gdsfactory / ubc Goto Github PK

UBC Siepic Ebeam PDK from edx course

Home Page: https://gdsfactory.github.io/ubc/index.html

License: MIT License

Makefile 0.98% Python 96.76% Shell 1.73% Dockerfile 0.05% Jinja 0.48%

ubc's Introduction

GDSFactory 8.7.0

🚀 Notice: Major Release

We are excited to announce that GDSFactory has upgraded its backend from gdstk to KLayout. This change brings enhanced routing functions and additional features from KLayout, including DRC, dummy fill, and connectivity checks.

Notice that the routing and some advanced functions have changed. For a complete list of changes, please refer to our migration guide or review the updated layout tutorial.

GDSFactory is a powerful Python library for designing a wide range of complex systems, including photonic circuits, analog devices, quantum components, MEMs, 3D printed objects, and PCBs. With GDSFactory, you can create and refine your designs using Python or YAML, perform rigorous verification through Design Rule Checking (DRC), Layout Versus Schematic (LVS) checks, and simulations. Additionally, it facilitates automated lab testing to ensure that your fabricated devices meet precise specifications, streamlining the entire design-to-fabrication workflow.

As input you write python code, as an output GDSFactory creates CAD files (GDS, OASIS, STL, GERBER).

Highlights:

+2M downloads
+65 Contributors
+15 PDKs available

We provide a comprehensive end-to-end design flow that enables you to:

Design (Layout, Simulation, Optimization): Define parametric cell functions in Python to generate components. Test component settings, ports, and geometry to avoid unwanted regressions, and capture design intent in a schematic.
Verify (DRC, DFM, LVS): Run simulations directly from the layout using our simulation interfaces, removing the need to redraw your components in simulation tools. Conduct component and circuit simulations, study design for manufacturing. Ensure complex layouts match their design intent through Layout Versus Schematic verification (LVS) and are DRC clean.
Validate: Define layout and test protocols simultaneously for automated chip analysis post-fabrication. This allows you to extract essential component parameters, and build data pipelines from raw data to structured data to monitor chip performance.

Your input: Python or YAML text. Your output: A GDSII or OASIS file for fabrication, alongside component settings (for measurement and data analysis) and netlists (for circuit simulations) in YAML.

We provide a common syntax for design (Ansys, Lumerical, Tidy3d, MEEP, DEVSIM, SAX, MEOW, Xyce ...), verification, and validation.

Numerous foundries offer GDSFactory PDKs that are accessible under an NDA. To gain access to these PDKs, please send proof of your NDA to [email protected]

AIM photonics PDK
AMF photonics PDK
Compoundtek photonics PDK
GlobalFoundries 45SPCLO Photonics PDK
HHI Photonics PDK
IMEC photonics PDK
Smart Photonics Photonics PDK
TowerSemi PH18 photonics PDK
III-V Labs PDK
Lionix PDK

Coming soon:

Ligentec PDK

There are also open source PDKs available without an NDA:

Getting started

See slides
Read docs
See announcements on GitHub, google-groups or LinkedIn
PIC training
Online course UBCx: Silicon Photonics Design, Fabrication and Data Analysis, where students can use GDSFactory to create a design, have it fabricated, and tested.

Who is using GDSFactory?

Hundreds of organisations are using GDSFactory. Some companies and organizations around the world using GDSFactory include:

"I've used GDSFactory since 2017 for all my chip tapeouts. I love that it is fast, easy to use, and easy to extend. It's the only tool that allows us to have an end-to-end chip design flow (design, verification and validation)."

Joaquin Matres - Google

"I've relied on GDSFactory for several tapeouts over the years. It's the only tool I've found that gives me the flexibility and scalability I need for a variety of projects."

Alec Hammond - Meta Reality Labs Research

"The best photonics layout tool I've used so far and it is leaps and bounds ahead of any commercial alternatives out there. Feels like GDSFactory is freeing photonics."

Hasitha Jayatilleka - LightIC Technologies

"As an academic working on large scale silicon photonics at CMOS foundries I've used GDSFactory to go from nothing to full-reticle layouts rapidly (in a few days). I particularly appreciate the full-system approach to photonics, with my layout being connected to circuit simulators which are then connected to device simulators. Moving from legacy tools such as gdspy and phidl to GDSFactory has sped up my workflow at least an order of magnitude."

Alex Sludds - MIT

"I use GDSFactory for all of my photonic tape-outs. The Python interface makes it easy to version control individual photonic components as well as entire layouts, while integrating seamlessly with KLayout and most standard photonic simulation tools, both open-source and commercial.

Thomas Dorch - Freedom Photonics

Why use GDSFactory?

It's fast, extensible and easy to use.
It's free, as in freedom and in cost.
It's the most popular EDA tool with a growing community of users, developers, and extensions to other tools.

GDSFactory is really fast thanks to KLayout C++ library for manipulating GDSII objects. You will notice this when reading/writing big GDS files or doing large boolean operations.

Benchmark	gdspy	GDSFactory	Gain
10k_rectangles	80.2 ms	4.87 ms	16.5
boolean-offset	187 μs	44.7 μs	4.19
bounding_box	36.7 ms	170 μs	216
flatten	465 μs	8.17 μs	56.9
read_gds	2.68 ms	94 μs	28.5

Contributors

Thanks to all the contributors that make this awesome project possible!

ubc's People

Contributors

Stargazers

Watchers

ubc's Issues

generate test conditions

Waiting for the test sequence is final to automatically generate it

@mustafacc
@lukasc-ubc
@SkandanC
@raphaeldubedemers

We also did some work on defining the test protocols in a restful API
https://github.com/EHVAAutomation/ehva-python/blob/Master/ehva/ehva_api.py

