Ahead of the deposition from the Er:Al2O3 Energetic substance, the coupling circuit, i.e., the strip waveguides, the manner transition tapers as well as the manner converters were being coated by using a 800?nm thick layer of hydrogen silsesquioxane (HSQ, n?~one.forty five) to avoid their coating with the active materials, as proven in Fig. 1. The… Read More