OptiBPM is a computer-aided design software tool enabling design of complex optical waveguides, which perform guiding, coupling, switching, splitting, multiplexing, and demultiplexing of optical signals in photonic devices. OptiBPM is based on the Beam Propagation Method (BPM) of simulating the passage of light through any waveguide medium, both isotropic and anisotropic. With OptiBPM you can observe the near field distribution and examine the radiation and guided field, simultaneously. OptiBPM can improve a design engineer’s productivity, reduce risk, and lower overall costs related to design of waveguide devices.