Loss reduction in fluorine-doped SM- and high N.A.-PCVD fibers
- 1 July 1986
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Journal of Lightwave Technology
- Vol. 4 (7) , 813-817
- https://doi.org/10.1109/jlt.1986.1074805
Abstract
SM and GI fibers have been prepared by the low-pressure PCVD process using fluorine as the main dopant and small amounts of GeO 2 as codopant. Compared to pure fluorine doping, these fibers showed markedly improved optical properties. High N.A. ( \delta \approx 2 percent) GI fibers with Rayleigh scattering losses as low as 1.0 dB μm 4 / km as well as "deeply depressed cladding" SM fibers with scattering coefficients of 0.85 dB μm 4 /km have been prepared. Simultaneously, a reduced sensitivity of the optical losses on the drawing conditions and improved mechanical properties have been observed.Keywords
This publication has 3 references indexed in Scilit:
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