Resonance induced by a bound state in the continuum in a two-level nonlinear Fano-Anderson model

被引:29
作者
Bulgakov, Evgeny N. [1 ]
Sadreev, Almas F. [1 ]
机构
[1] Russian Acad Sci, Inst Phys, Krasnoyarsk 660036, Russia
关键词
TRANSMISSION;
D O I
10.1103/PhysRevB.80.115308
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We consider the transmission through a nonlinear media in the framework of a two-level nonlinear Fano-Anderson model. The model is realized in photonic crystal waveguide coupled with two off-channel defects with the instantaneous Kerr-type nonlinearity. We reveal a resonance and argue that it is a result of excitement of bound state in the continuum (BSC) by transmitted wave. The resonance induced by BSC is located at the energy of BSC with a width proportional to the amplitude of incident wave. The BSC exists at any distance between energy levels of the two-level nonlinear Fano-Anderson model that is fundamentally different from the linear case.
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页数:7
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