def attach_taper(cell : Device , port : Port , length : float , \
width2 : float, layer=LayoutDefault.layerTop) :
t = pg.taper(length=length, width1=port.width, width2=width2, layer=layer)
t_ref = cell.add_ref(t)
t_ref.connect(1, destination=port)
new_port = t_ref.ports[2]
new_port.name = port.name
cell.absorb(t_ref)
cell.remove(port)
cell.add_port(new_port)
def draw(self):
''' Generates layout cell based on current parameters.
'conn' port is included in the cell.
Returns
-------
cell : phidl.Device.
'''
self._check_anchor()
o = self.origin
anchor=pg.rectangle(\
size=(self.size-Point(2*self.etch_margin.x,-2*self.etch_margin.y)).coord,\
layer=self.layer)
etch_size=Point(\
(self.etch_x-self.size.x)/2,\
self.size.y)
offset = Point(self.x_offset, 0)
cell = Device(self.name)
etch_sx=pg.rectangle(\
size=(etch_size-offset).coord,\
layer=self.etch_layer)
etch_dx=pg.rectangle(\
size=(etch_size+offset).coord,\
layer=self.etch_layer)
etch_sx_ref=(cell<<etch_sx).move(origin=(0,0),\
destination=(o-Point(0,self.etch_margin.y)).coord)
anchor_transl = o + Point(etch_sx.size[0] + self.etch_margin.x,
-2 * self.etch_margin.y)
anchor_ref=(cell<<anchor).move(origin=(0,0),\
destination=anchor_transl.coord)
etchdx_transl = anchor_transl + Point(
anchor.size[0] + self.etch_margin.x, +self.etch_margin.y)
etch_dx_ref=(cell<<etch_dx).move(origin=(0,0),\
destination=etchdx_transl.coord)
cell.add_port(name='conn',\
midpoint=(anchor_transl+Point(self.size.x/2-self.etch_margin.x,self.size.y+2*self.etch_margin.y)).coord,\
width=self.metalized.x,\
orientation=90)
if self.etch_choice == True:
cell.absorb(etch_sx_ref)
cell.absorb(anchor_ref)
cell.absorb(etch_dx_ref)
else:
cell.remove(etch_sx_ref)
cell.remove(etch_dx_ref)
del anchor, etch_sx, etch_dx
return cell