Abstract
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 language | English |
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| Pages (from-to) | 1048-1052 |
| Number of pages | 5 |
| Journal | Journal of Physics D: Applied Physics |
| Volume | 25 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 14 Jul 1992 |