公开(公告)号：US20180183542A1

公开(公告)日：2018-06-28

申请号：US15739805

申请日：2015-06-29

Applicant: Mitsubishi Electric Corporation

Inventor： Tsuyoshi YOSHIDA ,  Hayato SANO ,  Masashi BINKAI

IPC: H04J14/06 ,  H04J14/00 ,  H04B10/50 ,  H04B10/532 ,  H04B10/61

CPC classification number: H04J14/06 ,  H04B10/5053 ,  H04B10/516 ,  H04B10/532 ,  H04B10/616 ,  H04J14/002

Abstract: An optical transmission device includes a data duplicating unit that duplicates signals of each of the lanes subjected to symbol mapping and sets the number of the lanes to the number of lanes of a first number; a waveform converting unit that waveform-converts a signal that can take a value of a type of a second number into a signal that can take a value of a type of a third number larger than the second number; a polarity inverting unit that inverts polarity; a lane replacing unit that performs replacement of lanes in two or more lanes; and an optical-signal generating unit that converts electric signals of the signals of each of the lanes input from the lane replacing unit into optical signals and combines and outputs the optical signals of the lanes.

公开(公告)号：US20140233964A1

公开(公告)日：2014-08-21

申请号：US14343725

申请日：2012-09-13

Applicant: Hung-Chang Chien ,  Jianjun Yu ,  Ze Dong

Inventor： Hung-Chang Chien ,  Jianjun Yu ,  Ze Dong

IPC: H04B10/516 ,  H04B10/524

CPC classification number: H04B10/5162 ,  H04B10/508 ,  H04B10/524 ,  H04J14/002 ,  H04J14/06

Abstract: An optical transmitter comprises: first and second sets of optical in-phase and quadrature modulators; an integrable tunable laser assembly; a first polarization beam splitter that is configured to divide the continuous-waveform optical signal into a x-polarized tributary and a y-polarized tributary, each of the x-polarized tributary and the y-polarized tributary is modulated by one of the first and second sets of optical in-phase and quadrature modulators in accordance with the two respective input signals; a second polarization beam splitter that is configured to combine the modulated x-polarized tributary and the modulated y-polarized tributary into one optical signal; and an optical modulator that is configured to modulate the combined optical signal using a driving voltage, wherein the driving voltage has a bias point that is reduced by a predefined offset from a predefined reference voltage level.

Abstract translation: 光发射机包括：第一和第二组光同步和正交调制器; 可集成可调激光器组件; 第一偏振分束器，被配置为将连续波形光信号划分成x偏振支路和y偏振支路，x偏振支路和y偏振支路中的每一个由第一和/ 根据两个相应的输入信号的第二组光同步和正交调制器; 第二偏振分束器，被配置为将调制的x偏振支路和调制的y偏振支路组合成一个光信号; 以及光学调制器，其被配置为使用驱动电压来调制所述组合的光信号，其中所述驱动电压具有被减小预定义的偏离预定参考电压电平的偏置点。

公开(公告)号：US08625984B2

公开(公告)日：2014-01-07

申请号：US13229088

申请日：2011-09-09

Applicant: Yoshinobu Matsukawa ,  Yuya Ishida

Inventor： Yoshinobu Matsukawa ,  Yuya Ishida

IPC: H04B10/08

CPC classification number: H04B10/61 ,  H04B10/0793 ,  H04B10/611 ,  H04J14/002 ,  H04J14/0212

Abstract: A transmission device includes a transponder including an oscillator configured to oscillate a local optical laser, a wavelength controller configured to control an oscillation wavelength of the local optical laser to receive desired input signal light, and a coherent receiver configured to combine and detect the local optical laser and input signal light. A controller is configured to control the oscillation wavelength using a wavelength of the input signal light detected by the coherent receiver, to determine an erroneous connection of a signal line related to the input signal light, when the wavelength of the input signal light is not an expected wavelength.

