We evaluated S-band Er:Al/Ge/SiO{sub}2 fiber amplifiers with a ～1525-nm fundamental-mode cutoff to suppress C-band ASE. In all-EDFA transmission tests, they produced no penalties aside from expected OSNR impairment, demonstrating suitability of S-band EDFAs for WDM transmission.
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机译：我们评估了S-BAND ER：AL / GE / SIO {SUB} 2光纤放大器，具有〜1525-nm的基本模式截止，抑制C波段ASE。在All-EDFA传输测试中，除了预期的OSNR损伤外，它们不会产生惩罚，证明了S频段EDFA进行WDM传输的适用性。
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