gdsfactory.routing.route_bundle

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gdsfactory.routing.route_bundle#

gdsfactory.routing.route_bundle(component: Component, ports1: list[Port] | Port, ports2: list[Port] | Port, cross_section: CrossSectionSpec | None = None, layer: LayerSpecs | None = None, separation: float = 3.0, bend: ComponentSpec = 'bend_euler', sort_ports: bool = False, start_straight_length: float = 0, end_straight_length: float = 0, min_straight_taper: float = 100, taper: ComponentSpec | None = None, port_type: str | None = None, collision_check_layers: LayerSpecs | None = None, on_collision: str | None = 'show_error', bboxes: list[kf.kdb.Box] | None = None, allow_width_mismatch: bool = False, radius: float | None = None, route_width: float | list[float] | None = None, straight: ComponentSpec = <function straight>, auto_taper: bool = True, waypoints: Coordinates | None = None, steps: Sequence[Mapping[str, int | float]] | None = None, start_angles: int | list[int] | None = None, end_angles: int | list[int] | None = None) → list[ManhattanRoute][source]#

Places a bundle of routes to connect two groups of ports.

Routes connect a bundle of ports with a river router. Chooses the correct routing function depending on port angles.

Parameters:

  • component – component to add the routes to.

  • ports1 – list of starting ports.

  • ports2 – list of end ports.

  • cross_section – CrossSection or function that returns a cross_section.

  • layer – layer to use for the route.

  • separation – bundle separation (center to center). Defaults to cross_section.width + cross_section.gap

  • bend – function for the bend. Defaults to euler.

  • sort_ports – sort port coordinates.

  • start_straight_length – straight length at the beginning of the route. If None, uses default value for the routing CrossSection.

  • end_straight_length – end length at the beginning of the route. If None, uses default value for the routing CrossSection.

  • min_straight_taper – minimum length for tapering the straight sections.

  • taper – function for the taper. Defaults to None.

  • port_type – type of port to place. Defaults to optical.

  • collision_check_layers – list of layers to check for collisions.

  • on_collision – action to take on collision. Defaults to show_error.

  • bboxes – list of bounding boxes to avoid collisions.

  • allow_width_mismatch – allow different port widths.

  • radius – bend radius. If None, defaults to cross_section.radius.

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

  • straight – function for the straight. Defaults to straight.

  • auto_taper – if True, auto-tapers ports to the cross-section of the route.

  • waypoints – list of waypoints to add to the route.

  • steps – list of steps to add to the route.

  • start_angles – list of start angles for the routes. Only used for electrical ports.

  • end_angles – list of end angles for the routes. Only used for electrical ports.

import gdsfactory as gf

dy = 200.0
xs1 = [-500, -300, -100, -90, -80, -55, -35, 200, 210, 240, 500, 650]

pitch = 10.0
N = len(xs1)
xs2 = [-20 + i * pitch for i in range(N // 2)]
xs2 += [400 + i * pitch for i in range(N // 2)]

a1 = 90
a2 = a1 + 180

ports1 = [gf.Port(f"top_{i}", center=(xs1[i], +0), width=0.5, orientation=a1, layer=(1,0)) for i in range(N)]
ports2 = [gf.Port(f"bot_{i}", center=(xs2[i], dy), width=0.5, orientation=a2, layer=(1,0)) for i in range(N)]

c = gf.Component()
gf.routing.route_bundle(c, ports1, ports2)
c.plot()

(Source code)

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