gdsfactory.routing.add_pads_top

Returns new component with ports connected top pads.

Parameters

• component – component spec to connect to.

• select_ports – function to select_ports.

• port_names – optional port names. Overrides select_ports.

• cross_section – cross_section spec.

• get_input_labels_function – function to get input labels. None skips labels.

• layer_label – optional layer for grating coupler label.

• pad_port_name – pad input port name.

• pad_port_labels – pad list of labels.

• pad – spec for route terminations.

• bend – bend spec.

• straight_separation – from wire edge to edge. Defaults to xs.width+xs.gap

• pad_pitch – in um. Defaults to pad_pitch constant from the PDK.

• port_type – port type.

• allow_width_mismatch – True

• fanout_length – if None, automatic calculation of fanout length.

• route_width – width of the route. If None, defaults to cross_section.width.

• bboxes – list of bounding boxes to avoid.

• avoid_component_bbox – True

• auto_taper – adds tapers to the routing.

• kwargs – additional arguments.

Keyword Arguments

• straight – straight spec.

• get_input_label_text_loopback_function – function to get input label test.

• get_input_label_text_function – for labels.

• max_y0_optical – in um.

• with_loopback – True, adds loopback structures.

• list_port_labels – None, adds TM labels to port indices in this list.

• connected_port_list_ids – names of ports only for type 0 optical routing.

• nb_optical_ports_lines – number of grating coupler lines.

• force_manhattan – False

• excluded_ports – list of port names to exclude when adding gratings.

• grating_indices – list of grating coupler indices.

• routing_straight – function to route.

• routing_method – route_single.

• gc_rotation – fiber coupler rotation in degrees. Defaults to -90.

• input_port_indexes – to connect.

• allow_width_mismatch – True

import gdsfactory as gf
c = gf.c.nxn(
    xsize=600,
    ysize=200,
    north=2,
    south=3,
    wg_width=10,
    layer="M3",
    port_type="electrical",
)
cc = gf.routing.add_pads_top(component=c, port_names=("e1", "e4"), fanout_length=50)
cc.plot()