排序方式: 共有38条查询结果,搜索用时 15 毫秒
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40 Gb/s信号的全光3R再生 总被引:4,自引:2,他引:2
研制出以注入锁模光纤激光器进行时钟恢复、电吸收调制器(EAM)作光判决门进行信号再整形的新型全光3R再生器,成功地运行于40Gb/s。理论和实验证明锁模环形激光器腔内放置的可调谐光滤波器的透射谱形状对时钟的脉宽有显著影响,超高斯透射谱的光滤波器利于获得窄时钟光脉冲,腔内放置这样的滤波器使恢复的时钟光脉冲谱宽达0.44nm、脉宽6ps、时间抖动小于1ps。最佳选择用作光判决的开关门的参量,改善了开关门的传输函数,使其接近阶跃函数,并使得开关窗宽度达到最佳。对于被剩余色散恶化的40Gb/s归零码信号进行了3R再牛,再生后达到了无误码。 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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The comb-like filter characteristic of a Fabry-Perot etalon in frequency domain was deployed to filter out the discrete spectral lines of injected 10GHz optical pulse train. By changing the free spectral range and obtaining the spectral components spaced to 4 and 6 times of the repetition rate, the pulse trains with 40 GHz and 60 GHz were successfully obtained. 相似文献
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