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An Overview and Feasibility Study of Fabrication Technology and Characterization Techniques of Erbium-Doped Fiber amplifiers in Iran

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Figure

Fig. 1 Preform fabrication by MCVD method and  Er incorporation by solution doping, (a) cleaning  and drying the tube, (b) cladding and core  depositions, (c)  partial collapse, (d) solution  doping, and (e) collapse process [1]
Fig. 2 Aerosol technique for incorporating rare- rare-earth ions into fiber preform. The solution  containing rare-earth compound is nebulised by a  piezoelectric crystal and the N 2  gas carries the  aerosol to the preform [1]
Fig. 3 Three different methods for Er incorporation  by vapor phase process. (a). Er compound is melted  onto chamber spliced to the preform, (b)
Fig. 4 VAD technique for fabrication of fiber  preform and Er incorporation, (a) vapor phase  deposition, (b) core, cladding or Er end-on  deposition, and (c) liquid phase deposition [1]
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