SPLayout

Silicon Photonics Design Tools for GDSII Files. It is based on gdspy(heitzmann/gdspy: Python module for creating GDSII stream files, usually CAD layouts. (github.com)) and can interact with it.

Dependency

• Python3 (3.6, 3.7, 3.8)
• gdspy
• scipy
• numpy

Installation

use pip:

pip install splayout

or download from the source and build/install with:

python setup.py install

Documentation

The documentation can be found here.

References for Inverse Design Methods

[1] Mirjalili, S., Mirjalili, S.M. & Yang, XS. Binary bat algorithm. Neural Comput &Applic 25, 663–681 (2014). https://doi.org/10.1007/s00521-013-1525-5

[2] Shen, B., Wang, P., Polson, R. et al. An integrated-nanophotonics polarization beamsplitter with 2.4 × 2.4 μm2 footprint. Nature Photon 9, 378–382 (2015). https://doi.org/10.1038/nphoton.2015.80

History

Version 0.0.1 (Jun 29, 2021)

• Initial release

Version 0.0.2 (Jun 30, 2021)

• Fix a fatal bug in version 0.0.1 that Selfdefinecomponent can not work with multi-components.

Version 0.0.3 (Jul 1, 2021)

• Add document.
• Fix a bug that the microring can not return the right pad point when it is rotated.
• Fix a bug horizonal -> horizontal.
• Fix a bug Point._eq_ will return False when other==None.

Version 0.0.4 (Jul 21, 2021)

• Lift restrictions on taper length.
• Support coordinate transfer for MAKE_COMPONENT.

Version 0.0.5 (Jul 24, 2021)

• Add self.get_start_point() for AEMD_grating.
• New Class: SBend & ASBend.
• Add a constant: pi = math.pi.

Version 0.0.6 (Jul 27,2021) & Version 0.0.7 (Jul 28, 2021)

• SBend docs update.
• Variable names: angle -> radian.
• AEMD gratings can have multiple definitions in a file.
• AEMD Grating default relative position：RIGHT.
• New cell function: self.remove_components().
• If the input filename of "make_gdsii_file" is not "*.gds", it will automatically add ".gds" to the tail.
• New class: Circle, Rectangle.
• Add port points definition for Polygon.

Version 0.1.4 & Version 0.1.5 (Sep 6, 2021)

• FDTD API added.
• Binary Bat Algorithm & Direct Binary Search Algorithm for inverse design.