共查询到18条相似文献,搜索用时 62 毫秒
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从光电集成电路的角度出发,根据量子点半导体光放大器(QD-SOA)中载流子跃迁速率方程和光场传输方程,建立了QD-SOA等效电路模型,并通过电路仿真的方法对QD-SOA的增益谱、饱和增益特性等进行了仿真和分析;利用QD-SOA的交叉增益调制研究了速率分别为40Gbps、100Gbps和160Gbps时的波长转换特性,并分析了不同的偏置电流、功率的信号光和探测光对输出信号消光比和Q值的影响,其转换速率可达到100Gbps,消光比ER约为10dB,Q值约为2.2.该研究对提高基于QD-SOA的交叉增益调制波长转换的性能具有指导意义. 相似文献
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从理论和实验上研究了基于半导体光放大器的交叉增益型波长转换器的转换特性.实验研究了转换特性与信号调制格式、放大器增益的关系.利用大信号分析模型讨论了消光比、平均功率转换效率和交流转换效率等性能与平均抽运功率、探测功率及放大器增益特性之间的关系.结果表明,交流转换效率能综合消光比和平均功率转换效率两种指标,在转换器性能优化中有重要的作用 交叉增益型波长转换器输入动态范围较小,很难实现对信号调制格式透明 放大器的增益是取得最佳转换性能的关键
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A NOVEL SCHEME FOR XGM WAVELENGTH CONVERSION BASED ON SINGLE-PORT-COUPLED SOA 总被引:4,自引:0,他引:4 下载免费PDF全文
A novel scheme for wavelength conversion based on cross-gain modulation (XGM) in single-port-coupled semiconductor optical amplifier (SOA), in which the input and output share one port, is brought forward. Experimental results and theoretical analysis show that this scheme can be achieved with simple implementation, high output extinction ratio and large input dynamic range. Based on this novel scheme, 2.5 Gbit/s wavelength up conversion with 12.8 nm span has been demonstrated with the output extinction ratio as high as 15 dB. 相似文献
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根据半导体光放大器的高频滤波效应,利用动态载流子恢复时间的概念,分析了基于半导体光放大器交叉增益调制的全光波长变换器中变换信号的波形、啁啾与探测光功率的关系。理论计算表明,在保持变换信号消光比相同的情况下,在大的探测光功率下,变换信号的波形将变好,并且啁啾对变换信号码间干扰的影响会减小,理论很好地解释了文献中的实验结果。 相似文献
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We evaluate the inter-channel crosstalk in a semiconductor optical amplifier when injecting a high optical power continuous wave, as assist light, inside its active region around the gain transparency wavelength. In this work, the crosstalk of signal1 (1535 nm) modulated at 2.5 Gb/s, has been induced by signal2 (1560 nm) modulated at 2.5 Gb/s as well and having an optical input power of −7.5 dBm to simulate a multi-channel transmission. By measuring the bit error rate of signal1, we show that the pattern penalty induced by the cross-gain modulation can be significantly reduced or even in certain conditions suppressed by the assist light. 相似文献