专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06381048B1 Wavelength division multiplexed system having reduced cross-phase modulation 有权
标题翻译：具有减少的交叉相位调制的波分复用系统
公开(公告)号：US06381048B1
公开(公告)日：2002-04-30
申请号：US09153605
申请日：1998-09-15
申请人： Andrew Roman Chraplyvy , Robert Meachem Jopson , Lynn E. Nelson , Thomas A. Strasser
发明人： Andrew Roman Chraplyvy , Robert Meachem Jopson , Lynn E. Nelson , Thomas A. Strasser
IPC分类号： H04J1402
CPC分类号： H04B10/2557 , H04J14/02 , H04L7/0075
摘要： Resonances in cross-phase-modulation (CPM) impairment occur in wavelength-division-multiplexed (WDM) transmission systems, having multiple equal dispersion-length amplifier spans, when channels have an integral number of bit walk-throughs per amplifier span. The CPM resonances are reduced by mis-matching the amplifier span lengths (and/or dispersion in each span) so an integral number of bit walk-throughs do not occur in successive amplifier spans. The CPM resonances are reduced by adding different lengths of dispersion-compensating fiber to each span, using different modulation bit rates and/or clock phase delay for each channel, and using different wavelength-selective clock phase delays for each channel.
摘要翻译：交叉相位调制（CPM）损伤中的共振发生在具有多个相等色散长度放大器跨度的波分复用（WDM）传输系统中，当通道具有每个放大器跨度的整数位位移时。通过误差匹配放大器跨度长度（和/或每个跨度中的色散）来减少CPM谐振，因此在连续的放大器跨度中不会发生整数位的位移。通过使用每个通道的不同调制比特率和/或时钟相位延迟以及为每个通道使用不同的波长选择性时钟相位延迟，为每个跨度添加不同长度的色散补偿光纤来降低CPM谐振。

2. 发明授权

US06768541B2 Chromatic dispersion measurement 有权
标题翻译：色散测量
公开(公告)号：US06768541B2
公开(公告)日：2004-07-27
申请号：US10306264
申请日：2002-11-27
申请人： James Power Gordon , Robert Meachem Jopson , Herwig Werner Kogelnik , Lynn E. Nelson
发明人： James Power Gordon , Robert Meachem Jopson , Herwig Werner Kogelnik , Lynn E. Nelson
IPC分类号： G01N2100
CPC分类号： G01M11/333 , G01M11/335 , G01M11/336
摘要： In one method, two light signals, of the same optical frequency, but having orthogonal states of polarization, are transmitted through an optical device and the mean signal delay of each of the light signals is measured. Calculations, based upon disclosed relationships, provide the polarization-independent delay (&tgr;0) through the optical device based upon the mean signal delays (&tgr;g1 and &tgr;g(−1)) of each of the light signals. By comparing &tgr;0 at adjacent wavelengths, the chromatic dispersion of the optical device can be accurately measured even in the presence of PMD. In a second, similar method, four light signals of non-degenerate polarizations states that span Stokes space are utilized. In a modification of the above-described methods based on the measurement of pulse delays, the methods are adapted to the measurement of phase delays of sinusoidally modulated signals.
摘要翻译：在一种方法中，具有相同光频率但具有正交偏振状态的两个光信号通过光学器件传输，并且测量每个光信号的平均信号延迟。基于公开的关系的计算基于每个光信号的平均信号延迟（taug1和taug（-1）），通过光学装置提供偏振无关延迟（τ0）。通过比较相邻波长的τ0，即使在存在PMD的情况下也能够精确地测量光学器件的色散。在第二种类似的方法中，利用跨越斯托克斯空间的非退化极化状态的四个光信号。在基于脉冲延迟测量的上述方法的修改中，该方法适于测量正弦调制信号的相位延迟。

