公开(公告)号：US07881611B2

公开(公告)日：2011-02-01

申请号：US12405559

申请日：2009-03-17

Applicant: Georg H. Mohs ,  Stuart M. Abbott ,  Franklin W. Kerfoot, III ,  R. Brian Jander ,  Morten Nissov

Inventor： Georg H. Mohs ,  Stuart M. Abbott ,  Franklin W. Kerfoot, III ,  R. Brian Jander ,  Morten Nissov

IPC: H04B10/02 ,  H04B10/08

CPC classification number: H04J14/0221 ,  H04B10/564

Abstract: A system and method for loading unutilized channels of a WDM system with noise to improve system performance. A transmitter amplifier may impart noise to unutilized channels by reducing amplifier input or providing feedback of the amplifier output. Noise signals may also be looped back to the transmitter from received signals.

Abstract translation: 用于加载具有噪声的WDM系统的未利用信道以提高系统性能的系统和方法。 发射机放大器可以通过减少放大器输入或提供放大器输出的反馈来给未使用的信道赋予噪声。 噪声信号也可以从接收到的信号循环回发射机。

公开(公告)号：US07373040B2

公开(公告)日：2008-05-13

申请号：US11734987

申请日：2007-04-13

Applicant: Jin-Xing Cai ,  Dmitri Foursa ,  Carl R. Davidson ,  Alexei N. Pilipetskii ,  Morten Nissov ,  Neal S. Bergano

Inventor： Jin-Xing Cai ,  Dmitri Foursa ,  Carl R. Davidson ,  Alexei N. Pilipetskii ,  Morten Nissov ,  Neal S. Bergano

IPC: G02B6/28

CPC classification number: H04B10/25253 ,  G02B6/29376 ,  H04B10/25133

Abstract: A WDM optical transmission system and method uses slope compensation at the transmit terminal and/or the receive terminal. The system and method may be used with modulation formats with a short pulse width and a broad optical spectrum.

Abstract translation: WDM光传输系统和方法在发射终端和/或接收终端处使用斜率补偿。 该系统和方法可以使用具有短脉冲宽度和宽光谱的调制格式。

公开(公告)号：US07363553B2

公开(公告)日：2008-04-22

申请号：US10972289

申请日：2004-10-22

Applicant: Yi Cai ,  Alexei N. Pilipetskii ,  Morten Nissov

Inventor： Yi Cai ,  Alexei N. Pilipetskii ,  Morten Nissov

IPC: H03M13/00

CPC classification number: H03M13/45

Abstract: The soft decision thresholds in a soft decision forward error correction (FEC) system may be adjusted based on mutual information of a detected signal. In one embodiment, a recursive algorithm may be used to optimize threshold values by maximizing the mutual information. In another embodiment, an adaptive scheme may be used to optimize threshold values based on a pre-knowledge of the noise in the channel. In a further embodiment, an adaptive scheme may be used to optimize threshold values by without pre-knowledge of the noise in the channel.

Abstract translation: 可以基于检测到的信号的相互信息来调整软判决前向纠错（FEC）系统中的软判决阈值。 在一个实施例中，可以使用递归算法来通过使互信息最大化来优化阈值。 在另一个实施例中，可以使用自适应方案来基于信道中噪声的预先了解来优化阈值。 在另一个实施例中，可以使用自适应方案来通过没有对信道中的噪声的预先知识来优化阈值。

公开(公告)号：US06873798B1

公开(公告)日：2005-03-29

申请号：US09706475

申请日：2000-11-03

Applicant: Alexei Pilipetskii ,  Matthew Ma ,  Morten Nissov

Inventor： Alexei Pilipetskii ,  Matthew Ma ,  Morten Nissov

IPC: H04B10/02 ,  G02B6/34 ,  H04B10/18 ,  H04J14/02 ,  H04B10/12

CPC classification number: G02B6/29376 ,  H04B10/25253

Abstract: An apparatus comprises an optical sublink including an operationally coupled optical fiber segments. The optical fiber segments are from a first optical fiber type, a second optical fiber type and a third optical fiber type. The first optical fiber type has a positive dispersion and a positive dispersion slope. The second optical fiber type has a negative dispersion and a negative dispersion slope. The third optical fiber type has one from the group of (1) a positive dispersion and a negative dispersion slope, and (2) a negative dispersion and a positive dispersion slope.

