The light-induced orientation of azobenzene side groups of a polybutadiene based liquid crystalline polymer was studied. The polymer is based on HO-terminated telechelic polybutadiene Krasol LBH 3000 grafted with 5-(4-{[4-(octyloxy)phenyl]azo}phenoxy)pentane-1-thiol units. Linearly polarized light of wavelengths 325, 365 and 488nm influenced the photoorientation process. While irradiation with the 325 and 488nm light generated optical anisotropy, UV light of 365nm resulted in isotropic films. Pre-irradiation with the 365nm light and subsequent irradiation with 325nm led to dichroic ratio of about R D =11. Further irradiation with 365nm erased the anisotropy again.