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光时分复用

光时分复用的相关文献在1988年到2019年内共计120篇,主要集中在无线电电子学、电信技术、自动化技术、计算机技术、铁路运输 等领域,其中期刊论文89篇、会议论文8篇、专利文献302144篇;相关期刊44种,包括电子学报、电信科学、电子产品世界等; 相关会议7种,包括2011’光纤光缆及光器件产品技术研讨会、2010年中国通信国际会议、全国第十三次光纤通信暨第十四届集成光学学术会议等;光时分复用的相关文献由218位作者贡献,包括叶培大、李唐军、林金桐等。

光时分复用—发文量

期刊论文>

论文:89 占比:0.03%

会议论文>

论文:8 占比:0.00%

专利文献>

论文:302144 占比:99.97%

总计:302241篇

光时分复用—发文趋势图

光时分复用

-研究学者

  • 叶培大
  • 李唐军
  • 林金桐
  • 伍剑
  • 姚敏玉
  • 娄采云
  • 陈明
  • 高以智
  • 李利军
  • 简水生
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 殷松超; 何璐; 戴博; 张大伟
    • 摘要: Ultrafast imaging system based on optical time-division multiplexing is proposed.A femtosecond fiber laser with center wavelength 1557 nm and pulse width about 90 fs, is used in the line-scan imaging system at 38.88 MHz for observing the USAF-1951 standard resolution test target.Based on the serial time-encoded amplified microscopy (STEAM) technology with the optical time-division multiplexing to achieve high resolution of ultrafast imaging, the imaging system has two times the sampling rate and the pixel number of the image is doubled.The result of the experiment demonstrates that the imaging system has achieved 20 GHz sampling rate by employing a 10 GHz of digital sampling device and doubling the sampling points comparing with the conventional ultrafast imaging system.The problem of low pixel number is addressed and image quality is enhanced effectively.%提出了一种基于光时分复用技术的高速成像系统.飞秒激光器中心波长1557 nm,脉冲宽度90 fs,对USAF-1951分辨率板线性扫描成像,扫描频率为38.88 MHz.在连续时间序列编码放大显微成像技术的基础上,运用光时分复用技术,复制光脉冲信号并携带检测物体相同的空间信息.原光脉冲和复制光脉冲以相同的采样率分别采样,通过相应的数据处理将两次采样数据整合在一起还原图像.实验结果表明,与传统的超快成像方法相比,成像系统利用10 GHz的数字采样设备可以达到20 GHz的采样率,采样点数是传统超快成像方法的两倍.该方法有效克服了成像系统采样率不足的问题,提高了成像系统的空间分辨率.与此同时,该系统算法复杂程度不高,有利于进一步促进超高速成像技术的发展.
    • 钟东洲; 计永强
    • 摘要: 针对高速率 OTDM(光时分复用)系统中的一些关键技术问题,如时钟提取、时分解复用和色散补偿等,提出了8×40 Gbit/s的 OTDM 系统技术方案。结果表明,通过选择合适的时钟提取方式和基于对称性色散位移光纤的色散补偿技术,能够实现在一个时隙内对每个信道的40 Gbit/s 归零码信号的解复用,且解复用后的信号质量较好。该系统实现了320 Gbit/s OTDM 通信。%For some key technological issues in high-rate Optical Time Division Multiplexing (OTDM)systems,such as clock extraction,time division demultiplexing and dispersion compensation,we present an 8×40 Gbit/s OTDM system technological scheme.The results indicate that by choosing appropriate clock extraction and the symmetrical dispersion shifted fiber-based dispersion compensation technology,we can demultiplex the 40 Gbit/s RZ signals in every channel in one timeslot,and with good quality at that.This system realizes 320 Gbit/s OTDM communication.
    • 贾楠; 李唐军; 孙剑; 钟康平; 王目光
    • 摘要: 提出一种利用双向使用高非线性光纤(HNLF)实现同时解复用出两路信号的全光解复用方案.将复用信号和控制光的混合信号从 HNLF 的两端同时注入,复用信号中的某一路信号通过交叉相位调制使控制光产生蓝移或红移,在HNLF的输出端用窄带滤波器将控制光的蓝移或红移部分滤出从而同时实现两路信号解复用.理论分析了信号光和控制光在HNLF中的相互作用和解复用原理.搭建80 Gbit/s光时分复用系统,对双向使用HNLF的解复用结构进行了实验研究.在HNLF的两个输出端同时实现不同信道的无误码解复用,其中信道解复用的最大功率代价为2.6 dB.%A simultaneous two-channel optical time division multiplexing (OTDM) demultiplexing is proposed and experimen-tally demonstrated by using a bidirectionally operated highly nonlinear fiber followed by a narrow-band offset filter. The performance of the proposed demultiplexer is evaluated in an 80 Gbit/s OTDM transmission system. A maximum power penalty of 2.6 dB is obtained for the worst demultiplexed channel. The proposal might be interesting since it offers a powerful tool for developing ultrafast photonic networks.
    • 韩小龙
    • 摘要: 本文将就我国现代光纤通讯技术的特征及其优势和现代主流的光纤通信传输技术以及我国现代光纤通讯技术的发展前景做具体论述。
    • 张尚剑; 邹新海; 张雅丽; 刘永
    • 摘要: 基于带内时钟导引的置入与提取,提出一种在超高速时分复用系统中的自时钟恢复方案.通过在发送端插入带内时钟导引并在接收端提取出该时钟导引,实现系统时钟的瞬时同步恢复,无需传统时钟恢复中的超快相位比较器和锁相环.实验分别演示了由相位调制和强度调制构造的时钟导引,结果表明所提方法可实现160~40Gb/S的无误码解复用.该方法在光发射机之后和光接收机之前的光域内对数据信号进行预处理,简化了时钟恢复,同时并未改变光发射机和光接收机的原理、结构和设计,与现行的光纤通信系统兼容.
    • 胡祖翰; 罗斌; 潘炜; 黄池翔; 张志强; 唐金成
