Schematic#
A schematic is a graph representation of your circuit.
For complex circuits, a schematic allows you to create symbols and hierarchy levels to represent your circuit.
Having a schematic allows you to also ensure that your layout matches you schematic (design intent).
There are many schematic capture tools out there:
Qucs-s: for RF.
Xschem: for analog circuits.
Lumerical interconnect: for photonic circuits.
These tools allow you to both create schematics with your mouse or by code.
gdsfactory also allows you to create complex Schematics directly from python with a very simple interface.
import gdsfactory as gf
import gdsfactory.schematic as gt
c = gf.c.mzi()
c.plot_netlist_graphviz(interactive=False)
c.plot_netlist()
<networkx.classes.graph.Graph at 0x7f8565730990>
Lets create a MZI lattice of 3 elements.
s = gt.Schematic()
s.add_instance("mzi1", gt.Instance(component=gf.c.mzi(delta_length=10)))
s.add_instance("mzi2", gt.Instance(component=gf.c.mzi(delta_length=100)))
s.add_instance("mzi3", gt.Instance(component=gf.c.mzi(delta_length=200)))
s.add_placement("mzi1", gt.Placement(x=000, y=0))
s.add_placement("mzi2", gt.Placement(x=100, y=100))
s.add_placement("mzi3", gt.Placement(x=200, y=0))
s.add_net(gt.Net(p1="mzi1,o2", p2="mzi2,o1"))
s.add_net(gt.Net(p1="mzi2,o2", p2="mzi3,o1"))
g = s.plot_graphviz()
You can also create a splitter tree.
s = gt.Schematic()
s.add_instance("s11", gt.Instance(component=gf.c.mmi1x2()))
s.add_instance("s21", gt.Instance(component=gf.c.mmi1x2()))
s.add_instance("s22", gt.Instance(component=gf.c.mmi1x2()))
s.add_placement("s11", gt.Placement(x=000, y=0))
s.add_placement("s21", gt.Placement(x=100, y=+50))
s.add_placement("s22", gt.Placement(x=100, y=-50))
s.add_net(gt.Net(p1="s11,o2", p2="s21,o1"))
s.add_net(gt.Net(p1="s11,o3", p2="s22,o1"))
g = s.plot_graphviz()
The nice thing is that you can abstract it to have as many levels as you need.
splitter = gf.components.mmi1x2()
n = 3
dx = 100
dy = 100
s = gt.Schematic()
for col in range(n):
rows = 2**col
for row in range(rows):
s.add_instance(f"s{col}{row}", gt.Instance(component=splitter))
s.add_placement(
f"s{col}{row}", gt.Placement(x=col * dx, y=(row - rows / 2) * dy)
)
if col < n - 1:
s.add_net(gt.Net(p1=f"s{col}{row},o2", p2=f"s{col+1}{2*row},o1"))
s.add_net(gt.Net(p1=f"s{col}{row},o3", p2=f"s{col+1}{2*row+1},o1"))
g = s.plot_graphviz()
splitter = gf.components.mmi1x2()
n = 5
dx = 100
dy = 100
s = gt.Schematic()
for col in range(n):
rows = 2**col
for row in range(rows):
s.add_instance(f"s{col}{row}", gt.Instance(component=splitter))
s.add_placement(
f"s{col}{row}", gt.Placement(x=col * dx, y=(row - rows / 2) * dy)
)
if col < n - 1:
s.add_net(gt.Net(p1=f"s{col}{row},o2", p2=f"s{col+1}{2*row},o1"))
s.add_net(gt.Net(p1=f"s{col}{row},o3", p2=f"s{col+1}{2*row+1},o1"))
g = s.plot_graphviz()
dict(s.netlist)
{'pdk': '',
'instances': {'s00': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's10': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's11': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's20': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's21': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's22': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's23': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's30': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's31': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's32': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's33': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's34': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's35': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's36': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's37': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's40': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's41': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's42': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's43': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's44': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's45': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's46': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's47': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's48': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's49': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's410': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's411': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's412': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's413': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's414': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0),
's415': Instance(component='mmi1x2', settings={'width_taper': 1.0, 'length_taper': 10.0, 'length_mmi': 5.5, 'width_mmi': 2.5, 'gap_mmi': 0.25, 'taper': 'taper', 'straight': 'straight', 'cross_section': 'strip'}, info={}, columns=1, rows=1, column_pitch=0, row_pitch=0)},
'placements': {'s00': Placement(x=0.0, y=-50.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's10': Placement(x=100.0, y=-100.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's11': Placement(x=100.0, y=0.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's20': Placement(x=200.0, y=-200.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's21': Placement(x=200.0, y=-100.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's22': Placement(x=200.0, y=0.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's23': Placement(x=200.0, y=100.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's30': Placement(x=300.0, y=-400.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's31': Placement(x=300.0, y=-300.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's32': Placement(x=300.0, y=-200.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's33': Placement(x=300.0, y=-100.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's34': Placement(x=300.0, y=0.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's35': Placement(x=300.0, y=100.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's36': Placement(x=300.0, y=200.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's37': Placement(x=300.0, y=300.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's40': Placement(x=400.0, y=-800.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's41': Placement(x=400.0, y=-700.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's42': Placement(x=400.0, y=-600.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's43': Placement(x=400.0, y=-500.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's44': Placement(x=400.0, y=-400.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's45': Placement(x=400.0, y=-300.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's46': Placement(x=400.0, y=-200.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's47': Placement(x=400.0, y=-100.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's48': Placement(x=400.0, y=0.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's49': Placement(x=400.0, y=100.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's410': Placement(x=400.0, y=200.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's411': Placement(x=400.0, y=300.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's412': Placement(x=400.0, y=400.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's413': Placement(x=400.0, y=500.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's414': Placement(x=400.0, y=600.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False),
's415': Placement(x=400.0, y=700.0, xmin=None, ymin=None, xmax=None, ymax=None, dx=0, dy=0, port=None, rotation=0, mirror=False)},
'connections': {},
'routes': {'route_10': Bundle(links={'s00,o2': 's10,o1'}, settings={}, routing_strategy='route_bundle'),
'route_11': Bundle(links={'s00,o3': 's11,o1'}, settings={}, routing_strategy='route_bundle'),
'route_12': Bundle(links={'s10,o2': 's20,o1'}, settings={}, routing_strategy='route_bundle'),
'route_13': Bundle(links={'s10,o3': 's21,o1'}, settings={}, routing_strategy='route_bundle'),
'route_14': Bundle(links={'s11,o2': 's22,o1'}, settings={}, routing_strategy='route_bundle'),
'route_15': Bundle(links={'s11,o3': 's23,o1'}, settings={}, routing_strategy='route_bundle'),
'route_16': Bundle(links={'s20,o2': 's30,o1'}, settings={}, routing_strategy='route_bundle'),
'route_17': Bundle(links={'s20,o3': 's31,o1'}, settings={}, routing_strategy='route_bundle'),
'route_18': Bundle(links={'s21,o2': 's32,o1'}, settings={}, routing_strategy='route_bundle'),
'route_19': Bundle(links={'s21,o3': 's33,o1'}, settings={}, routing_strategy='route_bundle'),
'route_20': Bundle(links={'s22,o2': 's34,o1'}, settings={}, routing_strategy='route_bundle'),
'route_21': Bundle(links={'s22,o3': 's35,o1'}, settings={}, routing_strategy='route_bundle'),
'route_22': Bundle(links={'s23,o2': 's36,o1'}, settings={}, routing_strategy='route_bundle'),
'route_23': Bundle(links={'s23,o3': 's37,o1'}, settings={}, routing_strategy='route_bundle'),
'route_24': Bundle(links={'s30,o2': 's40,o1'}, settings={}, routing_strategy='route_bundle'),
'route_25': Bundle(links={'s30,o3': 's41,o1'}, settings={}, routing_strategy='route_bundle'),
'route_26': Bundle(links={'s31,o2': 's42,o1'}, settings={}, routing_strategy='route_bundle'),
'route_27': Bundle(links={'s31,o3': 's43,o1'}, settings={}, routing_strategy='route_bundle'),
'route_28': Bundle(links={'s32,o2': 's44,o1'}, settings={}, routing_strategy='route_bundle'),
'route_29': Bundle(links={'s32,o3': 's45,o1'}, settings={}, routing_strategy='route_bundle'),
'route_30': Bundle(links={'s33,o2': 's46,o1'}, settings={}, routing_strategy='route_bundle'),
'route_31': Bundle(links={'s33,o3': 's47,o1'}, settings={}, routing_strategy='route_bundle'),
'route_32': Bundle(links={'s34,o2': 's48,o1'}, settings={}, routing_strategy='route_bundle'),
'route_33': Bundle(links={'s34,o3': 's49,o1'}, settings={}, routing_strategy='route_bundle'),
'route_34': Bundle(links={'s35,o2': 's410,o1'}, settings={}, routing_strategy='route_bundle'),
'route_35': Bundle(links={'s35,o3': 's411,o1'}, settings={}, routing_strategy='route_bundle'),
'route_36': Bundle(links={'s36,o2': 's412,o1'}, settings={}, routing_strategy='route_bundle'),
'route_37': Bundle(links={'s36,o3': 's413,o1'}, settings={}, routing_strategy='route_bundle'),
'route_38': Bundle(links={'s37,o2': 's414,o1'}, settings={}, routing_strategy='route_bundle'),
'route_39': Bundle(links={'s37,o3': 's415,o1'}, settings={}, routing_strategy='route_bundle')},
'name': None,
'info': {},
'ports': {},
'settings': {},
'nets': [],
'warnings': {}}
import yaml
yaml_component = yaml.dump(s.netlist.model_dump(exclude_none=True))
print(yaml_component)
connections: {}
info: {}
instances:
s00:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s10:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s11:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s20:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s21:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s22:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s23:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s30:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s31:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s32:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s33:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s34:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s35:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s36:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s37:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s40:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s41:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s410:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s411:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s412:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s413:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s414:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s415:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s42:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s43:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s44:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s45:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s46:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s47:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s48:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
s49:
column_pitch: 0
columns: 1
component: mmi1x2
row_pitch: 0
rows: 1
settings:
cross_section: strip
gap_mmi: 0.25
length_mmi: 5.5
length_taper: 10.0
straight: straight
taper: taper
width_mmi: 2.5
width_taper: 1.0
nets: []
pdk: ''
placements:
s00:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 0.0
y: -50.0
s10:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 100.0
y: -100.0
s11:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 100.0
y: 0.0
s20:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 200.0
y: -200.0
s21:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 200.0
y: -100.0
s22:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 200.0
y: 0.0
s23:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 200.0
y: 100.0
s30:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 300.0
y: -400.0
s31:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 300.0
y: -300.0
s32:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 300.0
y: -200.0
s33:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 300.0
y: -100.0
s34:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 300.0
y: 0.0
s35:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 300.0
y: 100.0
s36:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 300.0
y: 200.0
s37:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 300.0
y: 300.0
s40:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 400.0
y: -800.0
s41:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 400.0
y: -700.0
s410:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 400.0
y: 200.0
s411:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 400.0
y: 300.0
s412:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 400.0
y: 400.0
s413:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 400.0
y: 500.0
s414:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 400.0
y: 600.0
s415:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 400.0
y: 700.0
s42:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 400.0
y: -600.0
s43:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 400.0
y: -500.0
s44:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 400.0
y: -400.0
s45:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 400.0
y: -300.0
s46:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 400.0
y: -200.0
s47:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 400.0
y: -100.0
s48:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 400.0
y: 0.0
s49:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 400.0
y: 100.0
ports: {}
routes:
route_10:
links:
s00,o2: s10,o1
routing_strategy: route_bundle
settings: {}
route_11:
links:
s00,o3: s11,o1
routing_strategy: route_bundle
settings: {}
route_12:
links:
s10,o2: s20,o1
routing_strategy: route_bundle
settings: {}
route_13:
links:
s10,o3: s21,o1
routing_strategy: route_bundle
settings: {}
route_14:
links:
s11,o2: s22,o1
routing_strategy: route_bundle
settings: {}
route_15:
links:
s11,o3: s23,o1
routing_strategy: route_bundle
settings: {}
route_16:
links:
s20,o2: s30,o1
routing_strategy: route_bundle
settings: {}
route_17:
links:
s20,o3: s31,o1
routing_strategy: route_bundle
settings: {}
route_18:
links:
s21,o2: s32,o1
routing_strategy: route_bundle
settings: {}
route_19:
links:
s21,o3: s33,o1
routing_strategy: route_bundle
settings: {}
route_20:
links:
s22,o2: s34,o1
routing_strategy: route_bundle
settings: {}
route_21:
links:
s22,o3: s35,o1
routing_strategy: route_bundle
settings: {}
route_22:
links:
s23,o2: s36,o1
routing_strategy: route_bundle
settings: {}
route_23:
links:
s23,o3: s37,o1
routing_strategy: route_bundle
settings: {}
route_24:
links:
s30,o2: s40,o1
routing_strategy: route_bundle
settings: {}
route_25:
links:
s30,o3: s41,o1
routing_strategy: route_bundle
settings: {}
route_26:
links:
s31,o2: s42,o1
routing_strategy: route_bundle
settings: {}
route_27:
links:
s31,o3: s43,o1
routing_strategy: route_bundle
settings: {}
route_28:
links:
s32,o2: s44,o1
routing_strategy: route_bundle
settings: {}
route_29:
links:
s32,o3: s45,o1
routing_strategy: route_bundle
settings: {}
route_30:
links:
s33,o2: s46,o1
routing_strategy: route_bundle
settings: {}
route_31:
links:
s33,o3: s47,o1
routing_strategy: route_bundle
settings: {}
route_32:
links:
s34,o2: s48,o1
routing_strategy: route_bundle
settings: {}
route_33:
links:
s34,o3: s49,o1
routing_strategy: route_bundle
settings: {}
route_34:
links:
s35,o2: s410,o1
routing_strategy: route_bundle
settings: {}
route_35:
links:
s35,o3: s411,o1
routing_strategy: route_bundle
settings: {}
route_36:
links:
s36,o2: s412,o1
routing_strategy: route_bundle
settings: {}
route_37:
links:
s36,o3: s413,o1
routing_strategy: route_bundle
settings: {}
route_38:
links:
s37,o2: s414,o1
routing_strategy: route_bundle
settings: {}
route_39:
links:
s37,o3: s415,o1
routing_strategy: route_bundle
settings: {}
warnings: {}
yaml.dump(s.netlist.model_dump(exclude_none=True), open("schematic.yaml", "w"))
Python routing#
n = 2**3
splitter = gf.components.splitter_tree(noutputs=n, spacing=(50, 50))
dbr_array = gf.components.array(
component=gf.c.dbr, rows=n, columns=1, spacing=(0, 3), centered=True
)
s = gt.Schematic()
s.add_instance("s", gt.Instance(component=splitter))
s.add_instance("dbr", gt.Instance(component=dbr_array))
s.add_placement("s", gt.Placement(x=0, y=0))
s.add_placement("dbr", gt.Placement(x=300, y=0))
for i in range(n):
s.add_net(
gt.Net(
p1=f"s,o2_2_{i+1}",
p2=f"dbr,o1_{i+1}_1",
name="splitter_to_dbr",
settings=dict(radius=5, sort_ports=True, cross_section="strip"),
