水野准教授が 国際会議 ICoIOS 2022 で招待講演を行いました。

7月18～19日にオンライン開催された国際会議 2nd International Conference on Innovative Optical Sensors 2022 (ICoIOS 2022) にて、水野准教授が下記招待講演（Keynote Address）を行いました。

Y. Mizuno, “Characterization and sensing applications of plastic optical fiber fuse”, 2nd International Conference on Innovative Optical Sensors 2022 (ICoIOS 2022), paper 1-1430, online, July 18-19, 2022 <invited (keynote)>.

Optical fiber fuse is the continuous self-destruction of a fiber by propagating light. High-power light propagating through the fiber results in local heating and the creation of an optical discharge that is then captured in the fiber core and travels back along the fiber toward the light source, consuming the light energy. Its properties have been well investigated only in glass fibers. In 2014, we succeeded in observing the fiber fuse in plastic optical fibers (POFs) for the first time. Since then, we have clarified the unique properties of the POF fuse, including its slow propagation velocity (1 to 2 orders of magnitude slower than that in silica fibers) and low threshold power density (1/180 of the value for silica fibers), etc. We have also shown that an oscillatory carbonized continuous curve is formed after the fuse passage, which exhibits electrical conductivity and reacts to magnetic field. Fused POFs have recently attracted considerable attention as novel optical materials, and their engineering applications have been extensively studied. In this keynote presentation, we present these interesting features of the POF fuse and its applications to high-sensitivity magnetic field sensing based on intermodal interference.