【摘要】 本文利用 lum p模型对单段 SOA(半导体光放大器 )和 SOA环形激光器四波混频的变换效率和噪声指数作了理论分析 ,推导出外加增益减小噪声指数的限制条件 ,表明在一定的限制条件下 ,SOA光纤环中引入外加增益可以提高变换性能。理论分析与实验结果一致。经过优化后的自泵浦波长变换器变换距离增加了 7nm。更多还原

【Abstract】 A fully transparent wavelength converter based on four wave mixing in a semiconductor optical amplifier (SOA) fiber ring laser is theoretically analyzed by using a lumped model.We find that an optimal noise figure could be achieved by adding an external gain in the ring cavity under certain limitation limitation conditions.Such a wavelengthconverter has a wavelength shiftof 13.8 nm rather than 6.9 nm with a BER below 10 -9 .更多还原