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Description
Vpi photonics analyzer 11.3
VPIcomponentMaker™ Photonic Circuits is developed with the goal to enable convenient, accurate and fast EDA-style design flow for elaborating modern and next generation photonic integrated circuits (PICs).
Such PICs are large-scale and heterogeneous, consisting of hundreds (many thousands in a few years) of passive photonic, active optoelectronic, and electronic elements. For their modeling, VPIcomponentMaker Photonic Circuits supports scalable heterogeneous circuit-level simulation framework: time- and frequency-domain simulation domains are seamlessly merged and can, therefore, be combined within the same modeled circuit.
In particular, all passive subcircuits are numerically accurately modeled in frequency domain employing the cascaded scattering matrix (S-matrix) approach, while time-domain simulations are used for only modeling interfaces between passive subcircuits and active devices.
This approach greatly reduces the overall simulation inaccuracies inherent to any time-domain simulations, and thus enables fast and accurate simulations of large-scale photonic integrated circuits with thousands of dispersive components (in contrast to purely time-domain approaches which allow simulations of photonic circuits with only a few tens of nonidealized components).
This approach also enables modeling multiscale integrated circuits with lengths of photonic components ranging from a few microns to several centimeters on the same chip. Importantly, our time-domain implementation of bidirectional connections between passive subcircuits and active devices does not introduce (if properly used) single-time-step numerical delays.