From fc97d06119beb9789d914a994c7df331e5bd4de9 Mon Sep 17 00:00:00 2001
From: Joaquin Matres <4514346+joamatab@users.noreply.github.com>
Date: Tue, 16 Apr 2024 20:13:11 -0700
Subject: [PATCH 1/3] simplify routing

---
 cspdk/__init__.py                            |   6 +-
 cspdk/cells.py                               |   3 +
 cspdk/routing.py                             |  86 --------
 cspdk/samples/get_route.py                   |  18 ++
 cspdk/tech.py                                |  53 +++++
 tests/gds_ref/array.gds                      | Bin 0 -> 272 bytes
 tests/test_netlists/test_netlists_array_.yml | 197 +++++++++++++++++++
 tests/test_pdk/test_settings_array_.yml      |  22 +++
 8 files changed, 295 insertions(+), 90 deletions(-)
 delete mode 100644 cspdk/routing.py
 create mode 100644 cspdk/samples/get_route.py
 create mode 100644 tests/gds_ref/array.gds
 create mode 100644 tests/test_netlists/test_netlists_array_.yml
 create mode 100644 tests/test_pdk/test_settings_array_.yml

diff --git a/cspdk/__init__.py b/cspdk/__init__.py
index a9f96ff..4ee87eb 100644
--- a/cspdk/__init__.py
+++ b/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()
 
diff --git a/cspdk/cells.py b/cspdk/cells.py
index 8455b06..0dc47b7 100644
--- a/cspdk/cells.py
+++ b/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()
diff --git a/cspdk/routing.py b/cspdk/routing.py
deleted file mode 100644
index 09ac61a..0000000
--- a/cspdk/routing.py
+++ /dev/null
@@ -1,86 +0,0 @@
-from functools import partial
-
-from gdsfactory.routing import get_route
-from gdsfactory.routing.factories import routing_strategy
-
-from cspdk import cells
-from cspdk.cells import _bend, _straight, _taper, wire_corner
-
-
-def get_routing_strategies():
-    return {
-        **get_routing_strategies_for_cross_section(""),
-        **get_routing_strategies_for_cross_section("xs_sc"),
-        **get_routing_strategies_for_cross_section("xs_so"),
-        **get_routing_strategies_for_cross_section("xs_rc"),
-        **get_routing_strategies_for_cross_section("xs_ro"),
-        **get_routing_strategies_for_cross_section("xs_nc"),
-        **get_routing_strategies_for_cross_section("xs_no"),
-    }
-
-
-def get_routing_strategies_for_cross_section(cross_section):
-    suffix = ""
-    if "_" in cross_section:
-        suffix = f"_{cross_section.split('_')[-1]}"
-    else:
-        cross_section = "xs_sc"
-    straight = getattr(cells, f"straight{suffix}", _straight)
-    bend = getattr(cells, f"bend{suffix}", _bend)
-    taper = getattr(cells, f"taper{suffix}", _taper)
-    return {
-        f"get_bundle{suffix}": partial(
-            routing_strategy["get_bundle"],
-            straight=straight,
-            bend=bend,
-            cross_section=cross_section,
-        ),
-        f"get_bundle_electrical{suffix}": partial(
-            routing_strategy["get_bundle_electrical"],
-            straight=straight,
-            bend=wire_corner,
-            cross_section=cross_section,
-        ),
-        f"get_bundle_path_length_match{suffix}": partial(
-            routing_strategy["get_bundle_path_length_match"],
-            straight=straight,
-            bend=bend,
-            taper=taper,
-            cross_section=cross_section,
-        ),
-        f"get_bundle_same_axis_no_grouping{suffix}": partial(
-            routing_strategy["get_bundle_same_axis_no_grouping"],
-            taper=taper,
-            route_filter=partial(
-                get_route,
-                bend=bend,
-                straight=straight,
-            ),
-            cross_section=cross_section,
-        ),
-        f"get_bundle_from_waypoints{suffix}": partial(
-            routing_strategy["get_bundle_from_waypoints"],
-            straight=straight,
-            taper=taper,
-            bend=bend,
-            cross_section=cross_section,
-        ),
-        f"get_bundle_from_steps{suffix}": partial(
-            routing_strategy["get_bundle_from_steps"],
-            straight=straight,
-            taper=taper,
-            bend=bend,
-            cross_section=cross_section,
-        ),
-        f"get_bundle_from_steps_electrical{suffix}": partial(
-            routing_strategy["get_bundle_from_steps_electrical"],
-            straight=straight,
-            taper=taper,
-            bend=wire_corner,
-            cross_section=cross_section,
-        ),
-    }
-
-
-if __name__ == "__main__":
-    print(get_routing_strategies()["get_bundle"])
diff --git a/cspdk/samples/get_route.py b/cspdk/samples/get_route.py
new file mode 100644
index 0000000..0473a92
--- /dev/null
+++ b/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()
diff --git a/cspdk/tech.py b/cspdk/tech.py
index 23bd4be..9f419aa 100644
--- a/cspdk/tech.py
+++ b/cspdk/tech.py
@@ -178,6 +178,59 @@ def get_layer_stack(
 
