Path integral analysis of the exponentially tapered optical waveguide

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The Feynman path integral is used to describe paraxial propagation in an exponentially tapered graded-index optical waveguide. Expressions are obtained for both the propagator and for the ground state to ground state coupling efficiency of this tapered waveguide. It is shown that the predictions of this calculation for the Gaussian beam waist are in accord with those of a previous more conventional analysis of the problem.
Original languageEnglish
Pages (from-to)1048-1052
Number of pages5
JournalJournal of Physics D: Applied Physics
Issue number7
Publication statusPublished - 14 Jul 1992


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