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本文对基于光注入半导体激光器的单周期动力学态产生光子微波并利用光反馈压缩其线宽进行了实验研究. 研究结果表明: 通过适当调节注入参数, 能对该方法产生的光子微波频率在数十GHz范围内进行连续、大范围地调节; 通过引入光反馈并精细调节反馈强度, 光子微波的线宽能够从40—100 MHz的范围被压缩约两个数量级至300—900 kHz范围;反馈长度对光子微波的线宽几乎没有影响, 但当反馈长度精细变化时, 光子微波频率会出现一定范围内的周期性漂移. 相似文献
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We report on the experimental and numerical investigations of an all-optical network interface from back- bone networks to local area networks based on semiconductor optical amplifiers (SOAs). All-optical signals at 40 Gbps with return-to-zero (RZ) format in backbone networks are demultiplexed to signals at 10 Gbps with nonreturn-to-zero (NRZ) format in local area networks. SOAs and optical band-pass filters are used in the optical interface. We study the waveform, optical spectrum, and bit error rate (BER) of the interface scheme based on the experimental and numerical simulation results. The interface technique can be used in variable length and bit-rate variable optical networks. 相似文献
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We focus on the burst assembly mechanism and propose a new intelligent method in which the burst is assembled from several internet protocol (IP) packets in which the number of IP packets is changed according to the traffic load and the burst is segmented into several parts, called the ISOBS mechanism. The average burst assembly time of the ISOBS mechanism decreases as compared with the fixed-assembly-time and fixed-assembly-time-and- length mechanisms. The loss ratio decreases 50% as compared with the general optical burst switching (OBS) mechanism. The last segment can carry high quality of service (QOS) information. We can achieve that the loss ratio of the last segment is almost zero when the traffic load is less than 0.05. When the traffic load is 0.9, the loss ratio of the last segment is 0.0041. The ISOBS can support to transmit different QOS data. 相似文献
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All-Optical RZ to NRZ Format Conversion Using Single SOA Assisted by Optical Band-Pass Filter 总被引:1,自引:0,他引:1 下载免费PDF全文
We propose a novel all-optical format conversion from the return-to-zero (RZ) to the non-return-to-zero (NRZ) based on single semiconductor optical amplifier (SOA) and optical band-pass filter (OBE). We demonstrate the proof of the principle experiment at 10 Gbps by using the test SOA and OBF converter. The format conversion can be achieved with output extinction ratio of 11.51 dB. The BER is 5.5×10^-9 when the power of NRZ is - 10 dBm. The proposed scheme is robust and potential for applications in optical networks. 相似文献
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