FaML layouts

DFT.md

@@ -0,0 +1,27 @@
+
+# Design for Test rules
+
+- All design submissions must follow the Design for Test (DFT) rules. Two optical interfaces are available: surface grating couplers (GC), and facet-attached micro-lenses (FaML)
+
+## Grating Couplers
+
+- 127 µm pitch, verically aligned, single column, connected circuits
+- up to 4 grating couplers
+- opt_in label format: opt_in_TE_1550_device_designerUniqueIndentifier
+- opt_in label location: the tip (0,0) of the grating coupler cell at the input
+- Fiber Array test consists of: 
+  - 1 (top GC): output, to detector
+  - 2: input, laser
+  - 3: output, to detector
+  - 4 (bottom GC): output, to detector
+
+## Facet-attached Micro-Lenses (FaML)
+
+- 127 µm pitch, verically aligned, single column, connected circuits
+- up to 3 lenses
+- opt_in label format: opt_in_TE_1550_FaML_designerUniqueIndentifier
+- opt_in label location: the lens and chip edge (0,0) of the FaML cell at the input
+- Fiber Array test consists of: 
+  - 1 (top FaML): input, laser
+  - 2 (middle FaML): output, to detector
+  - 3 (bottom FaML): output, to detector

submissions/KLayout Python/EBeam_LukasChrostowski_MZI1_1550_FaML.py

@@ -0,0 +1,104 @@
+'''
+--- Simple MZI, 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, limited a design area of 1000 microns wide by 410 microns high.
+ - create one Mach-Zehnder Interferometer (MZI) circuit with a small path length difference
+ - export to OASIS for submission to fabrication
+ - display the layout in KLayout using KLive
+ 
+ Test plan
+ - count lenses from the top (top is 1)
+ - laser input on top lens (1), detector on second (2) 
+
+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_MZI1_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
+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_MZI1 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
+'''    
+cell, ly = new_layout(tech_name, top_cell_name, GUI=True, overwrite = True)
+floorplan(cell, 250e3, 244e3)
+
+waveguide_type1='SiN Strip TE 1550 nm, w=750 nm'
+waveguide_type_delay='SiN routing TE 1550 nm (compound waveguide)'
+
+# Load cells from library
+cell_ebeam_y = ly.create_cell('ANT_MMI_1x2_te1550_3dB_BB',  'EBeam-SiN')
+
+#######################
+# Circuit #1 – MZI
+#######################
+# draw two edge couplers for facet-attached micro-lenses
+inst_faml = FaML_two(cell, 
+         label = "opt_in_TE_1550_FaML_mzi1_%s" % designer_name,
+         )    
+# Y branches:
+instY2 = connect_cell(inst_faml[0], 'opt1', cell_ebeam_y, 'pin1')
+instY1 = connect_cell(inst_faml[1], 'opt1', cell_ebeam_y, 'pin1')
+# Waveguides: 
+connect_pins_with_waveguide(instY1, 'pin2', instY2, 'pin3', waveguide_type=waveguide_type1)
+connect_pins_with_waveguide(instY1, 'pin3', instY2, 'pin2', waveguide_type=waveguide_type1, turtle_A=[100,-90])
+
+
+# Zoom out
+zoom_out(cell)
+
+# Export for fabrication, removing PCells
+path = os.path.dirname(os.path.realpath(__file__))
+filename, extension = os.path.splitext(os.path.basename(__file__))
+if export_type == 'static':
+    file_out = export_layout(cell, path, filename, relative_path = '..', format='oas', screenshot=True)
+else:
+    file_out = os.path.join(path,'..',filename+'.oas')
+    ly.write(file_out)
+
+# Verify
+file_lyrdb = os.path.join(path,filename+'.lyrdb')
+num_errors = layout_check(cell = cell, 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, lyrdb_filename=file_lyrdb, technology=tech_name)

submissions/KLayout Python/EBeam_LukasChrostowski_MZI_1550_FaML.py → submissions/KLayout Python/EBeam_LukasChrostowski_MZI2_1550_FaML.py

@@ -30,7 +30,7 @@
 '''
 
 designer_name = 'LukasChrostowski'
-top_cell_name = 'EBeam_%s_MZI_FaML' % designer_name
+top_cell_name = 'EBeam_%s_MZI2_FaML' % designer_name
 export_type = 'static'  # static: for fabrication, PCell: include PCells in file
 #export_type = 'PCell'  # static: for fabrication, PCell: include PCells in file
 
@@ -40,7 +40,7 @@
 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
+from SiEPIC.utils.layout import new_layout, floorplan, FaML_two
 from SiEPIC.extend import to_itype
 from SiEPIC.verification import layout_check
 
