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''' | ||
Debug sliver issue foundy by Susan at CMC | ||
by Lukas Chrostowski 2024 | ||
Caused when a bezier curve ending is the end of the waveguide. | ||
Caused by translate_from_normal(wg_pts, width/2 + (offset if turn > 0 else - offset)) | ||
Caused by Bezier curve, which returns: | ||
433, 12745 | ||
220, 12748 | ||
1, 12750 | ||
0, 12750 | ||
(length 111) | ||
''' | ||
designer_name = 'Example' | ||
top_cell_name = 'EBeam_%s_MZI' % designer_name | ||
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import pya | ||
from pya import * | ||
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import SiEPIC | ||
from SiEPIC._globals import Python_Env | ||
from SiEPIC.scripts import connect_cell, connect_pins_with_waveguide, zoom_out, export_layout | ||
from SiEPIC.utils.layout import new_layout, floorplan | ||
from SiEPIC.extend import to_itype | ||
import siepic_ebeam_pdk | ||
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import os | ||
tech_name = 'EBeam' | ||
from SiEPIC.utils import get_technology, get_technology_by_name | ||
TECHNOLOGY = get_technology_by_name(tech_name) | ||
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cell, ly = new_layout(tech_name, top_cell_name, GUI=True, overwrite = True) | ||
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waveguide_type='Strip TE 1550 nm, w=500 nm' | ||
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cell_ebeam_y = ly.create_cell('ebeam_y_1550', tech_name) | ||
t = pya.Trans.from_s('r0 %s, %s' % (-7400,0)) | ||
instY1 = cell.insert(pya.CellInstArray(cell_ebeam_y.cell_index(), t)) | ||
t = pya.Trans.from_s('r0 %s, %s' % (-7400,10e3)) | ||
instY2 = cell.insert(pya.CellInstArray(cell_ebeam_y.cell_index(), t)) | ||
wg1 = connect_pins_with_waveguide(instY1, 'opt2', instY2, 'opt2', waveguide_type=waveguide_type) | ||
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instY1.delete() | ||
instY2.delete() | ||
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# check for sliver: | ||
wg1.cell.shapes(ly.layer(ly.TECHNOLOGY['Si'])).each | ||
polygon = [p for p in wg1.cell.shapes(ly.layer(ly.TECHNOLOGY['Si'])).each()][0].polygon | ||
for p in [r for r in polygon.to_simple_polygon().each_point()]: | ||
if p.x < 0: | ||
print(' Polygon error: %s' %p) | ||
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# Save | ||
path = os.path.dirname(os.path.realpath(__file__)) | ||
filename = 'test_waveguide_sliver' | ||
file_out = export_layout(cell, path, filename, relative_path = '', format='oas') | ||
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from SiEPIC.utils import klive | ||
klive.show(file_out, technology=tech_name, keep_position=True) | ||
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