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国家重点基础研究发展计划(2010CB328201)

作品数:15 被引量:25H指数:3
相关作者:赵文玉汤瑞吴庆伟徐云斌张国颖更多>>
相关机构:工业和信息化部中讯邮电咨询设计院有限公司北京大学更多>>
发文基金:国家重点基础研究发展计划国家自然科学基金国家高技术研究发展计划更多>>
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15 条 记 录,以下是 1-10
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Considerations on Transport Networks Technologies Evolution
2013年
Driven by an ever-increasing num- ber of new services and applications, transport networks have been undergoing significant changes. In this paper, we describe several ex- citing technology directions associated with future optical transport networks. We review the status of 100G, which is now commercially available and entering volume deployments, and its applications in China. Beyond 100G is considered as the primary technology for the expansion of both channel and fiber capacity in tile near term, and several enabling techniques are introduced. Then, key technologies, prod- ucts, and future evolutionary options of Optical Transport Networks (OTNs) are extensively discussed. Compared to fixed bandwidth and coarse granularity of current WDM network, a flexible grid architecture is a desirable evolu- tion trend, and key technologies and challenges are described. Finally, we illustrate the multi-dimension convergences in terms of IP and optical, Packet OTN (P-OTN), as well as Electronic Integrated Circuits (EICs) and Photonic Integrated Cimuits (PICs). Transport networks are therefore in the process of be- coming more broadband, robust, flexible, cost-effective and lower-power-consumptive.
张海懿赵文玉吴冰冰
关键词:OTN
基于高非线性光纤中四波混频饱和效应的NRZ-DPSK和RZ-DPSK信号幅度再生实验(英文)
2010年
利用高非线性光纤中的四波混频饱和效应,实验展示了42.8Gbit/s非归零差分相移键控(NRZ-DPSK)信号和归零差分相移键控(RZ-DPSK)信号的全光幅度再生.测量了NRZ-DPSK信号和RZ-DPSK信号经过高非线性光纤的功率传递曲线.在平均输入功率均为16dBm的条件下,对两种调制格式的再生性能进行了比较.实验结果显示RZ-DPSK信号具有更好的幅度再生性能.
吴琳张帆李力陈章渊徐安士
关键词:差分相移键控四波混频
Joint nonlinear electrical equalization in coherent optical PDM DFT-spread-OFDM systems被引量:1
2013年
We propose a joint nonlinear electrical equalization approach in coherent optical discrete-Fourier-transform spread orthogonal-frequency-division-multiplexing (DFT-sprea^-OFDM) systems with polarization divi- sion multiplexing (PDM). This method is based on an adaptive Volterra series expansion for nonlinear distortions of two orthogonal polarizations. The nonlinear electrical equalization is validated through numerical simulation of 100-Gb/s quadrature phase shift keying and 200-Gb/s 16 quadrature amplitude modulation PDM DFT-spread-OFDM systems.
黄志远张帆陈章渊
关键词:MULTIPLEXING
Compensating for Nonlinear Effects in Coherent-Detection Optical Transmission Systems
2012年
Fiber nonlinearity is one of the most important limiters of capacity in coherent optical communications. In this paper, we review two nonlinear compensation methods: digital backward propagation (BP) and nonlinear electrical equalizer (NLEE) based on the timedomain Volterra series. These compensation algorithms are implemented in a singlechannel 50 Gb/s coherent optical singlecarrier frequency division multiplexed (CO-SCFDM) system transmitting over 10 × 80 km of standard singlemode fiber (SSMF).
