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A model of an Erbium Doped Fiber Amplifier (EDFA) configured in Dual Stages (DS) scheme with Tunable Band Pass (TBF) is presented. A circulator is used to reflect the amplified signal back to the Erbium-doped fiber and which is incorporated with Tunable band pass filter (TBF) which filter-out Amplified Spontaneous emission in order to ensure efficient amplification of the signal as it propagates along...
In this paper, a novel theoretical model of an Erbium Doped Fiber Amplifier (EDFA) configured in Quadruple Pass Dual Stage (QPDS) amplification which is incorporated with Tunable band pass filters (TBFs) is proposed. Amplified Spontaneous Emission (ASE) is filtered-out in mid-section to ensure efficient amplification of the signal as it propagates along the fiber. The two stages were pumped by laser...
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