Impact of higher order dispersion and nonlinearities on modulational instability in a dual-core optical fiber

Nair, Aparna A.; Porsezian, K.; Jayaraju, M.

doi:10.1140/epjd/e2017-80437-6

Cited by 16 publications

(12 citation statements)

References 43 publications

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“…So, in order to achieve widely spaced parametric sidebands, pump should lie in the normal dispersion (β 2p > 0) regime (when β 4p < 0) [56], or in the anomalous dispersion β 2p < 0 regime (when β 4p > 0) [54,57]. The perfect PM is forbidden for fibers with both β 2p > 0 and β 4p > 0.…”

Section: Fwm: Humidity Dependencementioning

confidence: 99%

Designing tunable narrowband parametric source in Chalcogenide-based dynamic fiber geometry

Chatterjee

Khan

2020

J. Opt.

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We numerically investigate the generation of spectrally isolated narrowband tunable parametric sources by continuous-wave pumping a specially designed gelatin-coated chalcogenide-silica dynamic fiber in the normal dispersion regime. The relative humidity (RH) dependent phase matching dominated by fourth order dispersion has been exploited for the first time, to the best of our knowledge, to produce far-detuned new wavelengths. A tunable source in the range of 0.96–2.5 μm with a tuning rate of 1.3 THz/%RH has been designed by milliwatt pumping a 30 cm long fiber at 1.395 μm. Additionally, the sideband tailorability of about 50 THz close to the visible band was achieved by selectively exciting higher-order fiber modes (HE21) in the anomalous dispersion regime at 0.91 μm. We emphasize that the parametric sources from the proposed host would be extremely useful in short-wave infrared spectroscopy and biomedical applications.

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Section: Fwm: Humidity Dependencementioning

confidence: 99%

Designing tunable narrowband parametric source in Chalcogenide-based dynamic fiber geometry

Chatterjee

Khan

2020

J. Opt.

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“…However, the role of coupling dispersion in parametric amplification has not yet been investigated analytically to the best of our knowledge. The impact on the modulation instability spectrum of the first coefficient in the Taylor expansion of the coupling around the pump frequency has been theoretically studied in the past for two evanescently coupled core fibers (Li et al, 2011; and also in generalized forms of the two coupled nonlinear Schrödinger equations (Nithyanandan et al, 2013;Nair et al, 2018;Li et al, 2020a;Li et al, 2020b). It has been shown that this term can lead to the generation of additional spectral sidebands both in the normal and in the anomalous dispersion regime, provided that the pump power distribution is asymmetric in the two waveguides.…”

Section: Introductionmentioning

confidence: 99%

Parametric amplification in coupled nonlinear waveguides: The role of coupling dispersion

2023

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We present the theory of parametric amplification in coupled nonlinear waveguides considering the frequency dependency of the coupling strength. We show that coupling dispersion can indeed compensate for the uncoupled individual waveguides dispersion enabling a substantial tailoring of the gain spectrum. Our theory describes both phase-sensitive and phase-insensitive operational modes, it can be straightforwardly generalized to include arbitrary higher-order waveguide and coupling dispersion and its predictions agree very well with numerical simulations both in the presence and in the absence of waveguide losses. It provides a tool for the design of novel versatile parametric amplifiers based both on coupled integrated waveguides and dual-core fibers too.

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“…Breeding in a directional coupler is modeled by the system of equation of coupled nonlinear Schrödinger equation (NLSE) [27] and the dual core optical fibers equation [28][29][30][31][32] is one of them. As per our knowledge, few researchers has been studied the dual core optical fibers equation via different schemes namely, Younis et al [28] through the ( ′ ) ⁄ -expansion method, Abdelrahman and Moaaz [29] used Riccati-Bernoulli sub-ODE method, Nair et al [30] via modulational instability (MI) analysis, Baskonus et al [31] via the extended sinh-Gordon equation expansion method, Shamseldeen et al [32] via linear stability analysis.…”

Section: Introductionmentioning

confidence: 99%

Study of the parametric effects on soliton propagation in optical fibers through two analytical methods

Islam

Matkan

2021

Opt Quant Electron

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The dual-core optical fiber has significant applications in optical electronics for long-wave propagation, especially in telecommunication fibers. The aim of this article is to study the parametric effects on solitary wave propagation and characteristic aspects of long-wave traveling through optical fibers by establishing some standard and wide-spectrum solutions via the improved Bernoulli sub-equation function (IBSEF) method and the new auxiliary equation (NAE) approach. The investigated solitary wave solutions are ascertained as an integration of hyperbolic, exponential, rational and trigonometric functions and can be extensively applicable in optics. The physical significance of the solutions attained is illustrated for the definite values of the included parameters through depicting the 3D profiles. The solitons profile represents different types of waves associated with the free parameters which are related to the wave number and velocity of the solutions. It turns out that the obtained solutions through both the methods are potential and might be used in further works to interpret the various fields in telecommunication fiber which can reduce casualties that ensue in essence.

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Impact of higher order dispersion and nonlinearities on modulational instability in a dual-core optical fiber

Cited by 16 publications

References 43 publications

Designing tunable narrowband parametric source in Chalcogenide-based dynamic fiber geometry

Designing tunable narrowband parametric source in Chalcogenide-based dynamic fiber geometry

Parametric amplification in coupled nonlinear waveguides: The role of coupling dispersion

Study of the parametric effects on soliton propagation in optical fibers through two analytical methods

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