Abstract: Determination of the surface structure using the light reflection is an important issue. The aim is to study such surface reflections using an opto-mechanical system. The effects of the fiber arrangements in the operation of an opto-pair probe system for surface profiling are described. The opto-mechanical testing system consists of a double-fiber optical probe design and an electro-mechanical scanning system. Reflection signals for the plane and cylindrical surfaces made with different curvatures and materials are investigated with both probes and the results are compared. The reflection signal for the plane surface is independent of the double-fiber orientation in probe but for the curves surfaces the reflection signal depends on the fiber direction with respect to the axial symmetry of the object surface under study. The reported system provides a simple and accurate means for the object shape study by obtaining the reflection data from the horizontal and vertical arrangements. Even though it is possible to rotate the object by 90 degree to obtain such information but in practice for real big objects it is much easier to change the fiber arrangements instead of object rotation. The novelty of the reported system is the fact that provides a great potential to analyze the curved surfaces with a one-dimensional scanning arrangement.