Title :
Secondary ion mass spectrometry and optical characterization of ion exchanged waveguides subjected to thermal annealing
Author :
Ciminelli, C. ; Cururachi, S. ; Sario, M. De ; Gerardi, C.
Author_Institution :
Dipartimento di Elettrotecnica ed Elettronica, Politecnico di Bari, Italy
Abstract :
In this paper, the experimental investigation of the effect of thermal annealing on the optical characteristics of Na+-K+ 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
Keywords :
annealing; diffusion; ion exchange; optical fabrication; optical glass; optical waveguides; potassium; refractive index; secondary ion mass spectroscopy; sodium; 5 to 10 h; Gaussian variation; Na-K; Na+-K+ ion exchanged BK7 glass waveguides; annealing hours; complementary error function; diffusion; ion exchanged waveguides; optical characterization; refractive index profile; secondary ion mass spectrometry; step-like change; thermal annealing; Annealing; Glass; Mass spectroscopy; Optical refraction; Optical variables control; Optical waveguides; Particle beam optics; Refractive index; Shape; Waveguide transitions;
Conference_Titel :
Electrotechnical Conference, 1996. MELECON '96., 8th Mediterranean
Conference_Location :
Bari
Print_ISBN :
0-7803-3109-5
DOI :
10.1109/MELCON.1996.551313
