北村さん（B4）の論文が Japanese Journal of Applied Physics に掲載されました。

グレーティング数を極端に減らしたプラスチック光ファイバ・ブラッグ・グレーティングによる接触センシングを実証した北村さん（B4）の論文が、Japanese Journal of Applied Physics に掲載されました。

N. Kitamura, H. Javid, S. Watanabe, R. Jha, H. Lee, and Y. Mizuno, “Polymer optical fiber tactile sensing enabled by minimal grating structures,” Jpn. J. Appl. Phys., vol. 64, no. 2, 028002 (2025).

We are developing tactile sensors using fiber Bragg gratings (FBGs) inscribed in perfluorinated graded-index polymer optical fibers (PFGI-POFs). Until now, the effectiveness of tactile sensing has only been demonstrated with PFGI-POF samples containing 500 gratings. In this study, we significantly reduce the number of gratings and show that even a PFGI-POF sample with just one grating can function as a tactile sensor, although with some performance limitations. By comparing samples with 1 and 10 gratings, we observe that while the sensor performance improves with more gratings, both configurations can detect tactile inputs.