  We propose an experiment to test the uniform-Berry-curvature picture of
composite fermions. We show that the asymmetry of geometrical resonances
observed in a periodically modulated composite fermion system can be explained
with the uniform-Berry-curvature picture. Moreover, we show that an alternative
way of modulating the system, i.e., modulating the external magnetic field,
will induce an asymmetry opposite to that of the usual periodic grating
modulation which effectively modulates the Chern-Simons field. The experiment
can serve as a critical test of the uniform-Berry-curvature picture, and probe
the dipole structure of composite fermions proposed by Read.
