DoubleSpiralWithInCouplingRounded¶
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class
picazzo3.wg.spirals.cell.
DoubleSpiralWithInCouplingRounded
(*args, **kwargs)¶ Rounded double spiral class with both access waveguides on the outside of the spiral. In coupling waveguides are added to the spiral, one at the east side and one at the west side. The trace template provided in the property
trace_template
is used to build a chain of waveguides. All the rounding properties can be set at the layout level.Parameters: n_o_loops: int and number > 0, optional
Number of loops in the spiral
trace_template: PCell and _TraceTemplate, optional
Trace template used in the chain.
cell_instances: _PCellInstanceDict, optional
name: optional
The unique name of the pcell
traces: List with type restriction, allowed types: <class ‘ipkiss3.pcell.cell.pcell.PCell’>, locked
n_o_traces: int and number > 0, locked
Total number of traces used in the spiral.
Views
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Layout
¶ Parameters: angle_step: float and number > 0, optional
angle step for rounding
manhattan: optional
adds rectangular blocks in the bends to avoid as much as possible non-manhattan angles
stub_direction: optional
view_name: str, optional
The name of the view
incoupling_length: float and Real, number and number >= 0, optional
length of the incoupling section.
rounding_algorithm: optional
rounding algorithm used to generate the bends. Can be circular, spline, …
inner_size: Coord2, optional
Inner size of the the spiral, defaults to 3 * spacing + 2 * bend_radius, in each direction
spacing: float and Real, number and number >= 0, optional
spacing between the individual loops.
shapes: list, optional
List of shapes used to build the traces
flatten: optional
If true the instances are flattened
bend_radius: float and number > 0, optional
bend radius for the auto-generated bends
grid: float and number > 0, locked
design grid. Extracted by default from TECH.METRICS.GRID
grids_per_unit: locked
Number of grid cells per design unit
units_per_grid: locked
Ratio of grid cell and design unit
spiral_center: locked
auto_transform: locked
unit: float and number > 0, locked
design unit. Extracted by default from TECH.METRICS.UNIT
Examples
from technologies import silicon_photonics from picazzo3.wg.spirals import DoubleSpiralWithInCouplingRounded from ipkiss3 import all as i3 cell = DoubleSpiralWithInCouplingRounded(n_o_loops=3, trace_template=i3.TECH.PCELLS.WG.DEFAULT) layout = cell.Layout(inner_size=(30.0, 30.0), incoupling_length=10.0, bend_radius=3.0, manhattan=False, spacing=5.0) layout.visualize()
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