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297 lines
12 KiB
Python
297 lines
12 KiB
Python
from typing import Optional
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import nazca as nd
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import numpy as np
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import math
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from ...routing import Route
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from ...geometry import *
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from ....technologies import *
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import pandas as pd
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from ...geometry import _my_polygon
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from scipy.interpolate import CubicSpline
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from ...basic import __cell_arg__
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class YBranch:
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"""
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YBranch primitive component.
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This component builds the YBranch layout cell.
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Parameters
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----------
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name : str, optional
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Unique identifier for the device cell. Default is None.
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xs : str, optional
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Layer or cross-section name used by the device. Default is 'strip'.
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w : list or np.ndarray, optional
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Width parameter in microns. Default is [1.2, 1.0, 1.8, 1.2, 1.0, 1.2, 1.2].
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L : float, optional
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Length parameter in microns. Default is 6.
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R_att : float, optional
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Radius parameter in microns. Default is 10.
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A_att : float, optional
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Angle parameter in degrees. Default is 10.
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w_port : float, optional
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Width parameter in microns. Default is 0.45.
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show_pins : bool, optional
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Whether to draw pin markers in the generated layout. Default is False.
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sharp_patch : bool, optional
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Whether to add geometry patches for sharp corners or cladding continuity. Default is True.
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res : float, optional
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Value for the res parameter. Default is 0.1.
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"""
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def __init__(self,
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name : str = None,
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xs : str = 'strip',
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w : 'list|np.ndarray' = [1.2,1.0,1.8,1.2,1.0,1.2,1.2],
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L : float = 6,
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R_att : float = 10,
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A_att : float = 10,
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w_port : float = 0.45,
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show_pins : bool = False,
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sharp_patch : bool = True,
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res : float = 0.1,
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) -> None:
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"""_summary_
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Args:
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name (str, optional): _description_. Defaults to None.
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xs (str, optional): _description_. Defaults to 'strip'.
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layer (str, optional): _description_. Defaults to None.
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w_in (float, optional): input port width. Defaults to 1.2.
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w_out (float, optional): output port width, for main body. Defaults to 1.2.
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w (list|np.ndarray, optional): _description_. Defaults to [1.2,1.0,1.8,1.2,1.0,1.2].
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L (float, optional): _description_. Defaults to 6.
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R_att (float, optional): _description_. Defaults to 10.
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A_att (float, optional): _description_. Defaults to 10.
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w_port (float, optional): _description_. Defaults to 0.45.
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show_pins (bool, optional): _description_. Defaults to False.
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res (float, optional): _description_. Defaults to 0.1.
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"""
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self.name = name
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if (name!=None):
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self.instantiate = True
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else :
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self.instantiate = False
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self.w = w
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self.L = L
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self.res = res
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self.R_att = R_att
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self.A_att = A_att
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self.w_port = w_port
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self.xs = xs
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self.cell = self.generate_gds(show_pins=show_pins,sharp_patch=sharp_patch)
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def generate_gds(self,show_pins=False,sharp_patch=True):
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with nd.Cell(name=self.name,instantiate=self.instantiate) as C:
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w = np.r_[self.w]
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n_sects = len(self.w)-1
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res = self.L/n_sects
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n_points = int(self.L/self.res)+1
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L = np.linspace(0,self.L,n_sects+1)
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L_act = np.linspace(0,self.L,n_points)
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f = CubicSpline(L,w) ## cubic spline interpolant
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w_act = f(L_act)
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for layers,growx,growy,acc in nd.layeriter(xs=self.xs):
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(a1,b1), (a2,b2),c1,c2 = growx
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w_cur = w_act*(a1-a2) + (b1-b2)
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if (b1!=0 and b2!=0):
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w_cur = max(w_cur)*np.ones(np.shape(w_cur))
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vtx_x = np.r_[L_act,np.flip(L_act,0)]
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vtx_y = np.r_[w_cur/2,-np.flip(w_cur/2,0)]
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vtx = np.c_[vtx_x,vtx_y]
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_my_polygon(layer_wg=layers,vtx=vtx).put(0,0,0)
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temp = circle(xs=self.xs,radius=self.R_att,theta_start=0,theta_stop=self.A_att,width=self.w_port).cell.put('a1',self.L,self.w[-1]/2 - self.w_port/2,0)
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temp = circle(xs=self.xs,radius=self.R_att,theta_start=-self.A_att,theta_stop=0,width=self.w_port).cell.put('a1',temp.pin['b1'],flip=1)
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nd.Pin(name='b1',width=self.w_port).put(temp.pin['b1'])
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temp = circle(xs=self.xs,radius=self.R_att,theta_start=0,theta_stop=self.A_att,width=self.w_port).cell.put('a1',self.L,-self.w[-1]/2 + self.w_port/2,0,flip=1)
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temp = circle(xs=self.xs,radius=self.R_att,theta_start=-self.A_att,theta_stop=0,width=self.w_port).cell.put('a1',temp.pin['b1'],flip=0)
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nd.Pin(name='b2',width=self.w_port).put(temp.pin['b1'])
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nd.Pin(name='a1',width=self.w[0]).put(0,0,180)
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if (show_pins):
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nd.put_stub()
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return C
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class Ybranch_3wg:
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"""
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Ybranch 3wg primitive component.
