Merge pull request #981 from gdsfactory/680

add thickness_tolerance to LayerLevel and box_thickness to LayerStack

gdsfactory/simulation/simphony/tests/test_circuit/test_circuit_transmission.yml

@@ -1,7 +1,7 @@
 s:
-- 1.3220365006
-- 0.9111160204
-- 0.3730304792
+- 1.3219649652
+- 0.9110420866
+- 0.3730220253
 w:
 - 1600.0
 - 1548.3870967741937

gdsfactory/simulation/simphony/tests/test_components/test_elements_mmi2x2_.yml

@@ -11,7 +11,7 @@ s13:
 - 0.381
 - 0.42
 s14:
-- 0.507
+- 0.506
 - 0.505
 - 0.465
 s21:
@@ -47,7 +47,7 @@ s34:
 - 0.117
 - 0.114
 s41:
-- 0.507
+- 0.506
 - 0.505
 - 0.465
 s42:

gdsfactory/tech.py

@@ -104,6 +104,7 @@ class LayerLevel(BaseModel):
     Parameters:
         layer: (GDSII Layer number, GDSII datatype).
         thickness: layer thickness in um.
+        thickness_tolerance: layer thickness tolerance in um.
         zmin: height position where material starts in um.
         material: material name.
         sidewall_angle: in degrees with respect to normal.
@@ -124,6 +125,7 @@ class LayerLevel(BaseModel):
 
     layer: Tuple[int, int]
     thickness: float
+    thickness_tolerance: Optional[float] = None
     zmin: float
     material: Optional[str] = None
     sidewall_angle: float = 0
@@ -135,9 +137,13 @@ class LayerStack(BaseModel):
 
     Parameters:
         layers: dict of layer_levels.
+        box_thickness: in um.
+        box_thickness_tolerance: standard deviation in um.
     """
 
     layers: Dict[str, LayerLevel]
+    box_thickness: Optional[float] = None
+    box_thickness_tolerance: Optional[float] = None
 
     def get_layer_to_thickness(self) -> Dict[Tuple[int, int], float]:
         """Returns layer tuple to thickness (um)."""