公开(公告)号：US08732561B2

公开(公告)日：2014-05-20

申请号：US11937706

申请日：2007-11-09

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。

公开(公告)号：US20100196016A1

公开(公告)日：2010-08-05

申请号：US12364171

申请日：2009-02-02

Applicant: Hongbin Zhang ,  Jin-Xing Cai

Inventor： Hongbin Zhang ,  Jin-Xing Cai

IPC: H04B10/00

CPC classification number: H04B10/5053 ,  H04B10/50577 ,  H04B10/5561 ,  H04B10/677 ,  H04J14/06

Abstract: Polarization multiplexing with different differential phase shift keying (DPSK) schemes generally uses DPSK modulated signals modulated using different DPSK modulation schemes and combined with orthogonal polarizations relative to each other. The different DPSK modulation schemes may use different DPSK phase shifts to represent data, such as a regular DPSK modulation scheme and a π/2 DPSK modulation scheme. By using different DPSK modulation schemes to represent data on the orthogonally polarized signals, the DPSK demodulators may effectively separate the orthogonally polarized signals using the property of the DPSK receivers. To optimize performance, the DPSK modulated signals may also be bit-interleaved when combined with orthogonal polarization.

Abstract translation: 使用不同差分相移键控（DPSK）方案的偏振复用通常使用使用不同DPSK调制方案调制的DPSK调制信号并相对于彼此结合正交偏振。 不同的DPSK调制方案可以使用不同的DPSK相移来表示诸如常规DPSK调制方案和＆amp; R / DPSK调制方案的数据。 通过使用不同的DPSK调制方案来表示正交极化信号上的数据，DPSK解调器可以使用DPSK接收机的性质来有效地分离正交偏振信号。 为了优化性能，当与正交极化组合时，DPSK调制信号也可以被比特交织。

公开(公告)号：US07616894B2

公开(公告)日：2009-11-10

申请号：US11024235

申请日：2004-12-28

Applicant: Georg Heinrich Mohs ,  Jin-Xing Cai ,  Morten Nissov

Inventor： Georg Heinrich Mohs ,  Jin-Xing Cai ,  Morten Nissov

IPC: H04J14/00 ,  H04J14/02

CPC classification number: H04B10/2507 ,  H04B10/66 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/0279

Abstract: A system and method for mitigating dispersion slope is capable of reducing the performance impact on an optical communication system caused by dispersion slope. The system and method receives an optical signal, demultiplexes the optical signal and optically filters the demultiplexed optical signals. The optical filters may have a bandwidth that is wide with respect to the demultiplexed optical signals and narrow with respect to the original optical signal.

Abstract translation: 用于减轻色散斜率的系统和方法能够降低由色散斜率引起的对光通信系统的性能影响。 该系统和方法接收光信号，对光信号进行解复用并对已解复用的光信号进行光学滤波。 滤光器可以具有相对于解复用的光信号宽的带宽，并且相对于原始光信号窄。

公开(公告)号：US07295728B2

公开(公告)日：2007-11-13

申请号：US11363511

申请日：2006-02-27

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：US20070206960A1

公开(公告)日：2007-09-06

申请号：US11682511

申请日：2007-03-06

Applicant: Morten Nissov ,  Alexei N. Pilipetskii ,  Jin-Xing Cai ,  Neal S. Bergano

Inventor： Morten Nissov ,  Alexei N. Pilipetskii ,  Jin-Xing Cai ,  Neal S. Bergano

IPC: H04B10/04

CPC classification number: H04B10/5161 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5561

Abstract: An apparatus, system and method wherein a multi-level data modulation format, such as DQPSK, is combined with symbol rate synchronous amplitude, phase, and/or polarization modulation.

Abstract translation: 其中诸如DQPSK的多电平数据调制格式与符号速率同步幅度，相位和/或偏振调制组合的装置，系统和方法。

公开(公告)号：US20070183787A1

公开(公告)日：2007-08-09

申请号：US11734987

申请日：2007-04-13

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

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

IPC: H04B10/12

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：US08805204B2

公开(公告)日：2014-08-12

申请号：US13032982

申请日：2011-02-23

Applicant: Hongbin Zhang ,  Jin-Xing Cai ,  Yu Sun ,  Carl R. Davidson ,  Yi Cai ,  Georg Heinrich Mohs

Inventor： Hongbin Zhang ,  Jin-Xing Cai ,  Yu Sun ,  Carl R. Davidson ,  Yi Cai ,  Georg Heinrich Mohs

IPC: H04B10/04 ,  H04B10/12

CPC classification number: H04J14/02 ,  H04B10/541

Abstract: In general, optical communication systems and methods may generate higher-level nmQAM from nQAM signals using one or more delay line interferometers (DLIs) arranged in various configurations. The nQAM signals may be generated by a lower-level modulator, such as a BPSK modulator, QPSK modulator or lower-level QAM modulator, with binary driving signals. Different parameters of the DLIs, such as free spectral range (FSR), phase shift, and amplitude imbalance, may be selected to accomplish the desired higher-level nmQAM depending upon the nQAM signal.

