In this paper, the experimental investigation of the effect of thermal annealing on the optical characteristics of Na/sup +/-K/sup +/ ion exchanged BK7 glass waveguides is reported. We have observed that the process of thermal annealing causes a variation of the refractive index profile from complementary error function to Gaussian shape already after a few annealing hours. The change is more stringent in the waveguides diffused for 5 and 10 hours and subjected to subsequent annealing. In these cases the refractive index profile exhibits a step-like change which adds to the Gaussian variation.
Secondary Ion Mass Spectrometry and Optical Characterization of Ion Exchanged Waveguides Subjected to Thermal Annealing / Ciminelli, C.; Cururachi, S.; De Sario, M.; Gerardi, C.. - STAMPA. - (1996), pp. 693-696. (Intervento presentato al convegno 8th Mediterranean Electrotechnical Conference on Industrial Applications in Power Systems, Computer Science and Telecommunications, MELECON '96 tenutosi a Bari, Italy nel May 13-16, 1996) [10.1109/MELCON.1996.551313].
Secondary Ion Mass Spectrometry and Optical Characterization of Ion Exchanged Waveguides Subjected to Thermal Annealing
C. Ciminelli;M. De Sario;
1996-01-01
Abstract
In this paper, the experimental investigation of the effect of thermal annealing on the optical characteristics of Na/sup +/-K/sup +/ ion exchanged BK7 glass waveguides is reported. We have observed that the process of thermal annealing causes a variation of the refractive index profile from complementary error function to Gaussian shape already after a few annealing hours. The change is more stringent in the waveguides diffused for 5 and 10 hours and subjected to subsequent annealing. In these cases the refractive index profile exhibits a step-like change which adds to the Gaussian variation.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