    • 摘要: In accordance with the needs of railway section communication,a new communication system was proposed in this paper,which was based on the optical time division multiplexing technology and passive optical network structure.The system prototype was designed and developed by solving three key problems:the clock synchronization among multiple passive optical interfaces,power equalization for optical fiber links and intersystem protocols.Field tests were made in the section between the Jinmacun Station and Yangtianchong Station on the Shanghai-Kunming Line.The text results show the system design scheme is feasible and it can satisfy the function requirements of the railway section communication specifictions and can realize enhanced data exchange,low costs and high efficiency.%按照铁路区间通信的需求,本文提出一种基于光时分复用技术,采用无源光网络结构的铁路区间光纤通信系统设计方案.通过解决多个无源光接口之间的光同步、链路光功率均衡与系统内部通信协议3个关键技术问题,完成原型设计开发.在沪昆线金马村与秧田冲两车站之间进行现场实验,结果表明设计方案具有可行性,除满足铁路区间通信规范所要求的功能外,还能够提供增强的数据通信功能,成本低,通信质量较高.
    • 曾德兵; 闫连山; 陈娟子; 吴宗玲; 王波
    • 摘要: 复用能力与解调速率是光纤光栅传感系统实用性的关键技术.采用在时分复用中引入了波分复用的方法,实现分布式测量,引入匹配光栅进一步降低了纯光时分复用系统中信道串扰的问题;系统中无传统扫描滤波或信道选择器件,大幅提升了解调速率.原型系统在一个风机叶片模型上进行测量与验证,实现了10 kHz速率下10个信道的应变实时监控.%Multiplexing and demodulation are key techniques for practical applications of fiber Bragg grating sensor system. A distributed stress monitor was achieved by simultaneously using wavelength division multiplexing(WDM)and time division multi-plexing(TDM) technology. Channel crosstalk was further reduced by using matched gratings. The demodulation speed was greatly improved without scanning filters. The prototype is verified using a wind blade model and successfully ten channels stress monitoring with a speed of 10 kHz is achieved.
    • 贾锡学; 李岩; 孔德明; 伍剑
    • 摘要: 为了从高速OTDM(光时分复用)信号中提取出支路时钟并实现解复用,实现高速光信号与相对低速电信号之间的接口,首次展示了一种基于商用的MZM(马赫—曾德调制器)和PolM(偏振调制器)级联的OEO(光电振荡器)实现从2×40 GBaud/s OTDM信号中提取支路时钟并同时解复用的实验方案.利用这种改进的OEO,成功地从2×40 GBaud/s的OTDM DQPSK(差分四相相移键控)调制格式的高速光信号中提取出了40 GHz电时钟,该时钟的相位噪声在10 kHz频偏处达到-98.62 dBc/Hz,与微波源(Agilent Technologies,E8267D)的相位噪声质量几乎相同.这种OEO还同时实现了从OTDM信号中解复用出两个支路信号的功能,即将160 Gbit/s的PRBS(伪随机二进制序列)OTDM信号成功解复用为两路高质量的80 Gbit/s支路信号.
    • 陈娟子; 闫连山; 曾德兵; 吴宗玲
    • 摘要: Based on the principle of fiber Bragg grating( FBG)and optical time-division multiplexing( OTDM) ,a high-speed demodulation scheme for the matched-grating strain sensor network is proposed. Ultra-high speed demodulation system for multiple FBG senor channels is achieved using FPGA +ARM circuit design. Especially, the noise effect brought by either light path or circuit is significantly suppressed using a composite filtering algorithm,and the variation range of the peak power is reduced from ?.03dB to ?.31 dB. The designed system can be used in various environments and has important reference value.%基于光纤Bragg光栅(FBG)和光时分复用(OTDM)的基本原理研究匹配光栅应变传感器网络的高速解调问题.给出了运用FPGA+ARM的匹配光栅应变解调系统设计,实现了多个FBG信道的同时监测.重点在通过寻峰算法寻到峰值的情况下,结合一种复合滤波算法(限幅法+滑动滤波法),极大地抑制了光路和电路中产生的噪声,将峰值功率变化范围由-1.03 dB压缩到-0.31 dB,使得所设计的系统能够在多种环境中应用,具有重要的参考价值.
    • 胡祖翰; 罗斌; 黄池翔; 张志强; 唐金成; 潘炜
    • 摘要: In accordance with the demand of the railway section communication, the paper proposed a new data multiplexing/demultiplexing circuit design based on OTDM. The design solved the clock synchronization between multi passive optical interfaces via checking the synchronous code from the station, implemented the data multiplexing/demultiplexing and the conversion between different code rates. The results showed that the design was feasible, could provide both data interfaces 2 M and 64 k.%根据铁路区间通信的需求,本文提出一种基于OTDM(光时分复用)技术的铁路区间光纤通信系统的复用与解复用电路设计方案.对车站发送的同步码进行检测,根据检测结果实现各个无源光接口之间的时钟同步,实现了数据的复用与解复用,不同码率间的转换.试验结果表明设计具有可行性,可提供2M和64 k两种数据接口.
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