| US 7,486,863 B2 | ||
| Method for treating optical fiber and apparatus for treating optical fiber | ||
| Takahiro Hamada, Sakura (Japan); Munehisa Fujimaki, Sakura (Japan); Kenji Yamashiro, Sakura (Japan); Koichi Harada, Sakura (Japan); Yukinari Shirako, Sakura (Japan); and Hiroyuki Sawano, Sakura (Japan) | ||
| Assigned to Fujikura Ltd., Tokyo (Japan) | ||
| Filed on Jun. 20, 2006, as Appl. No. 11/455,690. | ||
| Application 11/455690 is a continuation of application No. PCT/JP2004/001803, filed on Feb. 18, 2004. | ||
| Claims priority of application No. 2003-424632 (JP), filed on Dec. 22, 2003. | ||
| Prior Publication US 2006/0233502 A1, Oct. 19, 2006 | ||
| Int. Cl. G02B 6/02 (2006.01) | ||
| U.S. Cl. 385—123 [385/110; 385/115] | 8 Claims |
| 1. A method of treating optical fiber, wherein a deuterium-containing gas can be repeatedly used for treating optical fiber
comprising:
a first step of creating a reduced-pressure atmosphere in a space which holds an optical fiber, a second step of introducing
to the space a deuterium-containing gas from a deuterium storage tank so as to expose the optical fiber to the gas, and
a third step of retrieving the deuterium-containing gas within the space to the deuterium storage tank.
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