 cross_sections = get_cross_sections(sys.modules[__name__])
 
+############################
+# Routing functions
+############################
+
+_settings_sc = dict(
+    straight="straight_sc", cross_section=xs_sc, bend="bend_sc", taper="taper_sc"
+)
+_settings_so = dict(
+    straight="straight_so", cross_section=xs_so, bend="bend_so", taper="taper_so"
+)
+_settings_rc = dict(
+    straight="straight_rc", cross_section=xs_rc, bend="bend_rc", taper="taper_rc"
+)
+_settings_ro = dict(
+    straight="straight_ro", cross_section=xs_ro, bend="bend_ro", taper="taper_ro"
+)
+_settings_nc = dict(
+    straight="straight_nc", cross_section=xs_nc, bend="bend_nc", taper="taper_nc"
+)
+_settings_no = dict(
+    straight="straight_no", cross_section=xs_no, bend="bend_no", taper="taper_no"
+)
+
+
+get_route_sc = partial(gf.routing.get_route, **_settings_sc)
+get_route_so = partial(gf.routing.get_route, **_settings_so)
+get_route_rc = partial(gf.routing.get_route, **_settings_rc)
+get_route_ro = partial(gf.routing.get_route, **_settings_ro)
+get_route_nc = partial(gf.routing.get_route, **_settings_nc)
+get_route_no = partial(gf.routing.get_route, **_settings_no)
+
+get_bundle_sc = partial(gf.routing.get_bundle, **_settings_sc)
+get_bundle_so = partial(gf.routing.get_bundle, **_settings_so)
+get_bundle_rc = partial(gf.routing.get_bundle, **_settings_rc)
+get_bundle_ro = partial(gf.routing.get_bundle, **_settings_ro)
+get_bundle_nc = partial(gf.routing.get_bundle, **_settings_nc)
+get_bundle_no = partial(gf.routing.get_bundle, **_settings_no)
+
+
+routing_strategies = dict(
+    get_route_sc=get_route_sc,
+    get_route_so=get_route_so,
+    get_route_rc=get_route_rc,
+    get_route_ro=get_route_ro,
+    get_route_nc=get_route_nc,
+    get_route_no=get_route_no,
+    get_bundle_sc=get_bundle_sc,
+    get_bundle_so=get_bundle_so,
+    get_bundle_rc=get_bundle_rc,
+    get_bundle_ro=get_bundle_ro,
+    get_bundle_nc=get_bundle_nc,
+)
+
 
