Photonic Integrated Device for Chaos Applications in Communications

Argyris, Apostolos; Hamacher, Michael; Chlouverakis, K.E.; Bogris, Adonis; Syvridis, Dimitris

doi:10.1103/physrevlett.100.194101

Cited by 184 publications

(82 citation statements)

References 26 publications

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“…Both a quasiperiodic route to chaos 57 and a period doubling route to chaos 58 have been reported. Adding a fourth-contact section for separated phase control in a longer (1 cm) passive waveguide has enabled achievement of a period doubling route to chaos of much higher dimension 59 . In a recent proposal, the linear waveguide is replaced by an architecture based on a ring passive waveguide of about 1cm length that integrates a DFB section, two SOA sections and a photodiode [ Fig.…”

Section: Integrated On-chip Chaotic Laser Diodementioning

confidence: 99%

Physics and applications of laser diode chaos

Sciamanna¹,

Shore²

2015

Nature Photon

600

327

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-An overview of chaos in laser diodes is provided which surveys experimental achievements in the area and explains the theory behind the phenomenon. The fundamental physics underpinning this behaviour and also the opportunities for harnessing laser diode chaos for potential applications are discussed. The availability and ease of operation of laser diodes, in a wide range of configurations, make them a convenient test-bed for exploring basic aspects of nonlinear and chaotic dynamics. It also makes them attractive for practical tasks, such as chaos-based secure communications and random number generation. Avenues for future research and development of chaotic laser diodes are also identified.The emergence of irregular pulsations and dynamical instabilities from a laser were first noted in the very early stages of the laser development. Pulses whose amplitude "vary in an erratic manner" were reported in the output of the ruby solid-state laser 1 [ Fig. 1 a] and then found in numerical simulations 2 . However the lack of knowledge of what would later be termed "chaos" resulted in these initial observations being either left unexplained or wrongly attributed to noise.The situation changed in the late 1960s with the discovery of sensitivity to initial conditions by Lorenz 3 , later popularized as the "butterfly effect". As illustrated in Fig. 1 (b), numerical simulations of a deterministic model of only three nonlinear equations showed an irregular pulsing with a remarkable feature: the state variables evolve along very different trajectories despite starting from approximately the same initial values [ Fig. 1 b]. The distance δ(t) between nearby trajectories diverges exponentially : δ(t) = δ(0) exp(λt) provided that λ, the effective Lyapunov exponent of the dynamical system, is positive. Consequently such systems are unpredictable in the long term. Plotted in the x-y-z phase space of the state variables, the trajectories converge to an "attractor" which has the geometric property of being bounded in space despite the exponential divergence of nearby trajectories [ Fig. 1 c]. Such attractors are found to have a fractional dimension 4 and are thus termed strange. Aperiodicity, sensitive dependency to initial conditions and strangeness are commonly considered as the main properties for "chaos" The fields of laser physics and chaos theory developed independently until 1975 8 when Haken discovered a striking analogy between the Lorenz equations that model fluid convection and the MaxwellBloch equations modelling light-matter interaction in single-mode lasers. The nonlinear interaction between the wave propagation in the laser cavity (represented by the electric field E) and radiative recombination producing macroscopic polarization (encapsulated in the polarization P and carrier inversion N) yield similar dynamical instabilities to those found in the Lorenz equations. More specifically, in addition to the conventional laser threshold, Haken suggested a second threshold would exist above which "spiking occurs ...

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Section: Integrated On-chip Chaotic Laser Diodementioning

confidence: 99%

Physics and applications of laser diode chaos

Sciamanna¹,

Shore²

2015

Nature Photon

600

327

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“…Subsequently, monolithic integrated laser structures based on delayed feedback were designed to exhibit chaotic emission. Such lasers were realized and characterized by Argyris et al (2008). They consisted of a distributed feedback laser, a passive resonator, and active elements that control the optical feedback properties.…”

Section: Short Delay Regimementioning

confidence: 99%

Complex photonics: Dynamics and applications of delay-coupled semiconductors lasers

et al. 2013

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Complex phenomena in photonics, in particular, dynamical properties of semiconductor lasers due to delayed coupling, are reviewed. Although considered a nuisance for a long time, these phenomena now open interesting perspectives. Semiconductor laser systems represent excellent test beds for the study of nonlinear delay-coupled systems, which are of fundamental relevance in various areas. At the same time delay-coupled lasers provide opportunities for photonic applications. In this review an introduction into the properties of single and two delay-coupled lasers is followed by an extension to network motifs and small networks. A particular emphasis is put on emerging complex behavior, deterministic chaos, synchronization phenomena, and application of these properties that range from encrypted communication and fast random bit sequence generators to bioinspired information processing.

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“…One contribution of 13 to a Theme Issue 'Delayed complex systems '. This journal is © 2010 The Royal Society mechanical scenarios on nano-to macroscopic spatial scales (Argyris et al 2005(Argyris et al , 2008Kouomou et al 2005;Uchida et al 2005Uchida et al , 2008Illing et al 2007;Yousefi et al 2007;Cohen et al 2008;Sorrentino & Ott 2008, 2009aReidler et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Complex dynamics and synchronization of delayed-feedback nonlinear oscillators

Murphy

Cohen

Ravoori

et al. 2010

Phil. Trans. R. Soc. A.

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We describe a flexible and modular delayed-feedback nonlinear oscillator that is capable of generating a wide range of dynamical behaviours, from periodic oscillations to high-dimensional chaos. The oscillator uses electro-optic modulation and fibre-optic transmission, with feedback and filtering implemented through real-time digital signal processing. We consider two such oscillators that are coupled to one another, and we identify the conditions under which they will synchronize. By examining the rates of divergence or convergence between two coupled oscillators, we quantify the maximum Lyapunov exponents or transverse Lyapunov exponents of the system, and we present an experimental method to determine these rates that does not require a mathematical model of the system. Finally, we demonstrate a new adaptive control method that keeps two oscillators synchronized, even when the coupling between them is changing unpredictably.

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Photonic Integrated Device for Chaos Applications in Communications

Cited by 184 publications

References 26 publications

Physics and applications of laser diode chaos

Physics and applications of laser diode chaos

Complex photonics: Dynamics and applications of delay-coupled semiconductors lasers

Complex dynamics and synchronization of delayed-feedback nonlinear oscillators

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