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利用简单的实验系统对１４８０ｎｍ泵浦下掺铒光纤中正、反向放大的自发辐射（ＡＳＥ）谱进行了研究，观察到其差别，认为此差别是由于１４８０ｎｍ泵浦源的边带功率引起的
A simple experimental system was used to study the positive and negative amplified spontaneous emission (ASE) spectra of erbium-doped fibers under 1480 nm pumping. The difference was observed because of the sideband power of the 1480 nm pump source