MxN wavelength selective switches using beam splitting by space light modulators

We propose a multiple input and multiple output wavelength selective switch (MxN WSS) with an optical configuration that uses a single diffractive optics deflector. In the proposed WSS, broadcast-and-select functionality is achieved by multi-angle diffraction and control of diffraction angle using the phase modulation patterns on a spatial light modulator such as liquid crystal on silicon (LCOS). The experimental results show that a 5×5 WSS using the spatial modulation patterns designed using the computer-generated hologram (CGH) technique works well.