Layout

All UBC ubcpdk.components cells are conveniently combined into the ubcpdk.components module.

import gdsfactory as gf

import ubcpdk.components as uc

Fixed Component cells

Most ubcpdk components are imported from GDS files as fixed cells.

c = uc.ebeam_crossing4()
c.plot()

c = uc.ebeam_swg_edgecoupler()
c.plot()

c = uc.ebeam_bdc_te1550()
c.plot()

c = uc.ebeam_adiabatic_te1550()
c.plot()

c = uc.ebeam_y_adiabatic()
c.plot()

c = uc.ebeam_y_1550()
c.plot()

Parametric Component PCells

You can also define cells adapted from gdsfactory generic pdk.

c = uc.straight(length=2)
c.plot()

c = uc.bend(radius=5)
c.plot()

c = uc.ring_with_crossing()
c.plot()

c = uc.dbr()
c.plot()

/usr/local/lib/python3.11/site-packages/gdsfactory/pdk.py:447: UserWarning: {'width': 0.45} are ignored for cross_section 'xs_c8b8e980'
  warnings.warn(
/usr/local/lib/python3.11/site-packages/gdsfactory/pdk.py:447: UserWarning: {'width': 0.55} are ignored for cross_section 'xs_c8b8e980'
  warnings.warn(

c = uc.spiral()
c.plot()

c = uc.mzi_heater()
c.plot()

c = uc.ring_single_heater()
c.plot()

Components with grating couplers

To test your devices you can add grating couplers. Both for single fibers and for fiber arrays.

splitter = uc.ebeam_y_1550()
mzi = gf.components.mzi(splitter=splitter)
mzi.plot()

component_fiber_array = uc.add_fiber_array(component=mzi, fanout_length=5)
component_fiber_array.plot()

c = uc.ring_single_heater()
c = uc.add_fiber_array_pads_rf(c)
c.plot()

c = uc.mzi_heater()
c = uc.add_fiber_array_pads_rf(c)
c.plot()

3D rendering

scene = c.to_3d()
scene.show()

Die assembly

from functools import partial

import gdsfactory as gf

import ubcpdk.components as uc
from ubcpdk.tech import LAYER

size = (440, 470)
add_gc = uc.add_fiber_array


@gf.cell
def EBeam_JoaquinMatres_1() -> gf.Component:
    """Add DBR cavities."""
    e = [add_gc(uc.straight())]
    e += [add_gc(uc.mzi(delta_length=dl)) for dl in [9.32, 93.19]]
    e += [
        add_gc(uc.ring_single(radius=12, gap=gap, length_x=coupling_length))
        for gap in [0.2]
        for coupling_length in [2.5, 4.5, 6.5]
    ]

    e += [
        uc.dbr_cavity_te(w0=w0, dw=dw)
        for w0 in [0.5]
        for dw in [50e-3, 100e-3, 150e-3, 200e-3]
    ]
    e += [add_gc(uc.ring_with_crossing())]
    e += [add_gc(uc.ring_with_crossing(port_name="o2", with_component=False))]

    c = gf.Component()
    _ = c << gf.pack(e, max_size=size, spacing=2)[0]
    _ = c << gf.components.rectangle(size=size, layer=LAYER.FLOORPLAN)
    return c


c = EBeam_JoaquinMatres_1()
c.show()  # show in klayout
c.plot()  # plot in notebook

/usr/local/lib/python3.11/site-packages/gdsfactory/pdk.py:447: UserWarning: {'width': 0.476} are ignored for cross_section 'xs_c8b8e980'
  warnings.warn(
/usr/local/lib/python3.11/site-packages/gdsfactory/pdk.py:447: UserWarning: {'width': 0.524} are ignored for cross_section 'xs_c8b8e980'
  warnings.warn(
/usr/local/lib/python3.11/site-packages/gdsfactory/pdk.py:447: UserWarning: {'width': 0.424} are ignored for cross_section 'xs_c8b8e980'
  warnings.warn(
/usr/local/lib/python3.11/site-packages/gdsfactory/pdk.py:447: UserWarning: {'width': 0.576} are ignored for cross_section 'xs_c8b8e980'
  warnings.warn(
/usr/local/lib/python3.11/site-packages/gdsfactory/pdk.py:447: UserWarning: {'width': 0.4} are ignored for cross_section 'xs_c8b8e980'
  warnings.warn(
/usr/local/lib/python3.11/site-packages/gdsfactory/pdk.py:447: UserWarning: {'width': 0.6} are ignored for cross_section 'xs_c8b8e980'
  warnings.warn(

def EBeam_JoaquinMatres_2() -> gf.Component:
    """spirals for extracting straight waveguide loss"""

    e = [
        uc.add_fiber_array(component=uc.spiral(n_loops=8, length=length))
        for length in [0, 100, 200]
    ]

    c = gf.Component()
    _ = c << gf.pack(e, max_size=size, spacing=2)[0]
    _ = c << gf.components.rectangle(size=size, layer=LAYER.FLOORPLAN)
    return c


c = EBeam_JoaquinMatres_2()
c.show()  # show in klayout
c.plot()  # plot in notebook

def EBeam_JoaquinMatres_3() -> gf.Component:
    """Contains mirror cavities and structures inside a resonator."""
    e = []
    e += [add_gc(uc.ebeam_crossing4())]
    e += [add_gc(uc.ebeam_adiabatic_te1550())]
    e += [add_gc(uc.ebeam_bdc_te1550())]
    e += [add_gc(uc.ebeam_y_1550())]
    e += [add_gc(uc.straight(), component_name=f"straight_{i}") for i in range(2)]
    c = gf.Component()
    _ = c << gf.pack(e, max_size=size, spacing=2)[0]
    _ = c << gf.components.rectangle(size=size, layer=LAYER.FLOORPLAN)
    return c


c = EBeam_JoaquinMatres_3()
c.show()  # show in klayout
c.plot()  # plot in notebook

def EBeam_JoaquinMatres_4() -> gf.Component:
    """MZI interferometers."""
    mzi = partial(gf.components.mzi, splitter=uc.ebeam_y_1550)
    mzis = [mzi(delta_length=delta_length) for delta_length in [10, 40]]
    mzis_gc = [uc.add_fiber_array(mzi, fanout_length=5) for mzi in mzis]

    mzis = [uc.mzi_heater(delta_length=delta_length) for delta_length in [40]]
    mzis_heater_gc = [uc.add_fiber_array_pads_rf(mzi, orientation=90) for mzi in mzis]

    e = mzis_gc + mzis_heater_gc
    c = gf.Component()
    _ = c << gf.pack(e, max_size=size, spacing=2)[0]
    _ = c << gf.components.rectangle(size=size, layer=LAYER.FLOORPLAN)
    return c


c = EBeam_JoaquinMatres_4()
c.show()  # show in klayout
c.plot()  # plot in notebook

def EBeam_JoaquinMatres_5() -> gf.Component:
    """Ring resonators."""

    rings = []
    for length_x in [4, 6]:
        ring = uc.ring_single_heater(length_x=length_x)
        ring_gc = uc.add_fiber_array_pads_rf(ring, pad_yspacing=10)
        rings.append(ring_gc)

    c = gf.Component()
    _ = c << gf.pack(rings, max_size=size, spacing=2)[0]
    _ = c << gf.components.rectangle(size=size, layer=LAYER.FLOORPLAN)
    return c


c = EBeam_JoaquinMatres_5()
c.show()  # show in klayout
c.plot()  # plot in notebook