Many thanks to Xaveer and Ronald. In fact, where can I see all the attributes (e.g. width, radius, os, cladding width, etc) corresponding to an existing PDK?
I know I can do the followings to see all the PDK in demofab:
import nazca as nd
import nazca.demofab as demo
As what Xaveer said, it would be convenient to use an existing PDK as template and implement my own technology. But, how to actually do that? Can I “import” demofab.shallow to a new xsection and start to do modification from that?
Maybe there is specific section for this in the manual. Please refer me to that.