赤外放射温度計を用いて光ファイバの破断点を検出する手法に関する水野助教と萩原(M2)の論文が Applied Physics Express に掲載されました。本論文は、東レ、豊橋技科大、農工大、首都大との共同研究の成果です。

Y. Mizuno, S. Hagiwara, H. Lee, Y. Ochi, T. Matsui, Y. Matsumoto, Y. Tanaka, H. Nakamura, and K. Nakamura, “Infrared thermometry for breakage detection of optical fibers embedded in structures,” Appl. Phys. Express, vol. 12, no. 6, 062007 (2019).

We show that infrared thermometry can be used to detect a breakage point of an optical fiber embedded in a structure. Around the breakage point, incident light induces heat, which is detected using an infrared thermometer. By this method, we can obtain the position information of a breakage point, including the accurate information where it is located in the actual structure, on a real-time basis. We experimentally show the practical usefulness of this method by detecting a breakage point of an optical fiber embedded in a composite structure comprising carbon fiber-reinforced plastics.