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Influence of H2-treatment and water content on the recovery characteristics of undoped core fibers after pulsed and continuous irradiation

: Klein, K.-F.; Mühlich, A.; Wörner, K.H.; Henschel, H.; Köhn, O.; Schmidt, H.U.

Greenwell, R.A. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Optical devices in adverse environments : 16.-20.11.1987, Cannes/France
Bellingham/Wash.: SPIE, 1988 (Proceedings of SPIE 867)
ISBN: 0-89252-902-4
pp.129-135 : Abb.,Tab.,Lit.
Society of Photo-Optical Instrumentation Engineers (Conference) <1987, Cannes>
Conference Paper
Fraunhofer INT ()
hydrogen-treatment; optical fibres; radiation induced loss; water-content

The OH-content of an undoped core all-glass fiber is modified within the range from 1 to 100 ppm. At 860 nm wavelength the radiation resistance expressed by recovery coefficient in the long-term annealing after pulsed irradiation (10 ms - 10 s) increases with increasing water-content and with additional hydrogen-treatment. At 1310 nm wavelength the induced loss at short times after the radiation pulse is smaller due to hydrogen-treatment. The long-term recovery decreases with increasing OH-content, in contrast to 860 nm. (INT)