WaveguideSideBlockGratingPeriod

class picazzo3.wg.grating.cell.WaveguideSideBlockGratingPeriod

Period for a waveguide with blocks on the side. The base definition is taken from the wg_template which is used for the ports.

Parameters:

wg_template: PCell and _WaveguideTemplate

Waveguide template of start and end of the period (and ports)

name: String that contains only ISO/IEC 8859-1 (extended ASCII py3) or pure ASCII (py2) characters

The unique name of the pcell

Views

class Layout

Parameters:

block_layer: __Layer__

Layer on which the blocks should be drawn. By default, the core layer of the waveguide is used.

relative_block_width: ( bool, bool_ or int )

If True, the block width is expressed as a fraction of the length.

block_offset: float and Real, number and number >= 0

The offset from the waveguide center line to the block’s edge closest to the waveguide core. By default, the core width is used.

block_height: float and number > 0

The height of the side block, perpendicular to the waveguide direction. By default, it extends up to the edge of the cladding.

block_width: float and number > 0

The width of the block along the waveguide direction. If ‘relative_block_width’ is True (default), this is expressed as a fraction of the period length (fill factor).

length: float and Real, number and number >= 0

Length of the grating period.

view_name: String that contains only alphanumeric characters from the ASCII set or contains _$. ASCII set is extended on PY3.

The name of the view

Examples

"""We make a grating with blocks on the side."""
import si_fab.all as pdk  # noqa: F401
from picazzo3.wg.grating import WaveguideUniformGrating, WaveguideSideBlockGratingPeriod
from picazzo3.traces.wire_wg import WireWaveguideTemplate

t1 = WireWaveguideTemplate(name="wire_t")
t1.Layout(core_width=0.6, cladding_width=3.0)

period = WaveguideSideBlockGratingPeriod(name="period_sb", wg_template=t1)
period.Layout(length=0.31)  # use defaults
period.CircuitModel(reflection=0.2)

grating = WaveguideUniformGrating(name="my_sideblock_grating", period_cell=period, n_o_periods=12)

layout = grating.Layout()

layout.visualize(annotate=True)