Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optimized 3D simulation method for modeling of out-of-plane radiation in
  silicon photonic integrated circuits   We present an accurate and fast 3D simulation scheme for out-of-plane grating
couplers, based on two dimensional rigorous (finite difference time domain)
grating simulations, the effective index method (EIM), and the
Rayleigh-Sommerfeld diffraction formula. In comparison with full 3D FDTD
simulations, the rms difference in electric field is below 5% and the
difference in power flux is below 3%. A grating coupler for coupling from a
silicon-on-insulator photonic integrated circuit to an optical fiber positioned
0.1 mm above the circuit is designed as example.

35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat