Download Optical Device Simulation Plasmonics and nanophotonics

CST STUDIO SUITE
Optical Device Simulation
Plasmonics and nanophotonics
E-field in a grating coupler.[1]. Total length is about 185 um, or roughly 1,000 wavelengths.
Optical devices are already key components in many areas, such as communications, remote sensing, or medical
applications, and their role will only increase in the future. Simulating such devices helps in optimizing their
efficiency and in reducing cost of design and development. With its powerful solvers and user-friendly interface,
CST® STUDIO SUITE® offers a unique platform for handling such challenges.
Complete Technology
CST STUDIO SUITE offers a wide range of solvers, including FIT/FDTD, FEM, MoM/BEM, ACA, MLFMM, and TLM. They can all be accessed
through the same GUI and applied to the same model – often without any changes to the model. This gives the user a unique capability to
choose the best performing algorithm for the device and to cross-check results from different solvers for verification.
CST’s flagship time domain solver is based on FIT (a generalized version of FDTD) and includes a conformal meshing scheme (PBA®,
introduced in 1998).
Graphical user interface
CST revolutionized the microwaves & RF simulation world in 1998 when it introduced its first interactive and user-friendly GUI. Its most
recent version has built on this with a modern ribbon GUI and versatile modeling tools. It provides all necessary tools for the user to build
even complex devices, or to import them from the a wide range of CAD formats. Every model can be parameterized for parameter studies and
optimization. No programming skills are necessary, but powerful macro scripting is available for those who prefer it.
[2] “ Visible wavelength silicon nitride focusing grating coupler with AlCu/TiN reflector” by Sebastian Romero-García,
Florian Merget, Frank Zhong, Hod Finkelstein, and Jeremy Witzens, Optics Letters Vol. 38, No. 14, p. 2521, July 15, 2013.
Optical
Multiphysics
Thermal losses, both wanted and unwanted, play an important role
in many optical applications. CST STUDIO SUITE includes stationary
and transient thermal solvers that take the power loss from previous
EM simulations as input. The thermal results can be fed back to the
EM simulation (e.g., to consider temperature dependent material
properties) or used as input to simulate deformation caused by thermal stress. All solvers are accessed through the same GUI and can be
applied to the same model file.
Splitter/combiner for Silicon photonic integrated circuits (PIC).
High Performance Computing (HPC)
Some optical applications require simulating electrically extremely
large structures. Typical examples include grating couplers or wave­
guide bends. This can lead to extremely long simulation times or
even make simulation on a single computer infeasible. CST offers
various high performance computing (HPC) options: GPU computing provides a considerable speedup and MPI allows large cluster
simulations using billions of mesh cells.
Even models that run reasonably fast on a single machine can benefit
from HPC options: Distributed Computing (DC) allows to run multiple parameter combinations in parallel on multiple machines, which
can speed up parameter studies and optimizations considerably.
All options can be combined to maximize performance.
A system of plasmonic nano antennas. [2]
“In my group we frequently use CST for our studies on optical metamaterials and
plasmonics, and we love it for its user friendliness, the simulation accuracy, and the
flexibility in modeling complex problems.”
A. Alù, Associate Professor, University of Texas at Austin
[2] “Giant birefringence in optical antenna arrays with widely tailorable optical anisotropy” by M. A. Kats, P. Genevet, G. Aoust, N. Yu,
R. Blanchard, F. Aieta, Z. Gaburro, and F. Capasso, arXiv:1206.6792.
www.cst.com
Multiphysics simulation of a photonic crystal [3] in CST STUDIO SUITE
1) Electromagnetic simulation.
The FEM-based Frequency Do­
main Solver calculates the fields
and losses in the structure.
2) Temperature simulation. The
fields are then used to calculate
the steady-state temperature
distribution.
3) Thermal expansion (exagge­
rated plot). The deformation
can then be imported back into
EM simulation for sensitivity
analysis.
[3] Tuning the resonance of a photonic
crystal microcavity with an AFM
probe” by I. Märki, M. Salt and H. P.
Herzig, OPTICS EXPRESS 2969 Vol. 14,
No. 3 April 2006 .
www.cst.com
Optical
CST STUDIO SUITE features
Complete Technology for EM simulation
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ƒƒ
FIT/FDTD
ƒƒ
FEM
ƒƒ
ƒƒ
TLM
Optical switch employing the non-linear behavior of a Si waveguide.
The output is switched by locally applying an external field to part of
the waveguide, changing the refractive index in one of the straight
sections. The resulting change in phase leads to destructive interference in either the upper or the lower output channel.
MoM/BEM, MLFMM
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Multiphysics thermal and mechanical solvers
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High-performance computing (HPC) support
ƒƒ
GPU acceleration
ƒƒ
Distributed computing
ƒƒ
MPI cluster computing
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ABOUT
CST tools
CAD import/export
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Automatic parameter sweep and optimization tools
Founded in 1992, CST offers the market’s widest range
CST STUDIO SUITE is the culmination of many years of
Solver hybridization through System Assembly and Modeling
of 3D electromagnetic field simulation tools through
research and development into the most accurate and
(SAM)
a global network of sales and support staff and repreefficient computational solutions for electromagnetic
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User-friendly interface
sentatives.
CST develops CST STUDIO SUITE, a package
designs. From static to optical, and from the nanoscale
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Comprehensive
post-processing
library
of
high-performance
software
for the simulation of
to the electrically large, CST STUDIO SUITE includes tools
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Full
3D
field
visualization
electromagnetic fields in all frequency bands, and also
for the design, simulation and optimization of a wide
Toroidal
Field results
for a whispering
gallery mode
in a toroidal
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Automation
with VBAcomplementary
and MATLAB
sells
and supports
third-party products.
range resonator:
of devices.
Analysis
is not limited
to pure
EM, resonator.
but
Its success is based on a combination of leading edge
can also include thermal and mechanical effects and
technology, a user-friendly interface and knowledgecircuit simulation. CST STUDIO SUITE can offer consiable support staff. CST’s customers are market leaders
derable product to market advantages such as shorter
in
industries
as
diverse
as
telecommunications,
defense,
development
cycles,thanks
virtual prototyping before physical
“CST STUDIO SUITE is a great tool for plasmonics and nanophotonics
research,
automotive, electronics and healthcare. Today, the
trials, and optimization instead of experimentation.
to a combination of a user-friendly interface and many advanced simulation modules.”
company enjoys a leading position in the high-frequency
P. G. Kik,
Professor
of Optics
CREOL, University
of Central
3D Associate
EM simulation
market
andatemploys
280 sales,
deve- Florida
Further information about CST is available on the web at
lopment, and support personnel around the world.
www.cst.com
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Trademarks
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