Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sharp bends in photonic crystal waveguides as nonlinear Fano resonators   We demonstrate that high transmission through sharp bends in photonic crystal
waveguides can be described by a simple model of the Fano resonance where the
waveguide bend plays a role of a specific localized defect. We derive effective
discrete equations for two types of the waveguide bends in two-dimensional
photonic crystals and obtain exact analytical solutions for the resonant
transmission and reflection. This approach allows us to get a deeper insight
into the physics of resonant transmission, and it is also useful for the study
and design of power-dependent transmission through the waveguide bends with
embedded nonlinear defects.

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The categories of this paper are: plasm-ph
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The categories of this paper are: econ
2
The categories of this paper are: math
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The categories of this paper are: funct-an
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The categories of this paper are: comp-gas
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The categories of this paper are: gr-qc
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The categories of this paper are: nucl-ex
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-ex
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The categories of this paper are: stat
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
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The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th