apodized_grating

photonforge.stencil.apodized_grating(tooth_spacing, tooth_width, width, taper_length, taper_width)

Create an apodized grating.

Parameters:

  • teeth_gaps (float | Sequence[float]) – Distance between adjacent grating teeth.

  • teeth_widths (float | Sequence[float]) – List of grating teeth width.

  • width (float) – Lateral grating width.

  • taper_length (float) – length of an optional linear taper ending at the grating.

  • taper_width (float) – width at the start of the linear taper.

Returns:

Grating structures.

Return type:

list[Rectangle | Polygon]

Note

Arguments teeth_gaps and teeth_widths can be a single number or a sequence. The largest sequence among them will define the number of teeth created. The smaller will be increased to the largest length by repeating its last element.

# Grating with taper, constant widths and varying spacings
grating1 = pf.stencil.apodized_grating(
    teeth_gaps=np.linspace(0.2, 0.4, 20),
    teeth_widths=0.2,
    width=10,
    taper_length=30,
    taper_width=0.5,
)

# Grating without taper, width and spacing variations
grating2 = pf.stencil.apodized_grating(
    teeth_gaps=np.linspace(0.2, 0.4, 20), teeth_widths=np.linspace(0.4, 0.1, 20), width=10
)
apodized_grating