On the relationship between small and large signal modulation capabilities in highly nonlinear quantum dot lasers

Gready, David; Eisenstein, G.; Gioannini, Mariangela; Montrosset, Ivo; Arsenijević, D.; Schmeckebier, H.; Stubenrauch, M.; Bimberg, D.

doi:10.1063/1.4795130

Cited by 22 publications

(9 citation statements)

References 14 publications

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“…Results of simulations are presented in this section. Value of gain compression factor is chosen around e m ¼ 10 À22 m 3 , which it corresponds to the regular formalism [29,30].…”

Section: Resultsmentioning

confidence: 99%

Impact of gain compression factor on modulation characteristics of InGaAs/GaAs self-assembled quantum dot lasers

et al. 2016

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This paper investigates the influence of gain compression factor on the modulation response of InGaAs/GaAs self-assembled quantum dot laser based on rate equations. For different gain compression factors the output power-current characteristics, light emissions of quantum dot laser have been simulated and effect of gain compression factor changes on quantum dot laser is illustrated. Also, small and large-signal response of quantum dot lasers is studied and the impact of the gain compression factor is presented. It explains that increase of gain compression factor, decreases small-signal modulation characteristics, nevertheless, improves large-signal response of quantum dot lasers. It helps to generate better laser signal quality, higher eye and smaller jitter. The large-signal behavior of a laser diode determines its capability for digital data transfer. The modulation speed of quantum dot lasers is of specific importance if such lasers are considered for optical communication systems.

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“…Results of simulations are presented in this section. Value of gain compression factor is chosen around e m ¼ 10 À22 m 3 , which it corresponds to the regular formalism [29,30].…”

Section: Resultsmentioning

confidence: 99%

Impact of gain compression factor on modulation characteristics of InGaAs/GaAs self-assembled quantum dot lasers

et al. 2016

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“…Theoretical works have demonstrated that the carrier gratings originated by the standing wave pattern cause a saturation of the gain at the lasing mode wavelength and this saturation can be modeled as a gain compression factor parameter (also known as ε parameter) [25], [26] [27]. Several experimental works have also reported measurements or evidences of high ε-parameter as a peculiar characteristic of the QD lasers [28]- [30], [31].…”

Section: Introductionmentioning

confidence: 99%

Time-Domain Traveling-Wave Analysis of the Multimode Dynamics of Quantum Dot Fabry–Perot Lasers

Gioannini

Bardella

Montrosset

2015

IEEE J. Select. Topics Quantum Electron.

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In this paper we investigate with numerical simulations the rich multi-mode dynamics of Quantum Dot Fabry-Perot Lasers. We have used a Time Domain Traveling Wave approach including the electron and hole carrier dynamics in the various Quantum Dot confined states, the inhomogeneous broadening of the complex gain spectrum, the polarization dynamics and the effect of the carrier-photon interaction in the cavity. The role of the various non-linear interaction mechanism on the broadening of optical spectrum of the Quantum Dot laser has been investigated and the main parameters responsible for the phase locking between the longitudinal modes have been identified. We show that in some cases it is possible obtaining pulses after simulating the propagation of the laser output field in a dispersive medium. Many of the obtained simulation results are in good agreement with the experiments reported in the literature.

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“…Measured small signal bandwidths in a similar laser reached 9 GHz and large signal modulation at 22 Gbit/s was demonstrated [3]. The apparent discrepancy between the small and large signal bandwidths has been found to be fundamental for QD lasers as described in [26]. and refractive index dynamics.…”

Section: One To a Few Tens Of Ps: Directly Modulated Lasersmentioning

confidence: 92%

Breakthroughs in Photonics 2014: Time-Scale-Dependent Nonlinear Dynamics in InAs/InP Quantum Dot Gain Media: From High-Speed Modulation to Coherent Light–Matter Interactions

et al. 2015

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The dynamical properties of InP-based quantum dot (QD) gain media are surveyed and analyzed for three time scales ranging from tens of picoseconds to less than 200 fs, where quantum coherent phenomena are observable. Each of these time scales determines the important properties of QD devices, i.e., modulation capabilities, nonlinear gain, and coherent light-matter interactions. Experimental investigations and modeling results are described, highlighting the state of the art in QD devices for the important 1550-nm telecom wavelength range.

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On the relationship between small and large signal modulation capabilities in highly nonlinear quantum dot lasers

Cited by 22 publications

References 14 publications

Impact of gain compression factor on modulation characteristics of InGaAs/GaAs self-assembled quantum dot lasers

Impact of gain compression factor on modulation characteristics of InGaAs/GaAs self-assembled quantum dot lasers

Time-Domain Traveling-Wave Analysis of the Multimode Dynamics of Quantum Dot Fabry–Perot Lasers

Breakthroughs in Photonics 2014: Time-Scale-Dependent Nonlinear Dynamics in InAs/InP Quantum Dot Gain Media: From High-Speed Modulation to Coherent Light–Matter Interactions

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