Fan Zhang (State Key Laboratory of Advanced Optical Communication Systems & Networks, Peking University, Beijing 100871, P.R.China)
Experimental measurement of growth patterns on fossil corals:Secular variation in ancient Earth-Sun distances被引量:3
2010年
In recent years,much attention has been given to the increase in the Earth-Sun distance,with the modern rate reported as 5-15 m/cy on the basis of astronomical measurements.However,traditional methods cannot measure the ancient leaving rates,so a myriad of research attempting to provide explanations were met with unmatched magnitudes.In this paper we consider that the growth patterns on fossils could reflect the ancient Earth-Sun relationships.Through mechanical analysis of both the Earth-Sun and Earth-Moon systems,these patterns confirmed an increase in the Earth-Sun distance.With a large number of well-preserved specimens and new technology available,both the modern and ancient leaving rates could be measured with high precision,and it was found that the Earth has been leaving the Sun over the past 0.53 billion years.The Earth's semi-major axis was 146 million kilometers at the beginning of the Phanerozoic Eon,equating to 97.6% of its current value.Measured modern leaving rates are 5-14 m/cy,whereas the ancient rates were much higher.Experimental results indicate a special expansion with an average expansion coefficient of 0.57H0 and deceleration in the form of Hubble drag.On the basis of experimental results,the Earth's semi-major axis could be represented by a simple formula that matches fossil measurements.
ZHANG WeiJia1,3,4,LI ZhengBin2,3 & LEI Yang1 1 Department of Physics,Peking University,Beijing 100871,China
关键词:石珊瑚
100G技术、标准及应用策略被引量:4
2012年
2012年100G在技术、测试验证和标准化等方面取得重要进展,而100Gbit/s如何引入和应用已成为业界关注的焦点。本文介绍了100G技术和标准最新进展,同时对未来100G应用策略提出了相应建议。
赵文玉
Experimental demonstration of multigranularity switching between optical DFT-spread-OFDM and Nyquist superchannel被引量:1
2014年
We experimentally investigate multigranularity optical subband switching functionality between two superchannels with slight error vector magnitude penalty. One is 4×39 Gb/s polarization-division-multiplexed(PDM) quadrature phase shift keying discrete Fourier transform spread orthogonal frequency division multiplexing(DFT-spread-OFDM) superchannel with 12.5 GHz band spacing. The other is 8×29 Gb/s PDM-16-quadrature amplitude modulation Nyquist pulse shaping superchannel with 6.25 GHz band spacing. To the best of our knowledge, this is the first time that optical switching functionality for individual band between different superchannels with multigranularity is realized.
丁瑞张婷婷张帆
Experimental study on resonance frequency enhancement of strong optical injection-locked semiconductor lasers
2013年
Enhancing resonance frequency of strong optical studied. Resonance frequency is increased from technique. We experimentally demonstrate that injection-locked semiconductor lasers is experimentally 4.1 to 53.9 GHz by the optical injection locking (OIL) resonance frequency is strictly equal to the frequency spacing between the cavity modes of the master and slave lasers under strong OIL condition. This result provides valuable information to improve OIL theory.
郭芃陈章渊
100Gb/s光传输设备及测试被引量:4
2012年
随着偏振复用正交相移键控(PM-QPSK)编码、基于数字信号处理(DSP)的相干接收、前向纠错(FEC)等关键技术的突破,目前100Gb/s光传输设备已发展成熟,相应测试仪表也有多个厂家推出,国内外针对100 Gb/s光传输设备的实验室和现网测试也已规模开展,虽然在性能测试方面存在部分尚未解决的难题,但整体上已为100 Gb/s光传输设备规模商用奠定基础。
吴庆伟汤瑞汤晓华赵文玉
关键词:光传输设备
光传送网基于SDN的控制技术探讨被引量:6
2013年
网络控制技术SDN正在进一步推动网络的可编程能力和开放性。SDN面向分组网络提出了控制架构和OpenFlow协议,但是并没有针对光交换提出成熟的控制方法。本文对比分析了潜在的传送网控制协议的优缺点,包括PCEP和OpenFlow,然后针对电路交换提出了针对OpenFlow的协议扩展方案,并探讨了光传送网络中基于控制器的潜在应用。
陈秀忠赵俊峰张国颖徐云斌王郁
关键词:光传送网络
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