15 April 1986 Hydrogen Problems and Longterm Reliability of Fiber Cables
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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
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.
© (1986) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hiroshi Murata, Hiroshi Murata, Shozo Inao, Shozo Inao, Mikio Ogai, Mikio Ogai, } "Hydrogen Problems and Longterm Reliability of Fiber Cables", Proc. SPIE 0584, Optical Fiber Characteristics and Standards, (15 April 1986); doi: 10.1117/12.950959; https://doi.org/10.1117/12.950959

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