期刊:Journal of The Optical Society of America B-optical Physics [The Optical Society] 日期:2020-08-04卷期号:37 (11): A121-A121被引量:10
标识
DOI:10.1364/josab.394237
摘要
In this paper, we introduce another technique of Airy pulse regeneration in fiber links using the interaction between group velocity dispersion (GVD) and the initial value of frequency chirp. This technique of regeneration consists of managing the product of GVD×chirp over each piece fi=1…N of fiber line having N pieces in the case of zero-third-order dispersion (TOD) systems. This work follows [ Phys. Rev. A 89 , 043817 ( 2014 ) PLRAAN 1050-2947 10.1103/PhysRevA.89.043817 ], which studied the nonzero-TOD system. Three models are considered: the first consists of alternation of the GVD with the chirp being constant, the second consists of alternation of the chirp with a constant GVD, and the third consists of the alternation of both parameters. Through the numerical results obtained in the linear optical system, we show that the first model with an initial condition corresponding to the asymmetric inversion (A.I.) mechanism, GVD×chirp<0 , is the best at yielding interesting regeneration for both a single finite energy Airy pulse (FEAP) and for the symmetric FEAPs previously defined in [ Opt. Commun. 399 , 16 ( 2017 ) OPCOB8 0030-4018 10.1016/j.optcom.2017.04.064 ]. There is a need to achieve the A.I. mechanism on each piece of fiber through the condition s×C′<0 , where the GVD sign s alternates and C′ is the intrinsic chirp developed by the pulse itself within the current piece fi before its injection into the next piece fi+1 . The main parameter that is beneficial for this kind of chirp-dispersion management (CDM) regeneration of FEAPs in fiber links is found to be the initial chirp whose dimensionless optimal absolute value is |C|∈[1;3] in order to combine the quality and good intensity. In contrast, the temporal gap τB and nonlinearity have a deleterious impact on regeneration. Moreover, the noise in the regeneration originates from the alternation of the chirp, the simultaneous alternation of both the GVD and the chirp, the drastic increase in chirp, and nonlinearity.