def add_padding_container(
component: Component,
layers: Tuple[Layer, ...] = (LAYER.PADDING, ),
**kwargs,
) -> Component:
"""Returns new component with padding added.
Args:
component
layers: list of layers
default: default padding
top: north padding
bottom: south padding
right: east padding
left: west padding
"""
c = Component()
c.component = component
cref = c << component
points = get_padding_points(component, **kwargs)
for layer in layers:
c.add_polygon(points, layer=layer)
c.ports = cref.ports
c.copy_child_info(component)
return c
def add_text(
component: ComponentOrFactory,
text: str = "",
text_offset: Float2 = (0, 0),
text_anchor: Anchor = "cc",
text_factory: ComponentFactory = text_rectangular_multi_layer,
) -> Component:
"""Returns component inside a new component with text geometry.
Args:
component:
text: text string.
text_offset: relative to component anchor. Defaults to center (cc).
text_anchor: relative to component (ce cw nc ne nw sc se sw center cc).
text_factory: function to add text labels.
"""
component = component() if callable(component) else component
component_new = Component()
component_new.component = component
ref = component_new.add_ref(component)
t = component_new << text_factory(text)
t.move((np.array(text_offset) + getattr(ref.size_info, text_anchor)))
component_new.add_ports(ref.ports)
component_new.copy_child_info(component)
return component_new
def add_electrical_pads_shortest(
component: Component,
pad: ComponentOrFactory = pad_function,
pad_port_spacing: float = 50.0,
select_ports=select_ports_electrical,
port_orientation: int = 90,
layer: gf.types.Layer = (31, 0),
**kwargs,
) -> Component:
"""Add pad to each closest electrical port.
Args:
component:
pad: pad element or function
pad_port_spacing: between pad and port
select_ports: function
port_orientation
layer: for the routing
**kwargs: pad_settings
"""
c = Component()
c.component = component
ref = c << component
ports = select_ports(ref.ports)
ports = list(ports.values())
pad = pad(**kwargs) if callable(pad) else pad
pad_port_spacing += pad.info_child.full["size"][0] / 2
for port in ports:
p = c << pad
if port_orientation == 0:
p.x = port.x + pad_port_spacing
p.y = port.y
c.add(route_quad(port, p.ports["e1"], layer=layer))
elif port_orientation == 180:
p.x = port.x - pad_port_spacing
p.y = port.y
c.add(route_quad(port, p.ports["e3"], layer=layer))
elif port_orientation == 90:
p.y = port.y + pad_port_spacing
p.x = port.x
c.add(route_quad(port, p.ports["e4"], layer=layer))
elif port_orientation == 270:
p.y = port.y - pad_port_spacing
p.x = port.x
c.add(route_quad(port, p.ports["e2"], layer=layer))
c.add_ports(ref.ports)
for port in ports:
c.ports.pop(port.name)
c.copy_child_info(component)
return c
def move(
component: Component,
origin=(0, 0),
destination=None,
axis: Optional[str] = None,
) -> Component:
"""Return container that contains a reference to the original component."""
component_new = Component()
component_new.component = component
ref = component_new.add_ref(component)
ref.move(origin=origin, destination=destination, axis=axis)
component_new.add_ports(ref.ports)
component_new.copy_child_info(component)
return component_new
def mirror(component: Component, p1: Float2 = (0, 1), p2: Float2 = (0, 0)) -> Component:
"""Returns mirrored component inside a new component.
Args:
p1: first point to define mirror axis
p2: second point to define mirror axis
"""
component_new = Component()
component_new.component = component
ref = component_new.add_ref(component)
ref.mirror(p1=p1, p2=p2)
component_new.add_ports(ref.ports)
component_new.copy_child_info(component)
return component_new
def add_grating_couplers(
component: Component,
grating_coupler: ComponentFactory = grating_coupler_te,
layer_label: Tuple[int, int] = (200, 0),
gc_port_name: str = "o1",
get_input_labels_function: Callable[..., List[Label]] = get_input_labels,
select_ports: Callable = select_ports_optical,
component_name: Optional[str] = None,
) -> Component:
"""Returns new component with grating couplers and labels.
