Just before the deposition from the Er:Al2O3 Energetic substance, the coupling circuit, i.e., the strip waveguides, the manner changeover tapers as well as the method converters ended up included having a 800 nm thick layer of hydrogen silsesquioxane (HSQ, n ~1.forty five) to forestall their coating with the active materials, https://johnu009mao5.sunderwiki.com/user