3. 发明授权

US06519027B1 Polarization mode dispersion measurement 有权
标题翻译：极化模式色散测量
公开(公告)号：US06519027B1
公开(公告)日：2003-02-11
申请号：US09520537
申请日：2000-03-08
申请人： James Power Gordon , Robert Meachem Jopson , Herwig Werner Kogelnik , Lynn E. Nelson
发明人： James Power Gordon , Robert Meachem Jopson , Herwig Werner Kogelnik , Lynn E. Nelson
IPC分类号： G01N2100
CPC分类号： G01M11/336 , G01M11/333 , G01M11/335
摘要： Four different light signals, all of the same optical frequency, but, having different states of polarization, are transmitted through an optical device and the mean signal delay of each of the light signals is measured. Calculations, based upon the relationship, &tgr;g=&tgr;0−½ {right arrow over (&OHgr;)}·{overscore (s)}, describing the polarization dependence of &tgr;g (a measured mean signal delay) through the device as a function of &tgr;0 (a polarization independent delay component of the device), {right arrow over (&OHgr;)} (the PMD vector at the device input) and {overscore (s)} (the input Stokes vector of the light signal), yield the PMD of the device. Also, by comparing data taken at adjacent wavelengths, the chromatic dispersion of the optical device can be accurately measured even in the presence of PMD.
摘要翻译：四个不同的光信号，所有相同的光频率，但是具有不同的偏振状态，通过光学器件传输，并且测量每个光信号的平均信号延迟。基于该关系计算taug = tau0-½（右箭头（OMEGA。）{overscore（s，描述通过器件的taug的极化依赖性（测量的平均信号延迟）作为τ0的函数（偏振独立延迟器件的组件），{右箭头（OMEGA（器件输入端的PMD矢量））和{overscore（s（光信号的输入斯托克斯矢量））产生器件的PMD，并且通过比较数据在相邻的波长处，即使在存在PMD的情况下也能够精确地测量光学装置的色散。

4. 发明授权

US09031419B2 Optical networks using multi-spatial mode media 有权
标题翻译：使用多空间模式媒体的光网络
公开(公告)号：US09031419B2
公开(公告)日：2015-05-12
申请号：US13247230
申请日：2011-09-28
申请人： Sheryl Woodward , Martin Birk , Michael Brodsky , Lynn E. Nelson , Xiang Zhou , Mark D. Feuer
发明人： Sheryl Woodward , Martin Birk , Michael Brodsky , Lynn E. Nelson , Xiang Zhou , Mark D. Feuer
IPC分类号： H04B10/00 , H04J14/04 , H04B10/2581 , H04B10/50 , H04J14/02
CPC分类号： H04J14/04 , H04B10/2581 , H04B10/5053 , H04J14/02 , H04J14/0212
摘要： A fiber optic system includes a transmitter for transmitting high-speed streaming electrical data to a receiver for receiving the high-speed data. In order to transmit multiple channels in the system at high-speeds, an electrical data signal is converted into multiple optical sub-signals. Each of the multiple optical sub-signals are transmitted at the common wavelength on multi-spatial mode media. The receiver receives the multiple optical sub-signals as a multi-spatial mode optical signal and separates the multi-spatial mode optical signal into branch signals having a common wavelength. The receiver mixes each of the branch signals with optical carrier waves having the common wavelength and converts the branch signals into electrical signals. Digital signal processing is used to recover the data sub-signals which are used to recover the original data signal.
摘要翻译：光纤系统包括用于将高速流式电气数据传送到用于接收高速数据的接收器的发射器。为了在系统中以高速传输多个信道，电数据信号被转换成多个光子信号。多个光子信号中的每一个在多空间模式媒体上以公共波长传输。接收机接收多个光子信号作为多空间模式光信号，并将多空间模式光信号分离为具有共同波长的分支信号。接收器将每个分支信号与具有公共波长的光载波混合，并将分支信号转换成电信号。数字信号处理用于恢复用于恢复原始数据信号的数据子信号。

