def mzi1x2(
L0: float = 0.1,
DL: float = 9.0,
L2: float = 10.0,
bend_radius: float = 10.0,
bend90_factory: Callable = bend_circular,
straight_heater_factory: Callable = waveguide_heater,
straight_factory: Callable = waveguide,
coupler_factory: Callable = mmi1x2,
with_elec_connections: bool = False,
) -> Component:
""" Mzi 1x2
Args:
L0: vertical length for both and top arms
DL: bottom arm extra length
L2: L_top horizontal length
bend_radius: 10.0
bend90_factory: bend_circular
straight_heater_factory: waveguide_heater or waveguide
straight_factory: waveguide
coupler_factory: coupler
.. code::
__L2__
| |
L0 L0
| |
--| |--
| |
L0 L0
| |
DL DL
| |
|__L2__|
top_arm
-CP1= =CP2-
bot_arm
.. plot::
:include-source:
import pp
c = pp.c.mzi1x2(L0=0.1, DL=0, L2=10)
pp.plotgds(c)
"""
if not with_elec_connections:
straight_heater_factory = straight_factory
cpl = pp.call_if_func(coupler_factory)
arm_defaults = {
"L_top": L2,
"bend_radius": bend_radius,
"bend90_factory": bend90_factory,
"straight_heater_factory": straight_heater_factory,
"straight_factory": straight_factory,
"with_elec_connections": with_elec_connections,
}
arm_top = mzi_arm(L0=L0, **arm_defaults)
arm_bot = mzi_arm(L0=L0 + DL, **arm_defaults)
components = {
"CP1": (cpl, "None"),
"CP2": (cpl, "mirror_y"),
"arm_top": (arm_top, "None"),
"arm_bot": (arm_bot, "mirror_x"),
}
connections = [
# Bottom arm
("CP1", "E0", "arm_bot", "W0"),
("arm_bot", "E0", "CP2", "E0"),
# Top arm
("CP1", "E1", "arm_top", "W0"),
("arm_top", "E0", "CP2", "E0"),
]
if with_elec_connections:
ports_map = {
"W0": ("CP1", "W0"),
"E0": ("CP2", "W0"),
"E_TOP_0": ("arm_top", "E_0"),
"E_TOP_1": ("arm_top", "E_1"),
"E_TOP_2": ("arm_top", "E_2"),
"E_TOP_3": ("arm_top", "E_3"),
"E_BOT_0": ("arm_bot", "E_0"),
"E_BOT_1": ("arm_bot", "E_1"),
"E_BOT_2": ("arm_bot", "E_2"),
"E_BOT_3": ("arm_bot", "E_3"),
}
component = netlist_to_component(components, connections, ports_map)
# Need to connect common ground and redefine electrical ports
ports = component.ports
y_elec = ports["E_TOP_0"].y
for ls, le in [
("E_BOT_0", "E_BOT_1"),
("E_TOP_0", "E_TOP_1"),
("E_BOT_2", "E_TOP_2"),
]:
component.add_polygon(line(ports[ls], ports[le]),
layer=ports[ls].layer)
# Add GND
("E_BOT_2", "E_TOP_2")
component.add_port(
name="GND",
midpoint=0.5 *
(ports["E_BOT_2"].midpoint + ports["E_TOP_2"].midpoint),
orientation=180,
width=ports["E_BOT_2"].width,
layer=ports["E_BOT_2"].layer,
)
component.ports["E_TOP_3"].orientation = 0
component.ports["E_BOT_3"].orientation = 0
# Remove the eletrical ports that we have just used internally
for lbl in [
"E_BOT_0", "E_BOT_1", "E_TOP_0", "E_TOP_1", "E_BOT_2",
"E_TOP_2"
]:
component.ports.pop(lbl)
# Reroute electrical ports
_e_ports = select_electrical_ports(component)
conn, e_ports = route_elec_ports_to_side(_e_ports,
side="north",
y=y_elec)
for c in conn:
component.add(c)
for p in e_ports:
component.ports[p.name] = p
# Create nice electrical port names
component.ports["HT1"] = component.ports["E_TOP_3"]
component.ports.pop("E_TOP_3")
component.ports["HT2"] = component.ports["E_BOT_3"]
component.ports.pop("E_BOT_3")
else:
ports_map = {"W0": ("CP1", "W0"), "E0": ("CP2", "W0")}
component = netlist_to_component(components, connections, ports_map)
return component
def wg_heater_connector(
heater_ports: List[Port],
metal_width: float = 10.0,
tlm_layers: List[Tuple[int, int]] = [
LAYER.VIA1,
LAYER.M1,
LAYER.VIA2,
LAYER.M2,
LAYER.VIA3,
LAYER.M3,
],
) -> Component:
"""
Connects together a pair of wg heaters and connect to a M3 port
"""
cmp = Component()
assert len(heater_ports) == 2
assert (heater_ports[0].orientation == heater_ports[1].orientation
), "both ports should be facing in the same direction"
angle = heater_ports[0].orientation
angle = angle % 360
assert angle in [0, 180], "angle should be 0 or 180, got {}".format(angle)
dx = 0.0
dy = 0.0
angle_to_dps = {0: [(-dx, -dy), (-dx, dy)], 180: [(dx, -dy), (dx, dy)]}
ports = heater_ports
hw = heater_ports[0].width
if angle in [0, 180]:
ports.sort(key=lambda p: p.y)
else:
ports.sort(key=lambda p: p.x)
_heater_to_metal = tlm(width=0.5, height=0.5, layers=tlm_layers, vias=[])
