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Mizuno Lab (Sensing Photonics Lab)
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The lab measures strain and temperature by using optical fibers as “artificial nerves.”
AboutAbout the lab
Optical fibers as artificial nerves for structures.
The Mizuno Lab studies optical fiber sensing technology, which uses optical fibers to measure strain, temperature, and other quantities.
The lab aims to realize smart structures, in which optical fibers are embedded as “nerves” in buildings, bridges, and the like to detect damage and changes in temperature.
It also works on plastic optical fibers that can withstand large strain, and on lidar that measures distance and vibration using light.
The lab was established in April 2020.
Key terms
- Smart structure
- A next-generation structure in which optical fibers are embedded as nerves so that the structure itself can report damage and changes in temperature
- Brillouin scattering
- A type of light scattering that occurs inside an optical fiber. The shift in the frequency of the light that accompanies the scattering is used to measure strain and temperature
- Lidar
- A technology that shines light on a target and analyzes the reflected light to measure the distance to the target
NewsLab news
A master's student's paper has been accepted by Japanese Journal of Applied Physics
A student received the Best Award of the Student Poster Encouragement Award at the Study Group on Optical Fiber Applied Technology
A master's student's paper has been published in IEEJ Transactions on Electrical and Electronic Engineering
A master's student's paper has been published in Optical Fiber Technology
A student's paper has been published in Results in Optics
ResearchResearch themes
The Mizuno Lab centers its research on optical fiber sensing technology, aiming to realize smart structures in which optical fibers are embedded in structures as artificial nerves. It works on four themes: distributed optical fiber sensors, plastic optical fiber sensors, plastic optical fiber fuses, and correlation-domain lidar.
Distributed Optical Fiber Sensors
These are sensors that can measure strain and temperature at any position along an optical fiber. Centered on its original method “BOCDR,” which uses Brillouin scattering and operates simply by injecting light from one end of the fiber, the lab makes higher performance and practical application its core research theme.
*Illustrative imagePlastic Optical Fiber Sensors
The lab studies sensors that use plastic optical fibers (POFs), which withstand large strain, in place of glass fibers, which break when stretched by a few percent. Together with a professor at Institute of Science Tokyo, it also proposes a “sensor with memory” that makes use of the plastic deformation of POFs.
*Illustrative imagePlastic Optical Fiber Fuse
The lab was the first to observe in POFs the “fuse effect,” in which an optical discharge generated by high-power light propagates while destroying the fiber, and it has clarified the effect's distinctive properties. Through joint research with groups in Brazil and Portugal, it has also demonstrated an application to ultra-high-sensitivity magnetic field measurement.
*Illustrative imageCorrelation-Domain Lidar
Extending the principle of distributed optical fiber sensors into space, the lab developed “correlation-domain lidar,” which controls the correlation of light to perform long-distance ranging and vibration detection at the same time. It is currently working to improve its performance.
MembersFaculty
- Associate ProfessorYosuke Mizuno
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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: “Optical fiber cable-06ASD” Asurnipal / CC BY-SA 4.0 (cropped)
- Plastic Optical Fiber Sensors: “Polymere Seitenlichtfasern” HarzOptics GmbH / CC BY-SA 2.0 (cropped)
- Plastic Optical Fiber Fuse: “Optical fiber splicer in São Carlos-SP, Brasil 02” Sintegrity / CC BY-SA 4.0 (cropped)
- Correlation-Domain Lidar: “Lidar P1270901” David Monniaux / CC BY-SA 3.0 (cropped)
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