Résumé
Ľefficacité de couplage théorique entre un guide ďonde confiné et une fibre optique monomode par ľintermédiaire ďune lentille boule est optimisée en faisant varier les différents paramètres du système optique : positions relatives des éléments, indice de réfraction et diamètre de la lentille. Les calculs sont effectués numériquement grâce à un logiciel spécifique en approximant les distributions des champs à coupler par des profils gaussiens. Les pertes dues aux erreurs de positionnement des éléments guidants par rapport à leur position idéale sont ensuite évaluées. Tous ces résultats sont confrontés aux résultats obtenus dans le cas ďun couplage direct (sans lentille intermédiaire).
Abstract
Theoretical coupling efficiency between a channel waveguide and a single-mode optical fibre using a ball lens is optimized by varying the parameters of the optical system such as the relative position of the components, the refractive index and the size of the lens. A specific software has been used for the optimization. Numerical calculations have been done under the Gaussian approximation of the fields distributions. The losses due to waveguides misalignments with respect to their ideal position have been evaluated. All these theoretical results are compared with those obtained from buttcoupling.
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Ramos, M., Verrier, I., Bellil, H. et al. Optimisation de ľefficacité de couplage entre un guide ďonde confiné et une fibre optique monomode par ľintermédiaire ďune lentille boule. Ann. Télécommun. 47, 377–382 (1992). https://doi.org/10.1007/BF02995883
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DOI: https://doi.org/10.1007/BF02995883
Mots clés
- Couplage optique
- Fibre optique unimodale
- Guide onde optique
- Lentille optique
- Forme sphérique
- Alignement
- Optimisation