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Circular Integrated Photonics Lab
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A photonics lab that prints optical circuits with a desktop printer.
AboutAbout the lab
Making optical circuits on a desk, not in a factory.
The Circular Integrated Photonics Lab studies how to realize "Table-top Fabrication," in which anyone can print photonic devices with a desktop printer.
Until now, optical chips have been made in huge factories using enormous amounts of electricity.
The lab uses organic materials to make small devices that handle light, through inkjet-based self-assembly and nanoscratching.
On the lab's website, the lab is introduced under the name "Yoshioka Lab."
Key terms
- Self-assembly
- The process in which printed droplets shape themselves through surface tension. A smooth surface forms without polishing.
- Optical microresonator
- A tiny structure that confines light inside it. Here, it is made from the smooth surface of a printed droplet.
- Nanoscratching
- A machining method that removes material locally with a probe tip. No resist or mask is used.
NewsLab news
An internationally co-authored paper by the Yoshioka Group and the University of Münster was published in Optics Letters
A paper first-authored by an Assistant Professor was published in Advanced Photonics Research
A paper was selected for the cover picture of the December 2024 issue of ACS Photonics
An internationally co-authored paper with the University of Münster was published in ACS Photonics
ResearchResearch themes
The lab studies how to make optical chips by printing them on a desk, where needed and only as much as needed, rather than in a huge factory. It also aims to realize a photonic ecosystem in which devices return to nature after use, or are disassembled and reconfigured.
*Illustrative imageFrom Subtractive Fabrication to Printed Optical Chips
Semiconductors and optical chips are made by "subtractive" processes that require huge factories and enormous amounts of electricity. The lab aims for fabrication that needs neither vacuum equipment nor a cleanroom, using a desktop printer to deposit material only where and as much as needed.
*Illustrative imageMaking Smooth Resonators by Self-Assembly
The lab controls organic materials (soft materials), which combine a high refractive index with suitability for microfabrication, in picoliter volumes. Printed droplets self-assemble through surface tension and become optical microresonators with atomically smooth surfaces, without any polishing.
*Illustrative imageThree Ways to Draw Optical Circuits
The lab uses inkjet printing, which places picoliter droplets; dispensing, which draws waveguides directly using surface tension; and nanoscratching and flow etching, which partially remove material with a probe tip or with the liquid flow in tiny channels.
*Illustrative imageA Photonic Ecosystem That Can Be Stuck On and Returns to Nature
Moving away from rigid silicon chips, the lab aims for networks of optical sensors that can be attached like stickers to curved surfaces, living bodies, and natural infrastructure. It works toward a photonic ecosystem in which devices are printed when needed and, once no longer needed, are returned to nature or disassembled and reconfigured.
MembersFaculty
The members of the Yoshioka Lab consist of faculty, master's students, and undergraduate students.As of 2026
- Associate ProfessorHiroaki Yoshioka
- Assistant ProfessorJinghan Chen
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Inkjet printer with covers removed” Snewkirk7953 / CC BY-SA 3.0 (cropped)
- From Subtractive Fabrication to Printed Optical Chips: “Red optical fibers” Tyler Nienhouse / CC BY 2.0 (cropped)
- Making Smooth Resonators by Self-Assembly: “Double Optical Ring Resonator” Lamboman2008 / CC BY-SA 3.0 (cropped)
- Three Ways to Draw Optical Circuits: “Working at an optical communications system testbed” NiamhTalking90 / CC BY-SA 4.0 (cropped)
- A Photonic Ecosystem That Can Be Stuck On and Returns to Nature: “Biodegradable Coffee Cup in the Woods” Meanwell Packaging / CC BY 2.0 (cropped)
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