Computer simulation of the propagation of extremely short femtosecond pulse in single-mode fiber with shifted dispersion characteristics

We present the results of theoretical study of generation of spectral supercontinuum by an extremely short femtosecond laser pulse with the central wavelength corresponding to zero dispersion, propagating in a single-mode fiber with shifted dispersion characteristics. High-order nonlinear Schrödinge...

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Bibliographic Details
Published inOptical memory & neural networks Vol. 20; no. 4; pp. 237 - 246
Main Authors Hovhannisyan, D. L., Chaltykyan, V. O., Hovhannisyan, A. O., Hovhannisyan, G. D., Hovhannisyan, K. A.
Format Journal Article
LanguageEnglish
Published Heidelberg Allerton Press, Inc 01.12.2011
Subjects
Complexity
Computer Science
Information Storage and Retrieval
Raman response
finite difference
nonlinear Schrödinger equation
Wigner transformation
method of lines
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Summary:We present the results of theoretical study of generation of spectral supercontinuum by an extremely short femtosecond laser pulse with the central wavelength corresponding to zero dispersion, propagating in a single-mode fiber with shifted dispersion characteristics. High-order nonlinear Schrödinger equation (HONSE) is considered with higher-order terms taken into account. Numerical integration of HONSE is performed by the method of lines. Time dependence of instantaneous frequencies of the femtosecond pulse is obtained. The evolution of the pulse spectrum is calculated and the medium length dependence of the spectrum width is obtained. For study of the time-frequency dynamics of extremely short femtosecond laser pulse propagating in single-mode optical fiber with allowance for higher order terms, the Wigner transformation (WT) was used.
ISSN:1060-992X
1934-7898
DOI:10.3103/S1060992X11040047