Circular Bends

bend_circular_factory(kcl) produces constant-radius arc bends. Unlike euler bends, kf.routing.optical.get_radius returns exactly the nominal radius. Arguments width and radius are in µm.

import kfactory as kf
from kfactory.factories.circular import bend_circular_factory


class LAYER(kf.LayerInfos):
    WG: kf.kdb.LayerInfo = kf.kdb.LayerInfo(1, 0)


pdk = kf.KCLayout("FACTORIES_CIRCULAR_DEMO", infos=LAYER)
L = LAYER()

bend_circ = bend_circular_factory(pdk)

bc90 = bend_circ(width=0.5, radius=10.0, layer=L.WG)
print("circular bend:", bc90.name)
print("footprint radius:", kf.routing.optical.get_radius(bc90), "µm (== nominal)")
bc90

circular bend: bend_circular_W0p5_R10_LWG_ENone_A90_AS1
footprint radius: 10000 µm (== nominal)

Circular Bends

See Also