Counterpropagating spatial solitons in reflection gratings with a longitudinally modulated Kerr nonlinearity
We investigate quasi-Bragg-matched counterpropagating spatial solitons in a reflection grating in the presence of a longitudinally modulated Kerr nonlinearity. The physical interplay of linear reflection and Kerr self-focusing with the modulation in the nonlinearity yields a variety of elaborate sel...
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Published in | Physical review letters Vol. 98; no. 4; p. 043901 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
United States
26.01.2007
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Online Access | Get more information |
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Summary: | We investigate quasi-Bragg-matched counterpropagating spatial solitons in a reflection grating in the presence of a longitudinally modulated Kerr nonlinearity. The physical interplay of linear reflection and Kerr self-focusing with the modulation in the nonlinearity yields a variety of elaborate self-action mechanisms. We first analytically predict the existence of symmetric soliton pairs supported by a pure Kerr-like effective nonlinearity. We then analytically derive two families of solitons, associated with the linear grating eigenmodes, supported by an effective "incoherent" Kerr-like coupling arising from the exact balance between the modulation in the nonlinearity and the Kerr interaction due to beam interference. |
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ISSN: | 0031-9007 |
DOI: | 10.1103/PhysRevLett.98.043901 |