Abstract
Abstract It is predicted that grey spatial solitons can exist in biased photorefractive polymer. The functional relationships of the transverse velocity, spatial width and phase profile of these grey solitons with their normalized intensity and degree of ‘greyness’ are obtained. The polarization properties of these grey solitons are discussed. The intensity full width at half maximum of these grey solitons is found to be inversely proportional to the absolute value of the external bias field.
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