from __future__ import annotations
import gdsfactory as gf
from gdsfactory import cell
from gdsfactory.component import Component
from gdsfactory.components.grating_coupler_elliptical_trenches import grating_coupler_te
from gdsfactory.routing.route_single import route_single
from gdsfactory.typings import ComponentSpec, CrossSectionSpec
[docs]
@cell
def loss_deembedding_ch13_24(
pitch: float = 127.0,
grating_coupler: ComponentSpec = "grating_coupler_te",
cross_section: CrossSectionSpec = "strip",
port_name: str = "o1",
rotation: float = -90,
yspacing: float | None = None,
**kwargs,
) -> Component:
"""Grating coupler test structure for fiber array.
Connects channel 1->3, 2->4
Args:
pitch: um.
grating_coupler: spec.
cross_section: spec.
port_name: for the grating_coupler port.
rotation: degrees.
yspacing: um.
kwargs: cross_section settings.
"""
gc = gf.get_component(grating_coupler)
c = gf.Component()
dx = pitch
gc_ports = []
for i in range(4):
g = c << gc
g.drotate(rotation)
g.dmovex(i * dx)
gc_ports.append(g.ports[port_name])
route_single(
c,
gc_ports[0],
gc_ports[2],
start_straight_length=40.0,
cross_section=cross_section,
**kwargs,
)
x = gf.get_cross_section(cross_section, **kwargs)
radius = x.radius
p1 = gc_ports[1]
p3 = gc_ports[3]
yspacing = yspacing or gc.dysize + 2 * radius
bend90 = gf.components.bend_euler(cross_section=cross_section, **kwargs)
points = gf.kf.routing.optical.route_loopback(
p1,
p3,
bend90_radius=round(radius / c.kcl.dbu),
d_loop=round(yspacing / c.kcl.dbu),
)
route_single(
c,
port1=p1,
port2=p3,
waypoints=points,
bend=bend90,
straight=gf.components.straight,
cross_section=cross_section,
**kwargs,
)
return c
[docs]
@cell
def loss_deembedding_ch12_34(
pitch: float = 127.0,
grating_coupler: ComponentSpec = "grating_coupler_te",
port_name: str = "o1",
cross_section: CrossSectionSpec = "strip",
rotation: float = -90,
**kwargs,
) -> Component:
"""Grating coupler test structure for fiber array.
Connects channel 1->2, 3->4
Args:
pitch: um.
grating_coupler: spec.
port_name: for the grating_coupler port.
cross_section: spec.
rotation: degrees.
kwargs: cross_section settings.
Keyword Args:
kwargs: cross_section settings.
"""
gc = gf.get_component(grating_coupler)
c = gf.Component()
dx = pitch
gc_ports = []
for i in range(4):
g = c << gc
g.drotate(rotation)
g.dmove((i * dx, 0))
gc_ports.append(g.ports[port_name])
route_single(
c,
gc_ports[0],
gc_ports[1],
start_straight_length=40.0,
cross_section=cross_section,
**kwargs,
)
route_single(
c,
gc_ports[2],
gc_ports[3],
start_straight_length=40.0,
cross_section=cross_section,
**kwargs,
)
return c
[docs]
@cell
def loss_deembedding_ch14_23(
pitch: float = 127.0,
grating_coupler: ComponentSpec = "grating_coupler_te",
cross_section: CrossSectionSpec = "strip",
port_name: str = "o1",
rotation: float = -90,
**kwargs,
) -> Component:
"""Grating coupler test structure for fiber array.
Connects channel 1->4, 2->3
Args:
pitch: um.
grating_coupler: spec.
cross_section: spec.
port_name: for the grating_coupler port.
rotation: degrees.
kwargs: cross_section settings.
Keyword Args:
kwargs: cross_section settings.
"""
gc = gf.get_component(grating_coupler)
c = gf.Component()
dx = pitch
gc_ports = []
for i in range(4):
g = c << gc
g.drotate(rotation)
g.dmove((i * dx, 0))
gc_ports.append(g.ports[port_name])
route_single(
c,
gc_ports[0],
gc_ports[3],
start_straight_length=40.0,
cross_section=cross_section,
**kwargs,
)
route_single(
c,
gc_ports[1],
gc_ports[2],
start_straight_length=30.0,
cross_section=cross_section,
**kwargs,
)
return c
[docs]
@cell
def grating_coupler_loss_fiber_array(
pitch: float = 127.0,
grating_coupler: ComponentSpec = "grating_coupler_te",
port_name: str = "o1",
cross_section: CrossSectionSpec = "strip",
rotation: float = -90,
**kwargs,
) -> Component:
"""Returns Grating coupler fiber array loopback.
Args:
pitch: spacing.
grating_coupler: spec for grating coupler.
port_name: for the grating_coupler port.
cross_section: spec.
rotation: degrees.
kwargs: cross_section settings.
Keyword Args:
kwargs: cross_section settings.
"""
gc = gf.get_component(grating_coupler)
c = gf.Component()
dx = pitch
gc_ports = []
for i in range(2):
g = c << gc
g.drotate(rotation)
g.dmove((i * dx, 0))
gc_ports.append(g.ports[port_name])
route_single(
c,
gc_ports[0],
gc_ports[1],
start_straight_length=40.0,
cross_section=cross_section,
**kwargs,
)
return c
[docs]
@cell
def grating_coupler_loss_fiber_array4(
pitch: float = 127.0, grating_coupler: ComponentSpec = grating_coupler_te, **kwargs
) -> Component:
"""Returns a grating coupler test structure for fiber array.
Measures all combinations for a 4 fiber fiber_array
Connects channel 1->3, 2->4
Connects channel 1->4, 2->3
Connects channel 1->2, 3->4
Args:
pitch: grating_coupler_pitch.
grating_coupler: function.
kwargs: cross_section settings.
"""
c = gf.Component()
c1 = loss_deembedding_ch13_24(grating_coupler=grating_coupler, **kwargs)
c2 = loss_deembedding_ch14_23(grating_coupler=grating_coupler, **kwargs)
c3 = loss_deembedding_ch12_34(grating_coupler=grating_coupler, **kwargs)
c.add_ref(c1)
c2 = c.add_ref(c2)
c3 = c.add_ref(c3)
c2.dmovex(pitch * 4)
c3.dmovex(pitch * 8)
return c
if __name__ == "__main__":
# c = loss_deembedding_ch14_23()
# c = loss_deembedding_ch12_34()
c = loss_deembedding_ch13_24()
# c = grating_coupler_loss_fiber_array4()
# c = grating_coupler_loss_fiber_array4(layer=(2, 0), radius=30)
# c = grating_coupler_loss_fiber_array4(cross_section="rib")
# c = grating_coupler_loss_fiber_array(layer=(2, 0), radius=30)
# c = grating_coupler_loss_fiber_array()
c.show()
