I think the key technology when looking at extending supplies is fissile breeding, so you probably want to look at fast neutron reactors, and since you quote the french wikipedia, I will follow suit:
https://fr.wikipedia.org/wiki/Superphénix
If you are curious about these subjects and a french speaker, there's a series on energy with many aspects of Nuclear on the french speaking youtube channel "Le Réveilleur". Jean-Marc Jancovici has also written and talked a fair bit about Nuclear in the context of energy and climate.