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Verres et guides d'onde de fluorozirconates dopes Er3+ ou Tm3+- applications a l'amplification optique

Abstract : Low phonon-energy glasses, like fluorozirconate glasses, are interesting materials for their potential in active optics, especially for amplifier and laser systems. In the telecommunication field, there is an ever-increasing demand for integrated optical systems to be implemented in high-bit-rate local and metropolitan networks. In this context, planar waveguides were realised by F-/Cl- ion-exchange on ZBLA (ZrF4-BaF2-LaF3-AlF3) glasses for optical amplification in the C-band (1530-1560 nm). Time and temperature parameters have been determined in order to obtain single-mode propagation of light at 1,55 µm in a planar waveguide. Then, channel waveguides have been obtained by a photolithography process, adapted to fluoride glasses, using a silica mask. Opto-geometric parameters were measured. Spectroscopic properties of Er3+-doped glasses were studied in order to determine the key parameters of the optical amplifier at 1,55 µm. To take advantage of high-power laser diode at 980 nm for pumping, we used Er3+/Ce3+ and Er3+/Yb3+ co-doped waveguides. Energy transfers in co-doped systems were efficient. "On/off" gain of 3,9 dB/cm was demonstrated at 1530 nm in a single mode channel waveguide co-doped with Er3+/Ce3+, with linear pump-power dependence. Propagation losses were estimated to be in the 0,3 dB/cm range at 1,58 µm. These encouraging results allow to envisage a future development of theses amplifier systems. ZBLAN (ZrF4-BaF2-LaF3-AlF3-NaF) bulk Tm3+-doped glasses were also studied to obtain laser emission around 1,8 µm. A slope efficiency was found equal to η = 8,6 % and the threshold of incident pump power was around 130 mW, for a 3% Tm3+-doped glass with a 4 mm thickness, with excitation at λ = 792 nm.
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https://tel.archives-ouvertes.fr/tel-00006276
Contributor : Herve Haquin <>
Submitted on : Thursday, June 17, 2004 - 4:33:13 AM
Last modification on : Friday, February 26, 2021 - 2:07:15 PM
Long-term archiving on: : Wednesday, November 23, 2016 - 4:54:46 PM

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  • HAL Id : tel-00006276, version 1

Citation

Herve Haquin. Verres et guides d'onde de fluorozirconates dopes Er3+ ou Tm3+- applications a l'amplification optique. Matériaux. Université Rennes 1, 2003. Français. ⟨tel-00006276⟩

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