Stable localized modes in asymmetric waveguides with gain and loss
It is shown that asymmetric waveguides with gain and loss can support a stable propagation of optical beams. This means that the propagation constants of modes of the corresponding complex optical potential are real. A class of such waveguides is found from a relation between two spectral problems...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Optical Society of America
2014
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/37770/ http://irep.iium.edu.my/37770/ http://irep.iium.edu.my/37770/ http://irep.iium.edu.my/37770/1/ol-39-14-4215.pdf |
| Summary: | It is shown that asymmetric waveguides with gain and loss can support a stable propagation of optical beams. This
means that the propagation constants of modes of the corresponding complex optical potential are real. A class of
such waveguides is found from a relation between two spectral problems. A particular example of an asymmetric
waveguide, described by the hyperbolic functions, is analyzed. The existence and stability of linear modes and of
continuous families of nonlinear modes are demonstrated. |
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