R. Ramponi et al., New Er-doped phosphate glass for ion-exchange active waveguides: accurate determination of the refractive index, OPT MATER, 14(4), 2000, pp. 291-296
The optical properties of a new Er-doped glass for ion-exchange active wave
guides have been characterized, including fluorescence lifetime, Ag-Na diff
usion coefficient, and refractive index. In particular, the Sellmeier curve
was determined from the visible to the near infrared by means of a non-con
ventional method based on the measurement of the output angle of radiation
modes propagating within the substrate. An accuracy of about 1 x 10(-4) for
the determination of the refractive index is obtained. (C) 2000 Elsevier S
cience B.V. All rights reserved.