiking Dynamics in Mid-Infrared Quantum Cascade Lasers Operating Continuous-Waves and Under Current Modulation

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