Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Compact Broadband Low-Loss Taper for Coupling to a Silicon Nitride
  Photonic Wire   We demonstrate an ultra-compact waveguide taper in Silicon Nitride platform.
The proposed taper provides a coupling-efficiency of 95% at a length of 19.5 um
in comparison to the standard linear taper of length 50 um that connects a 10
um wide waveguide to a 1 um wide photonic wire. The taper has a spectral
response > 75% spanning over 800 nm and resilience to fabrication variations;
>200 nm change in taper and end waveguide width varies transmission by <5%. We
experimentally demonstrate taper insertion loss of <0.1 dB/transition for a
taper as short as 19.5 um, and reduces the footprint of the photonic device by
50.8% compared to the standard adiabatic taper. To the best of our knowledge,
the proposed taper is the shortest waveguide taper ever reported in Silicon
Nitride.

22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg