Cells Si SOI 220nm Cband¶

add_fiber_array¶

Returns component with south routes and grating_couplers.

You can also use pads or other terminations instead of grating couplers.

Parameters:

Name	Type	Description	Default
`component`	`ComponentSpec`	component spec to connect to grating couplers.	`'straight'`
`grating_coupler`		spec for route terminations.	`gc`
`gc_port_name`	`str`	grating coupler input port name.	`'o1'`
`cross_section`	`CrossSectionSpec`	cross_section function.	`'strip'`
`kwargs`		additional arguments.	`{}`

.. plot:: :include-source:

import gdsfactory as gf

c = gf.components.crossing()
cc = gf.routing.add_fiber_array(
    component=c,
    grating_coupler=gf.components.grating_coupler_elliptical_te,
)
cc.plot()

:noindex:

add_fiber_array

import cspdk

c = cspdk.si220.cband.cells.add_fiber_array(component='straight', grating_coupler='grating_coupler_elliptical', gc_port_name='o1', cross_section='strip').copy()
c.draw_ports()
c.plot()

add_fiber_single¶

Returns component with south routes and grating_couplers.

You can also use pads or other terminations instead of grating couplers.

Parameters:

Name	Type	Description	Default
`component`	`ComponentSpec`	component spec to connect to grating couplers.	`'straight'`
`grating_coupler`		spec for route terminations.	`gc`
`gc_port_name`	`str`	grating coupler input port name.	`'o1'`
`cross_section`	`CrossSectionSpec`	cross_section function.	`'strip'`
`input_port_names`	`list[str] \| tuple[str, ...] \| None`	list of input port names to connect to grating couplers.	`None`
`pitch`	`float`	spacing between fibers.	`70`
`with_loopback`	`bool`	adds loopback structures.	`True`
`loopback_spacing`	`float`	spacing between loopback and test structure.	`100.0`
`kwargs`		additional arguments.	`{}`

.. plot:: :include-source:

import gdsfactory as gf

c = gf.components.crossing()
cc = gf.routing.add_fiber_single(
    component=c,
    grating_coupler=gf.components.grating_coupler_elliptical_te,
)
cc.plot()

:noindex:

add_fiber_single

import cspdk

c = cspdk.si220.cband.cells.add_fiber_single(component='straight', grating_coupler='grating_coupler_elliptical', gc_port_name='o1', cross_section='strip', pitch=70, with_loopback=True, loopback_spacing=100).copy()
c.draw_ports()
c.plot()

add_pads_top¶

Returns new component with ports connected top pads.

Parameters:

Name	Type	Description	Default
`component`	`ComponentSpec`	component spec to connect to.	`'straight_metal'`
`port_names`	`Strs \| None`	list of port names to connect to pads.	`None`
`cross_section`	`CrossSectionSpec`	cross_section function.	`'metal_routing'`
`pad_port_name`	`str`	pad port name.	`'e1'`
`pad`	`ComponentSpec`	pad function.	`'pad'`
`bend`	`ComponentSpec`	bend function.	`'wire_corner'`
`straight_separation`	`float`	from edge to edge.	`15.0`
`pad_pitch`	`float`	spacing between pads.	`100.0`
`port_type`	`str`	port type.	`'electrical'`
`allow_width_mismatch`	`bool`	if True, allows width mismatch.	`True`
`fanout_length`	`float \| None`	length of the fanout.	`80`
`route_width`	`float \| list[float]`	width of the route.	`0`
`kwargs`		additional arguments.	`{}`

.. plot:: :include-source:

import gdsfactory as gf
c = gf.c.nxn(
    xsize=600,
    ysize=200,
    north=2,
    south=3,
    wg_width=10,
    layer="M3",
    port_type="electrical",
)
cc = gf.routing.add_pads_top(component=c, port_names=("e1", "e4"), fanout_length=50)
cc.plot()

:noindex:

add_pads_top

import cspdk

c = cspdk.si220.cband.cells.add_pads_top(component='straight_metal', cross_section='metal_routing', pad_port_name='e1', pad='pad', bend='wire_corner', straight_separation=15, pad_pitch=100, port_type='electrical', allow_width_mismatch=True, fanout_length=80, route_width=0).copy()
c.draw_ports()
c.plot()

bend_euler¶

Regular degree euler bend.

Parameters:

Name	Type	Description	Default
`radius`	`float \| None`	in um. Defaults to cross_section_radius.	`None`
`angle`	`float`	total angle of the curve.	`90`
`p`	`float`	Proportion of the curve that is an Euler curve.	`0.5`
`width`	`float \| None`	width to use. Defaults to cross_section.width.	`None`
`cross_section`	`CrossSectionSpec`	specification (CrossSection, string, CrossSectionFactory dict).	`'strip'`
`allow_min_radius_violation`	`bool`	if True allows radius to be smaller than cross_section radius.	`False`

:noindex:

bend_euler

import cspdk

c = cspdk.si220.cband.cells.bend_euler(angle=90, p=0.5, cross_section='strip', allow_min_radius_violation=False).copy()
c.draw_ports()
c.plot()

bend_metal¶

Regular degree euler bend.

