Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonlinear compression of autonomous similaritons in the cubic-quintic
  nonlinear Schr\"odinger equation model with nonlinear gain   We describe similariton pulse propagation in double-doped optical fibers with
the aid of self-similarity analysis of the cubic-quintic nonlinear
Schr\"odinger equation with varying dispersion, nonlinearity, gain or
absorption, and nonlinear gain. Exact similariton pulses that can propagate
self similarly subject to simple scaling rules of this model have been found
using a fractional transform. By appropriately tailoring the dispersion profile
and nonlinearity, the condition for optimal pulse compression has been
obtained. Also, nonlinear chirping of the trigonometric solution has been
demonstrated.

4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph