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Planar step-index waveguides obtained via sol-gel synthesis from organometallic precursors

AuthorsRey-García, F.; Flores Arias, M. Teresa; Gómez-Reino, Carlos; Fuente, Germán F. de la; Assenmacher, W.; Mader, W.
Sol–gel synthesis
Issue Date2013
CitationJournal of Sol-Gel Science and Technology 68(1): 39-45 (2013)
AbstractInorganic and hybrid sols obtained from Si, Ti, Zr and Ce organometallic precursors were used to prepare single and multilayer coatings with different thicknesses. Planar step-index waveguides with different refractive indices were thus prepared by dip-coating the above sols onto commercial soda-lime glass substrates, followed by appropriate thermal annealing. The resultant coatings were characterized by transmission electron microscopy and energy dispersive X-ray spectrometry to elucidate the interface and bonding between the sol-gel derived coatings and the glass substrates. Diffusion of alkali and alkaline earth elements from the glass into the coating layer was confirmed and proposed to play a role in the coating-substrate bonding, inducing excellent optical quality planar interfaces. Optical waveguide characterization performed on a 4.15 μm thick hybrid SiO2:CeO2 (95:5) step-index waveguide yielded losses of 1.50 dB/cm. © 2013 Springer Science+Business Media New York.
Identifiersdoi: 10.1007/s10971-013-3131-5
issn: 0928-0707
e-issn: 1573-4846
Appears in Collections:(ICMA) Artículos
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