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>A perturbation approach to the propagation characteristics of inhomogeneous optical fibres with deformed core boundaries
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A perturbation approach to the propagation characteristics of inhomogeneous optical fibres with deformed core boundaries
The propagation characteristics of inhomogeneous optical fibres with different types of deformed core boundaries are analysed by a perturbative approach based on the scalar wave equation. The influence of the core deformation on the propagation constants and group delays is studied in detail for the truncated parabolic profile. We can conclude from this analysis that the difference in group delays due to deviation from circularity does not cause any difficult tolerance problems for realistic deformations and is generally negligible for practical optical fibres.
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