Examples
Ring Coupler
Build and export a coupled ring resonator with an integrated heater.
This example creates a RingCoupled device with a 20 µm radius, a 0.2 µm coupling gap, and a heater. The device is placed into a top-level cell with the same Placer API used by the straight-waveguide example.
Code
Run this snippet from the repository root after installing the workspace packages:
from pathlib import Path
import laylight
from laylight.render import export_layout_png, new_layout
from laylight.structure.ring import RingCoupled
layout, top, tech = new_layout("RING_COUPLER_EXAMPLE")
device = RingCoupled(
radius=20,
width=0.5,
gap=0.2,
with_heater=True,
layout=layout,
tech=tech,
)
laylight.Placer(device).into(top)
output_dir = Path("build/examples")
output_dir.mkdir(parents=True, exist_ok=True)
layout.write(str(output_dir / "ring_coupler.gds"))
export_layout_png(
layout,
output_dir / "ring_coupler.png",
cell=top,
max_pixels=960,
)The code writes both ring_coupler.gds and ring_coupler.png to build/examples.
Rendered layout
The lower curved path is the ring. The upper straight path is the bus waveguide, and the square structures are the heater contacts.