Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strongly Resonant Transmission of Electromagnetic Radiation in Periodic
  Anisotropic Layered Media   The electromagnetic dispersion in periodic layered media can be tailored and
their resonant properties can be considerably improved by utilizing anisotropic
materials. Periodic structures with a photonic band edge split into two parts,
or so-called split band edge, exhibit superior resonant properties including
exceptionally high Q-values of transmission resonances and nearly perfect
impedance matching at the boundaries, even when the number of unit cells N is
not large. A microwave transmission resonance with Q~220 is demonstrated in a
periodic stack of form-birefringent layers with N=12 realized in a waveguide
geometry.

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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: nlin
30
The categories of this paper are: q-alg
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The categories of this paper are: chao-dyn
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The categories of this paper are: adap-org
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The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
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The categories of this paper are: math-ph
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The categories of this paper are: q-fin
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The categories of this paper are: plasm-ph
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The categories of this paper are: cs
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The categories of this paper are: dg-ga
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The categories of this paper are: math
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con