Rectangular ring filter with two straight access waveguide. This component is often called a channel drop filter. The access waveguides are placed south and east of the Ring, at 90 degree angles.
The ring shape is a rounded rectangle of which the bend radius can be specified, as well as the horizontal and vertical straight sections. it is also possible to specify the rounding algorithm of the bends.
The waveguide template of the ring and the couplers can be chosen independently.
coupler_trace_templates: List with type restriction, allowed types: <class ‘ipkiss3.pcell.cell.pcell.PCell’>
list of trace_templates for the ring couplers. By default the same template as the ring is taken
ring_trace_template: PCell and _WaveguideTemplate
Trace template for the ring waveguide
couplers: List with type restriction, allowed types: <class ‘ipkiss3.pcell.cell.pcell.PCell’>
list of coupler PCells
ring_segments: List with type restriction, allowed types: <class ‘ipkiss3.pcell.cell.pcell.PCell’>
list of Ring PCells
The unique name of the pcell
ring_trace_templates: List with type restriction, allowed types: <class ‘ipkiss3.pcell.cell.pcell.PCell’>, locked
Trace templates for the ring segments. Locked, as there is only one segment in this Ring. Use ‘ring_trace_template’ instead.
angle_step: float and number > 0
Angle step for rounding.
coupler_lengths: list<number >= 0>
straight lengths of the coupling section. By default, same lengths as the ring will be used
Parameters for the couplers. This is a list of dicts, and the length of the list should be the same as the number of couplers
manhattan: ( bool, bool_, bool or int )
Adds rectangular blocks in the bends to avoid as much as possible non-manhattan angles.
view_name: str and ( Alphanumeric string or Contains _$ )
The name of the view
additional length of the couplers. By default, the couplers will be extended to the size of the ring.
coupler_offsets: list<Real, number>
list of offsets of the ring couplers along the centerline
coupler_spacings: list<Real, number>
list of centerline-to-centerline spacings of the ring couplers.When negative, the ring and coupler waveguide will cross, which ispossible when the ring traces template and the coupler trace templateare on different process layers (vertical couplers)
Translation of the shape.
area_layer_on: ( bool, bool_, bool or int )
When True, the Ring area will be covered by i3.Rectangles on all cover layers of the ring waveguide template.
list of coupler transformations
bend_radius: float and number > 0
Bend radius for the auto-generated bends.
Rounding algorithm used to generate the bends. Can be circular, spline, ….
Shapes of the ring segments. Locked, as there is only 1 ring segment. Use ‘shape’ instead
from technologies import silicon_photonics from ipkiss3 import all as i3 from picazzo3.filters.ring import RingRect90DropFilter from picazzo3.traces.wire_wg.trace import WireWaveguideTemplate wg1_t = WireWaveguideTemplate(name="wg_template_9") wg1_t.Layout(core_width=0.5) wg2_t = WireWaveguideTemplate(name="wg_template_10") wg2_t.Layout(core_width=0.4) wg3_t = WireWaveguideTemplate(name="wg_template_11") wg3_t.Layout(core_width=0.6) ring = RingRect90DropFilter(name="my_rect90dropring", ring_trace_template=wg1_t, coupler_trace_templates=[wg2_t, wg3_t]) # In a list!!! layout = ring.Layout(coupler_spacings=[0.65, 0.70], # This results in a 200nm and 250nm gap straights=(i3.TECH.WG.SHORT_STRAIGHT,i3.TECH.WG.SHORT_STRAIGHT+3.0)) layout.visualize(annotate=True)