FullWAVE是一高度整合之复杂光子组件仿真设计分析软件，它使用－有限差分时域之模拟分析方法，藉以分析一般光束传播法所无法建立模型分析的光子组件，例如光晶体与环状共振器等。

因此，RSoft公司所开发的 BeamPROP 与 FullWAVE 软体，两者实际上是具有互补之作用。其主控程序为 BeamPROP 之 CAD Layout 系统，用来设计光波导组件及光路，亦即 BeamPROP 与 FullWAVE 共享同一个 CAD Layout 程序。

FullWAVE is a highly sophisticated general design tool ideal for studying the propagation of light in a wide variety of photonic structures including integrated and fiberoptic waveguide devices and circuits and nanophotonic devices such as micro-cavity resonators and photonic crystals.

The software employs the finite-difference time-domain (FDTD) method for the fully-vectorial simulation of photonic structures. FullWAVE's award winning innovative design and features has made it the market leader amongst optical simulation tools.