Wavelength modulation for optical based switching and routing
    3.
    发明申请
    Wavelength modulation for optical based switching and routing 失效
    用于光学切换和路由的波长调制

    公开(公告)号:US20030059157A1

    公开(公告)日:2003-03-27

    申请号:US09964190

    申请日:2001-09-26

    IPC分类号: G02B006/28

    摘要: A method and system for modulating an optical signal to encode data therein. The method comprises the steps of directing the optical signal through a filter mechanism having a passband function including a center wavelength, and modulating the center wavelength of the optical signal to establish a difference between the center wavelengths of the filter mechanism and the optical signal to represent a data value. With the preferred implementation of the invention, a transmit device is used to encode the data in the optical signal, and a receive device is provided to decode the signal. The transmit device modulates the center wavelength of the optical signal to establish a difference between the center wavelength and a predefined wavelength to encode data in the optical signal, and the transmit device then transmits the optical signal. The receive device receives the optical signal from the transmit device and processes that signal to identify the encoded data.

    摘要翻译: 一种用于调制光信号以对其中的数据进行编码的方法和系统。 该方法包括以下步骤:通过具有包括中心波长的通带功能的滤波器机构引导光信号,并调制光信号的中心波长,以建立滤波器机构的中心波长与光信号之间的差异,以表示 一个数据值。 利用本发明的优选实现方式,使用发送设备对光信号中的数据进行编码,并提供接收设备来对信号进行解码。 发送装置调制光信号的中心波长,建立中心波长与预定波长的差值,对光信号中的数据进行编码,然后发送装置发送光信号。 接收设备从发送设备接收光信号并处理该信号以识别编码数据。

    Apparatus and method for wavelength-locked loops for systems and applications employing electromagnetic signals
    4.
    发明申请
    Apparatus and method for wavelength-locked loops for systems and applications employing electromagnetic signals 有权
    用于采用电磁信号的系统和应用的波长锁定环路的装置和方法

    公开(公告)号:US20020176457A1

    公开(公告)日:2002-11-28

    申请号:US09865256

    申请日:2001-05-25

    IPC分类号: H01S003/098

    摘要: A wavelength-locked loop servo-control circuit and methodology that enables real time mutual alignment of an electromagnetic signal having a peaked spectrum function including a center wavelength and a wavelength selective device implementing a peaked passband function including a center wavelength, in a system employing electromagnetic waves. The circuit comprises a mechanism for applying a dither modulation signal at a dither modulation frequency to the electromagnetic signal, and inputting the dither modulated electromagnetic signal to the wavelength selective device; a mechanism for converting a portion of the dither modulated electromagnetic signal to an electric feedback signal; a mechanism for continuously comparing the feedback signal with said dither modulation signal and generating an error signal representing a difference between a frequency characteristic of the feedback signal and a dither modulation frequency; and a mechanism for adjusting the peaked spectrum function of the electromagnetic signal according to the error signal. The center wavelength of the electromagnetic signal and the wavelength selective device center wavelength become aligned when the frequency characteristic of the feedback signal is two times the dither modulation frequency.

    摘要翻译: 一种波长锁定环路伺服控制电路和方法,其使得能够在包括中心波长的峰值频谱功能的电磁信号和实现包括中心波长的峰值通带功能的波长选择装置的实时相互对准中使用电磁 波浪。 该电路包括用于将抖动调制信号以抖动调制频率施加到电磁信号的机构,并将该抖动调制的电磁信号输入到该波长选择装置; 用于将抖动调制电磁信号的一部分转换成电反馈信号的机构; 用于连续地比较反馈信号与所述抖动调制信号并产生表示反馈信号的频率特性与抖动调制频率之间的差的误差信号的机构; 以及根据误差信号调整电磁信号的峰值频谱功能的机构。 当反馈信号的频率特性是抖动调制频率的两倍时,电磁信号的中心波长和波长选择装置中心波长对准。

    TUNABLE FIBER BRAGG GRATINGS AND WAVELENGTH-LOCKED LOOPS FOR DISPERSION COMPENSATION
    6.
    发明申请
    TUNABLE FIBER BRAGG GRATINGS AND WAVELENGTH-LOCKED LOOPS FOR DISPERSION COMPENSATION 有权
    可分离光纤布拉格光栅和波长补偿灯泡

    公开(公告)号:US20030072528A1

    公开(公告)日:2003-04-17

    申请号:US09976546

    申请日:2001-10-12

    IPC分类号: G02B006/34 G02B006/28

    摘要: A system and method for precisely controlling the wavelength selective function provided by fiber Bragg gratings in optical fiber elements. The system and method exploits a wavelength-locked loop servo-control circuit and methodology that enables real time adjustment of the grating pattern being written to said fiber optical link element by a grating writing source to thereby mutually align a center wavelength of the peaked wavelength selective function resulting from the grating pattern with a center wavelength of the optical signal transmitted over a communication channel provided by the fiber. A real-time adaptive dispersion compensation technique for optical fibers is additionally provided that exploits the wavelength-locked loop servo-control circuit. In the adaptive compensation system, a tunable Bragg grating pattern is re-written to the fiber optical link element by a grating writing source under control of the wavelength-locked loop servo-control circuit in order to mutually align a center wavelength of the peaked wavelength selective function resulting from the grating pattern with a center wavelength of an optical signal to be transmitted over the channel.

    摘要翻译: 一种用于精确控制由光纤元件中的光纤布拉格光栅提供的波长选择功能的系统和方法。 该系统和方法利用了一种波长锁定环路伺服控制电路和方法,其能够通过光栅写入源对被写入所述光纤链路元件的光栅图案进行实时调整,从而相互对准峰值波长选择性的中心波长 通过由光纤提供的通信信道发送的具有光信号的中心波长的光栅图案产生的功能。 另外提供了利用波长锁定环路伺服控制电路的光纤的实时自适应色散补偿技术。 在自适应补偿系统中,通过在波长锁定环路伺服控制电路的控制下的光栅写入源将可调布拉格光栅图案重新写入光纤光连接元件,以便相互对准峰值波长的中心波长 由具有要在通道上传输的光信号的中心波长的光栅图案产生的选择性功能。

    Frequency guiding filter for dispersion managed soliton transmission

    公开(公告)号:US20030058512A1

    公开(公告)日:2003-03-27

    申请号:US09962871

    申请日:2001-09-25

    IPC分类号: H04B010/06

    摘要: Wavelength locked feedback loops are provided in frequency guide filters, and particularly in sliding frequency guide filters, wherein the wavelength locked feedback loop allows precise control over the location of the filter center wavelength with respect to a transmitted soliton center wavelength, compensating for factors such as the filter rolloff, signal spectral width, and changes in the transmission line properties due to temperature, microbending, aging and other effects. This approach allows the construction of very inexpensive frequency guiding filters, which can be based on low precision frequency domain filters with active compensation. These advantages make it possible to design new types of dispersion managed soliton optical transmission networks.

    Method and system for synchronizing optical clocks
    8.
    发明申请
    Method and system for synchronizing optical clocks 失效
    用于同步光时钟的方法和系统

    公开(公告)号:US20030058010A1

    公开(公告)日:2003-03-27

    申请号:US09962500

    申请日:2001-09-25

    IPC分类号: H03L007/00

    摘要: A method and system for synchronizing a local optical clock with a master optical clock, wherein the local clock generates a local clock signal at a local clock wavelength, and said master clock generates a master clock signal at a master clock wavelength. The method comprises the steps of dithering the wavelengths of the local and master clock signals, and generating a control signal representing the difference between the dithered wavelengths of the local and master clock signals. That control signal is then used to synchronize the local clock with the master clock. Preferably, a wavelength-locked loop is used as a means of phase or wavelength control for the optically distributed clock signals. The wavelength-locked loop provides a technique to control the wavelength of a local optical clock source in a manner that will allow the local clock to follow variations in the wavelength of another optical signal.

    摘要翻译: 一种用于使本地光时钟与主光时钟同步的方法和系统,其中本地时钟以本地时钟波长生成本地时钟信号,并且所述主时钟以主时钟波长生成主时钟信号。 该方法包括以下步骤:使本地和主时钟信号的波长抖动,并产生表示本地和主时钟信号的抖动波长之差的控制信号。 然后,该控制信号用于将本地时钟与主时钟同步。 优选地,使用波长锁定环作为用于光分布式时钟信号的相位或波长控制的手段。 波长锁定环路提供了一种技术,可以以允许本地时钟跟随另一光信号的波长变化的方式来控制本地光时钟源的波长。

    OPTICAL BACKPLANE ARRAY CONNECTOR
    9.
    发明申请
    OPTICAL BACKPLANE ARRAY CONNECTOR 有权
    光学背板阵列连接器

    公开(公告)号:US20040208453A1

    公开(公告)日:2004-10-21

    申请号:US10272694

    申请日:2002-10-16

    IPC分类号: G02B006/26

    摘要: An apparatus and method for forming a staircase arrangement for the connection of optical waveguides between a card and backplane. A card having optical waveguides and electrical conductors embedded in the card has an edge ending in a staircase arrangement with optical fiber-ribbons protruding from the edge. A guidance structure is connected to the edge and contains channels to guide and align the optical fiber-ribbons. A backplane having embedded optical waveguides and electrical conductors also has an edge ending in a staircase arrangement with a guidance structure connected to the edge and tapered openings which receive and guide the optical fiber-ribbons into close proximity with the optical waveguides and forming a staircase arrangement of connected waveguides between a card and backplane.

    摘要翻译: 一种用于形成用于在卡和背板之间连接光波导的阶梯布置的装置和方法。 具有嵌入在卡中的光波导和电导体的卡具有终止于从边缘突出的光纤带的阶梯结构的边缘。 引导结构连接到边缘并且包含用于引导和对准光纤带的通道。 具有嵌入式光波导和电导体的背板还具有以阶梯结构结束的边缘,其具有连接到边缘的引导结构和锥形开口,其将光纤带接收并引导到光波导附近并形成阶梯布置 在卡和背板之间连接的波导。