Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Polarization rotation enhancement by high-order waveguide mode coupling
  in magnetophotonic crystals   Inter-modal coupling in photonic bandgap optical channels in magnetic films
is used to leverage the transverse-electric (TE) to transverse-magnetic (TM)
mode conversion due to the Faraday Effect. The underlying mechanism is traced
to the dependence of the grating coupling-constant on the modal refractive
index and the mode profile of the propagating beam, a feature that arises in
waveguide propagation and is not present in normal-incidence stack
magnetophotonic crystals. Large changes in polarization near the band edges are
observed in first and second orders as a result of the photonic bandgap
structure. Extreme sensitivity to linear birefringence exists in second order.

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The categories of this paper are: ao-sci
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The categories of this paper are: econ
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The categories of this paper are: astro-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-bio
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The categories of this paper are: nlin
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-ph
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The categories of this paper are: eess
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The categories of this paper are: funct-an
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The categories of this paper are: gr-qc
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The categories of this paper are: nucl-th
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The categories of this paper are: q-fin
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The categories of this paper are: hep-th
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The categories of this paper are: atom-ph