通过判断版图端口的domain.name，可以知道端口是电端口还是光端口：
如：

可以通过如下代码获取两个电端口（anode和cathode）的信息：

from si_fab import all as pdk


def get_electrical_ports(layout):
    ports = layout.ports
    electrical_ports = []
    for port in ports:
        if port.domain.__name__ == 'ElectricalDomain':
            electrical_ports.append(port)
    return electrical_ports


phase_shfter = pdk.PhaseShifterWaveguide()
phase_shfter_lv = phase_shfter.Layout()
phase_shfter_lv.visualize(annotate=True)
electrical_ports = get_electrical_ports(phase_shfter_lv)
for x, port in enumerate(electrical_ports):
    print("The name of electrical port_{} is: {}".format(x, port.name))
    print("The position of electrical port_{} is: {}".format(x, port.position))
    print("The angle of electrical port_{}  is: {}".format(x, port.angle))
    print("The layer of electrical port_{}  is: {}".format(x, port.layer))
    print("The trace template of electrical port_{}  is: {}".format(x, port.trace_template.name))

得到所有电端口electrical_ports 后，就可以输入端口名称、端口位置、端口角度、端口图层、端口迹线横截面等信息：