Args:
component: to add grating_couplers
grating_coupler: grating_coupler function
layer_label: for label
gc_port_name: where to add label
get_input_labels_function: function to get label
select_ports: for selecting optical_ports
"""
c = Component()
c.component = component
component_name = component_name or component.info_child.name
c.add_ref(component)
grating_coupler = (
grating_coupler() if callable(grating_coupler) else grating_coupler
)
io_gratings = []
optical_ports = select_ports(component.ports)
optical_ports = list(optical_ports.values())
for port in optical_ports:
gc_ref = grating_coupler.ref()
gc_port = gc_ref.ports[gc_port_name]
gc_ref.connect(gc_port, port)
io_gratings.append(gc_ref)
c.add(gc_ref)
labels = get_input_labels_function(
io_gratings,
list(component.ports.values()),
component_name=component_name,
layer_label=layer_label,
gc_port_name=gc_port_name,
)
c.add(labels)
c.copy_child_info(component)
return c
def rotate(
component: ComponentOrFactory,
angle: int = 90,
) -> Component:
"""Returns rotated component inside a new component.
Most times you just need to place a reference and rotate it.
This rotate function just encapsulates the rotated reference into a new component.
Args:
component:
angle: in degrees
"""
component = component() if callable(component) else component
component_new = Component()
component_new.component = component
ref = component_new.add_ref(component)
ref.rotate(angle)
component_new.add_ports(ref.ports)
component_new.copy_child_info(component)
return component_new
def add_electrical_pads_top(
component: Component,
spacing: Float2 = (0.0, 100.0),
pad_array: ComponentFactory = pad_array_function,
select_ports=select_ports_electrical,
**kwargs,
) -> Component:
"""Returns new component with electrical ports connected to top pad array
Args:
component:
spacing: component to pad spacing
select_ports: function to select electrical ports
kwargs: pad settings
pad: pad element
pitch: x spacing
n: number of pads
**port_settings
"""
c = Component()
c.component = component
ref = c << component
ports = select_ports(ref.ports)
ports = list(ports.values())
pads = c << pad_array_function(
columns=len(ports), orientation=270, **kwargs)
pads.x = ref.x + spacing[0]
pads.ymin = ref.ymax + spacing[1]
ports_pads = list(pads.ports.values())
ports_pads = gf.routing.sort_ports.sort_ports_x(ports_pads)
ports_component = gf.routing.sort_ports.sort_ports_x(ports)
for p1, p2 in zip(ports_component, ports_pads):
c.add(get_route_electrical_shortest_path(p1, p2))
c.add_ports(ref.ports)
for port in ports:
c.ports.pop(port.name)
return c
def add_electrical_pads_top(
component: Component,
spacing: Float2 = (0.0, 100.0),
pad_array: ComponentFactory = pad_array_function,
select_ports=select_ports_electrical,
layer: gf.types.Layer = (31, 0),
) -> Component:
"""Returns new component with electrical ports connected to top pad array
Args:
component:
spacing: component to pad spacing
pad_array: function for pad_array
select_ports: function to select electrical ports
layer: for the routes
"""
c = Component()
c.component = component
ref = c << component
ports = select_ports(ref.ports)
ports = list(ports.values())
pads = c << pad_array(columns=len(ports), orientation=270)
pads.x = ref.x + spacing[0]
pads.ymin = ref.ymax + spacing[1]
ports_pads = list(pads.ports.values())
ports_pads = gf.routing.sort_ports.sort_ports_x(ports_pads)
ports_component = gf.routing.sort_ports.sort_ports_x(ports)
for p1, p2 in zip(ports_component, ports_pads):
c.add(route_quad(p1, p2, layer=layer))
c.add_ports(ref.ports)
for port in ports:
c.ports.pop(port.name)
c.copy_child_info(component)
return c
def add_termination(
component: Component,
ports: Optional[List[Port]] = None,
terminator: ComponentFactory = terminator_function,
port_name: Optional[str] = None,
port_type: str = "optical",
**kwargs
) -> Component:
"""Returns component with all or some ports terminated
Args:
component:
ports: optional list of ports to terminate (defaults to all)
