Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Efficient side-coupling to photonic crystal nanobeam cavities via
  state-space overlap   We present design guidelines for realizing side-coupled photonic crystal
nanobeam (PCN) cavities with efficient coupling to low order resonances through
adjusting the overlap of the PCN cavity mode and a feeding bus waveguide in
both physical and k-space. We show that optimal side-coupled configurations
function at a non-zero k-vector offset between the bus waveguide and PCN cavity
modes. The straightforward design of side-coupled PCNs with high contrast
resonances opens the door to their practical implementation in multiplexed,
on-chip photonic devices.

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The categories of this paper are: atom-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: mtrl-th
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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: plasm-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: math-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: nucl-th
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-th