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This component builds the Ybranch 3wg layout cell.
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Parameters
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----------
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name : Optional[str], optional
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Unique identifier for the device cell. Default is None.
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w0 : float, optional
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Width parameter in microns. Default is 0.4.
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w1 : float, optional
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Width parameter in microns. Default is 0.2.
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gap : float, optional
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Spacing or gap parameter in microns. Default is 0.18.
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Lcp : float, optional
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Length parameter in microns. Default is 20.
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xs : str, optional
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Layer or cross-section name used by the device. Default is 'strip'.
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w_wg : float, optional
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Width parameter in microns. Default is 0.45.
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R0 : float, optional
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Radius parameter in microns. Default is 10.
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angle : float, optional
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Angle parameter in degrees. Default is 20.
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L_attach : float, optional
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Length parameter in microns. Default is 3.
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L_in_tp : float, optional
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Length parameter in microns. Default is 3.
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sharp_patch : bool, optional
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Whether to add geometry patches for sharp corners or cladding continuity. Default is True.
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"""
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def __init__(self,
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name: Optional[str] = None,
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w0:float=0.4,
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w1:float=0.2,
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gap:float=0.18,
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Lcp:float=20,
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xs:str='strip',
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w_wg:float=0.45,
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R0:float=10,
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angle:float=20,
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L_attach:float=3,
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L_in_tp:float=3,
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sharp_patch:bool=True) -> None:
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'''
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Initialization of a symmetric tapered coupler for 3dB coupling
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Paras :
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1. taper part
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- w0/w1 [um] (Default: 0.4/0.2um)
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Input/Output taper width
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- L [um] (Default: 20um)
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taper length of the coupling area
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- gap [um] (Default : 0.18)
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vertical gap between the taper couplers
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- xs [str] (Default : 'strip')
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xsection of the waveguide
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2. attachment part
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- w_wg [um] (Default: 0.45um)
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Input&ouput waveguide width
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- L_attach [um] (Default: 3um)
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Input&ouput straight waveguide length
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- L_in_taper [um] (Default: 3um)
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Input&ouput taper waveguide length for connecting w_wg and w0
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- R0 [um] (Default: 10um)
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Ouput bending radius
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- angle [um] (Default: 10um)
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Ouput bending angle
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Cell:
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- pins
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input [a1]
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outpuit [b1][b2]
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'''
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self.name = name
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if (self.name==None):
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self.instantiate = False
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else :
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self.instantiate = True
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self.w0 = w0
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self.w1 = w1
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self.gap = gap