:noindex:

bend_metal

import cspdk

c = cspdk.si220.cband.cells.bend_metal(angle=90, cross_section='metal_routing').copy()
c.draw_ports()
c.plot()

bend_s¶

Return S bend with bezier curve.

stores min_bend_radius property in self.info['min_bend_radius'] min_bend_radius depends on height and length

Parameters:

Name	Type	Description	Default
`size`	`Size`	in x and y direction.	`(11, 1.8)`
`cross_section`	`CrossSectionSpec`	spec.	`'strip'`
`width`	`float \| None`	width of the waveguide. If None, it will use the width of the cross_section.	`None`
`allow_min_radius_violation`	`bool`	allows min radius violations.	`False`

:noindex:

bend_s

import cspdk

c = cspdk.si220.cband.cells.bend_s(size=(11, 1.8), cross_section='strip', allow_min_radius_violation=False).copy()
c.draw_ports()
c.plot()

bend_s_metal¶

Return S bend with bezier curve.

stores min_bend_radius property in self.info['min_bend_radius'] min_bend_radius depends on height and length

Parameters:

Name	Type	Description	Default
`size`	`Size`	in x and y direction.	`(11, 1.8)`
`cross_section`	`CrossSectionSpec`	spec.	`'metal_routing'`
`width`	`float \| None`	width of the waveguide. If None, it will use the width of the cross_section.	`None`
`allow_min_radius_violation`	`bool`	allows min radius violations.	`True`

:noindex:

bend_s_metal

import cspdk

c = cspdk.si220.cband.cells.bend_s_metal(size=(11, 1.8), cross_section='metal_routing', allow_min_radius_violation=True).copy()
c.draw_ports()
c.plot()

compass¶

Rectangle with ports on each edge (north, south, east, and west).

Parameters:

Name	Type	Description	Default
`size`	`Size`	rectangle size.	`(4, 2)`
`layer`	`LayerSpec`	tuple (int, int).	`'PAD'`
`port_type`	`str \| None`	optical, electrical.	`None`
`port_inclusion`	`float`	from edge.	`0.0`
`port_orientations`	`Ints \| None`	list of port_orientations to add. None does not add ports.	`(180, 90, 0, -90)`
`auto_rename_ports`	`bool`	auto rename ports.	`True`

:noindex:

compass

import cspdk

c = cspdk.si220.cband.cells.compass(size=(4, 2), layer='PAD', port_inclusion=0, port_orientations=(180, 90, 0, -90), auto_rename_ports=True).copy()
c.draw_ports()
c.plot()

coupler¶

Returns Symmetric coupler.

Parameters:

Name	Type	Description	Default
`length`	`float`	of coupling region in um.	`14.5`
`gap`	`float`	of coupling region in um.	`gap_strip`

:noindex:

coupler

import cspdk

c = cspdk.si220.cband.cells.coupler(length=14.5, gap=0.27).copy()
c.draw_ports()
c.plot()

coupler_rib¶

Returns Symmetric coupler.

Parameters:

Name	Type	Description	Default
`length`	`float`	of coupling region in um.	`20`
`gap`	`float`	of coupling region in um.	`gap_rib`

:noindex:

coupler_rib

import cspdk

c = cspdk.si220.cband.cells.coupler_rib(length=20, gap=0.27).copy()
c.draw_ports()
c.plot()

coupler_ring¶

Returns Coupler for ring.

Parameters:

Name	Type	Description	Default
`length_x`	`float`	length of the parallel coupled straight waveguides.	`4`
`gap`	`float`	gap between for coupler.	`gap_strip`
`radius`	`float`	for the bend and coupler.	`radius_strip`
`bend`	`ComponentSpec`	90 degrees bend spec.	`'bend_euler'`
`straight`	`ComponentSpec`	straight spec.	`'straight'`
`cross_section`	`str`	cross_section spec.	`'strip'`
`length_extension`	`float`	length extension for the coupler.	`10`

:noindex:

coupler_ring

import cspdk

c = cspdk.si220.cband.cells.coupler_ring(length_x=4, gap=0.27, radius=5, bend='bend_euler', straight='straight', cross_section='strip', length_extension=10).copy()
c.draw_ports()
c.plot()

crossing¶

SOI220nm_1550nm_TE_STRIP_Waveguide_Crossing fixed cell.

:noindex:

crossing

import cspdk

c = cspdk.si220.cband.cells.crossing().copy()
c.draw_ports()
c.plot()

crossing_rib¶

SOI220nm_1550nm_TE_RIB_Waveguide_Crossing fixed cell.

:noindex:

crossing_rib

import cspdk

c = cspdk.si220.cband.cells.crossing_rib().copy()
c.draw_ports()
c.plot()

die¶

A die.

:noindex:

die

import cspdk

c = cspdk.si220.cband.cells.die(size=(16000, 3000)).copy()
c.draw_ports()
c.plot()

die_with_pads¶

A die with grating couplers and pads.

`compass(size=(4, 2), layer='PAD', port_type=None, port_inclusion=0.0, port_orientations=(180, 90, 0, -90), auto_rename_ports=True)` ¶

Rectangle with ports on each edge (north, south, east, and west).