terminator: factory for the terminator
port_name: for the terminator to connect to the component ports
port_type: of the ports that you want to terminate
**kwargs: for the ports you want to terminate (orientation, width)
"""
terminator = terminator() if callable(terminator) else terminator
port_name = port_name or terminator.get_ports_list()[0].name
c = Component()
c.add_ref(component)
c.component = component
ports_all = component.get_ports_list()
ports = ports or component.get_ports_list(port_type=port_type, **kwargs)
for port in ports_all:
if port in ports:
t_ref = c.add_ref(terminator)
t_ref.connect(port_name, port)
else:
c.add_port(port.name, port=port)
c.copy_child_info(component)
return c
def ring_single_dut(component=taper2,
wg_width=0.5,
gap=0.2,
length_x=4,
radius=5,
length_y=0,
coupler=coupler_ring,
straight=straight_function,
bend=bend_euler,
with_component=True,
**kwargs):
"""Single bus ring made of two couplers (ct: top, cb: bottom)
connected with two vertical straights (wyl: left, wyr: right)
(Device Under Test) in the middle to extract loss from quality factor
Args:
with_component: if False changes component for just a straight
.. code::
bl-wt-br
| | length_y
wl component
| |
--==cb==-- gap
length_x
"""
component = call_if_func(component)
assert_on_2nm_grid(gap)
coupler = call_if_func(coupler,
gap=gap,
radius=radius,
length_x=length_x,
**kwargs)
straight_side = call_if_func(straight,
width=wg_width,
length=length_y + component.xsize,
**kwargs)
straight_top = call_if_func(straight,
width=wg_width,
length=length_x,
**kwargs)
bend = call_if_func(bend, width=wg_width, radius=radius, **kwargs)
c = Component()
c.component = component
cb = c << coupler
wl = c << straight_side
if with_component:
d = c << component
else:
d = c << straight_side
bl = c << bend
br = c << bend
wt = c << straight_top
wl.connect(port="o2", destination=cb.ports["o2"])
bl.connect(port="o2", destination=wl.ports["o1"])
wt.connect(port="o1", destination=bl.ports["o1"])
br.connect(port="o2", destination=wt.ports["o2"])
d.connect(port="o1", destination=br.ports["o1"])
c.add_port("o2", port=cb.ports["o4"])
c.add_port("o1", port=cb.ports["o1"])
c.copy_child_info(component)
return c
def add_grating_couplers_with_loopback_fiber_single(
component: Component,
grating_coupler: ComponentFactory = grating_coupler_te,
layer_label: Tuple[int, int] = (200, 0),
gc_port_name: str = "o1",
get_input_labels_function: Callable[..., List[Label]] = get_input_labels,
get_input_label_text_loopback_function: Callable = get_input_label_text_loopback,
select_ports: Callable = select_ports_optical,
with_loopback: bool = True,
cross_section: CrossSectionFactory = strip,
component_name: Optional[str] = None,
fiber_spacing: float = 50.0,
loopback_xspacing: float = 5.0,
straight: ComponentFactory = straight_function,
rotation: int = 90,
) -> Component:
"""
Returns component with all ports terminated with grating couplers
Args:
component:
grating_coupler:
layer_label:
gc_port_name:
get_input_label_text_loopback_function:
with_loopback: adds a reference loopback
rotation: 90 for North South devices, 0 for East-West
"""
c = Component()
c.component = component
c.add_ref(component)
grating_coupler = (
grating_coupler() if callable(grating_coupler) else grating_coupler
)
component_name = component_name or component.info_child.name
io_gratings = []
optical_ports = select_ports(component.ports)
optical_ports = list(optical_ports.values())
for port in optical_ports:
gc_ref = grating_coupler.ref()
gc_port = gc_ref.ports[gc_port_name]
gc_ref.connect(gc_port, port)
io_gratings.append(gc_ref)
c.add(gc_ref)
labels = get_input_labels_function(
io_gratings,
list(component.ports.values()),
component_name=component_name,
layer_label=layer_label,
gc_port_name=gc_port_name,
)
c.add(labels)
p2 = optical_ports[0]
p1 = optical_ports[-1]
if with_loopback:
if rotation in [0, 180]:
length = abs(p2.x - p1.x)
wg = c << straight(length=length, cross_section=cross_section)
wg.rotate(rotation)
