Abstract
The coupled nonlinear Schrodinger equations with the harmonic potential and variable coefficients are studied for the pulse propagation in an inhomogeneous medium. With the modified Hirota method and symbolic computation, the bilinear form and analytic one-soliton solutions are obtained. A type of pulse compression technique is proposed, which can have the optical pulses compressed without any external devices. Moreover, the compressed pulses are pedestal free. The influences of the inhomogeneity of the refractive index, Kerr nonlinearity and diffraction are analyzed as well. The proposed technique may provide a different method for the pulse compression.
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