Merge pull request #22 from gdsfactory/simpler_routing

simplify routing

cspdk/__init__.py

@@ -6,8 +6,7 @@
 from cspdk.cells import _bend, _straight, _taper
 from cspdk.config import PATH
 from cspdk.models import get_models
-from cspdk.routing import get_routing_strategies
-from cspdk.tech import LAYER, LAYER_STACK, LAYER_VIEWS
+from cspdk.tech import LAYER, LAYER_STACK, LAYER_VIEWS, routing_strategies
 
 _models = get_models()
 _cells = get_cells(cells)
@@ -19,7 +18,6 @@
     }
 )
 _cross_sections = get_cross_sections(tech)
-_routing_strategies = get_routing_strategies()
 PDK = Pdk(
     name="cornerstone",
     cells=_cells,
@@ -28,7 +26,7 @@
     layer_stack=LAYER_STACK,
     layer_views=LAYER_VIEWS,
     models=_models,
-    routing_strategies=_routing_strategies,
+    routing_strategies=routing_strategies,
 )
 PDK.activate()
 

cspdk/cells.py

@@ -1364,6 +1364,9 @@ def crossing_sc() -> gf.Component:
     return c
 
 
+array = gf.components.array
+
+
 if __name__ == "__main__":
     # c = die_sc()
     c = crossing_sc()

cspdk/klayout/d25/Cornerstone.lyd25

@@ -18,6 +18,7 @@
  <text>
 
 core = input(3, 0)
+slab = input(5, 0)
 nitride = input(203, 0)
 nitride_etch = input(204, 0)
 heater = input(39, 0)
@@ -26,6 +27,7 @@ metal = input(41, 0)
 
 
 z(core, zstart: 0.0, zstop: 0.2, name: 'core: si 3/0', )
+z(slab, zstart: 0.0, zstop: 0.1, name: 'slab: si 5/0', )
 z(nitride, zstart: 0.0, zstop: 0.3, name: 'nitride: sin 203/0', )
 z(nitride_etch, zstart: 0.0, zstop: 0.3, name: 'nitride_etch: sin 204/0', )
 z(heater, zstart: 1.1, zstop: 1.8, name: 'heater: TiN 39/0', )

cspdk/samples/circuit_simulations.py

@@ -6,7 +6,7 @@
 from cspdk import PDK
 
 if __name__ == "__main__":
-    c = cspdk.cells.mzi_sc(delta_length=100)
+    c = cspdk.cells.mzi_sc(delta_length=10)
     c.show()
     c.plot_netlist()
     netlist = c.get_netlist()

cspdk/samples/circuit_simulations_with_routing.py

@@ -0,0 +1,32 @@
+import gdsfactory as gf
+import jax.numpy as jnp
+import matplotlib.pyplot as plt
+import sax
+
+import cspdk
+from cspdk import PDK
+
+if __name__ == "__main__":
+    c = gf.Component()
+    mzi1 = c << cspdk.cells.mzi_sc(delta_length=10)
+    mzi2 = c << cspdk.cells.mzi_sc(delta_length=100)
+    mzi2.move((200, 200))
+    route = cspdk.tech.get_route_sc(mzi1.ports["o2"], mzi2.ports["o1"])
+    c.add(route.references)
+    c.add_port(name="o1", port=mzi1.ports["o1"])
+    c.add_port(name="o2", port=mzi2.ports["o2"])
+    c.show()
+    c.plot_netlist_flat()
+    netlist = c.get_netlist_recursive()
+    models = PDK.models
+    circuit, _ = sax.circuit(netlist, models=models)  # type: ignore
+    wl = jnp.linspace(1.5, 1.6, 256)
+
+    S = circuit(wl=wl)
+    plt.figure(figsize=(14, 4))
+    plt.title("MZI")
+    plt.plot(1e3 * wl, jnp.abs(S["o1", "o2"]) ** 2)  # type: ignore
+    plt.xlabel("λ [nm]")
+    plt.ylabel("T")
+    plt.grid(True)
+    plt.show()

cspdk/samples/get_route.py

@@ -0,0 +1,18 @@
+"""`get_route` returns a Manhattan route between two ports. """
+
+import gdsfactory as gf
+
+import cspdk
+
+if __name__ == "__main__":
+    c = gf.Component("sample_connect")
+    mmi1 = c << cspdk.cells.mmi1x2_nc()
+    mmi2 = c << cspdk.cells.mmi1x2_nc()
+    mmi2.move((500, 50))
+
+    route = cspdk.tech.get_route_nc(
+        mmi1.ports["o3"],
+        mmi2.ports["o1"],
+    )
+    c.add(route.references)
+    c.show()