tlm_positions = []
for port, dp in zip(ports, angle_to_dps[angle]):
# Extend heater
p = port.midpoint
# Add via/metal transitions
tlm_pos = p + dp
hm = _heater_to_metal.ref(position=tlm_pos)
tlm_positions += [tlm_pos]
cmp.add(hm)
ss = 1 if angle == 0 else -1
# Connect both sides with top metal
edge_metal_piece_width = 7.0
x = ss * edge_metal_piece_width / 2
top_metal_layer = tlm_layers[-1]
cmp.add_polygon(
line(
tlm_positions[0] + (x, -hw / 2),
tlm_positions[1] + (x, hw / 2),
edge_metal_piece_width,
),
layer=top_metal_layer,
)
# Add metal port
cmp.add_port(
name="0",
midpoint=0.5 * sum(tlm_positions) +
(ss * edge_metal_piece_width / 2, 0),
orientation=angle,
width=metal_width,
layer=top_metal_layer,
port_type="dc",
)
return cmp
def mzi2x2(
CL_1=20.147,
L0=60,
L1=7.38,
L2=10.0,
gap=0.234,
bend_radius=10.0,
bend90_factory=bend_circular,
straight_heater_factory=waveguide_heater,
straight_factory=waveguide,
coupler_factory=coupler,
with_elec_connections=True,
):
""" Mzi 2x2
Args:
CL_1: coupler length
L0: vertical length for both and top arms
L1: bottom arm extra length
L2: L_top horizontal length
gap: 0.235
bend_radius: 10.0
bend90_factory: bend_circular
straight_heater_factory: waveguide_heater or waveguide
straight_factory: waveguide
coupler_factory: coupler
.. code::
__L2__
| |
L0 L0
| |
==| |==
| |
L0 L0
| |
L1 L1
| |
|__L2__|
.. code::
top_arm
==CL_1= =CL_1===
bot_arm
.. plot::
:include-source:
import pp
c = pp.c.mzi2x2(CL_1=10, gap=0.2)
pp.plotgds(c)
"""
if callable(coupler_factory):
cpl = coupler_factory(length=CL_1, gap=gap)
else:
cpl = coupler_factory
arm_defaults = {
"L_top": L2,
"bend_radius": bend_radius,
"bend90_factory": bend90_factory,
"straight_heater_factory": straight_heater_factory,
"straight_factory": straight_factory,
"with_elec_connections": with_elec_connections,
}
arm_top = mzi_arm(L0=L0, **arm_defaults)
arm_bot = mzi_arm(L0=L0, L1=L1, **arm_defaults)
components = {
"CP1": (cpl, "None"),
"CP2": (cpl, "None"),
"arm_top": (arm_top, "None"),
"arm_bot": (arm_bot, "mirror_x"),
}
connections = [
## Top arm
("CP1", "E1", "arm_top", "W0"),
("arm_top", "E0", "CP2", "W1"),
## Bottom arm
("CP1", "E0", "arm_bot", "W0"),
("arm_bot", "E0", "CP2", "W0"),
]
if with_elec_connections:
ports_map = {
"W0": ("CP1", "W0"),
"W1": ("CP1", "W1"),
"E0": ("CP2", "E0"),
"E1": ("CP2", "E1"),
"E_TOP_0": ("arm_top", "E_0"),
"E_TOP_1": ("arm_top", "E_1"),
"E_TOP_2": ("arm_top", "E_2"),
"E_TOP_3": ("arm_top", "E_3"),
"E_BOT_0": ("arm_bot", "E_0"),
"E_BOT_1": ("arm_bot", "E_1"),
"E_BOT_2": ("arm_bot", "E_2"),
"E_BOT_3": ("arm_bot", "E_3"),
}
component = netlist_to_component(components, connections, ports_map)
# Need to connect common ground and redefine electrical ports
ports = component.ports
y_elec = ports["E_TOP_0"].y
for ls, le in [
("E_BOT_0", "E_BOT_1"),
("E_TOP_0", "E_TOP_1"),
("E_BOT_2", "E_TOP_2"),
]:
component.add_polygon(line(ports[ls], ports[le]), layer=ports[ls].layer)
# Add GND
component.add_port(
name="GND",
midpoint=0.5 * (ports["E_BOT_2"].midpoint + ports["E_TOP_2"].midpoint),
orientation=180,
width=ports["E_BOT_2"].width,
layer=ports["E_BOT_2"].layer,
)
component.ports["E_TOP_3"].orientation = 0
component.ports["E_BOT_3"].orientation = 0
# Remove the eletrical ports that we have just used internally
for lbl in ["E_BOT_0", "E_BOT_1", "E_TOP_0", "E_TOP_1", "E_BOT_2", "E_TOP_2"]:
component.ports.pop(lbl)
# Reroute electrical ports
_e_ports = select_electrical_ports(component)
conn, e_ports = route_elec_ports_to_side(_e_ports, side="north", y=y_elec)
for c in conn:
component.add(c)
for p in e_ports:
component.ports[p.name] = p
# Create nice electrical port names
component.ports["HT1"] = component.ports["E_TOP_3"]
component.ports.pop("E_TOP_3")
component.ports["HT2"] = component.ports["E_BOT_3"]
component.ports.pop("E_BOT_3")
# Make sure each port knows its name
for k, p in component.ports.items():
p.name = k
elif straight_heater_factory == waveguide:
ports_map = {
"W0": ("CP1", "W0"),
"W1": ("CP1", "W1"),
"E0": ("CP2", "E0"),
"E1": ("CP2", "E1"),
}
component = netlist_to_component(components, connections, ports_map)
return component
