Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fiber propagation of vector modes   Here we employ both dynamic and geometric phase control of light to produce
radially modulated vector-vortex modes, the natural modes of optical fibers. We
then measure these modes using a vector modal decomposition set-up as well as a
tomography measurement, the latter providing a degree of the non-separability
of the vector states, akin to an entanglement measure for quantum states. We
demonstrate the versatility of the approach by creating the natural modes of a
step-index fiber, which are known to exhibit strong mode coupling, and measure
the modal cross-talk and non-separability decay during propagation. Our
approach will be useful in mode division multiplexing schemes for transport of
classical and quantum states.

19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc