Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Broadband self-switching of femtosecond pulses in highly nonlinear high
  index contrast dual-core fibre   In this paper, we demonstrate a pulse energy-governed nonlinear
self-switching of femtosecond pulses at wavelength of 1700 nm in a highly
nonlinear high index contrast dual-core fibre. The fibre structure is composed
of two microdimension cores and a solid cladding made of two thermally matched
soft glasses developed in-house. A double switching behaviour under monotonic
increase of the input pulse energy from 1 nJ to 3 nJ was observed at 35 mm
fibre length in its anomalous dispersion region. A spatial intensity
distribution measurement identified a switching contrast of 16.7 dB, and the
registered spectra of the two output channels revealed a broadband switching
behaviour within 150 nm. The obtained results indicate a novel type of
solitonic switching and represent a significant progress in comparison to the
previous experimental works and has a high application potential.

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The categories of this paper are: chem-ph
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The categories of this paper are: q-alg
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The categories of this paper are: atom-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int
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The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: eess
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The categories of this paper are: nlin
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-th
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The categories of this paper are: stat
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The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con