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Failure of the scalar approximation near cutoff frequency of a step-index fiber mode

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1 Author(s)
Romanova, E.A. ; Saratov State Univ., Russia

The feasibility of the scalar approximation used in the theory of weakly-guiding optical fibers is considered near the cutoff frequency of the HE1n(LP0n) mode. The asymptotic behavior of polarisation corrections for transverse and longitudinal wavenumbers of a lossy fiber mode is investigated both analytically and numerically. These results as well as the transmittance calculated for an irregular fiber consisting of single-mode and bimodal segments demonstrate the failure of scalar approximation near the cutoff frequency

Published in:

Transparent Optical Networks, 2001. Proceedings of 2001 3rd International Conference on

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