Abstract translation: 通常，光通信系统和方法可以使用以各种配置布置的一个或多个延迟线干涉仪（DLI）从nQAM信号产生更高级的nmQAM。 nQAM信号可以由具有二进制驱动信号的较低级调制器（例如BPSK调制器，QPSK调制器或低级QAM调制器）产生。 可以选择DLI的不同参数，例如自由光谱范围（FSR），相移和幅度不平衡，以根据nQAM信号来实现期望的更高级别的nmQAM。

公开(公告)号：US08270847B2

公开(公告)日：2012-09-18

申请号：US12364171

申请日：2009-02-02

Applicant: Hongbin Zhang ,  Jin-Xing Cai

Inventor： Hongbin Zhang ,  Jin-Xing Cai

IPC: H04B10/04

CPC classification number: H04B10/5053 ,  H04B10/50577 ,  H04B10/5561 ,  H04B10/677 ,  H04J14/06

Abstract: Polarization multiplexing with different differential phase shift keying (DPSK) schemes generally uses DPSK modulated signals modulated using different DPSK modulation schemes and combined with orthogonal polarizations relative to each other. The different DPSK modulation schemes may use different DPSK phase shifts to represent data, such as a regular DPSK modulation scheme and a π/2 DPSK modulation scheme. By using different DPSK modulation schemes to represent data on the orthogonally polarized signals, the DPSK demodulators may effectively separate the orthogonally polarized signals using the property of the DPSK receivers. To optimize performance, the DPSK modulated signals may also be bit-interleaved when combined with orthogonal polarization.

Abstract translation: 使用不同差分相移键控（DPSK）方案的偏振复用通常使用使用不同DPSK调制方案调制的DPSK调制信号并相对于彼此结合正交偏振。 不同的DPSK调制方案可以使用不同的DPSK相移来表示诸如常规DPSK调制方案和＆amp; R / DPSK调制方案的数据。 通过使用不同的DPSK调制方案来表示正交极化信号上的数据，DPSK解调器可以使用DPSK接收机的性质来有效地分离正交偏振信号。 为了优化性能，当与正交极化组合时，DPSK调制信号也可以被比特交织。

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：US06453095B2

公开(公告)日：2002-09-17

申请号：US09827819

申请日：2001-04-06

Applicant: Kai-Ming Feng ,  Jin-Xing Cai ,  Alan E. Willner ,  Victor Grubsky ,  Dmitry Starodubov ,  Jack Feinberg

Inventor： Kai-Ming Feng ,  Jin-Xing Cai ,  Alan E. Willner ,  Victor Grubsky ,  Dmitry Starodubov ,  Jack Feinberg

IPC: G02B634

CPC classification number: G02B6/29322 ,  G02B6/02085 ,  G02B6/02109 ,  G02B6/02138 ,  G02B6/022 ,  G02B6/2932 ,  G02B6/29394 ,  G02B6/29395 ,  G02B6/4215 ,  G02F1/011 ,  G02F1/0115 ,  G02F1/0126 ,  G02F1/0134 ,  G02F2201/307 ,  H01S3/0057 ,  H04B10/2519 ,  H04B2210/258

Abstract: Techniques and devices based on a wave-guiding element which has a spatial grating pattern that is an oscillatory variation along its optic axis. The wave-guiding element is configured to receive an input optical signal and to produce an output optical signal by reflection within a Bragg reflection band produced by the spatial grating pattern so as to produce time delays of different reflected spectral components as a nonlinear function of spatial positions along said optic axis at which the different reflected spectral components are respectively reflected. Such a wave-guiding element may be a nonlinearly chirped fiber grating A control unit may be engaged to the wave-guiding element and is operable to change a property of the spatial grating pattern along the optic axis to tune at least relative time delays of the different reflected spectral components nonlinearly with respect to wavelength.

Abstract translation: 基于波导元件的技术和装置，其具有沿其光轴的振荡变化的空间光栅图案。 波导元件被配置为接收输入光信号并且通过由空间光栅图案产生的布拉格反射带内的反射产生输出光信号，以便产生不同反射光谱分量的时间延迟作为空间的非线性函数 沿着所述光轴的位置分别反射不同的反射光谱分量。 这种波导元件可以是非线性啁啾光纤光栅。控制单元可以接合到波导元件，并且可操作以改变沿着光轴的空间光栅图案的特性，以调谐至少相对于时间延迟 不同的反射光谱分量相对于波长非线性。