RSoft Simulation Modules

BeamPROP

BeamPROP is a Beam Propagation Method (BPM) solver used for modeling guided wave propagation in waveguides, couplers, splitters, tapers, and multimode structures. It is best suited for long propagation devices where computational efficiency is important.

Where BeamPROP is Used?

WDM devices such as arrayed waveguide grating (AWG) routers, switches, modulators, multimode interference devices, passive 1×N and N×N splitters, laser transverse mode analysis, standard and specialty fiber design, grating-based structures, and optical sensor components.

FullWAVE

FullWAVE is a Finite-Difference Time-Domain (FDTD) solver used for high-index contrast devices, nanophotonic structures, silicon photonics, subwavelength features, and nonlinear materials. It provides accurate time-domain analysis for complex optical structures.

Where FullWAVE is Used?

Nanophotonic and high-index contrast devices including ring resonators, photonic bandgap structures, diffractive elements, cavity analysis, nano- and micro-lithography, biophotonics, LED extraction, plasmonic structures, and optical sensing applications.

BandSOLVE

BandSOLVE is Photonic Band Structure solver used for photonic crystal analysis, bandgap engineering, periodic optical structures, and Bloch mode analysis. It calculates dispersion relations and photonic band diagrams.

Where BandSOLVE is Used?

Photonic crystal analysis including 2D and 3D slab waveguides, cavity structures, photonic crystal fibers, bandgap engineering, defect mode analysis, and periodic optical material research.

ModePROP

ModePROP is an Eigenmode Expansion solver used for multimode waveguide analysis, mode coupling problems, optical transitions, and fiber-device interfaces. It is efficient for segmented structures and mode interaction studies.

Where ModePROP is Used?

Waveguide and fiber-based systems including mode coupling analysis, surface-normal grating couplers, plasmonic devices, optical sensors, filters, mode converters, and photonic bandgap structures.

DiffractMOD

DiffractMOD is a Rigorous Coupled-Wave Analysis (RCWA) solver suited for diffraction gratings, periodic structures, metasurfaces, and subwavelength gratings. It is used for detailed diffractive optics analysis.

Where DiffractMOD is Used?

Diffraction-based optical systems including diffractive optical elements (DOEs), surface and volume gratings, wavelength filters, optical metrology, nano-lithography, polarization devices, photovoltaic structures, 3D displays, and spectroscopy systems.

GratingMOD

GratingMOD is a Fiber and Bragg Grating solver specialized for fiber Bragg gratings, long-period gratings, chirped gratings, and WDM devices. It is widely used in telecom and sensing workflows.

Where GratingMOD is Used?

Fiber and Bragg grating applications including dispersion compensation, multiplexing/demultiplexing, add/drop filtering, gain equalization, grating-assisted couplers, and long-period grating sensors.

FemSIM

FemSIM is a Finite Element Method (FEM)-based Full-Vector Mode solver used for analyzing electromagnetic modes in complex photonic structures. It accurately computes transverse modes, cavity modes, guided modes, leaky modes, and radiation modes.

It supports arbitrary geometries using a non-uniform hybrid mesh with triangular and rectangular elements for high accuracy.

Best suited for:

• Nano-photonic and silicon photonic devices
• High-index contrast structures
• Complex geometries with curved or irregular profiles

Where FemSIM is Used?

Fiber and Bragg grating applications including dispersion compensation, multiplexing/demultiplexing, add/drop filtering, gain equalization, grating-assisted couplers, and long-period grating sensors.