Package: phidl
PHIDLGDS scripting for Python that's intuitive, fast, and powerful.Installation / requirementsTutorial + examples(ortry an interactive notebook)Geometry library + function documentationChangelog(latest update 1.6.3 on July 20, 2023)Newpg.fill_rectangle()examples and documentationCitationIf you found PHIDL useful, please consider citing it in (just one!) of your publications -- we appreciate it greatly. (BibTeX)McCaughan, A. N., et. al. PHIDL: Python-based layout and geometry creation for nanolithography.J. Vac. Sci. Technol. B39, 062601 (2021).http://dx.doi.org/10.1116/6.0001203GalleryInstallation / requirementsInstall or upgrade withpip install -U phidlPython version >=3.6If you are on Windows or Mac and don't already havegdspyinstalled, you will need a C++ compilerFor Windows + Python 3, install"Build Tools for Visual Studio"(make sure to check the "C++ build tools" checkbox when installing)For Mac, install "Xcode" from the App Store, then run the commandxcode-select --installin the terminalAbout PHIDLfiddle (verb) - /ˈfidl/ - to make minor manual movements, especially to adjust somethingPHIDL is an open-source GDS-based CAD tool for Python that significantly extends the excellentgdspy.  The base installation includes a large library of simple shapes (e.g. rectangles, circles), photonic structures (e.g. sine curve waveguides), and superconducting nanowire shapes (e.g. single photon detectors) that are fully parameterized. It also has a built-in quick-plotting function based on matplotlib (or Qt) that allows you view the state of any GDS object, useful when scripting geometry-making functions. It also has ageometry library referenceand a set ofvery thorough tutorialsthat will walk you through the process of getting acquainted with PHIDL.The goal is to bring the usability of Illustrator / Inkscape drawing programs to the GDS scripting world. Like Python itself, it aims to be readable, and intuitive.  For instance, when building a geometry you don't have to worry about what the exact coordinates are anymore. If you want to separate two ellipses in the x direction by 5 units, you can do things like this:ellipse1.xmin = ellipse2.xmax + 5or if you want to move then rotate one ellipse by 45 degrees you can doellipse2.move([1,7]).rotate(45)There's a few dozen shortcuts like this that make life easier built into PHIDL--they're simple, but they make a world of difference when you just want to e.g. space a ring resonator some distance from a waveguide without having to track each and every coordinate of the shape.There's also a "port" functionality that allows you to snap together geometry like Legos without caring about where exactly the absolute coordinates of either geometry is.  For instance, connecting the above misaligned rectangles is a two-line command:It also allows you to do things like add text and create smooth or straight routing curves between "ports" of different devices, convenient for making electrical or optical connections:Other useful functionality available are standard operations like booleans:and less standard ones like creating outlines. A whole layout can be outlined directly in the GDS without requiring you to use Beamer (useful for positive-tone resist structures):pg.outline(D, distance = 0.7, layer = 4)The geometry library also has useful resolution test-structures built into it, for instancepg.litho_calipers(num_notches = 7, offset_per_notch = 0.1)
pg.litho_steps(line_widths = [1,2,4,8,16])
pg.litho_star(num_lines = 16, line_width = 3)There are also handy functions to help pack shapes into as small an area as possible:pg.packer(D_list, spacing = 1.25, aspect_ratio = (2,1))