wg.xmin = p2.x
wg.ymin = c.ymax + grating_coupler.ysize / 2 + loopback_xspacing
else:
length = abs(p2.y - p1.y)
wg = c << straight(length=length, cross_section=cross_section)
wg.rotate(rotation)
wg.ymin = p1.y
wg.xmin = c.xmax + grating_coupler.ysize / 2 + loopback_xspacing
gci = c << grating_coupler
gco = c << grating_coupler
gci.connect(gc_port_name, wg.ports["o1"])
gco.connect(gc_port_name, wg.ports["o2"])
port = wg.ports["o2"]
text = get_input_label_text_loopback_function(
port=port, gc=grating_coupler, gc_index=0, component_name=component_name
)
c.add_label(
text=text,
position=port.midpoint,
anchor="o",
layer=layer_label,
)
port = wg.ports["o1"]
text = get_input_label_text_loopback_function(
port=port, gc=grating_coupler, gc_index=1, component_name=component_name
)
c.add_label(
text=text,
position=port.midpoint,
anchor="o",
layer=layer_label,
)
c.copy_child_info(component)
return c
def add_grating_couplers_with_loopback_fiber_array(
component: Component,
grating_coupler: ComponentFactory = grating_coupler_te,
excluded_ports: None = None,
grating_separation: float = 127.0,
bend_radius_loopback: Optional[float] = None,
gc_port_name: str = "o1",
gc_rotation: int = -90,
straight_separation: float = 5.0,
bend: ComponentFactory = bend_euler,
straight: ComponentFactory = straight_function,
layer_label: Tuple[int, int] = (200, 0),
layer_label_loopback: Optional[Tuple[int, int]] = None,
component_name: Optional[str] = None,
with_loopback: bool = True,
nlabels_loopback: int = 2,
get_input_labels_function: Callable = get_input_labels,
cross_section: CrossSectionFactory = strip,
select_ports: Callable = select_ports_optical,
**kwargs,
) -> Component:
"""Returns a component with grating_couplers and loopback.
Args:
component:
grating_coupler:
excluded_ports:
grating_separation:
bend_radius_loopback:
gc_port_name:
gc_rotation:
straight_separation:
bend:
straight:
layer_label:
component_name:
with_loopback: If True, add compact loopback alignment ports
nlabels_loopback: number of ports to label (0: no labels, 1: first port, 2: both ports)
cross_section:
**kwargs: cross_section settings
"""
x = cross_section(**kwargs)
bend_radius_loopback = bend_radius_loopback or x.info["radius"]
excluded_ports = excluded_ports or []
gc = grating_coupler() if callable(grating_coupler) else grating_coupler
direction = "S"
component_name = component_name or component.info_child.name
c = Component()
c.component = component
c.add_ref(component)
# Find grating port name if not specified
if gc_port_name is None:
gc_port_name = list(gc.ports.values())[0].name
# List the optical ports to connect
optical_ports = select_ports(component.ports)
optical_ports = list(optical_ports.values())
optical_ports = [p for p in optical_ports if p.name not in excluded_ports]
optical_ports = direction_ports_from_list_ports(optical_ports)[direction]
# Check if the ports are equally spaced
grating_separation_extracted = check_ports_have_equal_spacing(optical_ports)
if grating_separation_extracted != grating_separation:
raise ValueError(
"Grating separation must be {}. Got {}".format(
grating_separation, grating_separation_extracted
)
)
# Add grating references
references = []
for port in optical_ports:
gc_ref = c.add_ref(gc)
gc_ref.connect(gc.ports[gc_port_name].name, port)
references += [gc_ref]
labels = get_input_labels_function(
io_gratings=references,
ordered_ports=optical_ports,
component_name=component_name,
layer_label=layer_label,
gc_port_name=gc_port_name,
)
c.add(labels)
if with_loopback:
y0 = references[0].ports[gc_port_name].y
xs = [p.x for p in optical_ports]
x0 = min(xs) - grating_separation
x1 = max(xs) + grating_separation
gca1, gca2 = [
gc.ref(position=(x, y0), rotation=gc_rotation, port_id=gc_port_name)
for x in [x0, x1]
]
gsi = gc.size_info
port0 = gca1.ports[gc_port_name]
port1 = gca2.ports[gc_port_name]
p0 = port0.position
p1 = port1.position
a = bend_radius_loopback + 0.5
b = max(2 * a, grating_separation / 2)
y_bot_align_route = -gsi.width - straight_separation
