RSoft Design Group Intros DiffractMOD

RSoft Design Group launches DiffractMOD, a design tool for diffractive optical structures

April 15, 2004

1 Min Read

OSSINING, N.Y. -- RSoft Design Group, Inc., the market leader in optical design, simulation, and optimization software, has announced today the release of DiffractMOD™, a new design tool for diffractive optical structures such as surface normal gratings, photonic bandgap crystals, and subwavelength periodic structures. It employs one of the most efficient methods to simulate electromagnetic wave diffraction from periodic structures. DiffractMOD is well-suited to a variety of photonic applications including diffractive optical elements, narrow wavelength filters, dense wavelength division multiplexers, polarization sensitive devices, optical interconnects, optical data storage, microlens arrays, and beam splitters and shapers. It can also be used in semiconductor manufacturing process for optical profilometry and nano-metrology.

DiffractMOD is based on the Rigorous Coupled Wave Analysis (RCWA) method and implements several advanced algorithms including a fast converging formulation of Maxwell equations and a numerical stabilization scheme. The RCWA method uses the concept of a unit cell to handle both 2D and 3D periodic structures and is specifically tailored for multilayer structures. The unit cell definition can have arbitrary geometry and the index distribution can consist of both standard dielectric materials and dispersive or lossy materials such as metals. The input or incident plane wave can have arbitrary direction and polarization. Various simulation results can be output including diffraction efficiency, each vectorial field component, and both near and far fields.

RSoft Design Group Inc.

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