  The light curves of gamma-ray pulsars detected by the Fermi Large Area
Telescope show great variety in profile shape and position relative to their
radio profiles. Such diversity hints at distinct underlying magnetospheric
and/or emission geometries for the individual pulsars. We implemented an
offset-dipole magnetic field in an existing geometric pulsar modelling code
which already includes static and retarded vacuum dipole fields. In our model,
this offset is characterised by a parameter epsilon (with epsilon = 0
corresponding to the static dipole case). We constructed sky maps and light
curves for several pulsar parameters and magnetic fields, studying the effect
of an offset dipole on the resulting light curves. A standard two-pole caustic
emission geometry was used. As an application, we compared our model light
curves with Fermi data for the bright Vela pulsar.
