Photon Design provides a wide variety of photonics modeling software for integrated and fiber-based component design, including: Fimmprop bidirectional optical propagation toolFimmwave 3-D mode solverCrystalWave photonic crystal simulatorOmniSim general-purpose 3-D FDTD (three-dimensional finite difference time domain) simulator Cladiss-2D laser-diode/TWA ("traveling-wave" amplifier)