Feasibility of holographic off-plane waveguide coupler for coupling optical beams to photopolymer waveguide

摘要

In this paper, we investigate photopolymer based holographic off-plane coupler experimentally. In our scheme, holograms are recorded inside the photopolymer slab waveguide by two-beam interference. The optical beams are vertically coupled into the waveguide through the recording position over the polymer substrate. The coupled optical beam propagates in the photopolymer slab waveguide. The beam profile radiated from the cut end of the waveguide and measured energy transfer efficiency are presented.