Parameters:

Name	Type	Description	Default
`size`	`Size`	rectangle size.	`(4, 2)`
`layer`	`LayerSpec`	tuple (int, int).	`'PAD'`
`port_type`	`str \| None`	optical, electrical.	`None`
`port_inclusion`	`float`	from edge.	`0.0`
`port_orientations`	`Ints \| None`	list of port_orientations to add. None does not add ports.	`(180, 90, 0, -90)`
`auto_rename_ports`	`bool`	auto rename ports.	`True`

`die(size=(16000.0, 1 * 3000.0))` ¶

A die.

`die_with_pads(size=(11470.0, 4900.0), ngratings=14, npads=31, grating_pitch=250.0, pad_pitch=300.0, grating_coupler='grating_coupler_rectangular', cross_section='strip', pad='pad', layer_floorplan='FLOORPLAN', edge_to_pad_distance=150.0, edge_to_grating_distance=150.0, with_loopback=True)` ¶

A die with grating couplers and pads.

Parameters:

Name	Type	Description	Default
`size`	`tuple[float, float]`	the size of the die, in um.	`(11470.0, 4900.0)`
`ngratings`	`int`	the number of grating couplers.	`14`
`npads`	`int`	the number of pads.	`31`
`grating_pitch`	`float`	the pitch of the grating couplers, in um.	`250.0`
`pad_pitch`	`float`	the pitch of the pads, in um.	`300.0`
`grating_coupler`	`ComponentSpec \| None`	the grating coupler component. None skips the grating couplers.	`'grating_coupler_rectangular'`
`cross_section`	`CrossSectionSpec`	the cross section.	`'strip'`
`pad`	`ComponentSpec`	the pad component.	`'pad'`
`layer_floorplan`	`LayerSpec`	the layer of the floorplan.	`'FLOORPLAN'`
`edge_to_pad_distance`	`float`	the distance from the edge to the pads, in um.	`150.0`
`edge_to_grating_distance`	`float`	the distance from the edge to the grating couplers, in um.	`150.0`
`with_loopback`	`bool`	if True, adds a loopback between edge GCs. Only works for rotation = 90 for now.	`True`

`pad(size=(90.0, 90.0), layer='PAD', port_inclusion=0, port_orientation=0)` ¶

Returns rectangular pad with ports.

Parameters:

Name	Type	Description	Default
`size`	`tuple[float, float]`	x, y size.	`(90.0, 90.0)`
`layer`	`LayerSpec`	pad layer.	`'PAD'`
`bbox_layers`		list of layers.	required
`bbox_offsets`		Optional offsets for each layer with respect to size. positive grows, negative shrinks the size.	required
`port_inclusion`	`float`	from edge.	`0`
`port_orientation`	`float`	in degrees.	`0`

`rectangle(size=(4, 2), layer='PAD', centered=False, port_type=None, port_orientations=(180, 90, 0, -90))` ¶

Returns a rectangle.

Parameters:

Name	Type	Description	Default
`size`	`Size`	(tuple) Width and height of rectangle.	`(4, 2)`
`layer`	`LayerSpec`	Specific layer to put polygon geometry on.	`'PAD'`
`centered`	`bool`	True sets center to (0, 0), False sets south-west to (0, 0).	`False`
`port_type`	`str \| None`	optical, electrical.	`None`
`port_orientations`	`Ints \| None`	list of port_orientations to add. None adds no ports.	`(180, 90, 0, -90)`

:noindex:

die_with_pads

import cspdk

c = cspdk.si220.cband.cells.die_with_pads(size=(11470, 4900), ngratings=14, npads=31, grating_pitch=250, pad_pitch=300, grating_coupler='grating_coupler_rectangular', cross_section='strip', pad='pad', layer_floorplan='FLOORPLAN', edge_to_pad_distance=150, edge_to_grating_distance=150, with_loopback=True).copy()
c.draw_ports()
c.plot()

grating_coupler_elliptical¶

A grating coupler with curved but parallel teeth.

Parameters:

Name	Type	Description	Default
`wavelength`	`float`	the center wavelength for which the grating is designed	`1.55`
`grating_line_width`		the line width of the grating	`0.315`
`cross_section`		a cross section or its name or a function generating a cross section.	`'strip'`

:noindex:

grating_coupler_elliptical

import cspdk

c = cspdk.si220.cband.cells.grating_coupler_elliptical(wavelength=1.55, grating_line_width=0.315, cross_section='strip').copy()
c.draw_ports()
c.plot()

grating_coupler_rectangular¶

A grating coupler with straight and parallel teeth.

Parameters:

Name	Type	Description	Default
`period`		the period of the grating	`0.315 * 2`
`n_periods`	`int`	the number of grating teeth	`60`
`length_taper`	`float`	the length of the taper tapering up to the grating	`350.0`
`wavelength`	`float`	the center wavelength for which the grating is designed	`1.55`
`cross_section`		a cross section or its name or a function generating a cross section.	`'strip'`

:noindex:

grating_coupler_rectangular

import cspdk

c = cspdk.si220.cband.cells.grating_coupler_rectangular(period=0.63, n_periods=60, length_taper=350, wavelength=1.55, cross_section='strip').copy()
c.draw_ports()
c.plot()

grating_coupler_rectangular_rib¶

:noindex:

grating_coupler_rectangular_rib

import cspdk

c = cspdk.si220.cband.cells.grating_coupler_rectangular_rib(period=0.5, n_periods=60, length_taper=350, wavelength=1.55, cross_section='rib').copy()
c.draw_ports()
c.plot()

heater¶

Heater fixed cell.

