The button includes options to open the object library with a few preset categories. Components are more complicated structures that are built from one or several primitives. Common parameters are available to be adjusted. These pre-built Structure groups enable users to quickly setup common (but often difficult to construct), simulation environments.
The preset categories are:
Polygons allow the user to define a custom object with a variable number of vertices. The location of each vertex can be independently positioned within a plane, and the vertices are connected with straight lines. These shapes are extruded in the z dimension.
This category includes various shapes of waveguide paths. For 3D simulations, the sidewalls can be vertical or angled.
Photonic crystals are optical nanostructures that are either rectangular or hexagonal periodic. This category includes PC waveguides and PC cavities.
Gratings are a regularly spaced set of elements which can have polarizing, reflecting, or coupling effects.
This category contains examples of surface objects defined by equations.
There are many more categories of components available that are constantly being updated.