WgBend90

class picazzo3.wg.bend.cell.WgBend90(*args, **kwargs)

Fixed Waveguide bend of 90 degrees. This is a rounded waveguide, so it takes a rounding algorithm and a bend radius as a parameter, as well as a trace_template.

Parameters:

trace_template: PCell and _WaveguideTemplate

external_port_names:

Dictionary for remapping of the port names of the contents to the external ports

name:

The unique name of the pcell

Other Parameters:  

contents: PCell and _Trace, locked

Views

Layout

Parameters:

angle_step: float and number > 0

Angle step for rounding.

clockwise: ( bool, bool_, bool or int )

clockwise or counterclockwise propagation. By default it is calculated from ‘quadrant’

control_shape_layer: __Layer__

layer on which the control shape is drawn

cover_layers: List with type restriction, allowed types: <class ‘ipkiss.primitives.layer.Layer’>

layers that can be used to generate additional coverage of the trace (e.g. manhattan corners)

draw_control_shape: ( bool, bool_, bool or int )

draws the control shape on top of the waveguide

manhattan: ( bool, bool_, bool or int )

Adds rectangular blocks in the bends to avoid as much as possible non-manhattan angles.

quadrant: int

quadrant on the circle. (-4=>4)positive numbers is counterclockwise, negative numbers is clockwise

start_angle: float

start_angle of the bend. By default it is calculated from ‘quadrant’

view_name: str and ( Alphanumeric string or Contains _$ )

The name of the view

flatten_contents: ( bool, bool_, bool or int )

if True, it will insert the contents as elements in the layout, rather than as an Instance

core_layer: __Layer__

layer used to define the core of the waveguide

bend_radii: list<number > 0>

Bend radius for every individual bend.

remove_straight_angles: ( bool, bool_, bool or int )

Removes the waypoints with straight angles. Set to False if the algorithm uses waypoint-specific information.

reverse_bends: ( bool, bool_, bool or int )

When set to True, it will generate the bends backwards. This has only effect when the bend algorithm is not symmetric.

reverse_individual_bends: list<( bool, bool_, bool or int )>

When set to True, it will generate the individual bends backwards. This has only effect when the bend algorithm is not symmetric. Should have length equal to the shape for closed shapes, but equal to shape-2 for open shapes.

rounding_algorithms:

Rounding algorithm for every individual bend. Can be circular, spline, … Should have length equal to the shape for closed shapes, but equal to shape-2 for open shapes.

input_port: TracePort

output_port: TracePort

trace_template_for_ports: _TraceTemplate.Layout

Trace template to be used for the ports.

shape: Shape

Shape from which the Trace is calculated

contents_transformation: GenericNoDistortTransform

bend_radius: float and number > 0

Bend radius for the auto-generated bends.

rounding_algorithm:

Rounding algorithm used to generate the bends. Can be circular, spline, ….

Other Parameters:  

angle: locked

angle of the bend (locked at 90 degrees)

center_line_shape: locked

Automatically calculated shape of the center line of the trace

Examples

from technologies import silicon_photonics
from picazzo3.wg.bend import WgBend90
from picazzo3.traces.wire_wg.trace import WireWaveguideTemplate
import ipkiss3.all as i3
wg_t = WireWaveguideTemplate()
wg_t.Layout(core_width= 0.550,
            cladding_width=i3.TECH.WG.CLADDING_WIDTH,
            core_process=i3.TECH.PROCESS.WG)
C = WgBend90(trace_template=wg_t)
layout = C.Layout(quadrant=-3,
                  bend_radius=20.0)
layout.visualize(annotate=True)