Photon Design continues their pioneering advancements leading the market in quantum dot simulations. With this latest update, the results of quantum dot epitaxies simulated thoroughly in Harold can now be exported to laser diode simulator PICWave for 3D dynamic simulations. In this environment arbitrary 3D lasers can be designed and integrated into larger photonic integrated circuits.

Examples could include DFB lasers created with QD epis, inspection of modulation, and building comb lasers with a full spectrum found as the output of a simulation.

Quantum dot simulations can now also run more efficiently with 1D simulation of epitaxies rather than full 2D cross sections.

Silicon Modulators
Harold’s ability to simulate carrier diffusion and accumulation can now be applied to silicon modulators, using the plasma diffusion effect to simulate effective index change of a mode due to applied voltage.

New examples available in standard examples show excellent agreement of the new model with experimental results.

We look forward to seeing these results applied across our other software like PICWave and FIMMPROP to build full MZMs, tuneable ring filters, and beam steering.

The ability to simulate silicon modulators has been made separate to Harold’s laser simulation in a new Modulator Module – those wanting to simulate silicon modulators should not have to pay for the ability to simulate lasers that they don’t need.