The chromophores in a EO polymer have to be packed in order to achieve a high density which is necessary for measurable activities. Unfortunately, at high packing, electrostatic forces between two dipoles tend to align the dipoles in an anti-parallel manner, thus their molecular dipole moments are cancelled. So site-isolation of chromophores becomes a critical factor in the design of EO materials. In our simulation, we aim to study the hyper-branched polymeric structure as an effective mean of isolating chromophores.