PhaseShifterWaveguideTemplate

class picazzo3.modulators.phase.trace.PhaseShifterWaveguideTemplate

Generic phase shifter waveguide trace template. When extruded into a (straight) waveguide, this template draws the necessary implant, contact and metallization layers on top of the underlying waveguide template. This waveguide template should be specified in the “trace_template” property.

This PCell can be used for several types of phase shifters, for example: * P(I)N junction injection or depletion phase shifters, with P and N implants, contacts and metal on two sides * Thermal phase shifters using a metal heater on top * Thermal phase shifters using an implanted waveguide

At the Layout level, windows can be specified separately for the implants (the silicon level), contacts (pre-metal/contact level) and the metallization (e.g. metal1 level). Just fill or leave open each of the three sets of windows, and use them to implement the desired type of phase shifter.

Subclass this PCell to create specialized phase shifters, and add electrical ports.

Parameters:

trace_template: PCell and _TraceTemplate

Refers to the other trace template from which information is taken to build this trace template.

name: String that contains only ISO/IEC 8859-1 (extended ASCII py3) or pure ASCII (py2) characters

The unique name of the pcell

Views

class Layout

Parameters:

metal_windows: List with type restriction, allowed types: <class ‘ipkiss3.pcell.trace.window.window._TraceWindow’>

List of Trace Windows for the metallization layers

contact_windows: List with type restriction, allowed types: <class ‘ipkiss3.pcell.trace.window.window._TraceWindow’>

List of Trace Windows for the contacts

implant_windows: List with type restriction, allowed types: <class ‘ipkiss3.pcell.trace.window.window._TraceWindow’>

List of Trace Windows for the implant layers

windows_for_ports: List with type restriction, allowed types: <class ‘ipkiss3.pcell.trace.window.window._TraceWindow’>

List of Trace Windows from which ports will be generated

core_width: float and number > 0

width of the waveguide core

core_layer: __Layer__

layer used to define the core of the waveguide

flatten_contents: ( bool, bool_ or int )

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

pin_shape: Shape

shape to be used for the pins

trace_template_for_ports: _TraceTemplate.Layout

Trace template to be used for the ports. Default = this template

windows: List with type restriction, allowed types: <class ‘ipkiss3.pcell.trace.window.window._TraceWindow’>

List of Trace Windows to draw on top of the already defined TraceTemplate

keep_original_trace_template: ( bool, bool_ or int )

width: float and Real, number and number >= 0

control_shape_layer: __Layer__

layer on which the control shape is drawn

draw_control_shape: ( bool, bool_ or int )

draws the control shape on top of the waveguide

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)

view_name: String that contains only alphanumeric characters from the ASCII set or contains _$. ASCII set is extended on PY3.

The name of the view

Examples

import si_fab.all as pdk  # noqa: F401
import ipkiss3.all as i3
from picazzo3.modulators.phase import PhaseShifterWaveguideTemplate
from picazzo3.traces.rib_wg import RibWaveguideTemplate
from picazzo3.electrical.contact import ContactHole

wire_t = RibWaveguideTemplate()
wire_t.Layout(core_width=0.9, cladding_width=2 * i3.TECH.WG.TRENCH_WIDTH + 0.9)

c = ContactHole(name="PNPS_CONT")
c.Layout()

contact_windows = [
    i3.PeriodicArrayReferenceTraceWindow(
        reference=c, offset=-4.0 - 2.5 * i, exclude_ends=(0.5 * 3.0, 0.5 * 3.0), pitch=3.0
    )
    for i in range(3)
]

contact_windows += [
    i3.PeriodicArrayReferenceTraceWindow(
        reference=c, offset=4.0 + 2.5 * i, exclude_ends=(0.5 * 3.0, 0.5 * 3.0), pitch=3.0
    )
    for i in range(3)
]

implant_windows = [
    i3.PathTraceWindow(layer=i3.TECH.PPLAYER.P, start_offset=0.0, end_offset=10.0),
    i3.PathTraceWindow(layer=i3.TECH.PPLAYER.N, start_offset=0.0, end_offset=-10.0),
]

metal_windows = [
    i3.PathTraceWindow(layer=i3.TECH.PPLAYER.M1, start_offset=3.0, end_offset=12.0),
    i3.PathTraceWindow(layer=i3.TECH.PPLAYER.M1, start_offset=-3.0, end_offset=-12.0),
]

ps_t = PhaseShifterWaveguideTemplate(trace_template=wire_t)
ps_t.Layout(contact_windows=contact_windows, implant_windows=implant_windows, metal_windows=metal_windows)

ps = ps_t(name="TestPhaseShifterWaveguideTemplate1")
ps_lay = ps.Layout(shape=[(0.0, 0.0), (50.0, 0.0)])
ps_lay.visualize(annotate=True)

import si_fab.all as pdk  # noqa: F401
import ipkiss3.all as i3
from picazzo3.modulators.phase import PhaseShifterWaveguideTemplate
from picazzo3.traces.rib_wg import RibWaveguideTemplate

wire_t = RibWaveguideTemplate()
wire_t.Layout(core_width=0.9, cladding_width=2 * i3.TECH.WG.TRENCH_WIDTH + 0.9)

metal_windows = [i3.PathTraceWindow(layer=i3.TECH.PPLAYER.M1, start_offset=-1.0, end_offset=1.0)]

ps_t = PhaseShifterWaveguideTemplate(trace_template=wire_t)
ps_t.Layout(metal_windows=metal_windows)

ps = ps_t(name="TestPhaseShifterWaveguideTemplate2")
ps_lay = ps.Layout(shape=[(0.0, 0.0), (50.0, 0.0)])
ps_lay.visualize(annotate=True)