Experimental studies of optical cross-connect nodes with the centralized management of wavelength and timing clock

波长和时钟集中管理的光交叉节点实验研究

• 批准号: 12555106
• 负责人: TAKUSHIMA Yuichi
• 金额: $ 3.71万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12555106/
• 关键词: optical network; optical switch; nonlinear optics; optical soliton; dispersion monitor; super-continuum generation; multi-wavelength source; optical cross-connect

Enabling technologies for ultra-high capacity backbone networks are divided into two categories ; high-capacity transmission technology and optical switching technology at network nodes. Among them, the recent progress in the wavelength-division multiplexing (WDM) technique have achieved the tremendous growth of the transmission capacity up to tera-bit/sec. On the other hand, in order to realize the ultra-high capacity network nodes various architectures of all-optical cross-connect (OXC) switches have been proposed, but they have crucial issues for practical use ; for example, the required optical hardware increases drastically with the size of the OXC node, the quality of the transmission signal can easily impaired in the OXC, and so on.The aim of this study is to develop the technology platform of optical network nodes which can cope with the aforementioned difficulties and to demonstrate it experimentally. In the proposed architecture, only a multi-wavelength pulse source is used i … More n the network node and shared with all optical channels. In this configuration, we can reduce the optical hardware by managing the signal wavelength and the timing clock by one light source. This also leads to the scalability for the number of wavelengths.The results of this studies are summarized as follows ; (1) we developed the multi-wavelength pulse source with the extremely low timing jitter by using the super-continuum generation technique in optical fibers. (2) we investigated the timing extraction of optical pulses by the opto-electric oscillators (OEO), and realized the synchronization of optical clock sources with low timing jitter lower than 100-fs. (3) we developed the in-service monitoring technique for the reconfigurable optical network, and demonstrate the in-service dispersion monitor in actual WDM transmission systems. (4) we developed an wavelength-selective OXC switch based on the proposed architecture and realized the OXC operation which can realize the scalability for the number of wavelength. Less

超高容量骨干网的使能技术分为两类：大容量传输技术和网络节点的光交换技术。其中，波分复用（WDM）技术的最新进展已经实现了传输容量的巨大增长，高达太比特/秒。另一方面，为了实现超高容量的网络节点，人们提出了各种各样的全光交叉连接（OXC）交换结构，但它们在实际应用中存在着关键问题;例如，所需的光硬件随着OXC节点的大小而急剧增加，在OXC中传输信号的质量容易受损，本研究的目的是开发能够科普上述困难的光网络节点技术平台，并进行实验验证。在该结构中，只使用了一个多波长脉冲源， ...更多信息 在网络节点中，并且与所有光信道共享。在该配置中，我们可以通过由一个光源管理信号波长和定时时钟来减少光学硬件。本文的主要研究成果如下：（1）利用光纤中的超连续谱产生技术，研制了具有极低定时抖动的多波长脉冲源。(2)研究了利用光电振荡器（OEO）对光脉冲的定时提取，实现了100 fs以下的低定时抖动光时钟源的同步。(3)提出了可重构光网络的在线色散监测技术，并在实际的WDM传输系统中进行了在线色散监测实验。(4)基于该结构设计了一种波长选择OXC交换机，实现了波长选择OXC操作，实现了波长数的可扩展性。少

项目成果

Y.Takushima, K.Kikuchi: "In-service monitor for group-velocity dispersion of optical fiber transmission systems"IEE Electron. Lett.. 37,12. 734-735 (2001)

Y.Takushima、K.Kikuchi：“光纤传输系统群速度色散的在线监测”IEE Electron。

M.Jablonski, Y.Takushima.K.Kikuchi: "The realization of all-pass filters for third-order dispersion compensation in ultra-fast optical fiber transmission systems"IEEE/OSA J. Lightwave Technol.. 19,8. 1194-1205 (2001)

M.Jablonski、Y.Takushima.K.Kikuchi：“超快光纤传输系统中用于三阶色散补偿的全通滤波器的实现”IEEE/OSA J. Lightwave Technol.. 19,8。

M.Jaburonski,Y.Takushima,K.Kikuchi,Y.Tanaka,S.thgash: "Adjustable coupled Two-cavity allpass filter for dispersion slope compensation of optial fibres"Electronics Letters. 38・6. 511-512 (2000)

M. Jaburonski、Y. Takushima、K. Kikuchi、Y. Tanaka、S. thgash：“用于光纤色散斜率补偿的可调节耦合双腔全通滤波器”Electronics Letters 38・6 (2000)。

K. Kikuchi and Y. Takushima: ""Dispersion management in long-distance optical transmission system""Journal of the Institute of Electronics, Information and Communication Engineers. vol. 83, no. 10. 737-747 (2000)

K. Kikuchi和Y. Takushima：““长距离光传输系统中的色散管理””电子信息通信工程师学会杂志。

M. Jablonski, Y. Takushima, K. Kikuchi: ""The realization of all-pass filters for third-order dispersion compensation in ultrafast optical fiber transmission systems""IEEE/OSA J. Lightwave Technol.. vol. 19, no 8. 1194-1205 (2001)

M. Jablonski、Y. Takushima、K. Kikuchi：“超快光纤传输系统中用于三阶色散补偿的全通滤波器的实现””IEEE/OSA J. Lightwave Technol.. vol.