Perturbation theory for the evaluation of the normalised cutoff frequencies in radially inhomogeneous fibres
作者： J.P. Meunier , J. Pigeon , J.N. Massot
DOI: 10.1049/EL:19800023
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摘要: A simple perturbation theory has been used to study the normalised cutoff frequencies of radially inhomogeneous fibres. The formalism developed with a truncated parabolic-index profile as zero-order solution. Numerical calculations have carried out for α-profiles and found be in good agreement more rigorous approaches reported by previous authors.
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