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\begin{document}

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\title[]{Generation of Two-Soliton and Three-Soliton Molecules in Circular Fiber Array Laser}% Force line breaks with \\

\author{Akram Niknafs}
 %%\altaffiliation[]{ NiknafsAkram@sci.uk.ac.ir}%Lines break automatically or can be forced with \\
\affiliation{
 Department of Physics, Shahid Bahonar University, Kerman, Iran%\\This line break forced with \textbackslash\textbackslash
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\author{Hossein Rooholamininejad}
 \altaffiliation[]{ Rooholamini@uk.ac.ir}%Lines break automatically or can be forced with \\
\affiliation{
Department of Physics, Shahid Bahonar University, Kerman, Iran%\\This line break forced with \textbackslash\textbackslash
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\author{Alireza Bahrampour}
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 Department of Physics, Sharif University of Technology, Tehran, Iran%\\This line break forced with \textbackslash\textbackslash
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\begin{abstract}

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\end{abstract}

\pacs{}% PACS, the Physics and Astronomy
                             % Classification Scheme.
\keywords{Terahertz Vortices Generation,  Plasma Vortex,   Orbital Angular Momentum, Ponderomotive Force Nonlinearity, Collisional Nonlinearity}%Use showkeys class option if keyword
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\maketitle





\begin{figure}[!hi]
\centering
\includegraphics[width=0.35\textwidth]{11} % Give a unique label
\caption{A schematic view of a circular fiber array with a central fiber which is used to generate soliton molecules. One fiber is at the center of the array $(n=0)$ and $N$ fibers are located on the circumference symmetrically. Each peripheral fiber has linear coupling with the central fiber $(C_0)$ and also with its neighbors $(C_1)$.}
\label{1fig}
\end{figure}

\begin{figure}[iht]
\centering
\subfloat[]{\includegraphics[width=6cm]{11}}
\qquad
\subfloat[]{\includegraphics[width=6cm]{11}}
\caption{(a) Two peripheral fibers $(n=3$ and $5)$ are excited with Gaussian pulse. The parameters in the central fiber are:($D_0,\epsilon_0, \beta_0,\nu_0,\mu_0,\delta_0)=(-1,1,0.08,$ $0.01,-0.02 ,-0.01$) and those of peripheral fibers are: ($D_n,\epsilon_n,\beta_n, \nu_n, \mu_n,\delta_n)=(-1, 0,0.32,0.01,-0.02,-0.3)$, $n=1,2,3,...,6.$  A two-soliton molecule is generated in the central fiber of  circular fiber array laser with the binding energy of $-5\%$. The output pulse of the central fiber has been shown in Fig.(b).}
\label{2fig}
\end{figure}  
\subsection{Gaussian} 	





\section*{References}


\bibliography{ref}

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