Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Design, fabrication and metrology of 10$\,\times\,$100 multi-planar
  integrated photonic routing manifolds for neural networks   We design, fabricate and characterize integrated photonic routing manifolds
with 10 inputs and 100 outputs using two vertically integrated planes of
silicon nitride waveguides. We analyze manifolds via top-view camera imaging.
This measurement technique allows the rapid acquisition of hundreds of precise
transmission measurements. We demonstrate manifolds with uniform and Gaussian
power distribution patterns with mean power output errors (averaged over 10
sets of 10 inputs) of 0.7 and 0.9 dB, respectively, establishing this as a
viable architecture for precision light distribution on-chip. We also assess
the performance of the passive photonic elements comprising the system via
self-referenced test structures, including high-dynamic-range beam taps,
waveguide cutback structures, and waveguide crossing arrays.

23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio