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remove base_cell
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@joamatab
joamatab committed Jun 20, 2024
1 parent 0a33d8b commit f79ff32
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37 changes: 0 additions & 37 deletions cspdk/base_cell.py
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229 changes: 53 additions & 176 deletions cspdk/si500/cells.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,6 @@
from gdsfactory.port import Port
from gdsfactory.typings import Component, ComponentSpec, CrossSectionSpec, LayerSpec

from cspdk.base_cell import base_cell
from cspdk.si500.tech import LAYER

################
Expand Down Expand Up @@ -273,115 +272,22 @@ def taper(
# MMIs
################
@gf.cell
def mmi1x2(
width: float | None = None,
width_taper: float = 1.5,
length_taper: float = 20.0,
length_mmi: float = 37.5,
width_mmi: float = 6.0,
gap_mmi: float = 1.47,
taper: ComponentSpec = taper,
straight: ComponentSpec = straight,
cross_section: CrossSectionSpec = "xs_rc",
) -> Component:
r"""1x2 MultiMode Interferometer (MMI).
Args:
width: input and output straight width. Defaults to cross_section width.
width_taper: interface between input straights and mmi region.
length_taper: into the mmi region.
length_mmi: in x direction.
width_mmi: in y direction.
gap_mmi: gap between tapered wg.
taper: taper function.
straight: straight function.
cross_section: specification (CrossSection, string or dict).
.. code::
length_mmi
<------>
________
| |
| \__
| __ o2
__/ /_ _ _ _
o1 __ | _ _ _ _| gap_mmi
\ \__
| __ o3
| /
|________|
<->
length_taper
"""
c = Component()
gap_mmi = gf.snap.snap_to_grid(gap_mmi, grid_factor=2)
x = gf.get_cross_section(cross_section)
xs_mmi = gf.get_cross_section(cross_section, width=width_mmi)
width = width or x.width

_taper = gf.get_component(
taper,
length=length_taper,
width1=width,
width2=width_taper,
cross_section=cross_section,
def mmi1x2() -> Component:
"""1x2 MultiMode Interferometer (MMI)."""
return gf.c.mmi1x2(
width_taper=1.5,
length_taper=20.0,
length_mmi=37.5,
width_mmi=6.0,
gap_mmi=1.47,
taper=taper,
straight=straight,
cross_section="xs_rc",
)

a = gap_mmi / 2 + width_taper / 2
_ = c << gf.get_component(straight, length=length_mmi, cross_section=xs_mmi)

ports = [
gf.Port(
"o1",
orientation=180,
center=(0, 0),
width=width_taper,
layer=x.layer,
cross_section=x,
),
gf.Port(
"o2",
orientation=0,
center=(+length_mmi, +a),
width=width_taper,
layer=x.layer,
cross_section=x,
),
gf.Port(
"o3",
orientation=0,
center=(+length_mmi, -a),
width=width_taper,
layer=x.layer,
cross_section=x,
),
]

for port in ports:
taper_ref = c << _taper
taper_ref.connect(port="o2", other=port, allow_width_mismatch=True)
c.add_port(name=port.name, port=taper_ref.ports["o1"])

c.flatten()
return c


@gf.cell
def mmi2x2(
width: float | None = None,
width_taper: float = 1.5,
length_taper: float = 50.2,
length_mmi: float = 5.5,
width_mmi: float = 6.0,
gap_mmi: float = 0.4,
taper: ComponentSpec = taper,
straight: ComponentSpec = straight,
cross_section: CrossSectionSpec = "strip",
) -> Component:
def mmi2x2() -> Component:
r"""Mmi 2x2.
Args:
Expand Down Expand Up @@ -415,52 +321,18 @@ def mmi2x2(
length_taper
"""
c = gf.Component()
gap_mmi = gf.snap.snap_to_grid(gap_mmi, grid_factor=2)
w_taper = width_taper
x = gf.get_cross_section(cross_section)
width = width or x.width

_taper = gf.get_component(
taper,
length=length_taper,
width1=width,
width2=w_taper,
cross_section=cross_section,
)

a = gap_mmi / 2 + width_taper / 2
_ = c << gf.get_component(
straight, length=length_mmi, width=width_mmi, cross_section=cross_section
return gf.c.mmi2x2(
width=None,
width_taper=1.5,
length_taper=50.2,
length_mmi=5.5,
width_mmi=6.0,
gap_mmi=0.4,
taper=taper,
straight=straight,
cross_section="xs_rc",
)

ports = [
gf.Port("o1", orientation=180, center=(0, -a), width=w_taper, cross_section=x),
gf.Port("o2", orientation=180, center=(0, +a), width=w_taper, cross_section=x),
gf.Port(
"o3",
orientation=0,
center=(length_mmi, +a),
width=w_taper,
cross_section=x,
),
gf.Port(
"o4",
orientation=0,
center=(length_mmi, -a),
width=w_taper,
cross_section=x,
),
]

for port in ports:
taper_ref = c << _taper
taper_ref.connect(port="o2", other=port, allow_width_mismatch=True)
c.add_port(name=port.name, port=taper_ref.ports["o1"])

c.flatten()
return c


##############################
# Evanescent couplers
Expand Down Expand Up @@ -789,31 +661,15 @@ def grating_coupler_elliptical(
# MZI
################

# TODO: (needs gdsfactory fix) currently function arguments need to be
# supplied as ComponentSpec strings, because when supplied as function they get
# serialized weirdly in the netlist

mzi = base_cell(
"mzi",
partial(
gf.components.mzi,
delta_length=10.0,
length_y=2.0,
length_x=0.1,
port_e1_splitter="o2",
port_e0_splitter="o3",
port_e1_combiner="o3",
port_e0_combiner="o4",
bend="bend_euler",
straight="straight",
splitter="mmi1x2",
combiner="mmi2x2",
cross_section="xs_rc",
),
)

mzi_rc = partial(
mzi,
_mzi = partial(
gf.components.mzi,
delta_length=10.0,
length_y=2.0,
length_x=0.1,
port_e1_splitter="o2",
port_e0_splitter="o3",
port_e1_combiner="o3",
port_e0_combiner="o4",
bend="bend_euler",
straight="straight",
splitter="mmi1x2",
Expand All @@ -822,11 +678,32 @@ def grating_coupler_elliptical(
)


@gf.cell
def mzi_rc(
delta_length: float = 10.0,
length_y: float = 2.0,
length_x: float = 0.1,
) -> gf.Component:
return _mzi(
bend="bend_euler",
straight="straight",
splitter="mmi1x2",
combiner="mmi2x2",
cross_section="xs_rc",
delta_length=delta_length,
length_y=length_y,
length_x=length_x,
)


################
# Packaging
################
@gf.cell
def pad(size=(100.0, 100.0)) -> gf.Component:
return gf.c.pad(size=size, layer="PAD")


pad = partial(gf.c.pad, layer="PAD", size=(100.0, 100.0))
rectangle = partial(gf.components.rectangle, layer=LAYER.FLOORPLAN)
grating_coupler_array = partial(
gf.components.grating_coupler_array,
Expand Down
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