Optical tunnelling: Radiation losses in bent fibre-optic waveguides

William L. Kath*, Gregory A. Kriegsmann

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


We present a new method for determining the radiation losses produced when a weakly-guiding optical fibre is bent. In contrast to previous work, we make no assumptions about the type of bending allowed; the centreline of the fibre is allowed to follow any path in three-dimensionalspace. In particular, the method clearly shows the effects due both to curvature andto torsion.In addition, the result we obtain contains a detailed description of the distribution of theradiated energy.

Original languageEnglish (US)
Pages (from-to)85-103
Number of pages19
JournalIMA Journal of Applied Mathematics (Institute of Mathematics and Its Applications)
Issue number2
StatePublished - 1988

ASJC Scopus subject areas

  • Applied Mathematics


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