Abstract
We uncover a strong coupling between nonlinearity and diffraction in a photonic crystal at the supercollimation point. We show that this is modeled by a nonlinear diffraction term in a nonlinear-Schrödinger-type equation in which the properties of solitons are investigated. Linear stability analysis shows solitons are stable in an existence domain that obeys the Vakhitov-Kolokolov criterium. In addition, we investigate the influence of the nonlinear diffraction on soliton collision scenarios.
Original language | English |
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Pages (from-to) | 1762-1764 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 33 |
Issue number | 15 |
DOIs | |
Publication status | Published - 1 Aug 2008 |
Externally published | Yes |