共查询到17条相似文献,搜索用时 156 毫秒
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《中国光学与应用光学文摘》2006,(1)
TN248.352006010120基于注入锁模激光器的40Gb/s全光时钟提取=40Gb/sall-optical clock extraction based on the injection mode-locked laser[刊,中]/吕捷(天津大学电子信息学院光纤通信实验室.天津(300072)),于晋龙…∥光学学报.—2005,25(10).—1307-1312利用注入锁模光纤激光器进行时钟提取实验,成功地从40Gb/s伪随机码信号中提取出了40GHz时钟信号。实验中,在注入信号进入环形腔之前先通过一个马赫-曾德尔(M-Z)干涉仪,提高了注入信号中时钟频谱分量的相对大小,从而有利于时钟信号的提取。首先从10Gb/s伪随机码信号中提取出波形很… 相似文献
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提出了一种利用Fabry-Perot(FP)半导体激光器同步提取波长转换的分路光时钟的新方法,并对该方法进行了数值模拟和实验验证.光注入半导体激光器会产生非线性单周期振荡特性,利用交叉增益调制效应及对单周期振荡的微波锁频效应,可从光时分复用信号中提取出波长转换的分路光时钟.采用一个FP半导体激光器作为全光分路时钟提取及波长转换器,数值模拟实现了从波长为1555 nm、速率为2×20 Gb/s的光时分复用信号中提取出波长转换为1550 nm、重复频率为20 GHz的分路光时钟,实验完成了从波长为155024 nm、重复频率为1236 GHz光脉冲信号中提取出相位噪声为-105 dBc/Hz的波长为154591 nm、重复频率618 GHz的分频光时钟.此外还详细研究了注入光功率、波长失谐、FP激光器偏置电流及纵模选择对光时钟提取的影响,实验结果和数值模拟结果符合.该方法在光时分复用混合波分复用通信系统中实现全光解复用及波长路由有着重要的应用价值.
关键词:
波长转换
时钟提取
光注入
非线性动力学 相似文献
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A new but simply implemented optical clock recovery scheme for optical time-division multiplexing (OTDM) systems based on stimulated BriUouin scattering (SBS) effect is presented and demonstrated experimentally. According to the unequal-amplitude even-multiplexed OTDM signals, the frame clock is extracted. In addition, the clock with multiple tributary rates is recovered from 160-Gb/s OTDM signal in simulation by utilizing the clock recovery module. 相似文献
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Optical clock division and multiplication were realized with an injection mode-locked fiber ring laser based on semiconductor optical amplifier SOA owing to the relatively long recovery time of carriers in SOA and the rational harmonic mode-locking. Second frequency division and 1.5th frequency multiplication of 10 GHz, second and
th frequency division of 20 GHz optical pulse trains were realized, respectively, in the experiment. 相似文献
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A non-return-to-zero (NRZ) to pseudo-return-to-zero (PRZ) converter consisting of a semiconductor optical amplifier (SOA) and an arrayed waveguide grating (AWG) is proposed, by which the enhancement of clock frequency component and clock-to-data suppression ratio of the NRZ data are evidently achieved. Alloptical clock recovery from NRZ data at 10 Gb/s is successfully demonstrated with the proposed NRZ-to-PRZ converter and a mode-locked SOA fiber laser. Furthermore, NRZ-to-RZ format conversion of 10 Gb/s is realized by using the recovered clock as the control light of terahertz optical asymmetric demultiplexer(TOAD), which further proves that the proposed clock recovery scheme is applicable. 相似文献
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Lv Jie Yu Jin-Long Wang Hong-Li Li Ya-Nan Yang En-Ze 《Optical and Quantum Electronics》2007,39(14):1145-1152
All-optical clock recovery is a key technology in all-optical 3R (Re-timing, Re-shaping, Re-amplifying) regeneration. In this
paper, we demonstrate an all-optical clock recovery circuit based on injection mode-locked fiber laser. We have successfully
extracted 40 GHz optical clock pulse from 40 Gb/s pseudorandom signal. Before the injected signal goes into the ring cavity,
we make it pass a Mach–Zender interferometer (MZI) firstly. And thereby the clock component in the injected signal has been
increased relatively, which is benefit to the clock recovery. We obtain firstly 10 GHz clock signal with perfect waveform
from 10 Gb/s pseudorandom data stream, and then we extract 40 GHz clock signal from 40 Gb/s pseudorandom signal. 相似文献