Smectic layer ottentation was investigated for the side chain PM10ME liquid crystal polymer to which steady sheat and large amplitude oscillatory shear (LAOS) flows were applied. Two types of orientation are achieved depending oil the shear rate gamma and the frequency omega, both of which are presumed to be inversely proportional to the time scale of shear flow. Parallel orientation with the layer normal in the velocity gradient direction is achieved by steady shear flow at gamma< 10(-1) s(-1), but the layers undulate along the neutral direction Undulation is eliminated under LAOS now at omega > 10(1), rad s(-1), which gives a transparent sample with perfect parallel orientation Shear flows tinder other conditions (steady shear at gamma> 10(-1) s(-1) and LAOS at omega < 10(1) rad s(-1)) tend to induce perpendicular orientation in which the layer normal points in the neutral direction. These iesults show that layer orientation changes from parallel to perpendicular and back to parallel with shortening time scale of sheat now These changes in orientation arc explainable if fluctuations which couple to shear flow, to induce perpendicular orientation are averaged out and suppressed under the longer - and shotter-time scale shear flows