WR链路不对称系数测量
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- 英文论文题名：Method to Measure Fiber Asymmetry In WR
- 论文作者：李鸿明 ; 龚光华 ; 潘维斌
- 英文论文作者：Li Hongming ; Gong Guanghua ; Pan Weibin ; Dept.of Tsinghua University
- 年：2014
- 作者机构：清华大学工程物理系;
- 论文关键词：WR网络 ; 收发延时 ; 不对称系数
- 英文论文关键词：WR Network ; Transmit/receive delays ; Fiber Asymmetry
- 会议召开时间：2014-08-13
- 会议录名称：第十七届全国核电子学与核探测技术学术年会论文集
- 语种：中文
- 分类号：TN929.11
- 学会代码：HDZX
- 会议名称：第十七届全国核电子学与核探测技术学术年会
- 会议地点：中国甘肃兰州
- 主办单位：中国电子学会、中国核学会核电子学与核探测技术分会
- 学会名称：中国电子学会核电子学与核探测技术分会
- 页数：3
- 文件大小：481k
- 原文格式：D
- 会议级别：全国
摘要
White Rabbit网络是基于千兆光纤以太网的同步网络,能够实现网络全局亚纳秒级的同步精度。WR链路采用的光纤收发模块接收和发送信号的波长分别为1550nm和1310nm,光纤的色散会导致光纤对不同波长的光的折射率不同,进而导致光的传播速度不同,从而使得光纤上的收发延时不相等。本文用实验的手段测量得到收发延时之间的比例系数。
White Rabbit Network is a synchronous network based on optical gigabit Ethernet, which can provides an accurate clock synchronization below 1ns. WR uses different wavelengths for transmitting and receiving the data(1550/1310nm), which leading to different delays because of chromatic dispersion of the fiber. The paper describes an experiment method to measure the fiber asymmetry between transmit and receive delays.
White Rabbit Network is a synchronous network based on optical gigabit Ethernet, which can provides an accurate clock synchronization below 1ns. WR uses different wavelengths for transmitting and receiving the data(1550/1310nm), which leading to different delays because of chromatic dispersion of the fiber. The paper describes an experiment method to measure the fiber asymmetry between transmit and receive delays.
引文
[1]Tomasz W?ostowski,“Precise time and frequency Transfer in a White Rabbit network”Warsaw University of Technology,May 2011.
[2]Grzegorz Daniluk,“White Rabbit Calibration Proposal”,CERN,2012
[3]E.G.Cota,M.Lipiński,T.W?ostowski,E.V.D.Bij,J.Serrano.White Rabbit Specification:Draft for Comments.http://www.ohwr.org/documents/21,2010
[4]J.Serrano,P.Alvarez,M.Cattin,E.G.Cota,J.H.Lewis,P.Moreira,T.Wlostowski and others.The White Rabbit Project.In ICALEPCS TUC004,200
[5]WR Developers.Open Hardware Repository.http://ohwr.org/projects/white-rabbit
[2]Grzegorz Daniluk,“White Rabbit Calibration Proposal”,CERN,2012
[3]E.G.Cota,M.Lipiński,T.W?ostowski,E.V.D.Bij,J.Serrano.White Rabbit Specification:Draft for Comments.http://www.ohwr.org/documents/21,2010
[4]J.Serrano,P.Alvarez,M.Cattin,E.G.Cota,J.H.Lewis,P.Moreira,T.Wlostowski and others.The White Rabbit Project.In ICALEPCS TUC004,200
[5]WR Developers.Open Hardware Repository.http://ohwr.org/projects/white-rabbit