photonforge-circuit-simulation

Run and understand PhotonForge circuit-level and time-domain simulations. Compose component S-matrices into a whole-circuit frequency response with pf.CircuitModel, or drive the circuit with real waveforms (modulator bit patterns, laser turn-on, ramps) and watch the output evolve with pf.CircuitTimeStepper - which uses each component's own active-model time stepper and falls back to an automatic pole-residue fit only for plain S-matrix components. For a standalone S-matrix (e.g. measured Touchstone) use pf.pole_residue_fit + pf.TimeDomainModel directly. Covers pf.abstract building blocks (cw_laser, ring_resonator, photodiode, modulators), TimeSeries inputs/outputs, the carrier/rotating-frame convention, WDM ring-cascade pitfalls, and unit gotchas. Use when the user simulates modulators, ring/MRM links, WDM ring cascades, eye diagrams, transients, or photodiode detection, or asks what circuit vs time-domain simulation is.