TY - JOUR
T1 - Symmetry breaking and manipulation of nonlinear optical modes in an asymmetric double-channel waveguide
AU - Li, Rujiang
AU - Lv, Fei
AU - Li, Lu
AU - Xu, Zhiyong
PY - 2011/9/28
Y1 - 2011/9/28
N2 - We study light-beam propagation in a nonlinear coupler with an asymmetric double-channel waveguide and derive various analytical forms of optical modes. The results show that the symmetry-preserving modes in a symmetric double-channel waveguide are deformed due to the asymmetry of the two-channel waveguide, yet such a coupler supports the symmetry-breaking modes. The dispersion relations reveal that the system with self-focusing nonlinear response supports the degenerate modes, while for self-defocusing medium the degenerate modes do not exist. Furthermore, nonlinear manipulation is investigated by launching optical modes supported in double-channel waveguide into a nonlinear uniform medium.
AB - We study light-beam propagation in a nonlinear coupler with an asymmetric double-channel waveguide and derive various analytical forms of optical modes. The results show that the symmetry-preserving modes in a symmetric double-channel waveguide are deformed due to the asymmetry of the two-channel waveguide, yet such a coupler supports the symmetry-breaking modes. The dispersion relations reveal that the system with self-focusing nonlinear response supports the degenerate modes, while for self-defocusing medium the degenerate modes do not exist. Furthermore, nonlinear manipulation is investigated by launching optical modes supported in double-channel waveguide into a nonlinear uniform medium.
UR - http://www.scopus.com/inward/record.url?scp=80053328353&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.84.033850
DO - 10.1103/PhysRevA.84.033850
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AN - SCOPUS:80053328353
SN - 1050-2947
VL - 84
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 3
M1 - 033850
ER -