Fabrication and characterization of optical planar waveguides activated by erbium ions for 1.5-µm applications

Alessandro Chiasera; Maurizio Ferrari; Luca Zampedri; Maurizio Mattarelli; Maurizio Montagna; Herve Portales; Cristiana Tosello; Sandra Dire; Stefano Pelli; Giancarlo C. Righini

doi:10.1117/12.549920

18 August 2004 Fabrication and characterization of optical planar waveguides activated by erbium ions for 1.5-μm applications

Alessandro Chiasera, Maurizio Ferrari, Luca Zampedri, Maurizio Mattarelli, Maurizio Montagna, Herve Portales, Cristiana Tosello, Sandra Dire, Stefano Pelli, Giancarlo C. Righini

Author Affiliations +

Proceedings Volume 5451, Integrated Optics and Photonic Integrated Circuits; (2004) https://doi.org/10.1117/12.549920
Event: Photonics Europe, 2004, Strasbourg, France

Abstract

Recent results obtained for SiO₂-HfO₂: Er³⁺ and SiO₂-TiO₂: Er³⁺-Yb³⁺ waveguides are presented. (100-x)SiO₂-xHfO₂ (x = 10, 20, 30, 40 mol) planar waveguides, doped with 0.01 and 0.3 mol % Er³⁺ ions were prepared by sol-gel route, using dip-coating deposition on v-SiO₂ substrates. The waveguides were characterized by m-line, Raman and photoluminescence spectroscopy. The spectral shape of the band assigned to the ⁴I_13/2->⁴I_15/2 transition does not change practically with the hafnium and erbium content. The ⁴I_13/2 level decay curves present a single-exponential profile, with a lifetime between 5.5 and 7.1 ms, for the 0.3 mol% doped samples, and between 8.5 and 6.6 ms for the 0.01 mol% doped samples. The SiO₂-TiO₂: Er³⁺-Yb³⁺ waveguides were prepared by rf-sputtering technique. All waveguides were single-mode at 1550 nm. The losses, for the TE0 mode, were evaluated at 632.8 and 1300 nm and an attenuation coefficient equal or lower than 0.2 dB/cm was measured both at 632.8 nm and 1300 nm. The emission of ⁴I_13/2->⁴I_15/2 of Er³⁺ ion transition was observed upon excitation in the TE0 mode at 981 and 514.5 nm. Back energy transfer from Er³⁺ to Yb³⁺ was demonstrated by measurement of Yb³⁺ emission upon Er³⁺ excitation at 514.5 nm. Photoluminescence excitation spectroscopy was used to obtain information about the effective excitation efficiency of Er³⁺ ions by co-doping with Yb³⁺ ions.

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Alessandro Chiasera, Maurizio Ferrari, Luca Zampedri, Maurizio Mattarelli, Maurizio Montagna, Herve Portales, Cristiana Tosello, Sandra Dire, Stefano Pelli, and Giancarlo C. Righini "Fabrication and characterization of optical planar waveguides activated by erbium ions for 1.5-μm applications", Proc. SPIE 5451, Integrated Optics and Photonic Integrated Circuits, (18 August 2004); https://doi.org/10.1117/12.549920

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