PCell spiral_paperclip update

- PCell spiral_paperclip: added ports_opposite parameter, and updated unit testing

klayout/EBeam/pymacros/SiEPIC_EBeam_Library_ANT.py

@@ -49,7 +49,7 @@ def __init__(self):
         print("Initializing '%s' Library." % library)
 
     # Set the description
-    self.description = "v0.4.6, ANT components"
+    self.description = "v0.4.7, ANT components"
 
     # Save the path, used for loading WAVEGUIDES.XML
     import os

klayout/EBeam/pymacros/SiEPIC_EBeam_Library_Beta.py

@@ -124,7 +124,7 @@ def PCell_get_parameters ( pcell ):
 
 """
 
-version = '0.4.6'
+version = '0.4.7'
 
 verbose=False
 

klayout/EBeam/pymacros/SiEPIC_EBeam_Library_SiN.py

@@ -70,7 +70,7 @@ def __init__(self):
         print("Initializing '%s' Library." % library)
 
     # Set the description
-    self.description = "v0.4.6, Silicon Nitride"
+    self.description = "v0.4.7, Silicon Nitride"
 
     # Save the path, used for loading WAVEGUIDES.XML
     import os

klayout/EBeam/pymacros/opics_ebeam/__init__.py

@@ -765,7 +765,7 @@ def load_sparameters(
 
 components_list = list(component_factory.keys())
 __all__ = components_list
-__version__ = "0.4.6"
+__version__ = "0.4.7"
 
 if __name__ == "__main__":
     import SiEPIC.opics as op

klayout/EBeam/pymacros/pcells_EBeam_Beta/spiral_paperclip.py

@@ -10,7 +10,11 @@
 - Pitch of the waveguides is determined by the DevRec layer
 - When executed directly, the unit test instantiates all the waveguide types
 
-by Lukas Chrostowski, 2023
+PCell options:
+ - waveguide type
+ - ports_opposite = True: input on left, output on right
+                  = False: both i/o on left
+by Lukas Chrostowski, 2023-2024
 '''
 
 
@@ -37,7 +41,7 @@ def __init__(self):
         p = self.param("waveguide_type", self.TypeList, "Waveguide Type", default = self.waveguide_types[0]['name'])
         for wa in self.waveguide_types:
             p.add_choice(wa['name'],wa['name'])
-
+        self.param("ports_opposite", self.TypeBoolean, "Waveguide ports on opposite sides", default = False)
         self.param("loops", self.TypeInt, "Number of loops", default = 2)
         self.minlength = 2*float(self.waveguide_types[0]['radius'])
         self.param("length", self.TypeDouble, "Inner length (min 2 x bend radius)", default = self.minlength)
@@ -155,8 +159,9 @@ def produce_impl(self):
             points.append(DPoint(-length0-devrec*i,radius*2-offset+devrec*(i-1)+extra))
             points.append(DPoint(-length0-devrec*i,-radius*2+offset-devrec*i-extra))
             points.append(DPoint(length0+devrec*(i+1),-radius*2+offset-devrec*i-extra))
-        points.append(DPoint(length0+devrec*(i+1),radius*2-offset+devrec*(i+1)+extra))
-        points.append(DPoint(-length0-devrec*(i+1),radius*2-offset+devrec*(i+1)+extra))
+        if not ports_opposite:
+            points.append(DPoint(length0+devrec*(i+1),radius*2-offset+devrec*(i+1)+extra))
+            points.append(DPoint(-length0-devrec*(i+1),radius*2-offset+devrec*(i+1)+extra))
         points.pop(0)
         points.insert(0, DPoint(-length0-devrec*(i+1),-offset+radius*2+devrec*i+extra))
 
@@ -183,7 +188,10 @@ def produce_impl(self):
 
             # Create the pins on the input & output waveguides
             from SiEPIC.utils.layout import make_pin
-            make_pin(self.cell, "optA", [-length0-devrec*(i+1),radius*2-offset+devrec*(i+1)+extra], self.wg_width, LayerPinRecN, 180)
+            if 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", [-length0-devrec*(i+1),-offset+radius*2+devrec*i+extra], self.wg_width, LayerPinRecN, 180)
 
 
@@ -234,14 +242,22 @@ def __init__(self):
     # Create spirals for all the types of waveguides
     from SiEPIC.utils import load_Waveguides_by_Tech
     waveguide_types = load_Waveguides_by_Tech(tech)   
-    y = 0
-    for wg in waveguide_types:
-        pcell = ly.create_cell("spiral_paperclip", library, {
-                'waveguide_type':wg['name'],
-                'length':100,
-                'loops':1})
-        t = Trans(Trans.R0, 0, y - pcell.bbox().bottom)
-        inst = topcell.insert(CellInstArray(pcell.cell_index(), t))
-        y += pcell.bbox().height()+2000
+    xmax = 0
+    for ports_opposite in [True, False]:
+        for flatten in [True, False]:
+            y = 0
+            x = xmax
+            for wg in waveguide_types:
+                pcell = ly.create_cell("spiral_paperclip", library, {
+                        'waveguide_type':wg['name'],
+                        'length':100,
+                        'loops':1,
+                        'flatten':flatten,
+                        'ports_opposite':ports_opposite})
+                t = Trans(Trans.R0, x, y - pcell.bbox().bottom)
+                inst = topcell.insert(CellInstArray(pcell.cell_index(), t))
+                y += pcell.bbox().height()+2000
+                xmax = max(xmax, x + inst.bbox().width())
+
 
     zoom_out(topcell)

klayout/grain.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <salt-grain>
  <name>siepic_ebeam_pdk</name>
- <version>0.4.6</version>
+ <version>0.4.7</version>
  <api-version>0.27</api-version>
  <title>SiEPIC EBeam PDK</title>
  <doc>A Process Design Kit for Silicon Photonics fabricated using Electron Beam Lithography (UW, ANT, SiEPICfab)</doc>

klayout/pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "siepic_ebeam_pdk"
-version = "0.4.6"
+version = "0.4.7"
 authors = [
   { name="Lukas Chrostowski", email="lukasc@ece.ubc.ca" },
 ]