[14p-C42-1~21] 3.4 Biomedical optics

△ [14p-C42-8] Infrared thermal imaging by using bundled tube-leaky hollow optical fibers

〇(M2)Takuya Kobayashi¹, Takashi Katagiri², Yuji Matsuura¹ (1.Graduate School of Biomedical Engineering, Tohoku Univ., 2.Graduate School of Engineering, Tohoku Univ.)

Keywords:Tube-leaky waveguide, Glass drawing technique, Infrared thermal imaging

Bundles of all-dielectric, tube-leaky optical fibers are proposed and developed for endoscopic infrared-thermal imaging. Borosilicate thin bundled fibers of 90-cm long with pixel size less than 80 µm are fabricated by glass drawing technique. The transmission loss of fiber is optimized for delivery of mid-infrared light around 3-4 µm wavelength by carefully controlling the glass wall thickness of each pixels and thermal imaging using the bundled fiber is performed by using an infrared camera.