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Merge pull request #224 from SiEPIC/FaML
FaML function and tests
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klayout_dot_config/tech/GSiP/pymacros/pcells_GSiP/FaML_Si_1550_BB.py
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,184 @@ | ||
| import pya | ||
| import math | ||
| from SiEPIC._globals import PIN_LENGTH as pin_length | ||
| from SiEPIC.extend import to_itype | ||
| from SiEPIC.scripts import path_to_waveguide, connect_pins_with_waveguide, connect_cell | ||
| from SiEPIC.utils import get_technology_by_name, load_Waveguides_by_Tech, get_layout_variables | ||
|
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| class FaML_Si_1550_BB(pya.PCellDeclarationHelper): | ||
| """ | ||
| The PCell declaration for black box cell | ||
| Facet-attached Micro-Lens (FaML) | ||
| for Silicon | ||
| for 1550 nm operation | ||
| Authors: Dream Photonics | ||
| """ | ||
|
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| def __init__(self): | ||
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| # Important: initialize the super class | ||
| super(FaML_Si_1550_BB, self).__init__() | ||
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| self.technology_name = 'GSiP' | ||
| TECHNOLOGY = get_technology_by_name(self.technology_name) | ||
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| # declare the parameters | ||
| self.param("num_channels", self.TypeInt, "Number of Channels (0 - 16)", default = 2) | ||
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| self.param("ref_wg", self.TypeBoolean, "Include reference waveguide", default=False) | ||
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| #declare the layers | ||
| self.param("silayer", self.TypeLayer, "Si Layer", default = TECHNOLOGY['Si'], hidden=False) | ||
| self.param("pinrec", self.TypeLayer, "PinRec Layer", default = TECHNOLOGY['PinRec'], hidden=True) | ||
| self.param("devrec", self.TypeLayer, "DevRec Layer", default = TECHNOLOGY['DevRec'], hidden=True) | ||
| self.param("fibertarget", self.TypeLayer, "Fiber Target Layer", default=TECHNOLOGY['FbrTgt'], hidden=True) | ||
| self.param("textl", self.TypeLayer, "Text Layer", default=TECHNOLOGY['Text'], hidden=True) | ||
| self.param("bb",self.TypeLayer,"BB Layer", default=TECHNOLOGY['BlackBox'], hidden=True) | ||
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| def can_create_from_shape_impl(self): | ||
| return False | ||
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| def produce(self, layout, layers, parameters, cell): | ||
| # This is the main part of the implementation: create the layout | ||
| self.cell = cell | ||
| self._param_values = parameters | ||
| self.layout = layout | ||
|
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||
| #fetch the parameters | ||
| dbu = self.layout.dbu | ||
| ly = self.layout | ||
| shapes = self.cell.shapes | ||
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| LayerSiN = ly.layer(self.silayer) | ||
| LayerPinRecN = ly.layer(self.pinrec) | ||
| LayerDevRecN = ly.layer(self.devrec) | ||
| LayerFbrTgtN = ly.layer(self.fibertarget) | ||
| LayerTEXTN = ly.layer(self.textl) | ||
| LayerBBN = ly.layer(self.bb) | ||
|
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| num_channels = self.num_channels | ||
| offset = to_itype(0,dbu) | ||
| pitch = to_itype(127,dbu) | ||
| l_taper = 60e3 | ||
| Lw2 = to_itype(15,dbu) | ||
| Lw3 = Lw2 + to_itype(20,dbu) | ||
|
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| wavelength = 1550 | ||
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| waveguide_type = 'Strip' | ||
| w_waveguide = 500 # nm | ||
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| if num_channels < 0: | ||
| num_channels = 0 | ||
| if num_channels > 16: | ||
| num_channels = 16 | ||
|
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| def circle(x,y,r): | ||
| npts = 180 | ||
| theta = 2*math.pi/npts | ||
| pts = [] | ||
| for i in range(0,npts): | ||
| pts.append(pya.Point.from_dpoint(pya.DPoint((x+r*math.cos(i*theta))/1,(y+r*math.sin(i*theta))/1))) | ||
| return pts | ||
|
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||
| #draw one loopback device | ||
| if self.ref_wg: | ||
| for ref_loop in range(2): | ||
| #draw fibre target circle | ||
| align_circle = circle(offset,-pitch*(ref_loop+1),2/dbu) | ||
| #place fibre target circle | ||
| shapes(LayerFbrTgtN).insert(pya.Polygon(align_circle)) | ||
|
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| if self.ref_wg: | ||
| #create waveguide to for loopback | ||
| loopback_path = pya.DPath([pya.DPoint(0,-127),pya.DPoint((offset + l_taper + Lw2)*dbu+15,-127),pya.DPoint((offset + l_taper + Lw2)*dbu+15,-254),pya.DPoint(0,-254)],0.5) | ||
