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Spiral paperclip, added vertical waveguide output option #314

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merged 2 commits into from
Nov 3, 2024
Merged

Spiral paperclip, added vertical waveguide output option #314

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EBeam-Beta > spiral_paperclip: add vertical port option
lukasc-ubc Nov 3, 2024
ed3e24a
Update spiral_paperclip.py
lukasc-ubc Nov 3, 2024
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93 changes: 72 additions & 21 deletions klayout/EBeam/pymacros/pcells_EBeam_Beta/spiral_paperclip.py
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Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,7 @@
import pya
from pya import *
from SiEPIC.utils import get_technology_by_name

from pya import DPoint

class spiral_paperclip(pya.PCellDeclarationHelper):
def __init__(self):
Expand Down Expand Up @@ -51,6 +51,12 @@ def __init__(self):
"Waveguide ports on opposite sides",
default=False,
)
self.param(
"port_vertical",
self.TypeBoolean,
"One waveguide port pointing vertically",
default=False,
)
self.param("loops", self.TypeInt, "Number of loops", default=2)
self.minlength = 2 * float(self.waveguide_types[0]["radius"])
self.param(
Expand Down Expand Up @@ -332,15 +338,23 @@ def produce_impl(self):
)
)
points.append(
DPoint(-length0 - devrec * i, -radius * 2 + offset - devrec * i - extra)
DPoint(-length0 - devrec * i,
-radius * 2 + offset - devrec * i - extra)
)
points.append(
DPoint(
length0 + devrec * (i + 1),
-radius * 2 + offset - devrec * i - extra,
)
)
if not self.ports_opposite:
if self.port_vertical:
points.pop(-1)
points.pop(-1)
points.append(
DPoint(-length0 - devrec * i,
radius - offset + devrec * (i - 1) + extra)
)
if not self.ports_opposite and not self.port_vertical:
points.append(
DPoint(
length0 + devrec * (i + 1),
Expand Down Expand Up @@ -381,38 +395,57 @@ def produce_impl(self):
LayerPinRecN = self.layout.layer(self.TECHNOLOGY["PinRec"])
LayerDevRecN = self.layout.layer(self.TECHNOLOGY["DevRec"])
self.cell.clear(LayerPinRecN)
bbox = self.cell.bbox()
self.cell.clear(LayerDevRecN)
self.cell.clear(self.layout.layer(self.TECHNOLOGY["Waveguide"]))
self.cell.shapes(LayerDevRecN).insert(bbox)
devrec_box = self.cell.bbox()
if self.port_vertical:
devrec_box = (pya.Region(devrec_box) - pya.Region(pya.DBox(
-length0 - devrec * (i+1),
radius - offset + devrec * (i - 1) + extra,
-length0 - devrec * (i-0.5),
-radius * 2 + offset - devrec * (i+3) - extra).to_itype(self.layout.dbu))).merged()
self.cell.shapes(LayerDevRecN).insert(devrec_box)

# Create the pins on the input & output waveguides
from SiEPIC.utils.layout import make_pin

if self.ports_opposite:
if self.port_vertical:
make_pin(
self.cell,
"optA",
[
length0 + devrec * (i + 1),
-radius * 2 + offset - devrec * i - extra,
-length0 - devrec * (i),
radius - offset + devrec * (i - 1) + extra,
],
self.wg_width,
LayerPinRecN,
0,
270,
)
else:
make_pin(
self.cell,
"optA",
[
-length0 - devrec * (i + 1),
radius * 2 - offset + devrec * (i + 1) + extra,
],
self.wg_width,
LayerPinRecN,
180,
)
if self.ports_opposite:
make_pin(
self.cell,
"optA",
[
length0 + devrec * (i + 1),
-radius * 2 + offset - devrec * i - extra,
],
self.wg_width,
LayerPinRecN,
0,
)
else:
make_pin(
self.cell,
"optA",
[
-length0 - devrec * (i + 1),
radius * 2 - offset + devrec * (i + 1) + extra,
],
self.wg_width,
LayerPinRecN,
180,
)
make_pin(
self.cell,
"optB",
Expand Down Expand Up @@ -486,13 +519,30 @@ def __init__(self):
from SiEPIC.utils import load_Waveguides_by_Tech

waveguide_types = load_Waveguides_by_Tech(tech)

# test vertical waveguide
pcell = ly.create_cell(
"spiral_paperclip",
library,
{
"waveguide_type": waveguide_types[-1]["name"],
"length": 100,
"loops": 1,
"flatten": True,
"port_vertical": True,
},
)
t = Trans(Trans.R0, -pcell.bbox().width(), 0)
inst = topcell.insert(CellInstArray(pcell.cell_index(), t))

# loop through many permutations
xmax = 0
for ports_opposite in [True, False]:
for flatten in [True, False]:
y = 0
x = xmax
for wg in waveguide_types:
print(wg)
# print(wg)
pcell = ly.create_cell(
"spiral_paperclip",
library,
Expand All @@ -509,6 +559,7 @@ def __init__(self):
y += pcell.bbox().height() + 2000
xmax = max(xmax, x + inst.bbox().width())


zoom_out(topcell)


Expand Down
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