Stainless pipe is used as the supporting tube for the infrared hollow fiber to obtain high durability and strong mechanical strength. In order to reduce roughness of inner surface of stainless tubes which causes the additional transmission loss, an acrylic-silicon resin material is used as a buffer layer to the inner wall of stainless tube for a low-loss characteristic. For the dielectric inner-coating layer, cyclic olefin polymer (COP) is used to lower the transmission loss. The COP layer is formed by using liquid-phase coating method. The hollow fiber with optimized COP inner film thickness for CO2 laser light were fabricated and reasonable transmission loss was demonstrated.
[1]Sendai Coll, Natl Inst Technol, Aoba Ku, 4-16-1 Ayashi Chuo, Sendai, Miyagi 9893128, Japan;
[2]Miyagi Gakuin, Aoba Ku, 9-1-1 Sakuragaoka, Sendai, Miyagi 9818557, Japan;
[3]Fudan Univ, Sch Informat Sci & Engn, 220 Handan Rd, Shanghai 200433, Peoples R China;
[4]Tohoku Univ, Grad Sch Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan
(8.0+极速模式)