Flexible hollow fibers with 530-mu m-bore size were developed for infrared laser delivery. Sturdy hollow fibers were fabricated by liquid-phase coating techniques. A silica glass capillary is used as the substrate. Acrylic silicone resin is used as a buffer layer and the buffer layer is firstly coated on the inner surface of the capillary to protect the glass tube from chemical damages due to the following silver plating process. A silver layer was inner-plated by using the conventional silver mirror-plating technique. To improve adhesion of catalyst to the buffer layer, a surface conditioner has been introduced in the method of silver mirror-plating technique. We discuss improvement of transmission properties of sturdy polymer-coated silver hollow fibers for the Er: YAG laser and red pilot beam delivery.
[1]Natl Inst Technol, Sendai Coll, Aoba Ku, 4-16-1 Ayashi Chuo, Sendai, Miyagi 9893128, Japan;
[2]Fudan Univ, Sch Informat Sci & Engn, 220 Handan Rd, Shanghai 200433, Peoples R China;
[3]Tohoku Univ, Grad Sch Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan
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