:noindex:

heater

import cspdk

c = cspdk.si220.cband.cells.heater().copy()
c.draw_ports()
c.plot()

mmi1x2¶

An mmi1x2.

An mmi1x2 is a splitter that splits a single input to two outputs

Parameters:

Name	Type	Description	Default
`width`	`float \| None`	the width of the waveguides connecting at the mmi ports.	`None`
`width_taper`	`float`	the width at the base of the mmi body.	`1.5`
`length_taper`	`float`	the length of the tapers going towards the mmi body.	`20.0`
`length_mmi`	`float`	the length of the mmi body.	`31.0`
`width_mmi`	`float`	the width of the mmi body.	`6.0`
`gap_mmi`	`float`	the gap between the tapers at the mmi body.	`1.64`
`cross_section`	`CrossSectionSpec`	a cross section or its name or a function generating a cross section.	`'strip'`

:noindex:

mmi1x2

import cspdk

c = cspdk.si220.cband.cells.mmi1x2(width_taper=1.5, length_taper=20, length_mmi=31, width_mmi=6, gap_mmi=1.64, cross_section='strip').copy()
c.draw_ports()
c.plot()

mmi1x2_rib¶

:noindex:

mmi1x2_rib

import cspdk

c = cspdk.si220.cband.cells.mmi1x2_rib(width_taper=1.5, length_taper=20, length_mmi=32.7, width_mmi=6, gap_mmi=1.64, cross_section='rib').copy()
c.draw_ports()
c.plot()

mmi2x2¶

An mmi2x2.

An mmi2x2 is a 2x2 splitter

Parameters:

Name	Type	Description	Default
`width`	`float \| None`	the width of the waveguides connecting at the mmi ports	`None`
`width_taper`	`float`	the width at the base of the mmi body	`1.5`
`length_taper`	`float`	the length of the tapers going towards the mmi body	`20.0`
`length_mmi`	`float`	the length of the mmi body	`42.5`
`width_mmi`	`float`	the width of the mmi body	`6.0`
`gap_mmi`	`float`	the gap between the tapers at the mmi body	`0.5`
`cross_section`	`CrossSectionSpec`	a cross section or its name or a function generating a cross section.	`'strip'`

:noindex:

mmi2x2

import cspdk

c = cspdk.si220.cband.cells.mmi2x2(width_taper=1.5, length_taper=20, length_mmi=42.5, width_mmi=6, gap_mmi=0.5, cross_section='strip').copy()
c.draw_ports()
c.plot()

mmi2x2_rib¶

:noindex:

mmi2x2_rib

import cspdk

c = cspdk.si220.cband.cells.mmi2x2_rib(width_taper=1.5, length_taper=20, length_mmi=44.8, width_mmi=6, gap_mmi=0.53, cross_section='rib').copy()
c.draw_ports()
c.plot()

mzi¶

Mzi.

Parameters:

Name	Type	Description	Default
`delta_length`	`float`	bottom arm vertical extra length.	`10`
`bend`	`ComponentSpec`	90 degrees bend library.	`'bend_euler'`
`straight`	`ComponentSpec`	straight function.	`'straight'`
`splitter`	`ComponentSpec`	splitter function.	`'coupler'`
`combiner`	`ComponentSpec \| None`	combiner function.	`None`
`port_e1_splitter`	`str`	east top splitter port.	`'o3'`
`port_e0_splitter`	`str`	east bot splitter port.	`'o4'`
`port_e1_combiner`	`str`	east top combiner port.	`'o3'`
`port_e0_combiner`	`str`	east bot combiner port.	`'o4'`
`cross_section`	`CrossSectionSpec`	for routing (sxtop/sxbot to combiner).	`'strip'`

:noindex:

mzi

import cspdk

c = cspdk.si220.cband.cells.mzi(delta_length=10, bend='bend_euler', straight='straight', splitter='coupler', port_e1_splitter='o3', port_e0_splitter='o4', port_e1_combiner='o3', port_e0_combiner='o4', cross_section='strip').copy()
c.draw_ports()
c.plot()

pack_doe¶

:noindex:

pack_doe

import cspdk

c = cspdk.si220.cband.cells.pack_doe(do_permutations=False).copy()
c.draw_ports()
c.plot()

pack_doe_grid¶

:noindex:

pack_doe_grid

import cspdk

c = cspdk.si220.cband.cells.pack_doe_grid(do_permutations=False, with_text=False).copy()
c.draw_ports()
c.plot()

pad¶

Returns rectangular pad with ports.

Parameters:

Name	Type	Description	Default
`size`	`tuple[float, float]`	x, y size.	`(90.0, 90.0)`
`layer`	`LayerSpec`	pad layer.	`'PAD'`
`bbox_layers`		list of layers.	required
`bbox_offsets`		Optional offsets for each layer with respect to size. positive grows, negative shrinks the size.	required
`port_inclusion`	`float`	from edge.	`0`
`port_orientation`	`float`	in degrees.	`0`

:noindex:

pad

import cspdk

c = cspdk.si220.cband.cells.pad(size=(90, 90), layer='PAD', port_inclusion=0, port_orientation=0).copy()
c.draw_ports()
c.plot()

rectangle¶

Returns a rectangle.

