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The gain characteristics of Er x Y 2−x SiO 5 waveguide amplifiers have been investigated by solving rate equations and propagation equations. The gain at 1.53μm as a function of waveguide length, Er 3+ concentration and pump power is studied pumping at three different wavelengths of 654nm, 980nm and 1480nm, respectively. The optimum Er 3+ concentrations of 1×10...
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