)
)
g = s.plot_graphviz()
Warning: node s, port o2_2_1 unrecognized
Warning: node dbr, port o1_1_1 unrecognized
Warning: node s, port o2_2_2 unrecognized
Warning: node dbr, port o1_2_1 unrecognized
Warning: node s, port o2_2_3 unrecognized
Warning: node dbr, port o1_3_1 unrecognized
Warning: node s, port o2_2_4 unrecognized
Warning: node dbr, port o1_4_1 unrecognized
Warning: node s, port o2_2_5 unrecognized
Warning: node dbr, port o1_5_1 unrecognized
Warning: node s, port o2_2_6 unrecognized
Warning: node dbr, port o1_6_1 unrecognized
Warning: node s, port o2_2_7 unrecognized
Warning: node dbr, port o1_7_1 unrecognized
Warning: node s, port o2_2_8 unrecognized
Warning: node dbr, port o1_8_1 unrecognized
dbr_array.pprint_ports()
┏━━━━━━━━┳━━━━━━━┳━━━━━━━━━━━━━┳━━━━━━━━━━┳━━━━━━━━━━━━━━━┳━━━━━━━━━━━┓ ┃ name ┃ width ┃ orientation ┃ layer ┃ center ┃ port_type ┃ ┡━━━━━━━━╇━━━━━━━╇━━━━━━━━━━━━━╇━━━━━━━━━━╇━━━━━━━━━━━━━━━╇━━━━━━━━━━━┩ │ o1_1_1 │ 0.5 │ 180.0 │ WG (1/0) │ (-1.6, -10.5) │ optical │ │ o1_2_1 │ 0.5 │ 180.0 │ WG (1/0) │ (-1.6, -7.5) │ optical │ │ o1_3_1 │ 0.5 │ 180.0 │ WG (1/0) │ (-1.6, -4.5) │ optical │ │ o1_4_1 │ 0.5 │ 180.0 │ WG (1/0) │ (-1.6, -1.5) │ optical │ │ o1_5_1 │ 0.5 │ 180.0 │ WG (1/0) │ (-1.6, 1.5) │ optical │ │ o1_6_1 │ 0.5 │ 180.0 │ WG (1/0) │ (-1.6, 4.5) │ optical │ │ o1_7_1 │ 0.5 │ 180.0 │ WG (1/0) │ (-1.6, 7.5) │ optical │ │ o1_8_1 │ 0.5 │ 180.0 │ WG (1/0) │ (-1.6, 10.5) │ optical │ └────────┴───────┴─────────────┴──────────┴───────────────┴───────────┘
splitter.pprint_ports()
┏━━━━━━━━┳━━━━━━━┳━━━━━━━━━━━━━┳━━━━━━━━━━┳━━━━━━━━━━━━━━━━┳━━━━━━━━━━━┓ ┃ name ┃ width ┃ orientation ┃ layer ┃ center ┃ port_type ┃ ┡━━━━━━━━╇━━━━━━━╇━━━━━━━━━━━━━╇━━━━━━━━━━╇━━━━━━━━━━━━━━━━╇━━━━━━━━━━━┩ │ o1_0_0 │ 0.5 │ 180.0 │ WG (1/0) │ (-10.0, 0.0) │ optical │ │ o2_2_1 │ 0.5 │ 0.0 │ WG (1/0) │ (165.5, -62.5) │ optical │ │ o2_2_2 │ 0.5 │ 0.0 │ WG (1/0) │ (165.5, -87.5) │ optical │ │ o2_2_3 │ 0.5 │ 0.0 │ WG (1/0) │ (165.5, -12.5) │ optical │ │ o2_2_4 │ 0.5 │ 0.0 │ WG (1/0) │ (165.5, -37.5) │ optical │ │ o2_2_5 │ 0.5 │ 0.0 │ WG (1/0) │ (165.5, 37.5) │ optical │ │ o2_2_6 │ 0.5 │ 0.0 │ WG (1/0) │ (165.5, 12.5) │ optical │ │ o2_2_7 │ 0.5 │ 0.0 │ WG (1/0) │ (165.5, 87.5) │ optical │ │ o2_2_8 │ 0.5 │ 0.0 │ WG (1/0) │ (165.5, 62.5) │ optical │ └────────┴───────┴─────────────┴──────────┴────────────────┴───────────┘
yaml.dump(s.netlist.model_dump(exclude_none=True), open("schematic.yaml", "w"))
yaml_component = yaml.dump(s.netlist.model_dump(exclude_none=True))
print(yaml_component)
connections: {}
info: {}
instances:
dbr:
column_pitch: 0
columns: 1
component: array
row_pitch: 0
rows: 1
settings:
add_ports: true
centered: true
columns: 1
component: dbr
rows: 8
spacing: !!python/tuple
- 0
- 3
s:
column_pitch: 0
columns: 1
component: splitter_tree
row_pitch: 0
rows: 1
settings:
bend_s: bend_s
coupler: mmi1x2
cross_section: strip
noutputs: 8
spacing: !!python/tuple
- 50
- 50
nets: []
pdk: ''
placements:
dbr:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 300.0
y: 0.0
s:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 0.0
y: 0.0
ports: {}
routes:
splitter_to_dbr:
links:
s,o2_2_1: dbr,o1_1_1
s,o2_2_2: dbr,o1_2_1
s,o2_2_3: dbr,o1_3_1
s,o2_2_4: dbr,o1_4_1
s,o2_2_5: dbr,o1_5_1
s,o2_2_6: dbr,o1_6_1
s,o2_2_7: dbr,o1_7_1
s,o2_2_8: dbr,o1_8_1
routing_strategy: route_bundle
settings:
cross_section: strip
radius: 5
sort_ports: true
warnings: {}
import yaml
from gdsfactory.serialization import convert_tuples_to_lists
conf = s.netlist.model_dump(exclude_none=True)
conf = convert_tuples_to_lists(conf)
yaml_component = yaml.dump(conf)
print(yaml_component)
connections: {}
info: {}
instances:
dbr:
column_pitch: 0
columns: 1
component: array
row_pitch: 0
rows: 1
settings:
add_ports: true
centered: true
columns: 1
component: dbr
rows: 8
spacing:
- 0
- 3
s:
column_pitch: 0
columns: 1
component: splitter_tree
row_pitch: 0
rows: 1
settings:
bend_s: bend_s
coupler: mmi1x2
cross_section: strip
noutputs: 8
spacing:
- 50
- 50
nets: []
pdk: ''
placements:
dbr:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 300.0
y: 0.0
s:
dx: 0
dy: 0
mirror: false
rotation: 0
x: 0.0
y: 0.0
ports: {}
routes:
splitter_to_dbr:
links:
s,o2_2_1: dbr,o1_1_1
s,o2_2_2: dbr,o1_2_1
s,o2_2_3: dbr,o1_3_1
s,o2_2_4: dbr,o1_4_1
s,o2_2_5: dbr,o1_5_1
s,o2_2_6: dbr,o1_6_1
s,o2_2_7: dbr,o1_7_1
s,o2_2_8: dbr,o1_8_1
routing_strategy: route_bundle
settings:
cross_section: strip
radius: 5
sort_ports: true
warnings: {}
c = gf.read.from_yaml(yaml_component)
c
