Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optical Harmonic Vernier Effect: A New Tool for High Performance
  Interferometric Fibre Sensors   The optical Vernier effect magnifies the sensing capabilities of an
interferometer, allowing for unprecedented sensitivities and resolutions to be
achieved. Just like a caliper uses two different scales to achieve higher
resolution measurements, the optical Vernier effect is based on the overlap in
the responses of two interferometers with slightly detuned interference
signals. Here, we present a novel approach in detail, which introduces optical
harmonics to the Vernier effect through Fabry-Perot interferometers, where the
two interferometers can have very different frequencies in the interferometric
pattern. We demonstrate not only a considerable enhancement compared to current
methods, but also better control of the sensitivity magnification factor, which
scales up with the order of the harmonics, allowing us to surpass the limits of
the conventional Vernier effect as used today. In addition, this novel concept
opens also new ways of dimensioning the sensing structures, together with
improved fabrication tolerances.

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The categories of this paper are: hep-th
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The categories of this paper are: adap-org
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The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
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The categories of this paper are: atom-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-bio
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The categories of this paper are: gr-qc
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The categories of this paper are: chao-dyn
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The categories of this paper are: alg-geom
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The categories of this paper are: econ
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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: math
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The categories of this paper are: astro-ph
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The categories of this paper are: plasm-ph