 if __name__ == "__main__":
     from gdsfactory.technology.klayout_tech import KLayoutTechnology
diff --git a/tests/gds_ref/array.gds b/tests/gds_ref/array.gds
new file mode 100644
index 0000000000000000000000000000000000000000..fb52ed841793d69fa31e55ac38242f105ba1a210
GIT binary patch
literal 272
zcmZQzV_;&6V31*CVt>rQ#URPR&Y;4efXrs#VPeb4Oe#t&s$^ggVP>^+>@@d2w)}&o
z%MSeov!g;7WLR<Q<zr(jNKA=OEGkL_>Sp0)VBin}i2!L~CI&VJMg|!HW(FAG-Ms+D
zWMK0Az`!C1)Wgnz*9H!-4M24q3=C|%ObnU~Y<x^WQ*;EF|Npny0K*InhXar?OdLeR
J?O|bI003+IGf)5k

literal 0
HcmV?d00001

diff --git a/tests/test_netlists/test_netlists_array_.yml b/tests/test_netlists/test_netlists_array_.yml
new file mode 100644
index 0000000..6d301e6
--- /dev/null
+++ b/tests/test_netlists/test_netlists_array_.yml
@@ -0,0 +1,197 @@
+connections: {}
+instances:
+  pad_1__1_1:
+    component: pad
+    info:
+      layer:
+      - 41
+      - 0
+      size:
+      - 100.0
+      - 100.0
+      xsize: 100.0
+      ysize: 100.0
+    settings:
+      bbox_layers: null
+      bbox_offsets: null
+      layer:
+      - 41
+      - 0
+      port_inclusion: 0.0
+      port_orientation: null
+      size:
+      - 100.0
+      - 100.0
+  pad_1__1_2:
+    component: pad
+    info:
+      layer:
+      - 41
+      - 0
+      size:
+      - 100.0
+      - 100.0
+      xsize: 100.0
+      ysize: 100.0
+    settings:
+      bbox_layers: null
+      bbox_offsets: null
+      layer:
+      - 41
+      - 0
+      port_inclusion: 0.0
+      port_orientation: null
+      size:
+      - 100.0
+      - 100.0
+  pad_1__1_3:
+    component: pad
+    info:
+      layer:
+      - 41
+      - 0
+      size:
+      - 100.0
+      - 100.0
+      xsize: 100.0
+      ysize: 100.0
+    settings:
+      bbox_layers: null
+      bbox_offsets: null
+      layer:
+      - 41
+      - 0
+      port_inclusion: 0.0
+      port_orientation: null
+      size:
+      - 100.0
+      - 100.0
+  pad_1__1_4:
+    component: pad
+    info:
+      layer:
+      - 41
+      - 0
+      size:
+      - 100.0
+      - 100.0
+      xsize: 100.0
+      ysize: 100.0
+    settings:
+      bbox_layers: null
+      bbox_offsets: null
+      layer:
+      - 41
+      - 0
+      port_inclusion: 0.0
+      port_orientation: null
+      size:
+      - 100.0
+      - 100.0
+  pad_1__1_5:
+    component: pad
+    info:
+      layer:
+      - 41
+      - 0
+      size:
+      - 100.0