Parameters:

Name	Type	Description	Default
`size`	`Size`	(tuple) Width and height of rectangle.	`(4, 2)`
`layer`	`LayerSpec`	Specific layer to put polygon geometry on.	`'PAD'`
`centered`	`bool`	True sets center to (0, 0), False sets south-west to (0, 0).	`False`
`port_type`	`str \| None`	optical, electrical.	`None`
`port_orientations`	`Ints \| None`	list of port_orientations to add. None adds no ports.	`(180, 90, 0, -90)`

:noindex:

rectangle

import cspdk

c = cspdk.si220.cband.cells.rectangle(size=(4, 2), layer='PAD', centered=False, port_orientations=(180, 90, 0, -90)).copy()
c.draw_ports()
c.plot()

ring_double¶

Returns a double bus ring.

two couplers (ct: top, cb: bottom) connected with two vertical straights (sl: left, sr: right)

Parameters:

Name	Type	Description	Default
`gap`	`float`	gap between for coupler.	`gap_strip`
`gap_top`	`float \| None`	gap for the top coupler. Defaults to gap.	`None`
`gap_bot`	`float \| None`	gap for the bottom coupler. Defaults to gap.	`None`
`radius`	`float`	for the bend and coupler.	`10.0`
`length_x`	`float`	ring coupler length.	`0.01`
`length_y`	`float`	vertical straight length.	`0.01`
`bend`		90 degrees bend spec.	required
`straight`		straight spec.	required
`coupler_ring`		ring coupler spec.	required
`coupler_ring_top`		top ring coupler spec. Defaults to coupler_ring.	required
`cross_section`	`CrossSectionSpec`	cross_section spec.	`'strip'`
`length_extension`	`float`	straight length extension at the end of the coupler bottom ports.	`10.0`

:noindex:

ring_double

import cspdk

c = cspdk.si220.cband.cells.ring_double(gap=0.27, radius=10, length_x=0.01, length_y=0.01, cross_section='strip', length_extension=10).copy()
c.draw_ports()
c.plot()

ring_single¶

Returns a single ring.

ring coupler (cb: bottom) connects to two vertical straights (sl: left, sr: right), two bends (bl, br) and horizontal straight (wg: top)

Parameters:

Name	Type	Description	Default
`gap`	`float`	gap between for coupler.	`gap_strip`
`radius`	`float`	for the bend and coupler.	`10.0`
`length_x`	`float`	ring coupler length.	`4.0`
`length_y`	`float`	vertical straight length.	`0.6`
`cross_section`	`CrossSectionSpec`	cross_section spec.	`'strip'`
`length_extension`	`float`	straight length extension at the end of the coupler bottom ports.	`10.0`
`bend`	`ComponentSpec`	bend type for the ring. Defaults to "bend_euler".	`'bend_euler'`
`p`	`float`	percentage of the bend that is euler. 1 means full euler, 0 means full circular.	`0`

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      xx                              xx▲
      xx                              xx│length_y
      xx                              xx▼
      xx                             xx
       xx          length_x          x
        xx     ◄───────────────►    x
         xx                       xxx
           xx                   xxx
            xxx──────▲─────────xxx
                     │gap
             o1──────▼─────────o2

:noindex:

ring_single

import cspdk

c = cspdk.si220.cband.cells.ring_single(gap=0.27, radius=10, length_x=4, length_y=0.6, cross_section='strip', length_extension=10, bend='bend_euler', p=0).copy()
c.draw_ports()
c.plot()

spiral¶

Returns a spiral double (spiral in, and then out).

Parameters:

Name	Type	Description	Default
`length`	`float`	length of the spiral straight section.	`100`
`cross_section`	`CrossSectionSpec`	cross_section component.	`'strip'`
`spacing`	`float`	spacing between the spiral loops.	`3`
`n_loops`	`int`	number of loops.	`6`

:noindex:

spiral

import cspdk

c = cspdk.si220.cband.cells.spiral(length=100, cross_section='strip', spacing=3, n_loops=6).copy()
c.draw_ports()
c.plot()

spiral_racetrack¶

Returns Racetrack-Spiral.

Parameters:

Name	Type	Description	Default
`min_radius`	`float \| None`	smallest radius in um.	`None`
`straight_length`	`float`	length of the straight segments in um.	`20.0`
`spacings`	`Floats`	space between the center of neighboring waveguides in um.	`(2, 2, 3, 3, 2, 2)`
`straight`	`ComponentSpec`	factory to generate the straight segments.	`'straight'`
`bend`	`ComponentSpec`	factory to generate the bend segments.	`'bend_euler'`
`bend_s`	`ComponentSpec`	factory to generate the s-bend segments.	`'bend_s'`
`cross_section`	`CrossSectionSpec`	cross-section of the waveguides.	`'strip'`
`cross_section_s`	`CrossSectionSpec \| None`	cross-section of the s bend waveguide (optional).	`None`
`extra_90_deg_bend`	`bool`	if True, we add an additional straight + 90 degree bent at the output, so the output port is looking down.	`False`
`allow_min_radius_violation`	`bool`	if True, will allow the s-bend to have a smaller radius than the minimum radius.	`False`

:noindex:

spiral_racetrack

import cspdk

c = cspdk.si220.cband.cells.spiral_racetrack(straight_length=20, spacings=(2, 2, 3, 3, 2, 2), straight='straight', bend='bend_euler', bend_s='bend_s', cross_section='strip', extra_90_deg_bend=False, allow_min_radius_violation=False).copy()
c.draw_ports()
c.plot()

spiral_racetrack_heater¶

Returns spiral racetrack with a heater above.

based on https://doi.org/10.1364/OL.400230 .

