gdsfactory.cross�_section.strip�_heater�_metal�_undercut

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

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

sides.

dimensions from Dong et al. (2010)

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()

References¶

Dong, P., Qian, W., Liang, H., Shafiiha, R., Feng, D., Li, G., Cunningham, J. E., Krishnamoorthy, A. V., & Asghari, M. (2010). Thermally tunable silicon racetrack resonators with ultralow tuning power. Optics Express, 18(19), 20298. 10.1364/oe.18.020298

Reference

gdsfactory.cross_section.strip_heater_metal

Reference

gdsfactory.cross_section.strip