Abstract translation: 发送装置包括：应答器，包括配置成振荡本地光学激光器的振荡器;波长控制器，被配置为控制本地光学激光器的振荡波长以接收期望的输入信号光;以及相干接收器，被配置为组合和检测局部光学 激光和输入信号灯。 控制器被配置为使用由相干接收器检测的输入信号光的波长来控制振荡波长，以确定输入信号光的波长不是一个时，与输入信号光相关的信号线的错误连接 预期波长。

公开(公告)号：US08538279B2

公开(公告)日：2013-09-17

申请号：US13179300

申请日：2011-07-08

Applicant: Chuandong Li ,  Zhuhong Zhang ,  Fei Zhu ,  Yu Sheng Bai

Inventor： Chuandong Li ,  Zhuhong Zhang ,  Fei Zhu ,  Yu Sheng Bai

IPC: H04B10/00 ,  H04B10/06 ,  H04B10/66

CPC classification number: H04B10/66 ,  H04B10/50 ,  H04B10/61 ,  H04B10/611 ,  H04B10/6164 ,  H04B10/69 ,  H04J14/002 ,  H04J14/06 ,  H04L27/0014

Abstract: An apparatus comprising a nonlinear lookup unit (NL-LUU) configured to add a phase shift to a signal sample to compensate for pattern dependent phase distortion, and one or more first phase adjustment units coupled to NL-LUU and configured to remove from the signal sample a nonlinear phase error from the NL-LUU, wherein the signal sample corresponds to a received signal polarization component of a polarization multiplexed (PM) coherent signal in a PM coherent optical system.

Abstract translation: 一种包括非线性查找单元（NL-LUU）的设备，其被配置为将相移添加到信号样本以补偿基于模式的相位失真，以及耦合到NL-LUU并被配置为从信号中去除的一个或多个第一相位调整单元 从NL-LUU采样非线性相位误差，其中信号样本对应于PM相干光学系统中偏振复用（PM）相干信号的接收信号偏振分量。

公开(公告)号：US08447191B2

公开(公告)日：2013-05-21

申请号：US12728854

申请日：2010-03-22

Applicant: Guifang Li ,  Eduardo Mateo ,  Fatih Yaman

Inventor： Guifang Li ,  Eduardo Mateo ,  Fatih Yaman

IPC: H04B10/06

CPC classification number: H04B10/2507 ,  H04J14/002

Abstract: Systems and method of compensating for transmission impairment are disclosed. One such method comprises receiving a wavelength-division multiplexed optical signal. The received optical signal has been distorted in the physical domain by an optical transmission channel. The method further comprises propagating the distorted optical signal backward in the electronic domain in a corresponding virtual optical transmission channel. The backward propagation fully compensates for fiber dispersion, self-phase modulation, and cross-phase modulation (XPM) and partially compensates for four-wave mixing (FWM).

Abstract translation: 公开了补偿传动损伤的系统和方法。 一种这样的方法包括接收波分复用光信号。 所接收的光信号在物理域中已被光传输通道失真。 该方法还包括在对应的虚拟光传输信道中的电子域中向后传播失真的光信号。 反向传播完全补偿光纤色散，自相位调制和交叉相位调制（XPM），并部分补偿四波混频（FWM）。

公开(公告)号：US20120070149A1

公开(公告)日：2012-03-22

申请号：US13231328

申请日：2011-09-13

Applicant: Hwan Seok CHUNG ,  Sun Hyok Chang

Inventor： Hwan Seok CHUNG ,  Sun Hyok Chang

IPC: H04J14/06

CPC classification number: H04J14/002 ,  H04B10/614 ,  H04B10/616

Abstract: Provided is a coherent optical receiving apparatus and an optical signal processing method. The coherent optical receiving apparatus may include an optical hybrid unit to generate an optical signal by combining a first optical signal inputted from an optical transmitting apparatus and a second optical signal inputted from a local oscillator, a polarization demuxer to demultiplex the optical signal outputted from the optical hybridizing unit, a frequency offset compensator to estimate a frequency offset of at least one of even-numbered samples and odd-numbered samples, and to compensate for a frequency offset of the even-numbered samples and a frequency offset of the odd-numbered samples using the at least one estimated frequency offset, and a carver distortion compensator to compensate for phase distortions of the samples for which the compensation for the frequency offset is performed, the phase distortions being generated by the optical transmitting apparatus.

