5 EASY FACTS ABOUT SLOT432 DESCRIBED

Previous to the deposition from the Er:Al2O3 Lively material, the coupling circuit, i.e., the strip waveguides, the method changeover tapers and the mode converters have been protected with a 800 nm thick layer of hydrogen silsesquioxane (HSQ, n ~1.45) to forestall their coating with the active material, as shown in Fig. 1. The HSQ cladding wa