update, making things fit, DRC errors fix

framework/loopback_1550_FaML.py

@@ -0,0 +1,108 @@
+'''
+--- Simple Loopback, tested using Facet-Attached Micro Lenses (FaML) ---
+  
+by Lukas Chrostowski, 2024
+   
+Example simple script to
+ - choose the fabrication technology provided by Applied Nanotools,  using silicon nitride (SiN) waveguides
+ - use the SiEPIC-EBeam-PDK technology
+ - using KLayout and SiEPIC-Tools, with function including connect_pins_with_waveguide and connect_cell
+ - create a new layout with a top cell
+ - create as many loopbacks for calibration as will fit
+ - export to OASIS for submission to fabrication
+ - display the layout in KLayout using KLive
+ 
+Use instructions:
+
+Run in Python, e.g., VSCode
+
+pip install required packages:
+ - klayout, SiEPIC, siepic_ebeam_pdk, numpy
+
+'''
+
+designer_name = 'LukasChrostowski'
+top_cell_name = 'EBeam_%s_loopback_FaML' % designer_name
+export_type = 'static'  # static: for fabrication, PCell: include PCells in file
+tech_name = 'EBeam'
+
+import pya
+from pya import *
+
+import SiEPIC
+from SiEPIC._globals import Python_Env
+from SiEPIC.scripts import connect_cell, connect_pins_with_waveguide, zoom_out, export_layout
+from SiEPIC.utils.layout import new_layout, floorplan, FaML_two, coupler_array
+from SiEPIC.extend import to_itype
+from SiEPIC.verification import layout_check
+
+import os
+
+if Python_Env == 'Script':
+    # For external Python mode, when installed using pip install siepic_ebeam_pdk
+    import siepic_ebeam_pdk
+
+print('EBeam_LukasChrostowski_loopback layout script')
+
+from packaging import version
+if version.parse(SiEPIC.__version__) < version.parse("0.5.4"):
+    raise Exception("Errors", "This example requires SiEPIC-Tools version 0.5.4 or greater.")
+
+'''
+Create a new layout using the EBeam technology,
+with a top cell
+and Draw the floor plan
+'''    
+topcell, ly = new_layout(tech_name, top_cell_name, GUI=True, overwrite = True)
+
+# subcell
+cell = ly.create_cell('FaML_test')
+height = 2760e3
+floorplan(cell, 200e3, height)
+
+waveguide_type1='SiN Strip TE 1550 nm, w=750 nm'
+
+#######################
+# Circuit – Loopback
+#######################
+
+for i in range(int(height / 2/127e3)+1):
+    # draw two edge couplers for facet-attached micro-lenses
+    inst_faml = coupler_array(cell, 
+            y_offset = i *254e3 + 50e3,
+            cell_name = 'ebeam_dream_FaML_SiN_1550_BB',
+            cell_library = 'EBeam-Dream',
+            label = "opt_in_TE_1550_FaML_loopback",
+            #cell_params = None,
+            count = 2,
+            )    
+    # loopback waveguide
+    connect_pins_with_waveguide(inst_faml[0], 'opt1', inst_faml[1], 'opt1', waveguide_type=waveguide_type1)
+
+t = pya.Trans(pya.Trans.R180,0,0)
+topcell.insert(pya.CellInstArray(cell.cell_index(), t))
+
+
+# Zoom out
+zoom_out(topcell)
+
+# Export for fabrication, removing PCells
+thisfilepath = os.path.dirname(os.path.realpath(__file__))
+filename, extension = os.path.splitext(os.path.basename(__file__))
+if export_type == 'static':
+    file_out = export_layout(topcell, thisfilepath, filename, relative_path = '', format='oas', screenshot=True)
+else:
+    file_out = os.path.join(thisfilepath, '',filename+'.oas')
+    ly.write(file_out)
+
+'''
+# Verify
+file_lyrdb = os.path.join(thisfilepath, filename+'.lyrdb')
+num_errors = layout_check(cell = topcell, verbose=False, GUI=True, file_rdb=file_lyrdb)
+print('Number of errors: %s' % num_errors)
+'''
+
+# Display the layout in KLayout, using KLayout Package "klive", which needs to be installed in the KLayout Application
+if Python_Env == 'Script':
+    from SiEPIC.utils import klive
+    klive.show(file_out, technology=tech_name)

merge/EBeam_merge.py

@@ -137,8 +137,7 @@ def log(text):
 files_in_alphabetical = []
 for f in sorted(files):
     if '.oas' in f.lower() or '.gds' in f.lower():
-        # print(f, path2)
-        if 'FaML' not in f:
+        if 'FaML' not in f and 'FAVE' not in f:
             fpath = os.path.join(path2,f)
             layout2 = pya.Layout()
             layout2.read(fpath)
@@ -150,6 +149,22 @@ def log(text):
 for f in sorted(files_in_alphabetical, key = lambda x: x[0]):
     files_in.append(os.path.join(path2,f[1]))
 
