Modulation instabilities in asymmetric nonlinear fiber coupler

He, Xiaodong; Tang, Tingting; Liu, Wenli

doi:10.1016/j.ijleo.2016.12.025

Cited by 8 publications

(3 citation statements)

References 8 publications

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“…The symbols a 1 and a 2 denote the coefficients of group velocity dispersion. Moreover, κ j , j=1, 2, are the coupling coefficients, and the terms including ξ j , μ j , and ζ j characterise the properties of optical metamaterials [14].…”

Section: Twin-core Couplersmentioning

confidence: 99%

“…Therefore, the extraction of soliton solutions of optical couplers is an important topic that carries relevant benefits in the area of telecommunications. We find several integration algorithms to fulfill this task such as the trial function, undetermined coefficients, sine-cosine function, Bernoulli equation, -expansion, and several others techniques [2,[12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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Traveling wave solutions to nonlinear directional couplers by modified Kudryashov method

et al. 2020

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This work finds several new traveling wave solutions for nonlinear directional couplers with optical metamaterials by means of the modified Kudryashov method. This model can be used to distribute light from a main fiber into one or more branch fibers. Two forms of optical couplers are considered, namely the twin- and multiple- core couplers. These couplers, which have applications as intensity-dependent switches and as limiters, are studied with four nonlinear items namely the Kerr, power, parabolic, and dual-power laws. The restrictions on the parameters for the existence of solutions are also examined. The 3D- and 2D figures are introduced to discuss the physical meaning for some of the gained solutions. The performance of the method shows the adequacy , power, and ability for applying to many other nonlinear evolution models.

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Section: Twin-core Couplersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Traveling wave solutions to nonlinear directional couplers by modified Kudryashov method

et al. 2020

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“…The nonlinearity in such fibers exerts significant effects on the performance of the MDM system, and much effort has been made to explore the nonlinear effects [55][56][57][58][59][60]. As a convenient way to know the interactions between the dispersion and nonlinearity, MI in TCFs has been studied a lot in the literatures [61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76][77]. For pulse wavelength near the zero-dispersion wavelength [31], or ultrashort pulses of terahertz, or for the dispersion engineered photonic crystal waveguides [78], we have to take into account the high-order dispersion effects, especially the FOD.…”

Section: Introductionmentioning

confidence: 99%

The effects of fourth-order dispersion on modulation instabilities in two-core optical fibers with asymmetric CW state

Li¹,

Sun²,

Qiao³

et al. 2020

Phys. Scr.

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The effects of fourth-order dispersion (FOD) on modulation instabilities in the twin-core optical fibers with the asymmetric CW state are studied systematically. When the product of the group velocity dispersion and FOD is negative, in the anomalous dispersion regime, two new MI bands in the high frequency are generated with one band either having the equivalent gain with that of original band or dominating the MI depending on the FOD value; in the normal dispersion, a new dominant MI band in the high frequency is always generated, and the original MI bands vanish in the presence of FOD at total power above a critical value. When the product of the group velocity dispersion and FOD is positive, the main effect of FOD is to shift the MI band to the low frequency and reduce the bandwidth simultaneously with minor effects on the instability gain. We also find that the effects of linear coupling coefficient dispersion can be significantly suppressed in the presence of FOD especially for the case of negative product of the group velocity dispersion and FOD. Finally, the effects of FOD on MI are verified numerically by launching continuous waves with the wave propagation method. Our results should provide very benificial information for successfully observing MI in TCFs or MI related applications with TCFs.

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Solitons in nonlinear directional couplers with optical metamaterials by first integral method

Arshed

Biswas

Alzahrani

et al. 2020

Optik

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Modulation instabilities in asymmetric nonlinear fiber coupler

Cited by 8 publications

References 8 publications

Traveling wave solutions to nonlinear directional couplers by modified Kudryashov method

Traveling wave solutions to nonlinear directional couplers by modified Kudryashov method

The effects of fourth-order dispersion on modulation instabilities in two-core optical fibers with asymmetric CW state

Solitons in nonlinear directional couplers with optical metamaterials by first integral method

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