Hollow fibers for CO<sub>2</sub> laser light have been fabricated with a cyclic olefin polymer as the inner dielectric. A film of cyclic olefin polymer was coated inside the glass capillary tubing by a simple liquid-flowing process. A polymer-coated fiber with a 700-µm bore showed a loss of 0.06 dB/m for CO<sub>2</sub> laser light because cyclic olefin polymer has low absorption at a 10.6-µm wavelength.
© 1998 Optical Society of America
(060.2290) Fiber optics and optical communications : Fiber materials
(060.2390) Fiber optics and optical communications : Fiber optics, infrared
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3470) Lasers and laser optics : Lasers, carbon dioxide
(230.7370) Optical devices : Waveguides
Yukio Abe, Yuji Matsuura, Yi-Wei Shi, You Wang, Hiroshi Uyama, and Mitsunobu Miyagi, "Polymer-coated hollow fiber for CO2 laser delivery," Opt. Lett. 23, 89-90 (1998)