  We classify all (saturated) fusion systems on bicyclic 2-groups. Here, a
bicyclic group is a product of two cyclic subgroups. This extends previous work
on fusion systems on metacyclic 2-groups (see [Craven-Glesser, 2012] and
[Sambale, 2012]). As an application we prove Olsson's Conjecture for all blocks
with bicyclic defect groups.
