Ion-exchanged planar waveguides in different ER3+-doped tellurite glasses

Gualtiero Nunzi Conti; Victor K. Tikhomirov; B. Chen; S. Berneschi; Massimo Brenci; Stefano Pelli; Angela B. Seddon; Marco Bettinelli; Adolfo Speghini; Giancarlo C. Righini

doi:10.1117/12.478342

17 June 2003 Ion-exchanged planar waveguides in different Er³⁺-doped tellurite glasses

Gualtiero Nunzi Conti, Victor K. Tikhomirov, B. Chen, S. Berneschi, Massimo Brenci, Stefano Pelli, Angela B. Seddon, Marco Bettinelli, Adolfo Speghini, Giancarlo C. Righini

Author Affiliations +

Proceedings Volume 4990, Rare-Earth-Doped Materials and Devices VII; (2003) https://doi.org/10.1117/12.478342
Event: Integrated Optoelectronics Devices, 2003, San Jose, CA, United States

Abstract

Er³⁺doped tellurite glasses have recently gained interest because of broad emission band in 1.5 μm telecom window. In this paper we present results of our research aiming at the fabrication of surface waveguides in these glasses. Tungsten-tellurite and zinc-tellurite glasses doped with various Er₂O₃ percentages have been prepared and the glass stability has been assessed based on difference between T_g and T_c (and T_m) when changing glass modifiers. Broad emission and absorption bands corresponding to transition between ⁴I_13/2↔⁴I_15/2 were observed as expected. Lifetimes of the ⁴I_13/2 level were also measured. Ag⁺-Na⁺ ion-exchange was performed with a molten salt composition based on AgNO₃, KNO₃ and NaNO₃. Surface quality of the processed samples was analyzed in order to assess the homogeneity and chemical durability of the surface waveguides. Waveguiding was successfully obtained in both types of glasses and the process was characterized with the prism coupling technique. Several propagation modes at different wavelengths were detected and the diffusion process was characterized for the different concentrations of erbium ions.

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Gualtiero Nunzi Conti, Victor K. Tikhomirov, B. Chen, S. Berneschi, Massimo Brenci, Stefano Pelli, Angela B. Seddon, Marco Bettinelli, Adolfo Speghini, and Giancarlo C. Righini "Ion-exchanged planar waveguides in different Er³⁺-doped tellurite glasses", Proc. SPIE 4990, Rare-Earth-Doped Materials and Devices VII, (17 June 2003); https://doi.org/10.1117/12.478342

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