points = np.array(
[
p0,
p0 + (0, a),
p0 + (b, a),
p0 + (b, y_bot_align_route),
p1 + (-b, y_bot_align_route),
p1 + (-b, a),
p1 + (0, a),
p1,
]
)
bend90 = bend(
radius=bend_radius_loopback, cross_section=cross_section, **kwargs
)
loopback_route = round_corners(
points=points,
bend=bend90,
straight=straight,
cross_section=cross_section,
**kwargs,
)
c.add([gca1, gca2])
c.add(loopback_route.references)
component_name_loopback = f"loopback_{component_name}"
if nlabels_loopback == 1:
io_gratings_loopback = [gca1]
ordered_ports_loopback = [port0]
if nlabels_loopback == 2:
io_gratings_loopback = [gca1, gca2]
ordered_ports_loopback = [port0, port1]
if nlabels_loopback == 0:
pass
elif 0 < nlabels_loopback <= 2:
c.add(
get_input_labels_function(
io_gratings=io_gratings_loopback,
ordered_ports=ordered_ports_loopback,
component_name=component_name_loopback,
layer_label=layer_label_loopback or layer_label,
gc_port_name=gc_port_name,
)
)
else:
raise ValueError(
f"Invalid nlabels_loopback = {nlabels_loopback}, "
"valid (0: no labels, 1: first port, 2: both ports2)"
)
c.copy_child_info(component)
return c
def add_fiber_array(
component: Component,
grating_coupler: Component = grating_coupler_te,
straight: ComponentFactory = straight,
bend: ComponentFactory = bend_euler,
gc_port_name: str = "o1",
gc_port_labels: Optional[Tuple[str, ...]] = None,
component_name: Optional[str] = None,
select_ports: Callable = select_ports_optical,
cross_section: CrossSectionFactory = strip,
get_input_labels_function: Optional[Callable] = get_input_labels,
layer_label: Optional[Tuple[int, int]] = (66, 0),
**kwargs,
) -> Component:
"""Returns component with optical IO (tapers, south routes and grating_couplers).
Args:
component: to connect
grating_coupler: grating coupler instance, function or list of functions
bend: bend_circular
gc_port_name: grating coupler input port name 'W0'
component_name: for the label
taper: taper function name or dict
get_input_labels_function: function to get input labels for grating couplers
get_input_label_text_loopback_function: function to get input label test
get_input_label_text_function
straight: straight
fanout_length: None # if None, automatic calculation of fanout length
max_y0_optical: None
with_loopback: True, adds loopback structures
straight_separation: 4.0
list_port_labels: None, adds TM labels to port indices in this list
connected_port_list_ids: None # only for type 0 optical routing
nb_optical_ports_lines: 1
force_manhattan: False
excluded_ports:
grating_indices: None
routing_straight: None
routing_method: get_route
optical_routing_type: None: auto, 0: no extension, 1: standard, 2: check
gc_rotation: -90
layer_label: LAYER.LABEL
input_port_indexes: [0]
.. plot::
:include-source:
import gdsfactory as gf
gf.config.set_plot_options(show_subports=False)
c = gf.components.crossing()
cc = gf.routing.add_fiber_array(
component=c,
optical_routing_type=2,
grating_coupler=gf.components.grating_coupler_elliptical_te,
with_loopback=False
)
cc.plot()
"""
get_input_labels_function = None if gc_port_labels else get_input_labels_function
component = gf.call_if_func(component)
grating_coupler = (grating_coupler()
if callable(grating_coupler) else grating_coupler)
if not component.ports:
return component
if isinstance(grating_coupler, list):
gc = grating_coupler[0]
else:
gc = grating_coupler
gc = gf.call_if_func(gc)
if gc_port_name not in gc.ports:
raise ValueError(
f"gc_port_name={gc_port_name} not in {gc.ports.keys()}")
component_name = component_name or component.get_parent_name()
component_new = Component()
component_new.component = component
optical_ports = select_ports(component.ports)
optical_ports_names = list(optical_ports.keys())
if not optical_ports:
return component
elements, io_gratings_lines, ports = route_fiber_array(
component=component,
grating_coupler=grating_coupler,
bend=bend,
straight=straight,
gc_port_name=gc_port_name,
component_name=component_name,
cross_section=cross_section,
