Widely tunable optical delay generator.
Widely tunable optical delay generator.
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DOI：
10.1364/ol.35.003592
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发表时间：
2010-11
期刊：
影响因子：
3.6
通讯作者：
K. Jamshidi;A. Wiatrek;C. Bersch;G. Onishchukov;G. Leuchs;T. Schneider
中科院分区：
文献类型：
--
作者：
K. Jamshidi;A. Wiatrek;C. Bersch;G. Onishchukov;G. Leuchs;T. Schneider
我们提出并论证了一种基于周期谱滤波的准存储光方法，该方法通过频率-时间转换的幅度调制在时间域中实现。通过改变电调制信号的频率，可以在很大范围内调谐延迟。在我们的实验中，单个2.5ps脉冲的延迟变化了66个脉冲宽度。该技术同样适用于更复杂的光数据分组。与已知的方法相反，该方法具有非常大的频谱带宽，并且可以通过光纤或使用现有技术的集成解决方案来实现。由于带宽大，对于亚皮秒脉冲，可以潜在地实现高达数万个脉冲宽度的分数延迟，这是关于实现简单性的巨大价值。
We propose and demonstrate a method for quasi storage of light based on periodic spectral filtering realized in the time domain by amplitude modulation using frequency-to-time conversion. The delay can be tuned in a wide range by changing the frequency of an electrical modulation signal. In our experiments, the delay of single 2.5 ps pulses varied by 66 pulse widths. The technique works equally well for more complex optical data packets. Contrary to known approaches, the method has a very large spectral bandwidth and can be implemented by either fiber or integrated solutions using existing technologies. Because of the large bandwidth, fractional delays up to several tens of thousands of pulse widths can be achieved potentially for subpicosecond pulses, which is a tremendous value regarding the implementation simplicity.