FIMMPROP offers two complementary approaches (RCMT and EME) for modelling optical gratings and periodic structures such as Bragg gratings, polarisation rotators or even twisted fibre couplers. FIMMPROP's approach is particularly powerful when modelling long gratings, where FDTD or finite-element methods would be highly inefficient.

Examples:

• Surface Grating
• SOI SG-DBR Grating
• Fiber Bragg Gratings
• Broadband Coupler
• Grating-Assisted
• Laser Cavity Modes

OmniSim can be used to model a variety of optical grating structures thanks to its various Maxwell solvers: FETD, FDTD, RCWA and FEFD.

Examples:

• Directional coupler
• Gratings with RCWA
• Diffraction Grating
• Surface Grating Coupler

OmniSim's Surface Grating Coupler Design Utility allows you to design and optimise surface grating couplers (chip to fiber couplers) automatically, in both 2D and 3D. You can also use FIMMPROP to model design and simulate surface grating couplers in 2D.

Examples:

• Surface Grating Utility
• Surface Grating

Provide PICWave with the Kappa coefficients for your grating to include complex apodised and chirped gratings (including DBRs and FBGs) into your circuit or laser diode model.

Examples:

• Disp compensating FBG
• SG-DBR tuneable laser

FIMMPROP's unique combination of EME and PWE algorithms can be used to model the effect of AR coatings and thin film filters on the actual modes of the adjacent waveguides.

Examples:

• Anti-reflection coating

EPIPPROP is the ultimate tool for all of your W/DWM needs.

Examples:

• AWGs
• Echelle Gratings