+      - 100.0
+      xsize: 100.0
+      ysize: 100.0
+    settings:
+      bbox_layers: null
+      bbox_offsets: null
+      layer:
+      - 41
+      - 0
+      port_inclusion: 0.0
+      port_orientation: null
+      size:
+      - 100.0
+      - 100.0
+  pad_1__1_6:
+    component: pad
+    info:
+      layer:
+      - 41
+      - 0
+      size:
+      - 100.0
+      - 100.0
+      xsize: 100.0
+      ysize: 100.0
+    settings:
+      bbox_layers: null
+      bbox_offsets: null
+      layer:
+      - 41
+      - 0
+      port_inclusion: 0.0
+      port_orientation: null
+      size:
+      - 100.0
+      - 100.0
+name: pad_array
+placements:
+  pad_1__1_1:
+    mirror: 0
+    rotation: 0
+    x: 0.0
+    y: 0.0
+  pad_1__1_2:
+    mirror: 0
+    rotation: 0
+    x: 150.0
+    y: 0.0
+  pad_1__1_3:
+    mirror: 0
+    rotation: 0
+    x: 300.0
+    y: 0.0
+  pad_1__1_4:
+    mirror: 0
+    rotation: 0
+    x: 450.0
+    y: 0.0
+  pad_1__1_5:
+    mirror: 0
+    rotation: 0
+    x: 600.0
+    y: 0.0
+  pad_1__1_6:
+    mirror: 0
+    rotation: 0
+    x: 750.0
+    y: 0.0
+ports:
+  e1_1_1: pad_1__1_1,e1
+  e1_1_2: pad_1__1_2,e1
+  e1_1_3: pad_1__1_3,e1
+  e1_1_4: pad_1__1_4,e1
+  e1_1_5: pad_1__1_5,e1
+  e1_1_6: pad_1__1_6,e1
+  e2_1_1: pad_1__1_1,e2
+  e2_1_2: pad_1__1_2,e2
+  e2_1_3: pad_1__1_3,e2
+  e2_1_4: pad_1__1_4,e2
+  e2_1_5: pad_1__1_5,e2
+  e2_1_6: pad_1__1_6,e2
+  e3_1_1: pad_1__1_1,e3
+  e3_1_2: pad_1__1_2,e3
+  e3_1_3: pad_1__1_3,e3
+  e3_1_4: pad_1__1_4,e3
+  e3_1_5: pad_1__1_5,e3
+  e3_1_6: pad_1__1_6,e3
+  e4_1_1: pad_1__1_1,e4
+  e4_1_2: pad_1__1_2,e4
+  e4_1_3: pad_1__1_3,e4
+  e4_1_4: pad_1__1_4,e4
+  e4_1_5: pad_1__1_5,e4
+  e4_1_6: pad_1__1_6,e4
+  pad_1_1: pad_1__1_1,pad
+  pad_1_2: pad_1__1_2,pad
+  pad_1_3: pad_1__1_3,pad
+  pad_1_4: pad_1__1_4,pad
+  pad_1_5: pad_1__1_5,pad
+  pad_1_6: pad_1__1_6,pad
diff --git a/tests/test_pdk/test_settings_array_.yml b/tests/test_pdk/test_settings_array_.yml
new file mode 100644
index 0000000..a3682d4
--- /dev/null
+++ b/tests/test_pdk/test_settings_array_.yml
@@ -0,0 +1,22 @@
+function: array
+info:
+  layer:
+  - 41
+  - 0
+  size:
+  - 100.0
+  - 100.0
+  xsize: 100.0
+  ysize: 100.0
+module: gdsfactory.components.array_component
+name: pad_array
+settings:
+  add_ports: true
+  centered: false
+  columns: 6
+  component: pad
+  rows: 1
+  size: null
+  spacing:
+  - 150.0
+  - 150.0

