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Proceedings Paper

Hydrogen Problems and Longterm Reliability of Fiber Cables
Author(s): Hiroshi Murata; Shozo Inao; Mikio Ogai
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Paper Abstract

Fiber losses increase if hydrogen diffuses inside fibers. The following four methods are effective in preventing these loss increases. (1) Do not use P205 as a dopant, or use a minimum amount if it is used. (2) Use fluorine as a dopant. (3) Use a synthetic cladding layer. (4) Carefully select the material to cover fibers. Plastic materials that do not generate H2 should be selected for cables. Generally, UV curable resines generate less H2 as materials to cover fibers. Using these conditions, loss increases of GI fibers and SM fibers with H2 1 atm., 20 °C at 1.3 and 1.55 μm in 25 years will be <0.01 dB/km.

Paper Details

Date Published: 15 April 1986
PDF: 8 pages
Proc. SPIE 0584, Optical Fiber Characteristics and Standards, (15 April 1986); doi: 10.1117/12.950959
Show Author Affiliations
Hiroshi Murata, The Furukawa Electric Co., Ltd. (Japan)
Shozo Inao, The Furukawa Electric Co., Ltd. (Japan)
Mikio Ogai, The Furukawa Electric Co., Ltd. (Japan)


Published in SPIE Proceedings Vol. 0584:
Optical Fiber Characteristics and Standards
Remy Bouillie, Editor(s)

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