Design of high gain Er3+-Yb3+-Ce3+ co-doped ZELA fluoride glass waveguide amplifier

F. Prudenzano; L. Allegretti; M. De Sario; L. Mescia; T. Palmisano; M. Ferrari; A. Chiasera; Y. Jestin; B. Boulard; O. Péron

doi:10.1117/12.782085

5 May 2008 Design of high gain Er³⁺-Yb³⁺-Ce³⁺ co-doped ZELA fluoride glass waveguide amplifier

F. Prudenzano, L. Allegretti, M. De Sario, L. Mescia, T. Palmisano, M. Ferrari, A. Chiasera, Y. Jestin, B. Boulard, O. Péron

Author Affiliations +

Proceedings Volume 6996, Silicon Photonics and Photonic Integrated Circuits; 69960U (2008) https://doi.org/10.1117/12.782085
Event: SPIE Photonics Europe, 2008, Strasbourg, France

Abstract

This paper reports an accurate design of Er³⁺-Yb³⁺-Ce³⁺ doped ZrF₄-ErF₃-LaF₃-AlF₃ (ZELA) fluoride glass channel amplifier operating in the third window of the telecommunication systems. By considering measured spectroscopic and optical parameters, we demonstrate the feasibility of a novel optical waveguide amplifier exhibiting high gain and low noise figure. The electromagnetic investigation has been carried-out by employing a full-vector Finite Element Method (FEM) solver. The mode electromagnetic field, calculated at different wavelengths, constitutes the input data for the home-made numerical code which solves both the power propagation and population rate equations via a Runge-Kutta based iterative algorithm. The dependence of the up-conversion coefficients on erbium concentration are taken into account. In the simulations, the core shape, the waveguide length, the input pump and signal powers, the erbium and the ytterbium concentration are varied with the aim to optimize the amplifier performance. The goal of achieving high gain with a short device length is demonstrated. In particular, the simulation results show that the waveguide amplifier exhibits an optimal internal gain value close to 22.5 dB and a noise figure of 4.1 dB for a waveguide amplifier 5.5 cm long, an erbium concentration of N_Er=2.5×10²⁶ ions/m³, ytterbium concentration N_Yb=2.4×10²⁶ ions/m³, N_Ce=6×10²⁶ ions/m³, an input pump power P_p=100 mW and an input signal power P_s=1 μW.

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F. Prudenzano, L. Allegretti, M. De Sario, L. Mescia, T. Palmisano, M. Ferrari, A. Chiasera, Y. Jestin, B. Boulard, and O. Péron "Design of high gain Er³⁺-Yb³⁺-Ce³⁺ co-doped ZELA fluoride glass waveguide amplifier", Proc. SPIE 6996, Silicon Photonics and Photonic Integrated Circuits, 69960U (5 May 2008); https://doi.org/10.1117/12.782085

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