  We address the problem of reshaping light in the Schr\"odinger optics regime
from the perspective of optimal control theory. In technological applications,
Schr\"odinger optics is often used to model a slowly-varying amplitude of a
para-axially propagating electric field where the square of the waveguide's
index of refraction is treated as the potential. The objective of the optimal
control problem is to find the controlling potential which, together with the
constraining Schr\"odinger dynamics, optimally reshape the intensity
distribution of Schr\"odinger eigenfunctions from one end of the waveguide to
the other. This work considers reshaping problems found in work due to Kunkel
and Leger, and addresses computational needs by adopting tools from the quantum
control literature. The success of the optimal control approach is demonstrated
numerically.
