DoubleSpiralWithInCoupling

class picazzo3.wg.spirals.cell.DoubleSpiralWithInCoupling(*args, **kwargs)

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.

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

Layout
Parameters:

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.

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

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

grid: float and number > 0, locked

design grid. Extracted by default from TECH.METRICS.GRID

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 DoubleSpiralWithInCoupling
from ipkiss3 import all as i3

cell = DoubleSpiralWithInCoupling(n_o_loops=3, trace_template=i3.TECH.PCELLS.WG.DEFAULT)
layout = cell.Layout(inner_size=(30.0, 30.0),
                     incoupling_length=10.0,
                     spacing=5)

layout.visualize()
../../../../_images/picazzo3-wg-spirals-cell-DoubleSpiralWithInCoupling-1.png