5. 发明授权

US08160443B2 Calibration factor for interferometric optical signal-to-noise ratio measurement 有权
标题翻译：用于干涉光信噪比测量的校准因子
公开(公告)号：US08160443B2
公开(公告)日：2012-04-17
申请号：US12283658
申请日：2008-09-15
申请人： Mikhail Brodsky , Mark David Feuer , Lynn E. Nelson , Jungmi Oh
发明人： Mikhail Brodsky , Mark David Feuer , Lynn E. Nelson , Jungmi Oh
IPC分类号： H04B10/08
CPC分类号： H04B10/07953
摘要： Systems and methods are described that measure the OSNR of an optical channel. Embodiments provide OSNR measurement methods that distinguish the intensities of the coherent modulated signal from the incoherent noise intensity occupying the same optical band using a calibration factor ζ.
摘要翻译：描述了测量光信道的OSNR的系统和方法。实施例提供了使用校准因子ζ将相干调制信号的强度与占据相同光带的非相干噪声强度区分开的OSNR测量方法。

6. 发明授权

US07206123B2 Raman amplifier, pump source for use in a raman amplifier and method for amplifying an optical signal 有权
标题翻译：拉曼放大器，用于拉曼放大器的泵浦源和用于放大光信号的方法
公开(公告)号：US07206123B2
公开(公告)日：2007-04-17
申请号：US10935286
申请日：2004-09-08
申请人： Yoshihiro Emori , Jake Bromage , Lynn E. Nelson , Shu Namiki
发明人： Yoshihiro Emori , Jake Bromage , Lynn E. Nelson , Shu Namiki
IPC分类号： H01S4/00 , H04B10/12
CPC分类号： H01S3/06754 , H01S3/0078 , H01S3/06758 , H01S3/094011 , H01S3/0941 , H01S3/10069 , H01S3/1305 , H01S3/302 , H04B10/2916
摘要： A method, pump and Raman amplifier control an amount of stimulated Brillouin scattering (SBS) produced by the Raman amplifier pump so as to regulate a power penalty experienced by a receiver due to the SBS. A multi-mode semiconductor laser produces a multi-mode pump light having a dominate mode at a predetermined wavelength. At least a portion of the multi-mode pump light is coupled to a Raman gain medium in a forward pumping direction. A reflection sensor monitors reflected light that is at least partially reflected from said Raman gain medium. The reflection sensor has a passband characteristic that passes optical power of a dominate SBS peak of said reflected light, but suppresses other SBS peaks that are offset in wavelength from said dominate SBS peak. The optical power of the dominate SBS peak is compared to an optical power of the multi-mode pump light, and it is determined whether a result of the comparing step is above a predetermined threshold.
摘要翻译：一种方法，泵浦和拉曼放大器控制由拉曼放大器泵产生的受激布里渊散射（SBS）的量，以便调节由于SBS而导致的接收器所经受的功率损失。多模半导体激光器产生具有预定波长的主导模式的多模式泵浦光。至少一部分多模式泵浦光在正向泵送方向上耦合到拉曼增益介质。反射传感器监测至少部分地从所述拉曼增益介质反射的反射光。反射传感器具有通过所述反射光的主要SBS峰值的光焦度的通带特性，但抑制了波长偏离所述主导SBS峰值的其他SBS峰值。将主要SBS峰值的光功率与多模式泵浦光的光功率进行比较，并且确定比较步骤的结果是否高于预定阈值。

