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    • 1. 发明授权
    • Dispersion-map measurements of optical fibers
    • 光纤的色散映射测量
    • US6067149A
    • 2000-05-23
    • US211201
    • 1998-12-14
    • Jurgen GrippLinn F. Mollenauer
    • Jurgen GrippLinn F. Mollenauer
    • G01M11/00G01N21/00
    • G01M11/39G01M11/319
    • Apparatus for measuring the dispersion and dispersion parameter of an optical fiber as a function of distance (the dispersion map) by the optical-time-domain reflection technique uses a multi-frequency laser with an extra cavity semiconductor optical amplifier switch to generate the short pulses of two wavelengths to displace the four-wave mixing oscillations away from the origin of the complex plane. Additionally laser power is supplied at both ends of the fiber under test to provide pump power to Raman amplify the backscattered signal being measured. Finally a novel Fast Fourier Transform based algorithm is used to calculate the dispersion map fast and accurately.
    • 用于通过光时域反射技术测量作为距离(色散图)的函数的光纤的色散和色散参数的装置使用具有额外空腔半导体光放大器开关的多频激光器来产生短脉冲 的两个波长以将四波混频振荡移位离开复平面的原点。 此外,在被测光纤的两端提供激光功率,以向拉曼提供泵浦功率,放大所测量的反向散射信号。 最后,使用基于快速傅立叶变换的算法快速准确地计算色散图。
    • 2. 发明授权
    • Tunable receiver
    • 可调式接收器
    • US09166700B2
    • 2015-10-20
    • US12751990
    • 2010-03-31
    • Jurgen GrippJohn Edward SimsarianMartin Zirngibl
    • Jurgen GrippJohn Edward SimsarianMartin Zirngibl
    • H04B10/06H04B10/61H04J14/02H04J14/06
    • H04B10/613H04B10/61H04B10/611H04B10/6161H04J14/0204H04J14/021H04J14/0227H04J14/0257H04J14/0283H04J14/06
    • Embodiments for optical communication are provided in which tunable receiver selects and demodulates a first channel of a WDM signal. An example receiver includes a tunable local oscillator for generating a local oscillator signal approximately centered at a first channel wavelength. An optical hybrid of the receiver receives at a first input a wavelength-division-multiplexed (WDM) signal with a M-ary modulation scheme, wherein M is an integer greater than 2, and at a second input the local oscillator signal. A plurality of detectors detect in-phase and quadrature components of the first channel wavelength output of the optical hybrid, which are digitizing by a plurality of analog-to-digital converters. A digital signal processor processes the digitized in-phase and quadrature components in order to recover data carried by the first channel of the WDM signal.
    • 提供了光通信的实施例,其中可调谐接收机选择和解调WDM信号的第一信道。 示例性接收器包括用于产生大致居中在第一信道波长的本地振荡器信号的可调本地振荡器。 接收机的光混合器在第一输入处接收具有M进制调制方案的波分复用(WDM)信号,其中M是大于2的整数,在第二输入处接收本地振荡器信号。 多个检测器检测由多个模数转换器数字化的光混合器的第一通道波长输出的同相和正交分量。 数字信号处理器处理数字化的同相和正交分量,以便恢复由WDM信号的第一通道承载的数据。
    • 3. 发明授权
    • Monitoring system for an optical transmitter
    • 光发射机的监控系统
    • US07149425B2
    • 2006-12-12
    • US10135785
    • 2002-04-30
    • Jurgen GrippOldrich M. Laznicka
    • Jurgen GrippOldrich M. Laznicka
    • H04B10/08
    • H04B10/572
    • Certain embodiments of the present invention provide a monitoring system configured to monitor output wavelengths, power, and channel switching of tunable lasers employed in an optical transmitter and provide feedback to those lasers, e.g., to lock on the wavelengths corresponding to optical channels in the transmitter. The monitoring system has a monitoring switch fabric, such as an optical waveguide grating (AWG), and one or more photodetector arrays coupled to the transmitter. Optical channels in the monitoring AWG may be offset relative to the optical channels in the transmitter and shaped to allow more sensitive monitoring of, e.g., wavelength drifting of the tunable lasers. The monitoring system may track the lasers in a non-disruptive continuous manner while data is transmitted through the transmitter.
    • 本发明的某些实施例提供了一种监视系统,其被配置为监视在光发射机中采用的可调激光器的输出波长,功率和通道切换,并向这些激光器提供反馈,例如锁定对应于发射器中的光通道的波长 。 监控系统具有诸如光波导光栅(AWG)的监控开关结构以及耦合到发射器的一个或多个光电检测器阵列。 监控AWG中的光通道可以相对于发射器中的光通道偏移并且被成形为允许对可调谐激光器的例如波长漂移的更敏感的监测。 监测系统可以以非破坏性的连续方式跟踪激光器,同时通过发射器传输数据。
    • 5. 发明授权
    • Parallelization of optical switch fabrics
    • 光交换机的并行化
    • US06829401B2
    • 2004-12-07
    • US10135216
    • 2002-04-30
    • Marcus DuelkJurgen Gripp
    • Marcus DuelkJurgen Gripp
    • G02B628
    • H04Q11/0005H04Q2011/0018H04Q2011/0024H04Q2011/0032H04Q2011/0039H04Q2011/005
    • A switch employs two or more parallel optical switch fabrics, e.g., arrayed waveguide gratings (AWG), combined with a set of transmitter cards. Each transmitter card has a tunable laser and two or more modulators, each configured to modulate a different copy of the output of the laser with a different set of data. Outputs of the modulators in each transmitter card are coupled to a set of corresponding input ports in the AWGs. A set of receiver cards, each receiver card having the number of receivers matching that of modulators in the transmitter cards, is coupled to output ports of the AWGs, such that each receiver card receives signals from a set of corresponding output ports in the AWGs. Each transmitter card can be configured to send data to any receiver card by setting the wavelength of its laser to the value corresponding to the set of output ports in the AWGs coupled to that receiver card. A parallelized optical switch may be optimized based on a desired set of criteria, e.g., capacity, cost, and/or size.
    • 开关采用两个或更多个平行的光交换结构,例如与一组发射机卡组合的阵列波导光栅(AWG)。 每个发射器卡具有可调激光器和两个或更多个调制器,每个调制器被配置成用不同的数据集来调制激光器的输出的不同副本。 每个发射器卡中的调制器的输出耦合到AWG中的一组相应的输入端口。 一组接收器卡,具有与发送器卡中的调制器的接收器匹配的接收器数量的每个接收器卡被耦合到AWG的输出端口,使得每个接收器卡从AWG中的一组对应的输出端口接收信号。 每个发射器卡可以被配置为通过将其激光器的波长设置为对应于耦合到该接收器卡的AWG中的输出端口集合的值来向任何接收器卡发送数据。 可以基于期望的一组标准(例如容量,成本和/或尺寸)来优化并行化的光学开关。