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self.Lcp = Lcp
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self.xs = xs
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self.w_wg = w_wg
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self.R0 = R0
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self.angle = angle
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self.L_attach = L_attach
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self.L_in_tp = L_in_tp
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self.cell = self.generate_gds(sharp_patch=sharp_patch)
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self.L = np.abs(self.cell.pin['a1'].x - self.cell.pin['b1'].x)
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def generate_gds(self,sharp_patch,err_asy=0):
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with nd.Cell(instantiate=self.instantiate,name=self.name) as C:
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w0 = self.w0
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w1 = self.w1
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Lcp = self.Lcp
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gap = self.gap
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xs = self.xs
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w_wg = self.w_wg
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L_attach = self.L_attach
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L_in_tp = self.L_in_tp
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angle = self.angle
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R0 = self.R0
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t_mid = nd.taper(width1=w0,width2=w1,length=Lcp,xs=xs).put(0,0,0)
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t_u = nd.taper(width2=w0,width1=w1,length=Lcp,xs=xs).put(0,w1/2+w0/2+gap,0)
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t_d = nd.taper(width2=w0,width1=w1,length=Lcp,xs=xs).put(0,-(w1/2+w0/2+gap),0)
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t_in = nd.taper(width1=w_wg,width2=w0,length=L_in_tp,xs=xs).put(-L_in_tp,0,0)
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t_in = nd.strt(width=w_wg,length=L_attach,xs=xs).put(t_in.pin['a0'],flip=0)
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nd.Pin(name='a1',pin=t_in.pin['b0']).put()
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au = nd.bend(radius=R0,angle=angle,xs=xs,width=w0).put(t_u.pin['b0'],flip=0)
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au = nd.bend(radius=R0,angle=angle,xs=xs,width=w0).put(au.pin['b0'],flip=1)
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au = nd.taper(width1=w0,width2=w_wg,length=L_in_tp,xs=xs).put(au.pin['b0'],flip=0)
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au = nd.strt(width=w_wg,length=L_attach,xs=xs).put(au.pin['b0'],flip=0)
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nd.Pin(name='b1',pin=au.pin['b0']).put()
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ad = nd.bend(radius=R0,angle=angle,xs=xs,width=w0).put(t_d.pin['b0'],flip=1)
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ad = nd.bend(radius=R0,angle=angle,xs=xs,width=w0).put(ad.pin['b0'],flip=0)
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ad = nd.taper(width1=w0,width2=w_wg,length=L_in_tp,xs=xs).put(ad.pin['b0'],flip=0)
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ad = nd.strt(width=w_wg,length=L_attach,xs=xs).put(ad.pin['b0'],flip=0)
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nd.Pin(name='b2',pin=ad.pin['b0']).put()
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if (sharp_patch==True):
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dY = np.abs(ad.pin['b0'].y-au.pin['b0'].y)+w_wg
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for layers,growx,growy,acc in nd.layeriter(xs=xs):
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(a1,b1), (a2,b2),c1,c2 = growx
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if (b1!=0 and b2!=0):
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L_patch = dY*(a1-a2)+(b1-b2)
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W_patch = dY*(a1-a2)+(b1-b2)
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nd.strt(length=W_patch,width=L_patch,layer=layers).put(ad.pin['b0'].x,0,0)
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return C
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def generate_test_gds(self,gc,dX_gc2gc=400,dY_gc2gc=80,sharp_patch = True,Rbend=15):
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with nd.Cell(instantiate=False) as C:
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gc_cell = __cell_arg__(arg=gc,arg_name="gc",func_name="mxpic::Ybranch_3wg::generate_test_gds")
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inst = self.cell.put('a1',-self.L/2,0,0)
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gc_In = gc_cell.put('g1',-dX_gc2gc/2,0,180)
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gc_O1 = gc_cell.put('g1',dX_gc2gc/2, dY_gc2gc/2,0)
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gc_O2 = gc_cell.put('g1',dX_gc2gc/2,-dY_gc2gc/2,0)
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pic_strip = Route(radius=Rbend,width=self.w_wg,xs=self.xs)
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pic_strip.taper(pin=gc_O1.pin['g1'],width1=gc_O1.pin['g1'].width,width2=self.w_wg,length=5,arrow=False)
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pic_strip.sbend_p2p(original_function=not sharp_patch, pin2=inst.pin['b1'],arrow=False).put()
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pic_strip.taper(pin=gc_O2.pin['g1'],width1=gc_O2.pin['g1'].width,width2=self.w_wg,length=5,arrow=False)
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pic_strip.sbend_p2p(original_function=not sharp_patch, pin2=inst.pin['b2'],arrow=False).put()
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pic_strip.taper_p2p(pin1=gc_In.pin['g1'],pin2=inst.pin['a1'],arrow=False).put()
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return C
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