An analysis of the modal field in absorbing optical waveguides and some useful approximations



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Lakshminarayanan, Vasudevan and Calvo Padilla, María Luisa (1989) An analysis of the modal field in absorbing optical waveguides and some useful approximations. Journal of Physics D: Applied Physics, 22 (5). pp. 603-610. ISSN 0022-3727

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The authors present a mathematically exact formulation of the initial field striking the aperture of an absorbing optical waveguide, via an integral equation description. An analysis of the residual scattering by the waveguide is presented. Because of the presence of the non-negligible absorption coefficient, the solution for the fraction of the confined power is obtained by performing non-trivial integrations of Bessel and Hankel functions with complex arguments. In order to carry out a numerical analysis a specific computational method is applied by using an approximated polynomial expansion whose validity is also discussed.

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@ 1989 IOP Publishing Ltd.
MLC wants to thank the US-Spanish Joint Committee for Scientific and Technological Cooperation for financial support. This work was supported in part by a National Eye Institute granEtY 03674 from the National Institutes of Health, Bethesda, MD. We also acknowledge the interest and support of J M Enoch. Thanks also to Christina Vigil for working on the manuscript.

Uncontrolled Keywords:Applied Physics
Subjects:Sciences > Physics > Optics
ID Code:25784
Deposited On:13 Jun 2014 12:07
Last Modified:31 Dec 2020 00:03

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