gdsfactory.cross_section.strip_heater_metal_undercut

gdsfactory.cross_section.strip_heater_metal_undercut(width: float = 0.5, layer: LayerSpec = 'WG', heater_width: float = 2.5, trench_width: float = 6.5, trench_gap: float = 2.0, layer_heater: LayerSpec = 'HEATER', layer_trench: LayerSpec = 'DEEPTRENCH', sections: tuple[Section, ...] | None = None, **kwargs) → CrossSection

Returns strip cross_section with top metal and undercut trenches on both.

sides.

dimensions from https://doi.org/10.1364/OE.18.020298

Parameters:

• width – waveguide width.

• layer – waveguide layer.

• heater_width – of metal heater.

• trench_width – in um.

• trench_gap – from waveguide edge to trench edge.

• layer_heater – heater layer.

• layer_trench – tench layer.

• sections – cross_section sections.

• kwargs – cross_section settings.

|<-------heater_width--------->|
 ______________________________
|                              |
|         layer_heater         |
|______________________________|

     |<------width------>|
      ____________________ trench_gap
     |                   |<----------->|              |
     |                   |             |   undercut   |
     |       width       |             |              |
     |                   |             |<------------>|
     |___________________|             | trench_width |
                                       |              |
                                       |              |

import gdsfactory as gf

xs = gf.cross_section.strip_heater_metal_undercut(width=0.5, heater_width=2, trench_width=4, trench_gap=4)
p = gf.path.arc(radius=10, angle=45)
c = p.extrude(xs)
c.plot()

(Source code, png, hires.png, pdf)