  Resistance oscillations in electronic Fabry-Perot interferometers near
fractional quantum Hall (FQH) filling factors 1/3, 2/3, 4/3 and 5/3 in the
constrictions are compared to corresponding oscillations near integer quantum
Hall (IQH) filling factors in the constrictions, appearing in the same devices
and at the same gate voltages. Two-dimensional plots of resistance versus gate
voltage and magnetic field indicate that all oscillations are Coulomb
dominated. Applying a Coulomb charging model yields an effective tunneling
charge e* \approx e/3 for all FQH constrictions and e* \approx e for IQH
constrictions. Surprisingly, we find a common characteristic temperature for
FQH oscillations and a different common characteristic temperature for IQH
oscillations.
