  We study the ground state properties of dipolar bosons in a one dimensional
dimerized optical lattice. In the limit of strong onsite repulsion i.e.
hardcore bosons, and strong dipole-dipole interaction, a stable density wave
(DW) phase is obtained at half filling as a function of lattice dimerization.
Interestingly, at quarter filling we obtain the signatures of an insulating
phase which has both the character the bond-order (BO) and the DW insulators
which we call a bond-order density wave (BODW) phase. Moreover, we show that
for a fixed hopping dimerization there occurs a BO-DW phase crossover as a
function of the dipole-dipole interaction and the BODW phase is more robust
when the hopping dimerization is stronger. We further examine the stability of
the BODW phase in the limit of finite onsite interactions.
