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A photonic IC, laser diode and SOA simulator

Active Component Modelling Capability

Comparison of modelling capabilities of Harold, Harold XY, Harold QCSE and PICWave

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)       +