Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: X-ray Writing of Fiber Bragg Gratings (FBGs)   Fabrication of nanoscale optical Fiber Bragg Gratings (FBGs) is one of the
key manufacturing processes for fiber optics, which has many important
applications in data communication and distributed remote sensing at a distance
up to hundreds of kms. However, the fabrication of the FBGs is challenging. To
meet such need, we propose a novel method to write the FBGs using high-flux
synchrotron x-ray with a nanoscale gold/Si gratings to modulate the x-ray flux
and thus change the refractive index contrast of the optical fiber to form the
FBGs. The nanoscale gold/Si with high aspect ratio has been fabricated at the
Center for Nanoscale Materials (CNM) at Argonne National Laboratory (ANL) and
the preliminary experiment of x-ray writing of the optical fiber FBGs has been
carried out at the Advanced Photon Source (APS) of ANL. The preliminary
experiment shows promising result of the x-ray writing method of the optical
fiber FBGs.

26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an