Parameters:

Name	Type	Description	Default
`spacing`	`float`	center to center spacing between the waveguides.	`4.0`
`num`	`int`	number of spiral loops.	`8`
`straight_length`	`float`	length of the straight segments.	`100`
`cross_section`	`CrossSectionSpec`	cross_section.	`'strip'`

:noindex:

spiral_racetrack_heater

import cspdk

c = cspdk.si220.cband.cells.spiral_racetrack_heater(spacing=4, num=8, straight_length=100, cross_section='strip').copy()
c.draw_ports()
c.plot()

straight¶

Returns a Straight waveguide.

Parameters:

Name	Type	Description	Default
`length`	`float`	straight length (um).	`10`
`cross_section`	`CrossSectionSpec`	specification (CrossSection, string or dict).	`'strip'`
`width`	`float \| None`	width of the waveguide. If None, it will use the width of the cross_section.	`None`
`npoints`	`int`	number of points.	`2`

:noindex:

straight

import cspdk

c = cspdk.si220.cband.cells.straight(length=10, cross_section='strip', npoints=2).copy()
c.draw_ports()
c.plot()

straight_heater_meander¶

Returns a meander based heater.

based on SungWon Chung, Makoto Nakai, and Hossein Hashemi, Low-power thermo-optic silicon modulator for large-scale photonic integrated systems Opt. Express 27, 13430-13459 (2019) https://www.osapublishing.org/oe/abstract.cfm?URI=oe-27-9-13430

Parameters:

Name	Type	Description	Default
`length`	`float`	phase shifter length.	`320.0`
`heater_width`	`float`	width of the heater.	`2.5`
`spacing`	`float`	waveguide spacing (center to center).	`2`
`cross_section`	`CrossSectionSpec`	for waveguide.	`'strip'`
`layer_heater`	`LayerSpec`	for top heater, if None, it does not add a heater.	`'HEATER'`
`via_stack`	`ComponentSpec \| None`	for the heater to via_stack metal.	`'via_stack_heater_mtop'`
`n`	`int \| None`	number of meanders.	`3`
`port_orientation1`	`float \| None`	orientation of the first port. None for all orientations.	`90`
`port_orientation2`	`float \| None`	orientation of the second port. None for all orientations.	`90`
`radius`	`float \| None`	radius of the meander.	`None`

:noindex:

straight_heater_meander

import cspdk

c = cspdk.si220.cband.cells.straight_heater_meander(length=320, heater_width=2.5, spacing=2, cross_section='strip', layer_heater='HEATER', via_stack='via_stack_heater_mtop', n=3, port_orientation1=90, port_orientation2=90).copy()
c.draw_ports()
c.plot()

straight_heater_metal¶

Returns a thermal phase shifter.

dimensions from https://doi.org/10.1364/OE.27.010456

Parameters:

Name	Type	Description	Default
`length`	`float`	phase shifter length.	`320.0`
`length_undercut_spacing`	`float`	spacing between the waveguide and the undercut.	`6.0`
`length_undercut`	`float`	undercut length.	`30.0`
`length_straight`	`float`	straight length.	`0.1`
`length_straight_input`	`float`	straight length input.	`15.0`
`with_undercut`	`bool`	isolation trenches for higher efficiency.	`False`
`port_orientation1`	`int \| None`	orientation of the first port. None for all orientations.	`90`
`port_orientation2`	`int \| None`	orientation of the second port. None for all orientations.	`90`

:noindex:

straight_heater_metal

import cspdk

c = cspdk.si220.cband.cells.straight_heater_metal(length=320, length_undercut_spacing=6, length_undercut=30, length_straight=0.1, length_straight_input=15, with_undercut=False, port_orientation1=90, port_orientation2=90).copy()
c.draw_ports()
c.plot()

straight_metal¶

Returns a Straight waveguide.

Parameters:

Name	Type	Description	Default
`length`	`float`	straight length (um).	`10`
`cross_section`	`CrossSectionSpec`	specification (CrossSection, string or dict).	`'metal_routing'`
`width`	`float \| None`	width of the waveguide. If None, it will use the width of the cross_section.	`None`

:noindex:

straight_metal

import cspdk

c = cspdk.si220.cband.cells.straight_metal(length=10, cross_section='metal_routing').copy()
c.draw_ports()
c.plot()

straight_rib¶

Returns a Straight waveguide.

