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Proceedings Paper

Optical and spectroscopic characterization of Er/Yb-activated planar waveguides
Author(s): Stefano Pelli; Massimo Brenci; Matteo Fossi; Giancarlo C. Righini; Claire Duverger; Maurizio Montagna; Raffaella Rolli; Maurizio Ferrari
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Paper Abstract

Soda-lime silicate glasses doped with different percentages of Er- and Yb-oxides were produced by melting, and both planar and channel waveguides were fabricated by diluted silver ion exchange. Their optical and spectroscopic properties have been investigated, and some results are reported here. The optical parameters such as refractive index, diffusion depth and number of modes were measured by m-line technique. Absorption and fluorescence spectra were also measured; particular attention was focused on upconversion phenomena. The upconversion luminescence spectra of an Er/Yb-activated waveguide were obtained by continuous-wave excitation at 514.5 nm, as a function of the excitation power. The weak upconversion bands are assigned to the 2H9/2 yields 4I15/2 and 4G11/2 yields 4I15/2 transitions of the Er3+ ion. The upconversion mechanism is found to be a two-photon process. Preliminary results of gain measurements in channel waveguides showed signal enhancement at 1.5 micrometers , for high input signal intensities, upon pumping at 0.98 micrometers .

Paper Details

Date Published: 13 April 2000
PDF: 7 pages
Proc. SPIE 3942, Rare-Earth-Doped Materials and Devices IV, (13 April 2000); doi: 10.1117/12.382851
Show Author Affiliations
Stefano Pelli, IROE (Italy)
Massimo Brenci, IROE (Italy)
Matteo Fossi, IROE (Italy)
Giancarlo C. Righini, IROE (Italy)
Claire Duverger, Univ. degli Studi di Trento (France)
Maurizio Montagna, Univ. degli Studi di Trento (Italy)
Raffaella Rolli, Univ. degli Studi di Trento (Italy)
Maurizio Ferrari, Ctr. Fisica Stati Aggregati (Italy)

Published in SPIE Proceedings Vol. 3942:
Rare-Earth-Doped Materials and Devices IV
Shibin Jiang, Editor(s)

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