Abstract

We have developed a rigid hollow fiber composed of a silver-clad stainless steel pipe. The inside wall of the pipe was polished to a mirror-smooth state, and after that a cyclic olefin polymer (COP) as a transparent dielectric material was coated on the inside of the silver layer. Transmission of CO2 laser light through the hollow fiber of 20-cm length with a 0.75-mm inside diameter was 95% under straight condition, and more than 75% under the condition of a 90 deg. bend with a 4-cm bending radius. This metallic hollow fiber is not very long or flexible, but it has great mechanical strength. For this reason, this sturdy metallic hollow fiber can be used for a laser probe mounted at the tip of a long optical transmission line.

© 2007 Chinese Optics Letters

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References

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  1. J. A. Harrington, Infrared Fibers and Their Applications (SPIE Press, Bellingham, WA 2004).
  2. M. Miyagi and A. Hongo, "Hollow waveguide and method of making same" US patent 5995696 (1999).
  3. E. D. Palik, (ed.) Handbook of optical constants (Academic, Orlando, 1985).

Other

J. A. Harrington, Infrared Fibers and Their Applications (SPIE Press, Bellingham, WA 2004).

M. Miyagi and A. Hongo, "Hollow waveguide and method of making same" US patent 5995696 (1999).

E. D. Palik, (ed.) Handbook of optical constants (Academic, Orlando, 1985).

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