select_ports=select_ports,
get_input_labels_function=get_input_labels_function,
layer_label=layer_label,
**kwargs,
)
if len(elements) == 0:
return component
for e in elements:
component_new.add(e)
for io_gratings in io_gratings_lines:
component_new.add(io_gratings)
component_new.add_ref(component)
for pname, p in component.ports.items():
if p.name not in optical_ports_names:
component_new.add_port(pname, port=p)
ports = sort_ports_x(ports)
if gc_port_labels:
for gc_port_label, port in zip(gc_port_labels, ports):
component_new.add_label(text=gc_port_label,
layer=layer_label,
position=port.midpoint)
for i, io_row in enumerate(io_gratings_lines):
for j, io in enumerate(io_row):
ports = io.get_ports_list(prefix="vertical")
if ports:
port = ports[0]
component_new.add_port(f"{port.name}_{i}{j}", port=port)
component_new.copy_child_info(component)
return component_new
def add_fiber_single(
component: ComponentOrFactory,
grating_coupler: ComponentFactory = grating_coupler_te,
layer_label: Tuple[int, int] = TECH.layer_label,
fiber_spacing: float = TECH.fiber_spacing,
bend: ComponentFactory = bend_circular,
straight: ComponentFactory = straight,
route_filter: Callable = get_route_from_waypoints,
min_input_to_output_spacing: float = 200.0,
optical_routing_type: int = 2,
with_loopback: bool = True,
component_name: Optional[str] = None,
gc_port_name: str = "o1",
get_input_label_text_loopback_function:
Callable = get_input_label_text_loopback,
get_input_label_text_function: Callable = get_input_label_text,
select_ports: Callable = select_ports_optical,
cross_section: CrossSectionFactory = strip,
**kwargs,
) -> Component:
r"""Returns component with grating ports and labels on each port.
Can add loopback reference structure next to it.
Args:
component: to connect
grating_coupler: grating coupler instance, function or list of functions
layer_label: for test and measurement label
fiber_spacing: between outputs
bend: bend_circular
straight: straight
route_filter:
max_y0_optical: None
with_loopback: True, adds loopback structures
straight_separation: 4.0
list_port_labels: None, adds TM labels to port indices in this list
connected_port_list_ids: None # only for type 0 optical routing
nb_optical_ports_lines: 1
force_manhattan: False
excluded_ports:
grating_indices: None
routing_method: get_route
gc_port_name: W0
get_input_labels_function: function to get input labels for grating couplers
optical_routing_type: None: autoselection, 0: no extension
gc_rotation: -90
component_name: name of component
cross_section:
**kwargs: cross_section settings
.. code::
fiber
______
/| | |
/ | | |
W0| | | |
\ | | |
| \|_|_|_
|
xmin = 0
.. plot::
:include-source:
import gdsfactory as gf
c = gf.components.crossing()
cc = gf.routing.add_fiber_single(
component=c,
optical_routing_type=0,
grating_coupler=gf.components.grating_coupler_elliptical_te,
)
cc.plot()
"""
component = component() if callable(component) else component
optical_ports = select_ports(component.ports)
optical_ports = list(optical_ports.values())
optical_port_names = [p.name for p in optical_ports]
if not optical_ports:
raise ValueError(f"No ports for {component.name}")
component = component() if callable(component) else component
component_name = component_name or component.get_parent_name()
gc = grating_coupler = (grating_coupler()
if callable(grating_coupler) else grating_coupler)
if gc_port_name not in gc.ports:
raise ValueError(f"{gc_port_name} not in {list(gc.ports.keys())}")
gc_port_to_edge = abs(gc.xmax - gc.ports[gc_port_name].midpoint[0])
c = Component()
c.component = component
cr = c << component
cr.rotate(90)
for port in cr.ports.values():
if port.name not in optical_port_names:
c.add_port(name=port.name, port=port)
if (len(optical_ports) == 2
and abs(optical_ports[0].x - optical_ports[1].x) >
min_input_to_output_spacing):
grating_coupler = call_if_func(grating_coupler)
grating_couplers = []
for port in cr.ports.values():
if port.name in optical_port_names:
gc_ref = grating_coupler.ref()
