5 SIMPLE TECHNIQUES FOR SLOT432

Previous to the deposition of the Er:Al2O3 active content, the coupling circuit, i.e., the strip waveguides, the method changeover tapers as well as the method converters ended up covered using a 800 nm thick layer of hydrogen silsesquioxane (HSQ, n ~1.forty five) to circumvent their coating Together with the Lively material, as shown in Fig.