On homoclinic snaking in optical systems.
The existence of localized structures, including so-called cavity solitons, in driven optical systems is discussed. In theory, they should exist only below the threshold of a subcritical modulational instability, but in experiment they often appear spontaneously on parameter variation. The addition of a nonlocal nonlinearity may resolve this discrepancy by tilting the "snaking" bifurcation diagram characteristic of such problems.
Firth
W J
WJ
SUPA and Department of Physics, University of Strathclyde, 107 Rottenrow, G4 0NG Glasgow, Scotland.
Columbo
L
L
Maggipinto
T
T