Continuous Tunable Delays at 10-Gb/s Data Rates Using Self-Phase Modulation and Dispersion
Continuous Tunable Delays at 10-Gb/s Data Rates Using Self-Phase Modulation and Dispersion
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DOI：
10.1109/jlt.2007.908552
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发表时间：
2007-12
影响因子：
4.7
通讯作者：
Yoshitomo Okawachi;R. Salem;A. Gaeta
中科院分区：
文献类型：
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作者：
Yoshitomo Okawachi;R. Salem;A. Gaeta
我们演示了在通信数据速率下，通过色散和波长转换，使用非线性光谱展宽和滤波的光纤中的全光可调谐延迟。第二波长转换级被实现为使得延迟发生器的输出波长与输入波长相同。利用该方案，我们实现了在10 Gb/s的数据速率下，5.4 ps长脉冲的250 ps范围内的连续可调延迟。延迟发生器没有表现出任何可测量的脉冲失真，并提供高达60 Gb/s的数据速率的潜在可扩展性。延迟发生器的重构速率受到波长转换级中使用的带通滤波器的调谐速度的限制。
We demonstrate all-optical tunable delays in optical fiber at communication data rates via dispersion and wavelength conversion using nonlinear spectral broadening and filtering. A second wavelength-conversion stage is implemented such that the output wavelength of the delay generator is the same as the input wavelength. With this scheme, we achieve continuously tunable delays over a range of 250 ps for 5.4-ps-long pulses at a data rate of 10 Gb/s. The delay generator does not exhibit any measurable pulse distortion and offers potential scalability to data rates as high as 60 Gb/s. The reconfiguration rate of the delay generator is limited by the tuning speed of the bandpass filter used in the wavelength-conversion stage.