From 75ff1188777ae0dd709d00de782f4957c2743bea Mon Sep 17 00:00:00 2001
From: Joaquin Matres <4514346+joamatab@users.noreply.github.com>
Date: Tue, 16 Apr 2024 20:31:18 -0700
Subject: [PATCH 2/3] add circuit_simulations_with_routing

---
 .../circuit_simulations_with_routing.py       | 32 ++++++++++
 cspdk/tech.py                                 | 64 +++++++++++++++++++
 2 files changed, 96 insertions(+)
 create mode 100644 cspdk/samples/circuit_simulations_with_routing.py

diff --git a/cspdk/samples/circuit_simulations_with_routing.py b/cspdk/samples/circuit_simulations_with_routing.py
new file mode 100644
index 0000000..6f40a05
--- /dev/null
+++ b/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()
diff --git a/cspdk/tech.py b/cspdk/tech.py
index 9f419aa..7ef3675 100644
--- a/cspdk/tech.py
+++ b/cspdk/tech.py
@@ -209,6 +209,32 @@ def get_layer_stack(
 get_route_nc = partial(gf.routing.get_route, **_settings_nc)
 get_route_no = partial(gf.routing.get_route, **_settings_no)
 
+get_route_from_steps_sc = partial(
+    gf.routing.get_route_from_steps,
+    **_settings_sc,
+)
+get_route_from_steps_so = partial(
+    gf.routing.get_route_from_steps,
+    **_settings_so,
+)
+get_route_from_steps_rc = partial(
+    gf.routing.get_route_from_steps,
+    **_settings_rc,
+)
+get_route_from_steps_ro = partial(
+    gf.routing.get_route_from_steps,
+    **_settings_ro,
+)
+get_route_from_steps_nc = partial(
+    gf.routing.get_route_from_steps,
+    **_settings_nc,
+)
+get_route_from_steps_no = partial(
+    gf.routing.get_route_from_steps,
+    **_settings_no,
+)
+
+
 get_bundle_sc = partial(gf.routing.get_bundle, **_settings_sc)
 get_bundle_so = partial(gf.routing.get_bundle, **_settings_so)
 get_bundle_rc = partial(gf.routing.get_bundle, **_settings_rc)
@@ -216,6 +242,31 @@ def get_layer_stack(
 get_bundle_nc = partial(gf.routing.get_bundle, **_settings_nc)
 get_bundle_no = partial(gf.routing.get_bundle, **_settings_no)
 
+get_bundle_from_steps_sc = partial(
+    gf.routing.get_bundle_from_steps,
+    **_settings_sc,
+)
+get_bundle_from_steps_so = partial(
+    gf.routing.get_bundle_from_steps,
+    **_settings_so,
+)
+get_bundle_from_steps_rc = partial(
+    gf.routing.get_bundle_from_steps,
+    **_settings_rc,
+)
+get_bundle_from_steps_ro = partial(
+    gf.routing.get_bundle_from_steps,
+    **_settings_ro,
+)
+get_bundle_from_steps_nc = partial(
+    gf.routing.get_bundle_from_steps,
+    **_settings_nc,
+)
+get_bundle_from_steps_no = partial(
+    gf.routing.get_bundle_from_steps,
+    **_settings_no,
+)
+
 
 routing_strategies = dict(
     get_route_sc=get_route_sc,
@@ -224,11 +275,24 @@ def get_layer_stack(
     get_route_ro=get_route_ro,
     get_route_nc=get_route_nc,
     get_route_no=get_route_no,
+    get_route_from_steps_sc=get_route_from_steps_sc,
+    get_route_from_steps_so=get_route_from_steps_so,
+    get_route_from_steps_rc=get_route_from_steps_rc,
+    get_route_from_steps_ro=get_route_from_steps_ro,
+    get_route_from_steps_nc=get_route_from_steps_nc,
+    get_route_from_steps_no=get_route_from_steps_no,
     get_bundle_sc=get_bundle_sc,
     get_bundle_so=get_bundle_so,
     get_bundle_rc=get_bundle_rc,
     get_bundle_ro=get_bundle_ro,
     get_bundle_nc=get_bundle_nc,
+    get_bundle_no=get_bundle_no,
+    get_bundle_from_steps_sc=get_bundle_from_steps_sc,
+    get_bundle_from_steps_so=get_bundle_from_steps_so,
+    get_bundle_from_steps_rc=get_bundle_from_steps_rc,
+    get_bundle_from_steps_ro=get_bundle_from_steps_ro,
+    get_bundle_from_steps_nc=get_bundle_from_steps_nc,
+    get_bundle_from_steps_no=get_bundle_from_steps_no,
 )
 
 

From baec3aaabd0bdbd746730272f1fdfcc403ab545e Mon Sep 17 00:00:00 2001
From: Joaquin Matres <4514346+joamatab@users.noreply.github.com>
Date: Fri, 19 Apr 2024 07:14:37 -0700
Subject: [PATCH 3/3] remove duplicated layers