@@ -50,7 +50,7 @@
     # For external Python mode, when installed using pip install siepic_ebeam_pdk
     import siepic_ebeam_pdk
 
-print('EBeam_LukasChrostowski_MZI layout script')
+print('EBeam_LukasChrostowski_MZI2 layout script')
 
 tech_name = 'EBeam'
 
@@ -64,7 +64,7 @@
 and Draw the floor plan
 '''    
 cell, ly = new_layout(tech_name, top_cell_name, GUI=True, overwrite = True)
-floorplan(cell, 1000e3, 695e3)
+floorplan(cell, 1000e3, 244e3)
 
 dbu = ly.dbu
 
@@ -73,55 +73,26 @@
 waveguide_type_delay='SiN routing TE 1550 nm (compound waveguide)'
 
 # Load cells from library
-cell_ebeam_faml = ly.create_cell('ebeam_dream_FaML_SiN_1550_BB', 'EBeam-Dream', 
-                                 {'num_channels':4})
 cell_ebeam_y = ly.create_cell('ANT_MMI_1x2_te1550_3dB_BB',  'EBeam-SiN')
-
-#######################
-# Circuit #1 – Loopback
-#######################
-# lens cell includes loopback on the bottom two channels
-y_offset = 284e3
-x,y = 0, y_offset
-t = Trans(Trans.R0,x,y)
-inst_faml = cell.insert(CellInstArray(cell_ebeam_faml.cell_index(), t))
-# automated test label
-x,y = 0, -127e3*2 + y_offset
-text = Text ("opt_in_TE_1550_device_%s_loopback_faml" % designer_name, t)
-cell.shapes(ly.layer(ly.TECHNOLOGY['Text'])).insert(text).text_size = 5/dbu
-
-#######################
-# Circuit #2 – MZI
-#######################
-# automated test label
-x,y = 0, y_offset
-text = Text ("opt_in_TE_1550_device_%s_mzi_faml" % designer_name, t)
-cell.shapes(ly.layer(ly.TECHNOLOGY['Text'])).insert(text).text_size = 5/dbu
-# Y branches:
-instY1 = connect_cell(inst_faml, 'opt1', cell_ebeam_y, 'pin1')
-instY2 = connect_cell(inst_faml, 'opt2', cell_ebeam_y, 'pin1')
-# Waveguides: 
-connect_pins_with_waveguide(instY1, 'pin2', instY2, 'pin3', waveguide_type=waveguide_type1)
-connect_pins_with_waveguide(instY1, 'pin3', instY2, 'pin2', waveguide_type=waveguide_type1, turtle_A=[100,-90])
-
-#######################
-# Circuit #3 - MZI, with a very long delay line
-#######################
 cell_ebeam_delay = ly.create_cell('spiral_paperclip', 'EBeam_Beta',
                                 {'waveguide_type':waveguide_type_delay,
-                                'length':315,
+                                'length':319,
                                 'loops':8,
                                 'flatten':True})
-# automated test label
-x,y = 0, 127e3*2 + y_offset
-text = Text ("opt_in_TE_1550_device_%s_mzi2_faml" % designer_name, t)
-cell.shapes(ly.layer(ly.TECHNOLOGY['Text'])).insert(text).text_size = 5/dbu
+
+#######################
+# Circuit #2 – MZI, with a very long delay line
+#######################
+# draw two edge couplers for facet-attached micro-lenses
+inst_faml = FaML_two(cell, 
+         label = "opt_in_TE_1550_FaML_mzi2_%s" % designer_name,
+         )    
 # Y branches:
-instY1 = connect_cell(inst_faml, 'opt3', cell_ebeam_y, 'pin1')
-instY2 = connect_cell(inst_faml, 'opt4', cell_ebeam_y, 'pin1')
+instY2 = connect_cell(inst_faml[0], 'opt1', cell_ebeam_y, 'pin1')
+instY1 = connect_cell(inst_faml[1], 'opt1', cell_ebeam_y, 'pin1')
 # Spiral:
 instSpiral = connect_cell(instY2, 'pin2', cell_ebeam_delay, 'optA')
-instSpiral.transform(Trans(110e3,0))
+instSpiral.transform(pya.Trans(110e3,50e3))
 # Waveguides:
 connect_pins_with_waveguide(instY1, 'pin2', instY2, 'pin3', waveguide_type=waveguide_type1)
 connect_pins_with_waveguide(instY2, 'pin2', instSpiral, 'optA', waveguide_type=waveguide_type1)