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Introduction
‣
Circuit Capabilities
‣
PICWave vs Harold
Features
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PICWave Circuit Capabilities
The simulation of a photonic circuit includes two stages:
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Creating models of the individual circuit components
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Importing the individual component models into a standard circuit model format, connecting the components together and simulating the resulting circuit.
PICWave is primarily focussed on Stage 2, but also has the capability of modelling many components itself;
in particular it has an extensive modelling capability of semiconductor gain sections
(SOAs).
PICWave has a
building block system allowing you to create your own libraries of pre-made components, or use
design kits provided by a third
party; we currently supply InP-based design kit libraries for
Smart Photonics and
FhG Heinrich Hertz Institut fabs. Others coming soon. Please ask.
The table below describes PICWave's capabilities
in terms of circuit, component and material modelling, and its
reliance on external models (such as FIMMPROP
and Harold).
| Component |
Comments |
PICWave Circuit Model |
Component Model |
Material Model |
Base
Module
only |
With
Active
Module |
| Passive Waveguides |
|
 |
|
PICWave Mode Solver |
See (1) |
| DBR Gratings |
Low delta-n gratings |
 |
|
PICWave Kappa Calculator |
See (1) |
| Other Passive Components |
Anything with an
S-matrix (with optional wavelength dependence) |
|
|
FIMMPROP
or any EM solver |
See (1) |
| Semiconductor Optical
Amplifiers (SOAs) |
Building block for any laser diode |
|
|
PICWave |
Harold,
gain table
or built-in examples(2) |
| Modulators / QCSE |
Electro-refractive and absorptive |
|
|
Harold |
Harold
or lab data |
| Modulators / Silicon |
Bulk free-carrier interactions |
(2) |
|
External model or lab data |
|
| Other modulators |
Simple modulator, electro-refractive and absorptive modulators |
(2) |
|
External model or lab data |
|
| Photodiodes |
Waveguide QW photodiode |
(2) |
|
PICWave |
Harold
or gain table |
| Electric R, L, C |
|
|
|
PICWave |
N/A |
| Non-linear waveguides including periodic |
Model effects due to χ(2) nonlinearities in dielectric media, including SHG in periodically poled crystalline materials |
|
|
PICWave |
Lab data
for χ(3) |
1 Dispersion data for
common materials supplied – Si, SiGe, SiO2, GaAs, AlGaAs, InGaAsP,
InGaAlAs, LiNbO3, BCB, Al, Au, Ag, Ni, W.
2 Examples relying on material/gain data
from Harold are supplied for typical InGaAsP, InGaAlAs and AlGaAs epi’s.
3 Component dynamics, e.g. escape time effects, available only with Active Module.
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