排序方式: 共有6条查询结果,搜索用时 31 毫秒
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研究了基于半导体光放大器(SOA)结合延迟干涉仪(DI)结构的伞光波长转换.分析了SOA-DI结构的工作原理和DI参数的作用,进行了10 Gb/s和40 Gb/s归零码全光波长转换实验研究.实验结果表明,基于SOA中交叉增益调制(XGM)效应实现的波长转换为反相转换,输出信号消光比较低.当工作速率较高时波长转换信号质量明显恶化.而SOA-DI结构可实现同相波长转换并可改善波长转换信号的消光比,从而改善单个SOA实现波长转换的性能并提高系统的工作速率,该结构还具有结构简单、可光子集成等优点. 相似文献
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Influence of degenerate four-wave mixing on the performance of supercontinuum-based multiwavelength optical source 下载免费PDF全文
The influence of degenerate four-wave mixing (FWM) on the performance of
supercontinuum-based multiwavelength optical source has been investigated in
detail experimentally and theoretically. Numerical simulation results show
that the degenerate FWM effect has a deteriorative influence on the spectral
uniformity and the optical signal-to-noise ratio (OSNR) of
supercontinuum-based optical source, and by suppressing degenerate FWM
effect the performance enhancement of the supercontinuum can be achieved
successfully. These results are also confirmed by our experiments.
Experimentally, by suppressing degenerate FWM the crosstalk of adjacent
channels to the filtered channel can be reduced by as much as 15 dB, and
consequently the measured receiver sensitivity at 10 Gbit/s for the filtered
optical source is improved from $-1.7$ to $-17.8$~dBm. 相似文献
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利用非线性光纤环镜160Gb/s到10Gb/s解时分复用 总被引:1,自引:0,他引:1
研究了160 Gb/s光时分复用(OTDM)系统的解复用技术.针对160 Gb/s速率的特点,对高非线性光纤(HNLF)的光纤环镜(NOLM)特性及解复用进行了数值仿真.计算了低信号光时间抖动下解复用误码特性对时钟与信号的走离及时钟功率的依赖关系.计算了三种走离值消光比随时钟功率增加的变化趋势并给出:存在一个能获得最大的解复用窗口消光比、并能降低相邻信道串扰的合适的时钟功率范围.利用自制的基于电吸收调制器和压缩技术的超短光脉冲源建立了160 Gb/s OTDM实验系统,测量了不同信号光功率下NOLM的消光比,它基本不随信号增大而变化,在信号功率为7.3 dBm时仍大于23 dB.利用上述装置实现了无误码的160 Gb/s到10 Gb/s全光解复用. 相似文献
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