gc_ref.connect(gc_port_name, port)
grating_couplers.append(gc_ref)
elements = get_input_labels(
io_gratings=grating_couplers,
ordered_ports=list(cr.ports.values()),
component_name=component_name,
layer_label=layer_label,
gc_port_name=gc_port_name,
get_input_label_text_function=get_input_label_text_function,
)
else:
elements, grating_couplers = route_fiber_single(
component,
fiber_spacing=fiber_spacing,
bend=bend,
straight=straight,
route_filter=route_filter,
grating_coupler=grating_coupler,
layer_label=layer_label,
optical_routing_type=optical_routing_type,
min_input_to_output_spacing=min_input_to_output_spacing,
gc_port_name=gc_port_name,
component_name=component_name,
cross_section=cross_section,
select_ports=select_ports,
**kwargs,
)
for e in elements:
c.add(e)
for gc in grating_couplers:
c.add(gc)
for i, io_row in enumerate(grating_couplers):
if isinstance(io_row, list):
for j, io in enumerate(io_row):
ports = io.get_ports_list(prefix="vertical")
if ports:
port = ports[0]
c.add_port(f"{port.name}_{i}{j}", port=port)
else:
ports = io_row.get_ports_list(prefix="vertical")
if ports:
port = ports[0]
c.add_port(f"{port.name}_{i}", port=port)
if isinstance(grating_coupler, list):
grating_couplers = [call_if_func(g) for g in grating_coupler]
grating_coupler = grating_couplers[0]
else:
grating_coupler = call_if_func(grating_coupler)
grating_couplers = [grating_coupler]
if with_loopback:
length = c.ysize - 2 * gc_port_to_edge
wg = c << straight(
length=length, cross_section=cross_section, **kwargs)
wg.rotate(90)
wg.xmax = (c.xmin - fiber_spacing if abs(c.xmin) > abs(fiber_spacing)
else c.xmin - fiber_spacing)
wg.ymin = c.ymin + gc_port_to_edge
gci = c << grating_coupler
gco = c << grating_coupler
gci.connect(gc_port_name, wg.ports["o1"])
gco.connect(gc_port_name, wg.ports["o2"])
port = wg.ports["o2"]
text = get_input_label_text_loopback_function(
port=port,
gc=grating_coupler,
gc_index=0,
component_name=component_name)
c.add_label(
text=text,
position=port.midpoint,
anchor="o",
layer=layer_label,
)
port = wg.ports["o1"]
text = get_input_label_text_loopback_function(
port=port,
gc=grating_coupler,
gc_index=1,
component_name=component_name)
c.add_label(
text=text,
position=port.midpoint,
anchor="o",
layer=layer_label,
)
c.copy_child_info(component)
return c
def fanout2x2(
component: Component,
port_spacing: float = 20.0,
bend_length: Optional[float] = None,
npoints: int = 101,
select_ports: Callable = select_ports_optical,
) -> Component:
"""returns component with port_spacing.
Args:
component: to package
port_spacing: for the returned component
bend_length: length of the bend (defaults to port_spacing)
npoints: for sbend
select_ports: function to select optical_ports ports
"""
c = gf.Component()
component = component() if callable(component) else component
component.component = component
ref = c << component
ref.movey(-ref.y)
if bend_length is None:
bend_length = port_spacing
dx = bend_length
y = port_spacing / 2.0
p_w0 = ref.ports["o1"].midpoint
p_w1 = ref.ports["o2"].midpoint
p_e1 = ref.ports["o3"].midpoint
p_e0 = ref.ports["o4"].midpoint
y0 = p_e1[1]
dy = y - y0
control_points = [(0, 0), (dx / 2, 0), (dx / 2, dy), (dx, dy)]
bezier_bend_t = bezier(control_points=control_points,
npoints=npoints,
start_angle=0,
end_angle=0)
b_tr = bezier_bend_t.ref(port_id="o1", position=p_e1)
b_br = bezier_bend_t.ref(port_id="o1", position=p_e0, v_mirror=True)
b_tl = bezier_bend_t.ref(port_id="o1", position=p_w1, h_mirror=True)
b_bl = bezier_bend_t.ref(port_id="o1", position=p_w0, rotation=180)
c.add([b_tr, b_br, b_tl, b_bl])
c.add_port("o1", port=b_bl.ports["o2"])
c.add_port("o2", port=b_tl.ports["o2"])
c.add_port("o3", port=b_tr.ports["o2"])
c.add_port("o4", port=b_br.ports["o2"])
c.min_bend_radius = bezier_bend_t.info["min_bend_radius"]
optical_ports = select_ports(ref.ports)
for port_name in ref.ports.keys():
if port_name not in optical_ports:
c.add_port(port_name, port=ref.ports[port_name])
c.copy_child_info(component)
return c