Gratingmod

GratingMOD GratingMOD is a general design tool for analyzing and synthesizing complicated grating profiles in optical fibers and integrated waveguide circuits for a wide variety of photonic applications. The software is based on the Coupled Mode Theory (CMT) algorithm for fast simulation as well as sophisticated multiple mode algorithms for advanced applications. GratingMOD also provides a general platform for simulation of various coupling mechanisms. Features Bragg condition searching to find both the period farom the specified modes and the modes from a specified periodSophisticated orthogonality relations for both Iossless and Iossy waveguide are includedOptimal modes are used to reduce errorAnalytical mode calculations can be used when applicableAn arbitrary number of gratings at arbitrary positions in both 2D and 3D structures can be used to study coupling mechanisms.Coupling mechanism includes fiber core coupling, fiber core to cladding coupling, long period fibers, as well as side coupling and vertical coupling for integrated circuitsMulti-mode grating systems can be analyzed via a multi-mode CMT implementationAn advanced synthesis tool utilizes a state-of-the-art synthesis technique to solve the inverse problemBoth waveguide and material dispersion can be includedTransmitted and reflected spectra for each mode can be determinedCalculation of phase, dispersion, and time delayGeneration of mode, apodization, chirp, and grating profilesAutomated calculation of band width for primary order reflectionSpectrum analysis and Bragg condition analysis