Parameters:

Name	Type	Description	Default
`length`	`float`	straight length (um).	`10`
`cross_section`	`CrossSectionSpec`	specification (CrossSection, string or dict).	`'rib'`
`width`	`float \| None`	width of the waveguide. If None, it will use the width of the cross_section.	`None`

:noindex:

straight_rib

import cspdk

c = cspdk.si220.cband.cells.straight_rib(length=10, cross_section='rib').copy()
c.draw_ports()
c.plot()

straight_strip¶

Returns a Straight waveguide.

Parameters:

Name	Type	Description	Default
`length`	`float`	straight length (um).	`10`
`cross_section`	`CrossSectionSpec`	specification (CrossSection, string or dict).	`'strip'`
`width`	`float \| None`	width of the waveguide. If None, it will use the width of the cross_section.	`None`
`npoints`	`int`	number of points.	`2`

:noindex:

straight_strip

import cspdk

c = cspdk.si220.cband.cells.straight_strip(length=10, cross_section='strip', npoints=2).copy()
c.draw_ports()
c.plot()

taper¶

Linear taper, which tapers only the main cross section section.

Parameters:

Name	Type	Description	Default
`length`	`float`	taper length.	`10.0`
`width1`	`float`	width of the west/left port.	`width`
`width2`	`float \| None`	width of the east/right port. Defaults to width1.	`None`
`cross_section`	`CrossSectionSpec`	specification (CrossSection, string, CrossSectionFactory dict).	`'strip'`

:noindex:

taper

import cspdk

c = cspdk.si220.cband.cells.taper(length=10, width1=0.45, cross_section='strip').copy()
c.draw_ports()
c.plot()

taper_metal¶

Linear taper, which tapers only the main cross section section.

Parameters:

Name	Type	Description	Default
`length`	`float`	taper length.	`10.0`
`width1`	`float`	width of the west/left port.	`width_metal`
`width2`	`float \| None`	width of the east/right port. Defaults to width1.	`None`
`cross_section`	`CrossSectionSpec`	specification (CrossSection, string, CrossSectionFactory dict).	`'metal_routing'`

:noindex:

taper_metal

import cspdk

c = cspdk.si220.cband.cells.taper_metal(length=10, width1=10, cross_section='metal_routing').copy()
c.draw_ports()
c.plot()

taper_strip_to_ridge¶

A taper between strip and ridge.

This is a transition between two distinct cross sections

Parameters:

Name	Type	Description	Default
`length`	`float`	the length of the taper.	`10.0`
`width1`	`float`	the input width of the taper.	`0.5`
`width2`	`float`	the output width of the taper.	`0.5`
`w_slab1`	`float`	the input slab width of the taper.	`0.2`
`w_slab2`	`float`	the output slab width of the taper.	`10.45`
`cross_section`	`CrossSectionSpec`	a cross section or its name or a function generating a cross section.	`'strip'`

:noindex:

taper_strip_to_ridge

import cspdk

c = cspdk.si220.cband.cells.taper_strip_to_ridge(length=10, width1=0.5, width2=0.5, w_slab1=0.2, w_slab2=10.45, cross_section='strip').copy()
c.draw_ports()
c.plot()

text_rectangular¶

Pixel based font, guaranteed to be manhattan, without acute angles.

Parameters:

Name	Type	Description	Default
`text`	`str`	string.	`'abc'`
`size`	`float`	pixel size.	`3`
`justify`	`str`	left, right or center.	`'left'`
`layer`	`LayerSpec`	for text.	`'PAD'`

:noindex:

text_rectangular

import cspdk

c = cspdk.si220.cband.cells.text_rectangular(text='abc', size=3, justify='left', layer='PAD').copy()
c.draw_ports()
c.plot()

text_rectangular_multi_layer¶

Returns rectangular text in different layers.

Parameters:

Name	Type	Description	Default
`text`	`str`	string of text.	`'abc'`
`layers`	`LayerSpecs`	list of layers to replicate the text.	`('WG', 'PAD')`
`text_factory`	`ComponentSpec`	function to create the text Components.	`'text_rectangular'`
`kwargs`	`Any`	keyword arguments for text_factory.	`{}`

:noindex:

text_rectangular_multi_layer

import cspdk

c = cspdk.si220.cband.cells.text_rectangular_multi_layer(text='abc', layers=('WG', 'PAD'), text_factory='text_rectangular').copy()
c.draw_ports()
c.plot()

trans_rib10¶

:noindex:

trans_rib10

import cspdk

c = cspdk.si220.cband.cells.trans_rib10(length=10, width1=0.5, width2=0.5, w_slab1=0.2, w_slab2=10.45, cross_section='strip').copy()
c.draw_ports()
c.plot()

trans_rib20¶

:noindex:

trans_rib20

import cspdk

c = cspdk.si220.cband.cells.trans_rib20(length=20, width1=0.5, width2=0.5, w_slab1=0.2, w_slab2=10.45, cross_section='strip').copy()
c.draw_ports()
c.plot()

trans_rib50¶

:noindex:

trans_rib50

import cspdk

c = cspdk.si220.cband.cells.trans_rib50(length=50, width1=0.5, width2=0.5, w_slab1=0.2, w_slab2=10.45, cross_section='strip').copy()
c.draw_ports()
c.plot()

via_stack_heater_mtop¶

Rectangular via array stack.

