The table below compares the active component
(laser diode, SOA, modulators etc.) modelling capabilities of PICWave,
Harold,
Harold XY and
Harold QCSE.
| Structure
Capability |
PICWave |
Harold |
Harold XY |
Harold QCSE |
| Longitudinal Structure |
| Fabry-Perot laser |
 |
|
|
|
| DFB & DBR laser |
|
|
|
|
| Tuneable laser structures (multi-contact) |
|
|
|
|
| Model thermal diffusion along device (e.g. for facet heating in high power lasers) |
|
|
|
|
| SOA operation |
|
|
|
|
| Modulator operation |
|
|
|
|
| Vertical Structure |
| Take account of vertical mode confinement by epitaxy layer structure |
|
|
|
|
| Take account of carrier capture by quantum wells |
|
|
|
|
| Model self-consistent carrier drift-diffusion equations |
|
|
|
|
| Calculate gain spectra as a function of injected current |
|
|
|
|
| Calculate emission spectra as a function of injected current |
|
|
|
|
| Rigorous modelling of heat
sources and heat flow |
|
|
|
|
| Calculate absorption spectra as a function of reverse bias voltage (QCSE) |
|
|
|
|
| Lateral Structure / 2D (XY) |
| Take account of lateral diffusion |
|
|
|
|
| Take account of lateral waveguide effects |
|
|
|
|
| Take account of lateral current spreading/leakage |
|
|
|
|
| Model self-consistent 2D
(XY) carrier drift-diffusion |
|
|
|
|
| Rigorous modelling of 2D
(XY) heat flow |
|
|
|
|
| Results Produced |
| I-V curves |
|
|
|
|
| Light-current curves |
|
|
|
|
| Gain spectra |
|
|
|
|
| Optical spectra |
|
|
|
|
| Large Signal Dynamics |
|
|
|
|
| Linewidth |
|
|
|
|
| RIN Spectra |
|
|
|
|
| Eye-diagrams |
|
|
|
|
| Simulation of mode-locking and gain switching |
|
|
|
|
| Absorption spectra vs. reverse voltage (QCSE) |
|
|
|
|
| Refractive spectra vs. reverse voltage (QCSE) |
|
|
|
|