+# Then all FAVE designs
+files_in_alphabetical = []
+for f in sorted(files):
+    if '.oas' in f.lower() or '.gds' in f.lower():
+        if 'FAVE' in f:
+            fpath = os.path.join(path2,f)
+            layout2 = pya.Layout()
+            layout2.read(fpath)
+            top_cells = layout2.top_cells()
+            top_cells.sort(key=lambda x: x.child_instances())
+            w = top_cells[-1].bbox().width()
+            files_in_alphabetical.append ([w,fpath])
+# Then sort the designs by cell width
+for f in sorted(files_in_alphabetical, key = lambda x: -x[0]):
+    files_in.append(os.path.join(path2,f[1]))
+
 
 # Create course cells using the folder name under the top cell
 cell_edXphot1x = layout.create_cell("edX")
@@ -314,6 +329,20 @@ def log(text):
             # bounding box of the cell
             bbox = cell.bbox()
             log('  - bounding box: %s' % bbox.to_s() )
+
+            # Check that the design submission has a FloorPlan. If not, add one
+            layerinfo_FP = pya.LayerInfo(99,0)
+            Layer_FP = layout2.layer(layerinfo_FP)  # or use "layer"
+            r3 = pya.Region(cell.begin_shapes_rec(Layer_FP))
+            if r3.is_empty():
+                print('  - WARNING: Cell %s did not have a Floor Plan, %s' % (cell.name, f) )
+                log('  - WARNING: Cell %s did not have a Floor Plan, %s' % (cell.name, f) )
+                if 'FAVE' in f:
+                    # add extra space on the left
+                    print('  - Adding extra FloorPlan space to FAVE cell'  )
+                    bbox.left = bbox.left - 22e3
+                    # bbox = pya.Box(bbox.left - 22e3, bbox.bottom, bbox.right, bbox.top)
+                cell.shapes(Layer_FP).insert(bbox)
 
             # Create sub-cell under subcell cell, using user's cell name
             subcell = layout.create_cell(cell.name)
@@ -341,15 +370,7 @@ def log(text):
                 r1.insert(iter1.shape().polygon.transformed(iter1.trans())) 
                 iter1.next()        
             r1.merge()
-
-            # Check that the design submission has a FloorPlan. If not, add one
-            Layer_FP = layout.find_layer(99,0)  # or use "layer"
-            r3 = pya.Region(subcell.begin_shapes_rec(Layer_FP))
-            if r3.is_empty():
-                print('  - WARNING: Cell %s did not have a Floor Plan, %s' % (subcell.name, f) )
-                log('  - WARNING: Cell %s did not have a Floor Plan, %s' % (subcell.name, f) )
-                subcell.shapes(Layer_FP).insert(subcell.bbox())
-
+
             # offset for the facet-attached micro lenses
             if course == 'FaML':
                 x_offset = -100e3

submissions/KLayout Python/EBeam_LukasChrostowski_MZI_1550_FAVE.py

@@ -76,7 +76,7 @@
 # draw two edge couplers for facet-attached vertical emitters
 inst_fave = FaML_two(cell, 
          label = "opt_in_TE_1550_FAVE_loopback_%s" % designer_name,
-         x_offset = 211e3,
+         x_offset = 210e3 + 22e3,
          y_offset = 59.5e3,
          cell_name = "ebeam_dream_FAVE_SiN_1550_BB",
          cell_params = None,
@@ -90,7 +90,7 @@
 # draw two edge couplers for facet-attached vertical emitters
 inst_fave = FaML_two(cell, 
          label = "opt_in_TE_1550_FAVE_MZI1_%s" % designer_name,
-         x_offset = 211e3+275e3,
+         x_offset = 210e3+275e3 + 22e3,
          y_offset = 59.5e3,
          cell_name = "ebeam_dream_FAVE_SiN_1550_BB",
          cell_params = None,
@@ -107,13 +107,13 @@
 #######################
 cell_ebeam_delay = ly.create_cell('spiral_paperclip', 'EBeam_Beta',
                                 {'waveguide_type':waveguide_type_delay,
-                                'length':261,
+                                'length':250,
                                 'loops':8,
                                 'flatten':True})
 # draw two edge couplers for facet-attached micro-lenses
 inst_fave = FaML_two(cell, 
          label = "opt_in_TE_1550_FAVE_MZI2_%s" % designer_name,
-         x_offset = 211e3,
+         x_offset = 210e3 + 22e3,
          y_offset = 59.5e3+254e3,
          cell_name = "ebeam_dream_FAVE_SiN_1550_BB",
          cell_params = None,