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Circular Integrated Photonics Lab
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An organic photonics lab that prints optical devices with inkjet.
AboutAbout the lab
Printing optical devices with a desktop printer.
The Circular Integrated Photonics Lab conducts research aiming for "Table-top Fabrication," in which optical devices are printed with a desktop printer.
Starting from organic materials (soft materials), the lab develops "organic coherent photonics."
It works on self-assembly by inkjet, mask-free processing using nano-scratching, and hybrid integration with inorganic waveguides.
On the lab's website, it is introduced under the name "Yoshioka Lab."
Key terms
- Soft materials
- Organic materials. In this lab, they are the starting material for making optical devices
- Self-assembly
- Materials arranging their own shape without fine external manipulation. Here, printed droplets form a smooth surface through surface tension
- Waveguide
- A component that provides a path for light. It guides light on a chip
- Mask-free processing
- Processing that shapes a material by removing it without using a resist or a mask
NewsLab news
An international co-authored paper by the Yoshioka group and the University of Münster was published in Optics Letters
An international co-authored paper with Assistant Professor Chen as first author was published in Advanced Photonics Research
A doctoral student's paper was selected as a cover picture of ACS Photonics
A doctoral student's paper was published in ACS Photonics
ResearchResearch themes
The lab aims for "Table-top Fabrication," in which optical devices are printed with a desktop printer without relying on huge infrastructure such as semiconductor factories. It studies how to print organic materials by inkjet and other methods and create microscopic optical resonators and optical circuits through self-assembly and local processing.
*Illustrative imageFrom subtractive to printed manufacturing
Manufacturing semiconductors and photonic chips is a process of "carving out" that depends on huge factories, enormous amounts of electricity, and ultrapure water. The lab aims for additive manufacturing, in which a desktop printer places just the necessary amount of material only where it is needed.
*Illustrative imageFlowing glass and self-assembly
The lab controls organic materials, which have a high refractive index and are compatible with microfabrication, in picoliter units. Printed droplets self-assemble through surface tension and become microscopic optical resonators with atomically smooth surfaces, without polishing.
*Illustrative imagePrinting and processing techniques for drawing optical circuits
The lab uses inkjet printing, which places picoliter droplets; micro/nano dispensing, which draws waveguides directly on a substrate; and nano-scratching and flow etching, which locally remove material with a probe or the liquid flow in a microchannel (without plasma or hazardous chemicals).
*Illustrative imageAn optical ecosystem beyond the chip
Flexible devices make it possible to build optical sensor networks that can be attached like stickers to curved surfaces, living bodies, and natural infrastructure. The lab aims for an optical ecosystem in which devices are printed on the spot when needed and disassembled or reconfigured when no longer needed.
MembersFaculty
The members of the Circular Integrated Photonics Lab consist of faculty and master's 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-Nummerierwerk” Monster4711 / CC BY-SA 4.0 (cropped)
- From subtractive to printed manufacturing: “A Mitsubishi printing press in a printing company in Euljiro printing alley” Aaaatu / CC BY-SA 4.0 (cropped)
- Flowing glass and self-assembly: “Wooden hourglass 3” User:S Sepp / CC BY-SA 3.0 (cropped)
- Printing and processing techniques for drawing optical circuits: “Working at an optical communications system testbed” NiamhTalking90 / CC BY-SA 4.0 (cropped)
- An optical ecosystem beyond the chip: “Dichroitisches Prisma” Dietmar Rabich / CC BY-SA 4.0 (cropped)
- Related lab (Micro/Nano Laser Device Lab): “Laser module” 彭家杰 / CC BY-SA 3.0 (cropped)
- Related lab (Information Photonics Lab): “Photonic Spectrum prototype being tested by Autumn Siegel” Victoria Lee Croasdell / CC BY-SA 4.0 (cropped)
- Related lab (Functionality Emergence Integrated Systems Lab): “2N1307 transistor bond wires” Mister rf / CC BY-SA 4.0 (cropped)
- Related lab (Microdevice Lab): “3x3 Quilt Packaging Chip Array” Jacksontlu / CC BY-SA 4.0 (cropped)
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