Abstract : We design compact (a few wavelength long) and efficient (>99%) injectors for coupling light into slow Bloch modes of periodic thin film stacks and of periodic slab waveguides. The study includes the derivation of closed-form expressions for the injection efficiency as a function of the group-velocity of injected light, and the proof that 100% coupling efficiencies for arbitrary small group velocities is possible with an injector length scaling as log(c/vg). The trade-off between the injector bandwidth and the group velocity of the injected light is also considered.
Type de document :
Article dans une revue
Optics Express, Optical Society of America, 2007, 15 (10), pp.6102-6112
https://hal-iogs.archives-ouvertes.fr/hal-00846685
Contributeur : Marie-Laure Edwards
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Soumis le : vendredi 19 juillet 2013 - 16:19:11
Dernière modification le : jeudi 11 janvier 2018 - 06:26:11
Document(s) archivé(s) le : lundi 21 octobre 2013 - 11:01:24
Philippe Velha, Jean-Paul Hugonin, Philippe Lalanne. Compact and efficient injection of light into band-edge slow-modes. Optics Express, Optical Society of America, 2007, 15 (10), pp.6102-6112. 〈hal-00846685〉