7. 发明授权

US06385356B1 Method and apparatus for compensating for higher order PMD in a fiber transmission system 有权
标题翻译：用于补偿光纤传输系统中高阶PMD的方法和装置
公开(公告)号：US06385356B1
公开(公告)日：2002-05-07
申请号：US09468968
申请日：1999-12-22
申请人： Robert M. Jopson , Herwig Kogelnik , Lynn E. Nelson
发明人： Robert M. Jopson , Herwig Kogelnik , Lynn E. Nelson
IPC分类号： G02B600
CPC分类号： G02B6/278 , G02B6/29394 , H04B10/2569
摘要： In an optical fiber transmission system, higher order PMD compensation is realized with a sweeper device at the input to the fiber which converts the polarization of the light beam into a frequency dependent polarization whose rate of change is similar to the rate of change of one of the PSPs of the fiber. The frequency dependent polarization of the light beam is then aligned with one of the frequency-dependent PSPs at the input of the fiber. Furthermore, differential group delay dispersion for a given frequency can be reduced by employing a chromatic dispersion compensator prior to the receiver end of the fiber transmission system. Control of the polarization of the light beam can be facilitated by monitoring PMD in the system, or alternatively, monitoring an effect of PMD in the system, such as bit error rates.
摘要翻译：在光纤传输系统中，通过在光纤的输入处的扫掠装置实现更高阶的PMD补偿，其将光束的偏振转换成频率相关极化，其变化率类似于光纤的PSP。然后将光束的频率相关极化与光纤输入端的频率依赖PSP之一对准。此外，通过在光纤传输系统的接收机端之前采用色散补偿器，可以减小给定频率的差分群延迟色散。通过监视系统中的PMD，或者监视PMD在系统中的影响，比如误码率，可以方便控制光束的偏振。

8. 发明申请

US20130077967A1 Optical Networks Using Multi-spatial Mode Media 有权
标题翻译：使用多空间模式媒体的光网络
公开(公告)号：US20130077967A1
公开(公告)日：2013-03-28
申请号：US13247230
申请日：2011-09-28
申请人： Sheryl Woodward , Martin Birk , Michael Brodsky , Mark D. Feuer , Lynn E. Nelson , Xiang Zhou
发明人： Sheryl Woodward , Martin Birk , Michael Brodsky , Mark D. Feuer , Lynn E. Nelson , Xiang Zhou
IPC分类号： H04J14/04
CPC分类号： H04J14/04 , H04B10/2581 , H04B10/5053 , H04J14/02 , H04J14/0212
摘要： A fiber optic system includes a transmitter for transmitting high-speed streaming electrical data to a receiver for receiving the high-speed data. In order to transmit multiple channels in the system at high-speeds, an electrical data signal is converted into multiple optical sub-signals. Each of the multiple optical sub-signals are transmitted at the common wavelength on multi-spatial mode media. The receiver receives the multiple optical sub-signals as a multi-spatial mode optical signal and separates the multi-spatial mode optical signal into branch signals having a common wavelength. The receiver mixes each of the branch signals with optical carrier waves having the common wavelength and converts the branch signals into electrical signals. Digital signal processing is used to recover the data sub-signals which are used to recover the original data signal.
摘要翻译：光纤系统包括用于将高速流式电气数据传送到用于接收高速数据的接收器的发射器。为了在系统中以高速传输多个信道，电数据信号被转换成多个光子信号。多个光子信号中的每一个在多空间模式媒体上以公共波长传输。接收机接收多个光子信号作为多空间模式光信号，并将多空间模式光信号分离为具有共同波长的分支信号。接收器将每个分支信号与具有公共波长的光载波混合，并将分支信号转换成电信号。数字信号处理用于恢复用于恢复原始数据信号的数据子信号。