Here is the current plan on record

Devices:
  BraggGratingwithHeater,comment,comment:
    DeviceID: BraggGratingwithHeater,comment,comment
    Electrical Coordinates: []
    Optical Coordinates:
    - 50.0
    - 303.0
    Polarization: TE
    RoutineCheck: true
    Routines:
    - Set Wavelength Voltage Sweep:VoltageSweep_1480,1500,1530,1550
    - Set Wavelength Current Sweep:CurrentSweep_1480,1500,1550
    - Set Voltage Wavelength Sweep:WavelengthSweep_0.1,0.2,0.3
    Type: device
    Wavelength: '1550'
Routines:
  Current Sweep:
    Default:
      Channel A: true
      Channel B: false
      ELECflag: true
      IV: true
      Initialrange: ''
      Laseroutput: High power
      Max: '1'
      Min: '0'
      Numscans: '1'
      OPTICflag: false
      PV: true
      RV: true
      RangeDec: ''
      Res: '1'
      Start: ''
      Stepsize: ''
      Stop: ''
      Sweeppower: ''
      Sweepspeed: auto
      Voltages: ''
      Wavelengths: ''
      setvflag: false
      setwflag: false
  Set Voltage Wavelength Sweep:
    Default:
      Channel A: true
      Channel B: false
      ELECflag: false
      IV: false
      Initialrange: '-20'
      Laseroutput: High power
      Max: ''
      Min: ''
      Numscans: '1'
      OPTICflag: false
      PV: false
      RV: false
      RangeDec: '20'
      Res: ''
      Start: '1480'
      Stepsize: '1'
      Stop: '1580'
      Sweeppower: ''
      Sweepspeed: auto
      Voltages: 1, 2, 3
      Wavelengths: ''
      setvflag: true
      setwflag: false
    WavelengthSweep_0.1,0.2,0.3:
      Channel A: true
      Channel B: false
      IV: false
      Initialrange: '-20'
      Laseroutput: High power
      Max: ''
      Min: ''
      Numscans: '1'
      PV: false
      RV: false
      RangeDec: '20'
      Res: ''
      Start: '1480'
      Stepsize: '1'
      Stop: '1580'
      Sweeppower: '0'
      Sweepspeed: auto
      Voltages: 0.1, 0.2, 0.3
      Wavelengths: ''
  Set Wavelength Current Sweep:
    CurrentSweep_1480,1500,1550:
      Channel A: true
      Channel B: false
      IV: true
      Initialrange: '-20'
      Laseroutput: High power
      Max: '5'
      Min: '0'
      Numscans: '1'
      PV: true
      RV: true
      RangeDec: '20'
      Res: '0.01'
      Start: ''
      Stepsize: ''
      Stop: ''
      Sweeppower: ''
      Sweepspeed: auto
      Voltages: ''
      Wavelengths: 1480, 1500, 1550
    Default:
      Channel A: true
      Channel B: false
      ELECflag: false
      IV: false
      Initialrange: '-20'
      Laseroutput: High power
      Max: '5'
      Min: '0'
      Numscans: '1'
      OPTICflag: false
      PV: false
      RV: false
      RangeDec: '20'
      Res: '0.1'
      Start: ''
      Stepsize: ''
      Stop: ''
      Sweeppower: ''
      Sweepspeed: auto
      Voltages: ''
      Wavelengths: 1480, 1500, 1550
      setvflag: false
      setwflag: true
  Set Wavelength Voltage Sweep:
    Default:
      Channel A: true
      Channel B: false
      ELECflag: false
      IV: true
      Initialrange: ''
      Laseroutput: High power
      Max: '1'
      Min: '0'
      Numscans: '1'
      OPTICflag: false
      PV: true
      RV: true
      RangeDec: ''
      Res: '1'
      Start: ''
      Stepsize: ''
      Stop: ''
      Sweeppower: ''
      Sweepspeed: auto
      Voltages: ''
      Wavelengths: ''
      setvflag: false
      setwflag: true
    VoltageSweep_1480,1500,1530,1550:
      Channel A: true
      Channel B: false
      IV: true
      Initialrange: ''
      Laseroutput: High power
      Max: '1'
      Min: '0'
      Numscans: '1'
      PV: true
      RV: true
      RangeDec: ''
      Res: '0.01'
      Start: ''
      Stepsize: ''
      Stop: ''
      Sweeppower: ''
      Sweepspeed: auto
      Voltages: ''
      Wavelengths: 1480,1500,1530,1550
  Voltage Sweep:
    Default:
      Channel A: true
      Channel B: false
      ELECflag: true
      IV: true
      Initialrange: ''
      Laseroutput: High power
      Max: '1'
      Min: '0'
      Numscans: '1'
      OPTICflag: false
      PV: true
      RV: true
      RangeDec: ''
      Res: '100'
      Start: ''
      Stepsize: ''
      Stop: ''
      Sweeppower: ''
      Sweepspeed: auto
      Voltages: ''
      Wavelengths: ''
      setvflag: false
      setwflag: false
  Wavelength Sweep:
    Default:
      Channel A: false
      Channel B: false
      ELECflag: false
      IV: false
      Initialrange: '-20'
      Laseroutput: High power
      Max: ''
      Min: ''
      Numscans: '1'
      OPTICflag: true
      PV: false
      RV: false
      RangeDec: '20'
      Res: ''
      Start: '1480'
      Stepsize: '1'
      Stop: '1580'
      Sweeppower: '0'
      Sweepspeed: auto
      Voltages: ''
      Wavelengths: ''
      setvflag: false
      setwflag: false

it's a great opportunity to write a paper about the end to end flow

Send PR if you want to get your device fabricated

@MRBaozi
@SkandanC
@nikosavola
@das-dias

Make sure it's DRC clean

pip install ubcpdk, fails

Hi @joamatab,

I tried to install ubcpdk but it fails:

ERROR: Failed building wheel for gdstk

I have gdsfactory working, so perhaps this PDK has an extra dependancy that doesn't work?

thank you
Lukas

import_gds differend keywords

In ubcpdk/import_gds.py in function add_ports:

As from gdstk docs (https://heitzmann.github.io/gdstk/library/gdstk.Label.html) label has no position, should use origin instead maybe?
same for gf.Port - there is no midpoint as of my knowledge. Use center maybe?