Tolerance requirements for dispersion free single-mode fiber design: Influence of geometrical parameters, dopant diffusion, and axial dip

The dispersion sensitivity to small changes in index-differences, radius, and wavelength is investigated in the case of dispersion free single-mode fibers. If a minimum bandwidth is required, tolerances on the various parameters can then be deduced: singly- and doubly-clad structures are compared. C...

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Bibliographic Details
Published inIEEE journal of quantum electronics Vol. 18; no. 10; pp. 1490 - 1499
Main Author Francois, P.-L.
Format Journal Article
LanguageEnglish
Published IEEE 01.10.1982
Subjects
Attenuation
Bandwidth
Chromatic dispersion
Genetic expression
Germanium
Preforms
Propagation constant
Rayleigh scattering
Silicon compounds
Splicing
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Summary:The dispersion sensitivity to small changes in index-differences, radius, and wavelength is investigated in the case of dispersion free single-mode fibers. If a minimum bandwidth is required, tolerances on the various parameters can then be deduced: singly- and doubly-clad structures are compared. Constant reference is made to the HE 11 mode spot-size to relate dispersion properties and attenuation. A nonzero fundamental mode cutoff is shown to induce an enhanced sensitivity to a change in fiber geometrical characteristics. The effect of dopant diffusion and axial dip on dispersion is then considered and conclusions are drawn concerning the use of profiles measured on preforms to predict fiber propagation properties.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.1982.1071406