Method for making Ge-Doped optical fibers having reduced brillou

Glass manufacturing – Processes of manufacturing fibers – filaments – or preforms – With measuring – controlling – sensing – programming – timing,...

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65435, 65381, 385123, C03B 37027

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058512594

ABSTRACT:
In accordance with the invention, a Ge-doped optical fiber having reduced Brillouin scattering loss is made by modulating the tension applied to the fiber during draw. The draw tension is modulated between a low range 10-50 g and a high in the range 150-250 g. The result is SBS suppression with no significant change to end-to-end fiber loss or dispersion factors.

REFERENCES:
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patent: 5681365 (1997-10-01), Gilliland et al.
Seto Katsuyuki ,"Production of NA-conversion Optical Fiber"Patent abstracts of Japan, (1990), 14 (80),P. 196.
A. Wada et al, "Suppression of the Stimulated Brillouin Scattering By Intentionally Induced Periodical Residual-Strain in Single-Mode Optical Fibers" Proceedings of the European Conference on Optical Communication (ECOC 1991), MoB1-1, pp. 25-28.
K Shiraki et al, "Suppression of Stimulated Brillouin Scattering in a Fibre by Changing the Core Radius" Electronic Letters, (1995) 31 (8), pp. 668-669.
Suda Hiroyuki, "Wire Drawing of Optical Fiber",Patent Abstracts of Japan, (1998), 12 (467.

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