Enhanced photonic integrated circuits (PIC) are required for the current demand of flexibility and reconfigurability in telecommunications networks. Thus, an extensive characterization and testing is necessary to provide an accurate prediction of the PIC performance. The use of spatial light modulator (SLM) as a diffractive device to reconstruct images from computer generated holograms (CGH) allows to modulate the wave form of a light beam. In this study is proposed the use of the SLM technology as a flexible platform for feeding photonic integrated processors. Preliminary results were obtained, to produce a multiplexing/demultiplexing CGH to be applied into an optical chip for data compression based on Haar wavelet transform.