Abstract translation: 一种装置包括包括可操作耦合的光纤段的光子链路。 光纤段由第一光纤类型，第二光纤类型和第三光纤类型组成。 第一光纤类型具有正色散和正色散斜率。 第二光纤类型具有负色散和负色散斜率。 第三种光纤类型具有（1）正色散和负色散斜率的组中的一种，以及（2）负色散和正色散斜率。

公开(公告)号：US06731381B2

公开(公告)日：2004-05-04

申请号：US09794837

申请日：2001-02-27

Applicant: Chinlon Lin ,  Michael Mills ,  Morten Nissov

Inventor： Chinlon Lin ,  Michael Mills ,  Morten Nissov

IPC: G01N2100

CPC classification number: H04B10/0731 ,  H01S3/0014 ,  H01S3/06754 ,  H01S3/1608

Abstract: A test apparatus includes a broadband noise source, a test station, and a spectrum analyzer. A method using the test apparatus to measure the spectral gain of an erbium doped fiber amplifier (EDFA) under test includes steps of providing an optical signal from a broadband noise source to an input of the EDFA under test, measuring a power at a test wavelength at an output of the EDFA under test, adjusting the test wavelength, and repeating the steps of measuring and adjusting for a predetermined number of times.

Abstract translation: 测试装置包括宽带噪声源，测试台和频谱分析仪。 使用测试装置测量被测掺铒光纤放大器（EDFA）的光谱增益的方法包括以下步骤：将宽带噪声源的光信号提供给被测EDFA的输入，测量测试波长的功率 在测试的EDFA的输出端，调整测试波长，并重复测量和调整预定次数的步骤。

公开(公告)号：US06396624B1

公开(公告)日：2002-05-28

申请号：US09480255

申请日：2000-01-11

Applicant: Morten Nissov ,  Bo Pedersen

Inventor： Morten Nissov ,  Bo Pedersen

IPC: H01S300

CPC classification number: H01S3/06754 ,  H01S3/06758 ,  H01S3/10023 ,  H01S2301/04

Abstract: An optical amplifier includes first, second and third amplifier stages, a first equalizer coupled between the first and second amplifier stages, a second equalizer coupled between the second and third amplifier stages, and a third equalizer coupled between an amplifier output and the third amplifier stage. The first stage includes a length of first erbium doped fiber coupled between an input and the first equalizer. The second stage includes a second erbium doped fiber coupled between the first equalizer and the second equalizer. The third stage includes a third erbium doped fiber coupled between the second equalizer and the third equalizer.

Abstract translation: 光放大器包括第一，第二和第三放大器级，耦合在第一和第二放大器级之间的第一均衡器，耦合在第二和第三放大器级之间的第二均衡器，以及耦合在放大器输出和第三放大器级之间的第三均衡器 。 第一级包括耦合在输入端和第一均衡器之间的第一掺铒光纤的长度。 第二级包括耦合在第一均衡器和第二均衡器之间的第二掺铒光纤。 第三级包括耦合在第二均衡器和第三均衡器之间的第三掺铒光纤。

公开(公告)号：US6038356A

公开(公告)日：2000-03-14

申请号：US937896

申请日：1997-09-25

Applicant: Franklin W. Kerfoot, III ,  Morten Nissov

Inventor： Franklin W. Kerfoot, III ,  Morten Nissov

IPC: H04B10/17 ,  G02B6/28

CPC classification number: H04B10/2935 ,  H04B10/2916

Abstract: A method is provided for transmitting an optical signal in an optical communication system. The system includes a transmitter for generating the optical signal, a receiver for detecting the signal, and an optical fiber communication link interposed between the transmitter and receiver. The optical fiber communication link includes transmission optical fibers concatenated with a plurality of Raman amplifiers and at least one rare earth doped optical fiber amplifier. The method includes the steps of: amplifying the optical signal as it advances through each of the plurality of Raman amplifiers; and compensating for variations in transmission path losses to restore the optical signal to a nominal power level as it advances through the rare earth doped optical fiber amplifier by maintaining the doped optical fiber amplifier in its saturated state.

