  We fabricate superconductor-graphene-superconductor Josephson junctions with
superconducting regions made of lead (Pb). The critical current through
grapehene may be modulated by external magnetic field; the resulting Fraunhofer
interference pattern shows several periods of oscillations, indicating that the
junction is uniform. Deviations from the perfect Fraunhofer pattern are
observed, and their cause is explained by a simulation that takes into account
the sample design.
