Multi - KCLayout / PDK¶

You can also use multiple KCLayout objects as PDKs or Libraries of KCells and parametric KCell-Functions

Use multiple KCLayout objects as PDKs/Libraries¶

KCLayouts can act as PDKs. They can be seamlessly instantiated into each other

In [1]:

from collections.abc import Sequence
import kfactory as kf

class LayerInfos(kf.LayerInfos):
    WG: kf.kdb.LayerInfo = kf.kdb.LayerInfo(1,0)
    WGEX: kf.kdb.LayerInfo = kf.kdb.LayerInfo(2,0) # WG Exclude
    CLAD: kf.kdb.LayerInfo = kf.kdb.LayerInfo(4,0) # cladding
    FLOORPLAN: kf.kdb.LayerInfo = kf.kdb.LayerInfo(10,0)

# Make the layout object aware of the new layers:
LAYER = LayerInfos()
kf.kcl.infos = LAYER

kcl_default = kf.kcl

from collections.abc import Sequence import kfactory as kf class LayerInfos(kf.LayerInfos): WG: kf.kdb.LayerInfo = kf.kdb.LayerInfo(1,0) WGEX: kf.kdb.LayerInfo = kf.kdb.LayerInfo(2,0) # WG Exclude CLAD: kf.kdb.LayerInfo = kf.kdb.LayerInfo(4,0) # cladding FLOORPLAN: kf.kdb.LayerInfo = kf.kdb.LayerInfo(10,0) # Make the layout object aware of the new layers: LAYER = LayerInfos() kf.kcl.infos = LAYER kcl_default = kf.kcl

Empty default KCLayout

In [2]:

kcl_default.kcells

kcl_default.kcells

Out[2]:

KCells(DEFAULT, n=0)

In [3]:

from typing import Any

bend90_function = kf.factories.euler.bend_euler_factory(kcl=kcl_default)
bend90 = bend90_function(width=0.500, radius=10, layer=LAYER.WG)

@kcl_default.cell
def straight(width: int, length: int) -> kf.KCell:
    c = kcl_default.kcell()
    c.shapes(LAYER.WG).insert(kf.kdb.Box(0, -width // 2, length, width // 2))
    c.create_port(
        name="o1",
        width=width,
        trans=kf.kdb.Trans(rot=2, mirrx=False, x=0, y=0),
        layer_info=LAYER.WG,
    )
    c.create_port(
        name="o2",
        width=width,
        trans=kf.kdb.Trans(x=length, y=0),
        layer_info=LAYER.WG,
    )

    return c

@kcl_default.routing_strategy
def route_bundle(
    c: kf.ProtoTKCell[Any],
    start_ports: Sequence[kf.ProtoPort[Any]],
    end_ports: Sequence[kf.ProtoPort[Any]],
    separation: int = 5000,
) -> list[kf.routing.generic.ManhattanRoute]:
    return kf.routing.optical.route_bundle(
        c=kf.KCell(base=c.base),
        start_ports=[kf.Port(base=sp.base) for sp in start_ports],
        end_ports=[kf.Port(base=ep.base) for ep in end_ports],
        separation=separation,
        straight_factory=straight,
        bend90_cell=bend90,
    )


@kcl_default.schematic_cell(output_type=kf.KCell)
def my_schema() -> kf.schema.Schema:
    schema = kf.Schema(kcl=kcl_default)

    s1 = schema.create_inst(
        name="s1", component="straight", settings={"length": 5000, "width": 500}
    )
    s2 = schema.create_inst(
        name="s2", component="straight", settings={"length": 5000, "width": 500}
    )

    s1.place(x=1000, y=10_000)
    s2.place(x=1000, y=100_000)

    schema.add_route(
        "s1-s2", [s1["o2"]], [s2["o2"]], "route_bundle", separation=20_000
    )

    return schema

kcell = my_schema()

kcell

from typing import Any bend90_function = kf.factories.euler.bend_euler_factory(kcl=kcl_default) bend90 = bend90_function(width=0.500, radius=10, layer=LAYER.WG) @kcl_default.cell def straight(width: int, length: int) -> kf.KCell: c = kcl_default.kcell() c.shapes(LAYER.WG).insert(kf.kdb.Box(0, -width // 2, length, width // 2)) c.create_port( name="o1", width=width, trans=kf.kdb.Trans(rot=2, mirrx=False, x=0, y=0), layer_info=LAYER.WG, ) c.create_port( name="o2", width=width, trans=kf.kdb.Trans(x=length, y=0), layer_info=LAYER.WG, ) return c @kcl_default.routing_strategy def route_bundle( c: kf.ProtoTKCell[Any], start_ports: Sequence[kf.ProtoPort[Any]], end_ports: Sequence[kf.ProtoPort[Any]], separation: int = 5000, ) -> list[kf.routing.generic.ManhattanRoute]: return kf.routing.optical.route_bundle( c=kf.KCell(base=c.base), start_ports=[kf.Port(base=sp.base) for sp in start_ports], end_ports=[kf.Port(base=ep.base) for ep in end_ports], separation=separation, straight_factory=straight, bend90_cell=bend90, ) @kcl_default.schematic_cell(output_type=kf.KCell) def my_schema() -> kf.schema.Schema: schema = kf.Schema(kcl=kcl_default) s1 = schema.create_inst( name="s1", component="straight", settings={"length": 5000, "width": 500} ) s2 = schema.create_inst( name="s2", component="straight", settings={"length": 5000, "width": 500} ) s1.place(x=1000, y=10_000) s2.place(x=1000, y=100_000) schema.add_route( "s1-s2", [s1["o2"]], [s2["o2"]], "route_bundle", separation=20_000 ) return schema kcell = my_schema() kcell

In [4]:

# There is now a a KCell in the KCLayout
kcl_default.kcells

# There is now a a KCell in the KCLayout kcl_default.kcells

Out[4]:

KCells(DEFAULT, n=5)