Engineering deceleration and acceleration of soliton emitted from Airy pulse with quadratic phase modulation in optical fibers without high-order effects.

Lifu Zhang,Jinggui Zhang,Dianyuan Fan,Ying Li,Jianqin Deng,Haizhe Zhong,Kun Liu

doi:10.1038/srep11843

Lifu Zhang, Jinggui Zhang + Show 5 more

Open Access

https://doi.org/10.1038/srep11843

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Abstract

Soliton propagation direction can be engineered in optical fibers in the presence of high-order effects (HOEs). It is well known that Raman effects can decelerate the soliton. Here we investigate the manipulation of the deceleration or acceleration of soliton emitted from Airy pulse whose spectrum is imposed an initial quadratic phase modulation (QPM) in optical fibers in the absence of HOEs. We show that, under the action of the anomalous second-order dispersion (SOD) and Kerr nonlinearity, Airy pulse with QPM is able to emit soliton with acceleration or deceleration depending on whether the QPM is negative or positive, and at a rate that is determined by the magnitude of QPM. The reason is that the acceleration behaviors of incident Airy pulse is altered depending on whether SOD and QPM have the same or opposite signs. Our study shows the possibility of controlling and manipulating the soliton propagation and interaction in optical fibers without HOEs, by purposely choosing appropriate QPM parameter of an Airy pulse.

Highlights

According to the analytical expression of Eq (6), Fig. 2 shows the temporal evolution of Airy pulse as a function of propagation distance for different values of quadratic phase modulation (QPM) in the anomalous and normal dispersion regimes
It was demonstrated that the joint action of the second-order dispersion (SOD) and frequency chirp (FC) with the same sign leads to enhanced dispersion in the pulse shape; on the other hand, when the pulse dynamics is determined by SOD with a sign opposite to that of the FC, the Airy pulse first undergoes an initial compression, reaches a breakup area, and regenerates a new Airy pattern with an opposite acceleration
Can the soliton propagation direction be controlled in the absent of high-order effects? Our study indicates that the deceleration or acceleration of soliton can be manipulated for the nonlinear propagation of Airy pulse with quadratic phase modulation (QPM) imposed by purposely choosing the magnitude and sign of its initial QPM

Summary

Introduction

According to the analytical expression of Eq (6), Fig. 2 shows the temporal evolution of Airy pulse as a function of propagation distance for different values of QPM in the anomalous and normal dispersion regimes. When the QPM is not imposed on the incident Airy pulse, the propagation dynamics of Airy pulse is completely the same for the cases of anomalous (s = − 1, Fig. 2(b)) and normal (s = 1, Fig. 2(e)) dispersions.

Results

Conclusion