Making a building block from GDS
How to make a building from GDS file
# example created by Bright Photonics import nazca as nd with nd.Cell(name='mmi_bb') as mmi_bb: # load GDS BB mmi = nd.load_gds( filename='mmi_bb.gds', cellname='mmi' ) mmi.put() # Add Pins nd.Pin('a0', width=2).put(0, 0, 180) nd.Pin('b0', width=2).put(40, 2.5, 0) nd.Pin('b1', width=2).put(40, -2.5, 0) bb = mmi_bb.put(0) # connect to mmi Pin 'b0' and 'b1' nd.bend(angle=90, width=2, layer=1).put(bb.pin['b0']) nd.bend(angle=-90, width=2, layer=1).put(bb.pin['b1']) nd.export_gds()
In this example we show how to load a MMI GDS building block and add Pins ‘a0’, ‘b0’ and ‘b1’ to the block. Having the Pins set at the input and output ports of the MMI, it is easy to connect to this building block and draw the layout.
We can also add stubs and the boundary around the MMI to better visualize the component.
# example created by Bright Photonics import nazca as nd with nd.Cell(name='mmi_bb') as mmi_bb: # load GDS BB mmi = nd.load_gds( filename='mmi_bb.gds', cellname='mmi' ) mmi.put() # Add Pins nd.Pin('a0', width=2).put(0, 0, 180) nd.Pin('b0', width=2).put(40, 2.5, 0) nd.Pin('b1', width=2).put(40, -2.5, 0) # Put stubs nd.put_stub() # Put boundary around the mmi bb nd.put_boundingbox('org', length=40, width=10) bb = mmi_bb.put(0) # connect to mmi Pin 'b0' and 'b1' nd.bend(angle=90, width=2, layer=1).put(bb.pin['b0']) nd.bend(angle=-90, width=2, layer=1).put(bb.pin['b1']) nd.export_gds()