Dark soliton in a Kerr defocusing medium.
The soliton solution in a Kerr defocusing medium is obtained. This solution is essentially a dip in a uniform plane wave and is thus called a dark soliton. This solution is then used to supply a qualitative explanation of the optical branching effect, which has been observed recently in a photorefractive slab waveguide.
Belanger
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Mathieu
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