You can use it to connect different metal layers or metals to silicon. You can use the naming convention via_stack_layerSource_layerDestination contains 4 ports (e1, e2, e3, e4)

also know as Via array http://www.vlsi-expert.com/2017/12/vias.html

Parameters:

Name	Type	Description	Default
`size`	`Size`	of the layers.	`(20.0, 10.0)`

:noindex:

via_stack_heater_mtop

import cspdk

c = cspdk.si220.cband.cells.via_stack_heater_mtop(size=(20, 10)).copy()
c.draw_ports()
c.plot()

wire_corner¶

Returns 45 degrees electrical corner wire.

Parameters:

Name	Type	Description	Default
`cross_section`	`CrossSectionSpec`	spec.	`'metal_routing'`
`width`	`float \| None`	optional width. Defaults to cross_section width.	`None`
`radius`	`float \| None`	ignored.	`None`

:noindex:

wire_corner

import cspdk

c = cspdk.si220.cband.cells.wire_corner(cross_section='metal_routing').copy()
c.draw_ports()
c.plot()

wire_corner45¶

Returns 90 degrees electrical corner wire.

Parameters:

Name	Type	Description	Default
`cross_section`	`CrossSectionSpec`	spec.	`'metal_routing'`
`radius`	`float`	in um.	`10`
`width`	`float \| None`	optional width. Defaults to cross_section width.	`None`
`layer`	`LayerSpec \| None`	optional layer.	`None`
`with_corner90_ports`	`bool`	if True, adds ports at 90 degrees.	`True`

:noindex:

wire_corner45

import cspdk

c = cspdk.si220.cband.cells.wire_corner45(cross_section='metal_routing', radius=10, with_corner90_ports=True).copy()
c.draw_ports()
c.plot()

wire_corner45_straight¶

Returns 90 degrees electrical corner wire.

Parameters:

Name	Type	Description	Default
`width`	`float \| None`	of the wire.	`None`
`radius`	`float \| None`	of the corner. Defaults to width.	`None`
`cross_section`	`CrossSectionSpec`	metal_routing.	`'metal_routing'`

:noindex:

wire_corner45_straight

import cspdk

c = cspdk.si220.cband.cells.wire_corner45_straight(cross_section='metal_routing').copy()
c.draw_ports()
c.plot()

Cells Si SOI 220nm Cband¶

add_fiber_array¶

add_fiber_single¶

add_pads_top¶

bend_euler¶

bend_metal¶

bend_s¶

bend_s_metal¶

compass¶

coupler¶

coupler_rib¶

coupler_ring¶

crossing¶

crossing_rib¶

die¶

die_with_pads¶

compass(size=(4, 2), layer='PAD', port_type=None, port_inclusion=0.0, port_orientations=(180, 90, 0, -90), auto_rename_ports=True) ¶

die(size=(16000.0, 1 * 3000.0)) ¶

die_with_pads(size=(11470.0, 4900.0), ngratings=14, npads=31, grating_pitch=250.0, pad_pitch=300.0, grating_coupler='grating_coupler_rectangular', cross_section='strip', pad='pad', layer_floorplan='FLOORPLAN', edge_to_pad_distance=150.0, edge_to_grating_distance=150.0, with_loopback=True) ¶

pad(size=(90.0, 90.0), layer='PAD', port_inclusion=0, port_orientation=0) ¶

rectangle(size=(4, 2), layer='PAD', centered=False, port_type=None, port_orientations=(180, 90, 0, -90)) ¶

grating_coupler_elliptical¶

grating_coupler_rectangular¶

grating_coupler_rectangular_rib¶

heater¶

mmi1x2¶

mmi1x2_rib¶

mmi2x2¶

mmi2x2_rib¶

mzi¶

pack_doe¶

pack_doe_grid¶

pad¶

rectangle¶

ring_double¶

ring_single¶

spiral¶

spiral_racetrack¶

spiral_racetrack_heater¶

straight¶

straight_heater_meander¶

straight_heater_metal¶

straight_metal¶

straight_rib¶

straight_strip¶

taper¶

taper_metal¶

taper_strip_to_ridge¶

text_rectangular¶

text_rectangular_multi_layer¶

trans_rib10¶

trans_rib20¶

trans_rib50¶

via_stack_heater_mtop¶

wire_corner¶

wire_corner45¶

wire_corner45_straight¶

`compass(size=(4, 2), layer='PAD', port_type=None, port_inclusion=0.0, port_orientations=(180, 90, 0, -90), auto_rename_ports=True)` ¶

`die(size=(16000.0, 1 * 3000.0))` ¶

`die_with_pads(size=(11470.0, 4900.0), ngratings=14, npads=31, grating_pitch=250.0, pad_pitch=300.0, grating_coupler='grating_coupler_rectangular', cross_section='strip', pad='pad', layer_floorplan='FLOORPLAN', edge_to_pad_distance=150.0, edge_to_grating_distance=150.0, with_loopback=True)` ¶

`pad(size=(90.0, 90.0), layer='PAD', port_inclusion=0, port_orientation=0)` ¶

`rectangle(size=(4, 2), layer='PAD', centered=False, port_type=None, port_orientations=(180, 90, 0, -90))` ¶