Technical Issues - Designs on Multiple Substrates I
In the following discussion we assume that substrate surfaces are parallel and that multiple reflections between surfaces are added incoherently. Click here for a further discussion. In some cases surfaces are purposely wedged (not parallel); see Designs on Multiple Substrates II.
DESIGN 2.61.0317 added Edit...Reverse Segment to the Groups Mode design editor. This helps users combine designs onto one or more substrates. While designs can also be reversed in the Design Macro editor, it may be more simpler to do so in the Groups Mode editor.
This section reviews a technique for combining multiple designs. Both entrance medium (AIR) and exit medium (SUB) have index 1.0. Previously designed Lowpass and Highpass filters are opened in the Groups Mode macro editor as shown here. When treated as a normal one-side design, the H layer will be next to the glass substrate.
Effectively the design is deposited onto AIR and the substrate is treated as a massive layer.
The sequence for combining designs is shown below.