---
 cspdk/klayout/d25/Cornerstone.lyd25  |   2 +
 cspdk/klayout/tech/layers.lyp        | 190 ---------------------------
 cspdk/samples/circuit_simulations.py |   2 +-
 cspdk/tech.py                        |   2 +-
 4 files changed, 4 insertions(+), 192 deletions(-)
 delete mode 100644 cspdk/klayout/tech/layers.lyp

diff --git a/cspdk/klayout/d25/Cornerstone.lyd25 b/cspdk/klayout/d25/Cornerstone.lyd25
index 876bfb1..6128169 100644
--- a/cspdk/klayout/d25/Cornerstone.lyd25
+++ b/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', )
diff --git a/cspdk/klayout/tech/layers.lyp b/cspdk/klayout/tech/layers.lyp
deleted file mode 100644
index 811824a..0000000
--- a/cspdk/klayout/tech/layers.lyp
+++ /dev/null
@@ -1,190 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<layer-properties>
- <properties>
-  <frame-color>#ff9d9d</frame-color>
-  <fill-color>#ff9d9d</fill-color>
-  <frame-brightness>0</frame-brightness>
-  <fill-brightness>0</fill-brightness>
-  <dither-pattern>I3</dither-pattern>
-  <line-style/>
-  <valid>true</valid>
-  <visible>true</visible>
-  <transparent>false</transparent>
-  <width>1</width>
-  <marked>false</marked>
-  <xfill>false</xfill>
-  <animation>0</animation>
-  <name>WG 3/0</name>
-  <source>3/0@1</source>
- </properties>
- <properties>
-  <frame-color>#c0c0c0</frame-color>
-  <fill-color>#c0c0c0</fill-color>
-  <frame-brightness>0</frame-brightness>
-  <fill-brightness>0</fill-brightness>
-  <dither-pattern>I3</dither-pattern>
-  <line-style/>
-  <valid>true</valid>
-  <visible>true</visible>
-  <transparent>false</transparent>
-  <width>1</width>
-  <marked>false</marked>
-  <xfill>false</xfill>
-  <animation>0</animation>
-  <name>SLAB 5/0</name>
-  <source>5/0@1</source>
- </properties>
- <properties>
-  <frame-color>#00ffff</frame-color>
-  <fill-color>#00ffff</fill-color>
-  <frame-brightness>0</frame-brightness>
-  <fill-brightness>0</fill-brightness>
-  <dither-pattern>I3</dither-pattern>
-  <line-style/>
-  <valid>true</valid>
-  <visible>true</visible>
-  <transparent>true</transparent>
-  <width>1</width>
-  <marked>false</marked>
-  <xfill>false</xfill>
-  <animation>0</animation>
-  <name>RIB 4/0</name>
-  <source>4/0@1</source>
- </properties>
- <properties>
-  <frame-color>#0000ff</frame-color>
-  <fill-color>#0000ff</fill-color>
-  <frame-brightness>0</frame-brightness>
-  <fill-brightness>0</fill-brightness>
-  <dither-pattern>I3</dither-pattern>
-  <line-style/>
-  <valid>true</valid>
-  <visible>true</visible>
-  <transparent>true</transparent>
-  <width>1</width>
-  <marked>false</marked>
-  <xfill>false</xfill>
-  <animation>0</animation>
-  <name>GRA 6/0</name>
-  <source>6/0@1</source>
- </properties>
- <properties>
-  <frame-color>#ffa500</frame-color>
-  <fill-color>#ffa500</fill-color>
-  <frame-brightness>0</frame-brightness>
-  <fill-brightness>0</fill-brightness>
-  <dither-pattern>I3</dither-pattern>
-  <line-style/>
-  <valid>true</valid>
-  <visible>true</visible>
-  <transparent>false</transparent>
-  <width/>
-  <marked>false</marked>
-  <xfill>false</xfill>
-  <animation>0</animation>
-  <name>NITRIDE 203/0</name>
-  <source>203/0@1</source>
- </properties>
- <properties>
-  <frame-color>#0000ff</frame-color>
-  <fill-color>#0000ff</fill-color>
-  <frame-brightness>0</frame-brightness>
-  <fill-brightness>0</fill-brightness>
