田村君（M1）と北村さん（OG）の論文が Japanese Journal of Applied Physics に受理されました。

プラスチック光ファイバ・ブラッグ・グレーティングを用いた屈折率センシングの可能性を実証した田村君（M1）と北村さん（OG）の論文が、Japanese Journal of Applied Physics に受理されました。

A. Tamura, N. Kitamura, A. Ioannou, K. Kalli, H. Lee, and Y. Mizuno, “Refractive index sensing based on scattering-mediated spectral shifts in polymer fiber gratings,” Jpn. J. Appl. Phys., accepted.

Refractive index sensing using a fiber grating inscribed in a perfluorinated gradedindex polymer optical fiber is experimentally demonstrated based on wavelengthdomain interrogation of scattering-mediated spectral shifts. When liquids with different refractive indices are deposited onto the grating region, a systematic shift of a scattering-related dip wavelength is observed in the transmitted spectrum. The dip wavelength shifts monotonically toward longer wavelengths as the refractive index increases from 1.33 to 1.44, with a total shift of approximately 0.7 nm. These results demonstrate the feasibility of refractive index sensing using polymer fiber gratings through wavelength-domain analysis of scattering-mediated spectral shifts.