Bit rate and wavelength transparent all-optical clock recovery scheme for NRZ-coded PRBS signals
Bit rate and wavelength transparent all-optical clock recovery scheme for NRZ-coded PRBS signals
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DOI：
10.1109/lpt.2006.871834
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发表时间：
2006-04
影响因子：
2.6
通讯作者：
J. Slovak;C. Bornholdt;J. Kreissl;S. Bauer;M. Biletzke;M. Schlak;B. Sartorius
中科院分区：
文献类型：
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作者：
J. Slovak;C. Bornholdt;J. Kreissl;S. Bauer;M. Biletzke;M. Schlak;B. Sartorius
提出了一种基于自脉动激光器的40 Gb/S非归零伪随机二进制序列数据流的全光时钟恢复方法。在注入光时钟之前，利用紧凑的预处理电路将NRZ信号转换为伪归零序列。它包括一个半导体光放大和一个周期性的波分复用解复用器滤波器。在8分贝以上的数据动态范围内，在自脉动激光器的输出端检测到了稳定的正弦时钟信号，其均方根抖动小于700ps。通过在39.81~43.02 Gb/S之间改变比特率以及C波段的不同波长，研究了全光时钟恢复方案的性能。
All-optical clock recovery from 40-Gb/s nonreturn-to-zero (NRZ) pseudorandom binary sequence data streams based on self-pulsating lasers is presented. A compact preprocessing circuit is utilized to convert an NRZ signal to a pseudoreturn-to-zero sequence before injecting into the optical clock. It comprises a semiconductor optical amplifier followed by a periodical wavelength-division-multiplexing demultiplexer filter. A stable sinusoidal clock signal with a root-mean-square jitter below 700 fs is detected at the output of the self-pulsating laser within data dynamic range of more than 8 dB. The performance of the all-optical clock recovery scheme is investigated by varying the bit rates between 39.81 and 43.02 Gb/s as well as for various wavelengths in the C-band.