Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonlinear photonic crystal fibres: pushing the zero-dispersion toward
  the visible   The strong waveguide dispersion in photonic crystal fibres provides unique
opportunities for nonlinear optics with a zero-dispersion wavelength
$\lambda_0$ far below the limit of ~1.3 micron set by the material dispersion
of silica. By tuning the air-hole diameter d, the pitch Lambda, and the number
of rings of air holes N, the strong waveguide dispersion can in principle be
used to extend lambda_0 well into the visible, albeit to some extend at the
cost of multimode operation. We study in detail the interplay of the
zero-dispersion wavelength, the cut-off wavelength lambda_c, and the leakage
loss in the parameter space spanned by d, Lambda, and N. As a particular result
we identify values of d (~500 nm) and Lambda (~700 nm) which facilitate the
shortest possible zero-dispersion wavelength (~700 nm) while the fibre is still
single-mode for longer wavelengths.

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The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat