Hydrogen Problems and Longterm Reliability of Fiber Cables

Hiroshi Murata; Shozo Inao; Mikio Ogai

doi:10.1117/12.950959

15 April 1986 Hydrogen Problems and Longterm Reliability of Fiber Cables

Hiroshi Murata, Shozo Inao, Mikio Ogai

Proceedings Volume 0584, Optical Fiber Characteristics and Standards; (1986) https://doi.org/10.1117/12.950959
Event: 1985 International Technical Symposium/Europe, 1985, Cannes, France

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.

Citation Download Citation

Hiroshi Murata, Shozo Inao, and Mikio Ogai "Hydrogen Problems and Longterm Reliability of Fiber Cables", Proc. SPIE 0584, Optical Fiber Characteristics and Standards, (15 April 1986); https://doi.org/10.1117/12.950959

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