プラスチック光ファイバセンサのアニール処理による温度感度向上に関する河（M2）の論文が Japanese Journal of Applied Physics に掲載されました。
T. Kawa, G. Numata, H. Lee, N. Hayashi, Y. Mizuno, and K. Nakamura, “Temperature sensing based on multimodal interference in polymer optical fibers: Room-temperature sensitivity enhancement by annealing,” Jpn. J. Appl. Phys., vol. 56, no. 7, 078002 (2017).
To date, we have developed a temperature sensor based on multimodal interference in a polymer optical fiber (POF) with an extremely high sensitivity. Here, we experimentally evaluate the influence of annealing (heat treatment) of the POF on the temperature sensitivity at room temperature. We show that the temperature sensitivity is enhanced with increasing annealing temperature, and that, by annealing the POF at 90°C, we can achieve a temperature sensitivity of +2.17 nm/°C, which is 2.9 times larger than that without annealing (+0.75 nm/°C).