Observation of an optical event horizon in a silicon-on-insulator photonic wire waveguide

Ciret, Charles; Léo, François; Kuyken, Bart; Roelkens, Günther; Gorza, Simon-Pierre

doi:10.1364/oe.24.000114

Cited by 32 publications

(39 citation statements)

References 42 publications

(64 reference statements)

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“…This broadening is the result of the cross-phase modulation induced on the CW probe by the soliton pulse. Further propagation shows the emergence of an idler wave as demonstrated in [14]. The simulations performed by solving the Eqs.…”

Section: Polmentioning

confidence: 97%

“…We can cite studies involving the superimposition of a linear wave to an intense pump at the waveguide input [9,10,14], or the interaction between two pulses [1]. More recent studies have also investigated the interaction of an intense pulse with its own dispersive wave (DW) [15] or the trapping of a DW between two solitons [16,17].…”

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confidence: 99%

“…They are assumed to be constant at 2 dB/cm for both polarizations on the wavelength range of interest. The dispersion of the nonlinearity is taken into account by the shock terms, as commonly used in previous studies [6,14]. Finally, γ ν , γ µν are the complex nonlinear parameters which are responsible for the self-and the crossphase modulation effects, respectively.…”

mentioning

confidence: 99%

“…This can simply be understood by the absence of a broad Raman gain close to the pump wavelength and by the low pulse energy and the carrier relaxation time (≈ 1 ns) which is much shorter than the delay between two pulses (12 ns). As shown in [14], the absence of the Raman soliton self frequency shift is beneficial for potential applications of optical event horizons. The experimental setup and the simulated dispersion curves for both polarizations are shown in Fig.…”

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confidence: 99%

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Scattering of a cross-polarized linear wave by a soliton at an optical event horizon in a birefringent nanophotonic waveguide

Ciret

Gorza

2016

Opt. Lett.

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The scattering of a linear wave on an optical event horizon, induced by a cross polarized soliton, is experimentally and numerically investigated in integrated structures. The experiments are performed in a dispersion-engineered birefringent silicon nanophotonic waveguide. In stark contrast with co-polarized waves, the large difference between the group velocity of the two cross-polarized waves enables a frequency conversion almost independent on the soliton wavelength. It is shown that the generated idler is only shifted by 10 nm around 1550 nm over a pump tuning range of 350 nm. Simulations using two coupled full vectorial nonlinear Schrödinger equations fully support the experimental results.Nonlinear interactions between linear waves and solitons attract a tremendous amount of interest in the scientific community for many years. In this framework, interactions between waves of similar group velocities particularly draw the attention of researchers for their potential useful applications such as frequency converters [1] or for future optical transistor-like devices [2]. In this particular process, the propagation of an intense solitonic pump in a Kerr medium induces a moving refractive index perturbation which in turn leads to a frequency conversion of a weak probe wave through a cross-phase modulation (XPM) process. In the context of supercontinuum (SC) generation, this process helps understanding the underlying physics of the spectral broadening [3], and has also been demonstrated to enable the generation of highly coherent broadband SC [4,5] in a complementary manner from the well-known process involving the soliton fission [6][7][8]. Recently, this nonlinear interaction has been reinterpreted as the optical analog of the event horizon of black and white holes [9,10]. As the propagation takes place in a dispersive media, the frequency conversion of the probe wave is accompanied by a modification of its group velocity, which is either accelerated or decelerated preventing any crossing between the two waves. The intense pulse thus constitutes an horizon that light can neither join nor escape. These so-called optical event horizons have thus also been largely studied for their analogy with general relativity and in particular with the Hawking radiation [9].Since its first theoretical prediction made by Yulin et al. a decades ago [11,12], and its experimental observation in the context of SC generation in optical fibers [13], numerous experimental demonstrations have been realized. We can cite studies involving the superimposition of a linear wave to an intense pump at the waveguide input [9,10,14], or the interaction between two pulses [1]. More recent studies have also investigated the interaction of an intense pulse with its own dispersive wave (DW) [15] or the trapping of a DW between two solitons [16,17]. Interactions involving higher order solitons [18] or dark solitons [19] have also been considered. Owing to the essential role played by the dispersion properties of the structure for the observation of ...

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Section: Polmentioning

confidence: 97%

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confidence: 99%

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confidence: 99%

mentioning

confidence: 99%

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Scattering of a cross-polarized linear wave by a soliton at an optical event horizon in a birefringent nanophotonic waveguide

Ciret

Gorza

2016

Opt. Lett.

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“…The strong modal confinement occurring in these structures also implies that the optical intensity in these waveguides is much larger (by 2 or 3 orders of magnitude) than that in standard single-mode fibers. As a consequence, these structures have proven to be ideal candidates for all-optical signal processing thanks to highly efficient non-linear optical effects [2,3] and, thanks to the nonlinear effects occurring in standard (220 nm high) SOI waveguides, many interesting results have already been reported in the scientific literature [4][5][6]. Differently from what has been thoroughly studied in the last decade, in this paper we focus our attention on reduced-height waveguides (100 nm), with different waveguide widths (from 500 to 800 nm).…”

Section: Introductionmentioning

confidence: 99%

Group-velocity dispersion in SOI-based channel waveguides with reduced-height

Marchetti¹,

Vitali²,

Lacava³

et al. 2017

Opt. Express

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We report on the experimental characterization, in the telecom C-band, of groupvelocity dispersion (D) in 100-nm high rectangular strip waveguides realized by silicon-oninsulator technology. We compare the experimental results with numerical predictions, showing that 100-nm high waveguides exhibit normal dispersion and that the absolute value of the dispersion coefficient D decreases as the waveguide width is increased. D at 1550 nm varies from -8130 to -3900 ps/(nm·km) by increasing the waveguide width from 500 to 800 nm.

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Soliton colliding in hybrid glass photonic crystal fiber for optical transistor switching

Yang,

Zhao,

et al. 2024

Nonlinear Dyn

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Observation of an optical event horizon in a silicon-on-insulator photonic wire waveguide

Cited by 32 publications

References 42 publications

Scattering of a cross-polarized linear wave by a soliton at an optical event horizon in a birefringent nanophotonic waveguide

Scattering of a cross-polarized linear wave by a soliton at an optical event horizon in a birefringent nanophotonic waveguide

Group-velocity dispersion in SOI-based channel waveguides with reduced-height

Soliton colliding in hybrid glass photonic crystal fiber for optical transistor switching

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