Research output: Contribution to journal › Article › peer-review
Exponential fourth order schemes for direct Zakharov-Shabat problem. / Medvedev, Sergey; Vaseva, Irina; Chekhovskoy, Igor et al.
In: Optics Express, Vol. 28, No. 1, 01.01.2020, p. 20-39.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Exponential fourth order schemes for direct Zakharov-Shabat problem
AU - Medvedev, Sergey
AU - Vaseva, Irina
AU - Chekhovskoy, Igor
AU - Fedoruk, Mikhail
PY - 2020/1/1
Y1 - 2020/1/1
N2 - Nowadays, improving the accuracy of computational methods to solve the initial value problem of the Zakharov-Shabat system remains an urgent problem in optics. In particular, increasing the approximation order of the methods is important, especially in problems where it is necessary to analyze the structure of complex waveforms. In this work, we propose two finite-difference algorithms of fourth order of approximation in the time variable. Both schemes have the exponential form and conserve the quadratic invariant of Zakharov-Shabat system. The second scheme allows applying fast algorithms with low computational complexity (fast nonlinear Fourier transform).
AB - Nowadays, improving the accuracy of computational methods to solve the initial value problem of the Zakharov-Shabat system remains an urgent problem in optics. In particular, increasing the approximation order of the methods is important, especially in problems where it is necessary to analyze the structure of complex waveforms. In this work, we propose two finite-difference algorithms of fourth order of approximation in the time variable. Both schemes have the exponential form and conserve the quadratic invariant of Zakharov-Shabat system. The second scheme allows applying fast algorithms with low computational complexity (fast nonlinear Fourier transform).
KW - NONLINEAR FOURIER-TRANSFORM
KW - DIRECT SCATTERING TRANSFORM
KW - INVERSE SYNTHESIS
KW - TRANSMISSION
KW - MODULATION
KW - ALGORITHMS
KW - COMPUTATION
KW - ACCURACY
KW - STANDARD
UR - http://www.scopus.com/inward/record.url?scp=85078065570&partnerID=8YFLogxK
U2 - 10.1364/OE.377140
DO - 10.1364/OE.377140
M3 - Article
C2 - 32118938
AN - SCOPUS:85078065570
VL - 28
SP - 20
EP - 39
JO - Optics Express
JF - Optics Express
SN - 1094-4087
IS - 1
ER -
ID: 23246022