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@lukasc-ubc
lukasc-ubc committed May 8, 2024
1 parent 7123c1b commit 23de106
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Showing 2 changed files with 66 additions and 15 deletions.
4 changes: 2 additions & 2 deletions klayout/EBeam/WAVEGUIDES.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -6,8 +6,8 @@
<model>ebeam_wg_integral_1550</model>
<sbends>true</sbends>
<bezier>0.20</bezier>
<radius>5.0</radius>
<width>0.5</width>
<radius>5.0</radius>
<width>0.5</width>
<component>
<layer>Si</layer>
<width>0.5</width>
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77 changes: 64 additions & 13 deletions klayout/EBeam/pymacros/pcells_EBeam_Beta/ebeam_test_bends.lym
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@
<prolog/>
<epilog/>
<doc/>
<autorun>true</autorun>
<autorun>false</autorun>
<autorun-early>false</autorun-early>
<priority>0</priority>
<shortcut/>
Expand Down Expand Up @@ -49,19 +49,30 @@ class ebeam_test_bends(pya.PCellDeclarationHelper):
from SiEPIC.utils import get_technology_by_name, load_Waveguides_by_Tech
self.TECHNOLOGY = get_technology_by_name(self.technology_name)

# Load all strip waveguides
self.waveguide_types = load_Waveguides_by_Tech(self.technology_name)
# Load all waveguides
waveguide_types = load_Waveguides_by_Tech(self.technology_name)

# Make a copy so that we don't modify the original definitions
import copy
self.waveguide_types = copy.deepcopy(waveguide_types)
'''
# Debugging:
print(id(waveguide_types))
print(id(self.waveguide_types))
'''

# downselect to non-compound types only.
self.waveguide_types = [t for t in self.waveguide_types if 'compound_waveguide' not in t]

# declare the parameters
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("override_width", self.TypeDouble, "Override waveguide width", default = 0.5)
self.param("override_radius", self.TypeDouble, "Override waveguide radius", default = 5)
self.param("override_bezier", self.TypeDouble, "Override waveguide Bezier parameter", default = 0.2)
self.param("override_width", self.TypeDouble, "Override waveguide width", default = 0)
self.param("override_radius", self.TypeDouble, "Override waveguide radius", default = 0)
self.param("override_bezier", self.TypeDouble, "Override waveguide Bezier parameter", default = 0)
self.param("ports_opposite", self.TypeBoolean, "Waveguide ports on opposite sides", default = False)
self.param("bends", self.TypeInt, "Number of bends", default = 10)
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)
Expand All @@ -77,25 +88,58 @@ class ebeam_test_bends(pya.PCellDeclarationHelper):
'''
Get the Waveguide Type from the PCell, and update waveguide parameters
'''
from SiEPIC.utils import get_technology_by_name, load_Waveguides_by_Tech
# Load all waveguides
waveguide_types = load_Waveguides_by_Tech(self.technology_name)
# Make a copy so that we don't modify the original definitions
import copy
self.waveguide_types = copy.deepcopy(waveguide_types)

self.waveguide_params = [t for t in self.waveguide_types if t['name'] == self.waveguide_type]
if not self.waveguide_params:
raise Exception ('Waveguides.XML not correctly configured')
self.waveguide_params = self.waveguide_params [0]

wg_params = self.waveguide_params
wg_params2 = wg_params

if self.override_width &gt; 0:
delta_width = self.override_width - float(self.waveguide_params['width'] )
self.waveguide_params['width'] = str(self.override_width)
else:
delta_width = 0
# Adjust all the width parameters
for wg in wg_params['component']:
wg['width'] = str ( float(wg['width']) + delta_width )

if self.override_radius &gt; 0:
self.waveguide_params['radius'] = str(self.override_radius)
if self.override_bezier &gt; 0:
self.waveguide_params['bezier'] = str(self.override_bezier)


# DevRec width
if ('DevRec' not in [wg['layer'] for wg in wg_params2['component']]):
if ('DevRec' not in [wg['layer'] for wg in wg_params['component']]):
from SiEPIC import _globals
self.devrec = max([float(wg['width']) for wg in wg_params2['component']]) + _globals.WG_DEVREC_SPACE * 2
self.devrec = max([float(wg['width']) for wg in wg_params['component']]) + _globals.WG_DEVREC_SPACE * 2
else:
self.devrec = float([f for f in wg_params2['component'] if f['layer']=='DevRec'][0]['width'])
self.devrec = float([f for f in wg_params['component'] if f['layer']=='DevRec'][0]['width'])

# Radius
self.radius = float(wg_params['radius'])

# Waveguide pin width
self.wg_width = float(wg_params['width'])

'''
# Debugging:
from SiEPIC.utils import load_Waveguides_by_Tech
print(load_Waveguides_by_Tech(self.technology_name)[0] )
print(id(load_Waveguides_by_Tech(self.technology_name)[0] ))
print(self.waveguide_types[0])
print(id(self.waveguide_types[0]))
'''
print(wg_params)


def produce_impl(self):

Expand All @@ -121,6 +165,8 @@ class ebeam_test_bends(pya.PCellDeclarationHelper):
# min loops
self.loops = max(self.loops, 1)



# spiral points
points = [DPoint(-length0,offset), DPoint(0.0,offset), DPoint(0.0,-offset), DPoint(length0,-offset)]
for i in range(1,self.loops*2,2):
Expand All @@ -141,23 +187,28 @@ class ebeam_test_bends(pya.PCellDeclarationHelper):
# Create a path and waveguide
path = DPath(points, 0.5)

if 1:
if 0:
# This inserts a waveguide where the parameters are fixed from Waveguide.XML
# using the Waveguide PCell
self.layout.technology_name = self.technology_name # required otherwise "create_cell" doesn't load
pcell = self.layout.create_cell("Waveguide", self.technology_name,
{"path": path,
"waveguide_type": self.waveguide_type})
t = Trans(Trans.R0, 0, 0)
self.cell.insert(CellInstArray(pcell.cell_index(), t))
else:
else:
# This inserts a waveguide where the parameters can be modified
# using the function layout_waveguide3.
from SiEPIC.utils.layout import layout_waveguide3
# Make sure the technology name is associated with the layout
# PCells don't seem to know to whom they belong!
if self.layout.technology_name == '':
self.layout.technology_name = self.technology_name
self.waveguide_params['waveguide_type'] = self.waveguide_type
ipoints = [p.to_itype(self.layout.dbu) for p in points]
waveguide_length = layout_waveguide3(self.cell, points, self.waveguide_params, debug=False)

waveguide_length = layout_waveguide3(self.cell, ipoints, self.waveguide_params, debug=False)
print('done layout_waveguide3 test_bends')

# Save the path, used for loading WAVEGUIDES.XML
import os
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