| self.layout.technology_name = self.technology_name #required otherwise "create_cell" doesn't load | ||
| pcell = self.layout.create_cell("Waveguide",self.technology_name,{"path": loopback_path, "waveguide_type": waveguide_type}) | ||
| t = pya.Trans(pya.Trans.R0,0,0) | ||
| self.cell.copy(pcell,LayerSiN,LayerBBN) | ||
| wg = self.cell.insert(pya.CellInstArray(pcell.cell_index(),t)) | ||
| wg.flatten() | ||
| self.cell.clear(LayerDevRecN) | ||
| self.cell.clear(LayerPinRecN) | ||
| self.cell.clear(LayerSiN) | ||
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| ########################################################################################################################################################################## | ||
| #draw N tapers | ||
| x = offset + l_taper + Lw3 | ||
| for n_ch in range(int(num_channels)): | ||
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| #draw the taper | ||
| taper_pts = [pya.Point(0,-w_waveguide/2+pitch*n_ch),pya.Point(0,w_waveguide/2+pitch*n_ch),pya.Point(offset + l_taper + Lw3,w_waveguide/2+pitch*n_ch),pya.Point(offset + l_taper + Lw3,-w_waveguide/2+pitch*n_ch)] | ||
|
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| #place the taper | ||
| shapes(LayerBBN).insert(pya.Polygon(taper_pts)) | ||
|
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| #draw and place pin on the waveguide: | ||
| t = pya.Trans(pya.Trans.R0, x, pitch*n_ch) | ||
| pin = pya.Path([pya.Point(-pin_length/2,0),pya.Point(pin_length/2,0)], w_waveguide) | ||
| pin_t = pin.transformed(t) | ||
| shapes(LayerPinRecN).insert(pin_t) | ||
| text = pya.Text(f"opt{n_ch+1}",t) | ||
| shape = shapes(LayerPinRecN).insert(text) | ||
| shape.text_size = 3/dbu | ||
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| #draw fibre target circle | ||
| align_circle = circle(offset,pitch*n_ch,2/dbu) | ||
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| #place fibre target circle | ||
| shapes(LayerFbrTgtN).insert(pya.Polygon(align_circle)) | ||
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| #draw devrec box | ||
| n_ch = (num_channels-1) | ||
| if self.ref_wg: | ||
| devrec_pts = [pya.Point(0,pitch*n_ch+30/dbu),pya.Point(x,pitch*n_ch+30/dbu),pya.Point(x,-pitch*2-30/dbu),pya.Point(0,-pitch*2-30/dbu)] | ||
| else: | ||
| devrec_pts = [pya.Point(0,pitch*n_ch+30/dbu),pya.Point(x,pitch*n_ch+30/dbu),pya.Point(x,-30/dbu),pya.Point(0,-30/dbu)] | ||
|
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| #place devrec box | ||
| shapes(LayerDevRecN).insert(pya.Polygon(devrec_pts)) | ||
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| #edge of chip text | ||
| t = pya.Trans(pya.Trans.R0,0,1/dbu) | ||
| text = pya.Text("<- Edge of chip",t) | ||
| shape = shapes(LayerTEXTN).insert(text) | ||
| shape.text_size = 3/dbu | ||
|
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||
| #BB description | ||
| t = pya.Trans(pya.Trans.R0,0,-15/dbu) | ||
| text = pya.Text(" Number of Channel(s): " + str(num_channels) + "\n Center Wavelength: " + str(wavelength) + " nm",t) | ||
| shape = shapes(LayerTEXTN).insert(text) | ||
| shape.text_size = 3/dbu | ||
|
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| #BB description | ||
| t = pya.Trans(pya.Trans.R0, 0,-25/dbu) | ||
| text = pya.Text("<- 25 MFD lens",t) | ||
| shape = shapes(LayerTEXTN).insert(text) | ||
| shape.text_size = 3/dbu | ||
|
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| #draw lenses | ||
| width_lens = to_itype(50, dbu) | ||
| length_lens = to_itype(50, dbu) | ||
|
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| if self.ref_wg: | ||
| for n_ch in range(int(num_channels+2)): | ||
| lens_pts = [pya.Point(0,-width_lens/2+pitch*n_ch-2*pitch), pya.Point(0,width_lens/2+pitch*n_ch-2*pitch), pya.Point(-length_lens,width_lens/2+pitch*n_ch-2*pitch),pya.Point(-length_lens,-width_lens/2+pitch*n_ch-2*pitch)] | ||
| shapes(LayerBBN).insert(pya.Polygon(lens_pts)) | ||
| lens = circle(-length_lens,pitch*n_ch-2*pitch,25/dbu) | ||
| shapes(LayerBBN).insert(pya.Polygon(lens)) | ||
| else: | ||
| for n_ch in range(int(num_channels)): | ||
| lens_pts = [pya.Point(0,-width_lens/2+pitch*n_ch), pya.Point(0,width_lens/2+pitch*n_ch), pya.Point(-length_lens,width_lens/2+pitch*n_ch),pya.Point(-length_lens,-width_lens/2+pitch*n_ch)] | ||
| shapes(LayerBBN).insert(pya.Polygon(lens_pts)) | ||
| lens = circle(-length_lens,pitch*n_ch,25/dbu) | ||
| shapes(LayerBBN).insert(pya.Polygon(lens)) | ||
|
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| def display_text_impl(self): | ||
| # Provide a descriptive text for the cell | ||
| return "FaML_Si_1550_BB_%s" % ( | ||
| self.num_channels, | ||
| ) | ||
|
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