  In this paper, we address the impact of multiple fiber bends on orbital
angular mode (OAM) mode propagation in a fiber. In particular, we extend the
OAM mode-mixing due to a single-fiber bend studied earlier in detail for the
step-index fiber, to the case of a succession of bends. The bends may have
relative orientation with respect to each other. Analytic expressions leading
to crosstalk are given. The OAM mode intensity at the output of a pair of bends
is especially studied with emphasis on the intensity pattern changes that arise
from the changes in the relative orientation of the bends.