Abstract translation: 提供一种在光通信系统中发送光信号的方法。 该系统包括用于产生光信号的发射机，用于检测信号的接收机和插入在发射机和接收机之间的光纤通信链路。 光纤通信链路包括与多个拉曼放大器和至少一个稀土掺杂光纤放大器连接的传输光纤。 该方法包括以下步骤：当光信号前进通过多个拉曼放大器中的每一个时，放大光信号; 并且补偿传输路径损耗的变化，以便通过将掺杂的光纤放大器维持在其饱和状态，当光信号前进通过稀土掺杂光纤放大器时，将光信号恢复到额定功率电平。

公开(公告)号：US08401402B2

公开(公告)日：2013-03-19

申请号：US12718154

申请日：2010-03-05

Applicant: Yi Cai ,  Morten Nissov ,  Alexei N. Pilipetskii

Inventor： Yi Cai ,  Morten Nissov ,  Alexei N. Pilipetskii

IPC: H04B10/00 ,  H04B10/06

CPC classification number: H04L27/066 ,  H04J14/02 ,  H04J14/0279 ,  H04L1/005 ,  H04L1/203 ,  H04L1/208 ,  H04L5/0008 ,  H04L25/03171 ,  H04L27/223 ,  H04L27/227 ,  H04L27/3818 ,  H04L2027/0067 ,  H04L2027/0095

Abstract: A detection system and method may be used to detect data transmitted in a signal with data pattern dependent signal distortion such as intersymbol interference. In general, a detection system and method compares samples of a received signal with stored samples of distorted signals associated with known data patterns and selects the known data patterns that correspond most closely with the samples of the received signal. The detection system and method may thus mitigate the effects of data pattern dependent signal distortion.

Abstract translation: 可以使用检测系统和方法来检测在具有数据模式相关信号失真的信号中发送的数据，例如符号间干扰。 通常，检测系统和方法将接收信号的样本与已知数据模式相关联的失真信号的存储样本进行比较，并且选择与接收信号的采样最紧密对应的已知数据模式。 因此，检测系统和方法可以减轻数据模式相关信号失真的影响。

公开(公告)号：US20110318019A1

公开(公告)日：2011-12-29

申请号：US12825585

申请日：2010-06-29

Applicant: Morten Nissov ,  Alexei Pilipetskii ,  Neal Bergano

Inventor： Morten Nissov ,  Alexei Pilipetskii ,  Neal Bergano

IPC: H04B10/00

CPC classification number: H04B10/697 ,  H04B10/2513 ,  H04B2210/252 ,  H04B2210/254

Abstract: The present disclosure is directed to managing dispersion compensation in optical transmission line utilizing single mode fiber with no in-line dispersion compensation. A communication system terminal includes one or more dispersion compensation modules configured to compensate for at least a portion of optical dispersion associated with optical data signals supplied from the transmission line. A receiver communicatively coupled to the transmission line includes a digital signal processor configured to compensate for an additional portion of dispersion associated with the optical data signals converted to electrical signals by the receiver.

Abstract translation: 本公开涉及利用不具有在线色散补偿的单模光纤来管理光传输线中的色散补偿。 通信系统终端包括被配置为补偿与从传输线提供的光数据信号相关联的至少一部分光学色散的一个或多个色散补偿模块。 通信地耦合到传输线的接收机包括数字信号处理器，其被配置为补偿与由接收机转换成电信号的光学数据信号相关联的色散的附加部分。

公开(公告)号：US07398454B2

公开(公告)日：2008-07-08

申请号：US11018056

申请日：2004-12-21

Applicant: Yi Cai ,  Jin-Xing Cai ,  Morten Nissov

Inventor： Yi Cai ,  Jin-Xing Cai ,  Morten Nissov

IPC: H03M13/00

CPC classification number: H04L25/067 ,  H03M13/2957 ,  H03M13/3723 ,  H04B10/60 ,  H04L1/0045 ,  H04L27/2331

Abstract: A system and method for soft decision forward error correction (FEC) decoding may be used to determine a possible error in a differential detection signal, for example, in a DPSK system. The system and method uses the constructive and destructive signals from a demodulator to provide an error locating signal. Using the error locating signal, the system and method converts the differential detection signal into a soft decision signal including multi-level soft values.

Abstract translation: 用于软判决前向纠错（FEC）解码的系统和方法可以用于例如在DPSK系统中确定差分检测信​​号中的可能误差。 该系统和方法使用来自解调器的建设性和破坏性的信号来提供错误定位信号。 使用误差定位信号，系统和方法将差分检测信​​号转换为包括多级软值的软判决信号。