Diffraction grating (DGTD)

Characterize a diffraction grating in response to a broadband planewave at normal incidence. Lumerical provides a set of grating scripts for the DGTD solver, making it easy to calculate common results such as number of grating orders, diffraction angles and grating efficiencies at different wavelengths. Overview Understand the simulation workflow Więcej…

Nanobeam grating

This example demonstrates how to use the DGTD to compute the diffraction efficiency and deflection angles of a periodic grating consisting of an array of sub-wavelength silicon beams on top of a glass substrate. As explained in the referenced article, this type of grating is used to steer a beam Więcej…

Resonant bio-sensor grating

We will calculate the reflectivity of a simple dielectric grating described in Cunningham et al.  This grating is designed to create a narrow resonant reflectivity line that can be used in biosensor applications. Simulation setup The grating is made from a thin layer (120 nm) of Silicon Nitride deposited on Więcej…

Diffraction grating

This example characterizes a diffraction grating in response to a broadband planewave at normal incidence. Lumerical provides a set of grating scripts as well as “grating order transmission” analysis group, making it easy to calculate common results such as number of grating orders, diffraction angles and grating efficiencies at different Więcej…

Blazed grating

This example shows how to calculate the grating orders from a blaze grating. This grating has many grating orders at each wavelength. In order to capture the signature of the total reflection and transmission, more frequency points in the monitors are required. Simulation setup A blaze grating is shown in Więcej…