Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Light tunneling inhibition in longitudinally modulated Bragg-guiding
  arrays   We consider waveguide array in which defect channels with reduced refractive
index are spaced periodically and the light guiding is achieved due to Bragg
reflection. We show that tunneling between defects can be inhibited using
out-of-phase longitudinal modulation of refractive index exclusively in defect
channels. Tunneling inhibition is almost perfect for strongly localized modes
with propagation constants close to the gap center.

27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th