gdsfactory.cross_section.pn_with_trenches_asymmetric

gdsfactory.cross_section.pn_with_trenches_asymmetric#

gdsfactory.cross_section.pn_with_trenches_asymmetric(width=0.5, layer='WG', layer_trench='DEEP_ETCH', gap_low_doping=(0.0, 0.0), gap_medium_doping=(0.5, 0.2), gap_high_doping=(1.0, 0.8), width_doping=8.0, slab_offset=0.3, width_slab=None, width_trench=2.0, layer_p='P', layer_pp='PP', layer_ppp='PPP', layer_n='N', layer_np='NP', layer_npp='NPP', layer_via=None, width_via=1.0, layer_metal=None, width_metal=1.0, port_names=('o1', 'o2'), cladding_layers=None, cladding_offsets=None, wg_marking_layer=None, sections=None, **kwargs)[source]#

Rib PN doped cross_section with asymmetric dimensions left and right.

Parameters:

  • width (float) – width of the ridge in um.

  • layer (tuple[int, int] | str | int | LayerEnum) – ridge layer. None adds only ridge.

  • layer_trench (tuple[int, int] | str | int | LayerEnum) – layer to etch trenches.

  • gap_low_doping (float | tuple[float, float]) – from waveguide center to low doping. Only used for PIN. If a list, it considers the first element is [p_side, n_side]. If a number, it assumes the same for both sides.

  • gap_medium_doping (float | tuple[float, float] | None) – from waveguide center to medium doping. None removes it. If a list, it considers the first element is [p_side, n_side]. If a number, it assumes the same for both sides.

  • gap_high_doping (float | tuple[float, float] | None) – from center to high doping. None removes it. If a list, it considers the first element is [p_side, n_side]. If a number, it assumes the same for both sides.

  • width_doping (float) – in um.

  • slab_offset (float | None) – from the edge of the trench to the edge of the slab.

  • width_slab (float | None) – in um.

  • width_trench (float) – in um.

  • layer_p (tuple[int, int] | str | int | LayerEnum | None) – p doping layer.

  • layer_pp (tuple[int, int] | str | int | LayerEnum | None) – p+ doping layer.

  • layer_ppp (tuple[int, int] | str | int | LayerEnum | None) – p++ doping layer.

  • layer_n (tuple[int, int] | str | int | LayerEnum | None) – n doping layer.

  • layer_np (tuple[int, int] | str | int | LayerEnum | None) – n+ doping layer.

  • layer_npp (tuple[int, int] | str | int | LayerEnum | None) – n++ doping layer.

  • layer_via (tuple[int, int] | str | int | LayerEnum | None) – via layer.

  • width_via (float) – via width in um.

  • layer_metal (tuple[int, int] | str | int | LayerEnum | None) – metal layer.

  • width_metal (float) – metal width in um.

  • port_names (tuple[str, str]) – input and output port names.

  • cladding_layers (Sequence[tuple[int, int]] | None) – optional list of cladding layers.

  • cladding_offsets (Sequence[float] | None) – optional list of cladding offsets.

  • wg_marking_layer (tuple[int, int] | str | int | LayerEnum | None) – layer to draw over the actual waveguide.

  • sections (tuple[Section, ...] | None) – optional list of sections.

  • kwargs (Any) – cross_section settings.

Return type:

CrossSection

                            gap_low_doping[1]
                              <------>
                             |       |
                            wg     junction
                          center   center           slab_offset
                             |       |               <------>
 _____         ______________|_______ ______         ________
      |        |             |       |     |         |       |
      |________|             |             |_________|       |
            P                |       |               N       |
        width_p              |                    width_n    |
   <-------------------------------->|<--------------------->|
      <------->              |               |       N+      |
     width_trench            |               |    width_n    |
                             |               |<------------->|
                             |<------------->|
                             gap_medium_doping[1]
<------------------------------------------------------------>
                         width_slab

import gdsfactory as gf

xs = gf.cross_section.pn_with_trenches_assymmetric(width=0.5, gap_low_doping=0, width_doping=2.)
p = gf.path.arc(radius=10, angle=45)
c = p.extrude(xs)
c.plot()

(Source code)

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