Prior to the deposition of the Er:Al2O3 active material, the coupling circuit, i.e., the strip waveguides, the manner transition tapers as well as the mode converters have been lined that has a 800 nm thick layer of hydrogen silsesquioxane (HSQ, n ~1.45) to circumvent their coating While using the Lively https://annelis752pvc9.wikirecognition.com/user