These are fully etched strip waveguides, like a dielectric wire
||Wire-like waveguide definition, with a core and a cladding.|
The following transition can be used to make transition between two wire waveguides:
||A transition between two WireWaveguideTemplates.|
||A linear transition between two WireWaveguideTemplates.|
You can also use the more generic class
ipkiss3.pcell.photonics.transitions.linear.LinearWindowWaveguideTransition for the same purpose. WireWaveguideTransitionLinear adds the restriction such that only the correct waveguide templates can be used (WireWaveguideTemplates).