9. 发明申请

US20100239244A1 System and method for measuring the extinction ratio of an optical transmitter using an interferogram wing-to-peak ratio 有权
标题翻译：用于使用干涉图翼 - 峰比测量光发射机的消光比的系统和方法
公开(公告)号：US20100239244A1
公开(公告)日：2010-09-23
申请号：US12383300
申请日：2009-03-23
申请人： Lynn E. Nelson , Mikhail Brodsky , Jungmi Oh , Cristian Antonelli , Paul Shala Henry
发明人： Lynn E. Nelson , Mikhail Brodsky , Jungmi Oh , Cristian Antonelli , Paul Shala Henry
IPC分类号： H04B17/00
CPC分类号： H04B10/0731
摘要： Systems and methods are described that derive a relationship between an optical transmitter's extinction ratio (Er) and its interferogram wing-to-peak ratio (Iwp). The change in an optical transmitter's Iwp correlates with a change in measured Er. As the Er of a telecom signal changes, the power of the modulated signal's interferogram wings change. After a relationship between Iwp and measured Er has been derived for an optical transmitter, the relationship may be used after deployment to determine an Er by measuring an Iwp.
摘要翻译：描述了导出光发射机的消光比（Er）与其干涉图翼峰比（Iwp）之间的关系的系统和方法。光发射机的Iwp的变化与测量的Er的变化相关。随着电信信号的变化，调制信号的干涉图翼的功率发生变化。在对于光学发射机进行了Iwp和测量的Er之间的关系之后，可以在部署之后使用该关系以通过测量Iwp来确定Er。

10. 发明授权

US5617434A Stretched-pulse fiber laser 失效
标题翻译：拉伸脉冲光纤激光器
公开(公告)号：US5617434A
公开(公告)日：1997-04-01
申请号：US635846
申请日：1996-04-22
申请人： Kohichi R. Tamura , Erich P. Ippen , Hermann A. Haus , Lynn E. Nelson , Christopher R. Doerr
发明人： Kohichi R. Tamura , Erich P. Ippen , Hermann A. Haus , Lynn E. Nelson , Christopher R. Doerr
IPC分类号： H01S3/067 , H01S3/098 , H01S3/30
CPC分类号： H01S3/06791 , H01S2301/08 , H01S3/06712 , H01S3/06725 , H01S3/1112 , Y10S372/70
摘要： A fiber laser for producing high energy ultrashort laser pulses, having a positive-dispersion fiber segment and a negative-dispersion fiber segment joined in series with the positive-dispersion fiber segment to form a laser cavity. With this configuration, soliton effects of laser pulse circulation in the cavity are suppressed and widths of laser pulses circulating in the cavity undergo large variations between a maximum laser pulse width and a minimum laser pulse width during one round trip through the cavity. The fiber laser also provides means for modelocking laser radiation in the laser cavity, means for providing laser radiation gain in the laser cavity, and means for extracting laser pulses from the laser cavity. Using selected positive- and negative-dispersion fiber segments, the laser cavity exhibits a net positive group velocity dispersion, and the ratio of the maximum laser pulse width to the minimum laser pulse width attained during one round trip through the cavity is greater than 5, and preferably greater than 10. The laser cavity may be configured as a linear cavity geometry, a ring cavity geometry, a figure eight geometry, or a Sagnac loop reflector geometry, among others. Preferably the ring cavity is configured to achieve unidirectional circulation of laser pulses in the ring cavity, and with this configuration, is shown to produce laser pulses having a pulse width of less than 100 fs and a pulse energy of at least 80 pJ.
摘要翻译：一种用于生产高能超短激光脉冲的光纤激光器，具有与正色散光纤段串联的正色散光纤段和负色散光纤段，以形成激光腔。通过这种配置，抑制腔内的激光脉冲循环的孤子效应，并且在通过空腔的一次往返行程期间在空腔中循环的激光脉冲的宽度在最大激光脉冲宽度和最小激光脉冲宽度之间经历较大的变化。光纤激光器还提供用于在激光腔中锁模激光辐射的装置，用于在激光腔中提供激光辐射增益的装置，以及用于从激光腔提取激光脉冲的装置。使用选定的正和负色散光纤段，激光腔表现出净正组速度色散，最大激光脉冲宽度与通过腔体的一次往返行程中获得的最小激光脉冲宽度之比大于5，并且优选地大于10.激光腔可以被配置为线性腔几何形状，环形腔几何形状，图形八面体形状或者Sagnac环形反射器几何形状等等。优选地，环腔被配置为实现激光脉冲在环腔中的单向循环，并且在该配置下，示出了产生具有小于100fs的脉冲宽度和至少80pJ的脉冲能量的激光脉冲。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式