-  <dither-pattern>I3</dither-pattern>
-  <line-style/>
-  <valid>true</valid>
-  <visible>true</visible>
-  <transparent>true</transparent>
-  <width>1</width>
-  <marked>false</marked>
-  <xfill>false</xfill>
-  <animation>0</animation>
-  <name>NITRIDE_ETCH 204/0</name>
-  <source>204/0@1</source>
- </properties>
- <properties>
-  <frame-color>#ebc634</frame-color>
-  <fill-color>#ebc634</fill-color>
-  <frame-brightness>0</frame-brightness>
-  <fill-brightness>0</fill-brightness>
-  <dither-pattern>I3</dither-pattern>
-  <line-style/>
-  <valid>true</valid>
-  <visible>true</visible>
-  <transparent>false</transparent>
-  <width/>
-  <marked>false</marked>
-  <xfill>false</xfill>
-  <animation>0</animation>
-  <name>HEATER 39/0</name>
-  <source>39/0@1</source>
- </properties>
- <properties>
-  <frame-color/>
-  <fill-color>#008080</fill-color>
-  <frame-brightness>0</frame-brightness>
-  <fill-brightness>0</fill-brightness>
-  <dither-pattern>I3</dither-pattern>
-  <line-style/>
-  <valid>true</valid>
-  <visible>true</visible>
-  <transparent>false</transparent>
-  <width/>
-  <marked>false</marked>
-  <xfill>false</xfill>
-  <animation>0</animation>
-  <name>PAD 41/0</name>
-  <source>41/0@1</source>
- </properties>
- <properties>
-  <frame-color>#000000</frame-color>
-  <fill-color>#000000</fill-color>
-  <frame-brightness>0</frame-brightness>
-  <fill-brightness>0</fill-brightness>
-  <dither-pattern>I1</dither-pattern>
-  <line-style/>
-  <valid>true</valid>
-  <visible>true</visible>
-  <transparent>false</transparent>
-  <width/>
-  <marked>false</marked>
-  <xfill>false</xfill>
-  <animation>0</animation>
-  <name>FLOORPLAN 99/0</name>
-  <source>99/0@1</source>
- </properties>
- <properties>
-  <frame-color>#00ffff</frame-color>
-  <fill-color>#00ffff</fill-color>
-  <frame-brightness>0</frame-brightness>
-  <fill-brightness>0</fill-brightness>
-  <dither-pattern>I1</dither-pattern>
-  <line-style/>
-  <valid>true</valid>
-  <visible>true</visible>
-  <transparent>false</transparent>
-  <width/>
-  <marked>false</marked>
-  <xfill>false</xfill>
-  <animation>0</animation>
-  <name>LABEL_SETTINGS 100/0</name>
-  <source>100/0@1</source>
- </properties>
- <properties>
-  <frame-color>#00ffff</frame-color>
-  <fill-color>#00ffff</fill-color>
-  <frame-brightness>0</frame-brightness>
-  <fill-brightness>0</fill-brightness>
-  <dither-pattern>I1</dither-pattern>
-  <line-style/>
-  <valid>true</valid>
-  <visible>true</visible>
-  <transparent>false</transparent>
-  <width/>
-  <marked>false</marked>
-  <xfill>false</xfill>
-  <animation>0</animation>
-  <name>LABEL_INSTANCE 101/0</name>
-  <source>101/0@1</source>
- </properties>
-</layer-properties>
diff --git a/cspdk/samples/circuit_simulations.py b/cspdk/samples/circuit_simulations.py
index 4b53482..61374cf 100644
--- a/cspdk/samples/circuit_simulations.py
+++ b/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()
diff --git a/cspdk/tech.py b/cspdk/tech.py
index 7ef3675..9005025 100644
--- a/cspdk/tech.py
+++ b/cspdk/tech.py
@@ -300,7 +300,7 @@ def get_layer_stack(
     from gdsfactory.technology.klayout_tech import KLayoutTechnology
 
     LAYER_VIEWS = LayerViews(PATH.lyp_yaml)
-    LAYER_VIEWS.to_lyp(PATH.lyp)
+    # LAYER_VIEWS.to_lyp(PATH.lyp)
 
     connectivity = cast(list[ConnectivitySpec], [("HEATER", "HEATER", "PAD")])