Ahead of the deposition from the Er:Al2O3 Energetic product, the coupling circuit, i.e., the strip waveguides, the method changeover tapers and the mode converters ended up included having a 800 nm thick layer of hydrogen silsesquioxane (HSQ, n ~1.45) to avoid their coating with the active materials, as proven in Fig. 1. The HSQ cladding was d… Read More