Abstract translation: 提供了一种相干光接收装置和光信号处理方法。 相干光接收装置可以包括：光混合单元，用于通过组合从光发射装置输入的第一光信号和从本机振荡器输入的第二光信号来产生光信号;偏振解复用器，用于对从 光学杂交单元，用于估计偶数样本和奇数样本中的至少一个的频率偏移的频率偏移补偿器，并且补偿偶数样本的频率偏移和奇数编号的频率偏移 使用所述至少一个估计频率偏移的采样，以及用于补偿执行对所述频率偏移的补偿的样本的相位失真的雕刻失真补偿器，所述相位失真由所述光发送装置产生。

公开(公告)号：US20110085624A1

公开(公告)日：2011-04-14

申请号：US12860659

申请日：2010-08-20

Applicant: Ivan B. Djordjevic ,  Lei Xu ,  Ting Wang

Inventor： Ivan B. Djordjevic ,  Lei Xu ,  Ting Wang

IPC: H04L27/06

CPC classification number: H04L25/03171 ,  H04B10/532 ,  H04B10/6971 ,  H04J14/002 ,  H04J14/06 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0071 ,  H04L27/3405

Abstract: Systems and methods for optical communication that use a transmitter/receiver. The systems and methods include receiving a modulated, encoded input stream. Channel memory is reduced using coarse digital backpropagation and other channel impairments are removed using turbo equalization. Symbols are detected in the input stream that conform to a non-uniform, polar constellation having a Gaussian source distribution to produce a stream of encoded data. The stream of encoded data is decoded with one or more low density parity check (LDPC) decoders.

Abstract translation: 使用发射机/接收机的光通信系统和方法。 系统和方法包括接收经调制的编码的输入流。 使用粗数字反向传播减少信道存储，并且使用turbo均衡消除其他信道损伤。 在符合具有高斯源分布的非均匀极坐标的输入流中检测符号以产生编码数据流。 编码数据流用一个或多个低密度奇偶校验（LDPC）解码器解码。

公开(公告)号：US20100329670A1

公开(公告)日：2010-12-30

申请号：US12492391

申请日：2009-06-26

Applicant: Rene-Jean Essiambre ,  Roland Ryf ,  Peter J. Winzer

Inventor： Rene-Jean Essiambre ,  Roland Ryf ,  Peter J. Winzer

IPC: H04J14/00 ,  H04B10/06

CPC classification number: H04J14/04 ,  G02B6/2817 ,  G02B6/34 ,  H04B10/2581 ,  H04B10/60 ,  H04B10/611 ,  H04B10/613 ,  H04B10/614 ,  H04J14/002 ,  H04J14/021 ,  H04J14/06

Abstract: A representative optical receiver of the invention receives an optical transverse-mode-multiplexed (TMM) signal through a multimode fiber that supports a plurality of transverse modes. The optical receiver has a plurality of optical detectors operatively coupled to a digital signal processor configured to process the TMM signal to determine its modal composition. Based on the determined modal composition, the optical receiver demodulates each of the independently modulated components of the TMM signal to recover the data encoded onto the TMM signal at the remote transmitter.

Abstract translation: 本发明的代表性光接收机通过支持多个横向模式的多模光纤接收光学横向模复用（TMM）信号。 光接收器具有多个光学检测器，其可操作地耦合到数字信号处理器，该数字信号处理器被配置为处理TMM信号以确定其模态组成。 基于确定的模态组合，光接收机解调TMM信号中的每个独立调制分量，以恢复在远程发射机处编码到TMM信号上的数据。

公开(公告)号：US20100196009A1

公开(公告)日：2010-08-05

申请号：US12607125

申请日：2009-10-28

Applicant: Dayou Qian ,  Ting Wang ,  Kai Yang ,  Junqiang Hu

Inventor： Dayou Qian ,  Ting Wang ,  Kai Yang ,  Junqiang Hu

IPC: H04J14/06

CPC classification number: H04J14/002 ,  H04B10/2513 ,  H04B10/60 ,  H04B10/6161 ,  H04B10/6162 ,  H04J14/06

Abstract: A method for the polarization independent frequency domain equalization (FDE) chromatic dispersion compensation on polarization multiplexing (POLMUX) coherent systems. Operationally, time domain signals are converted to frequency domain signals such that time domain convolution can be done as simple multiplications in the frequency domain. These frequency domain signals then converted back to time domain for subsequent use. The input signal size and FFT size are advantageously designed so that the output signals can be continuous with some overlap between two successive frames.

Abstract translation: 一种用于偏振复用（POLMUX）相干系统上的偏振独立频域均衡（FDE）色散补偿的方法。 在操作上，时域信号被转换成频域信号，使得时域卷积可以作为频域中的简单乘法来完成。 然后，这些频域信号被转换回到时域以供后续使用。 有利地设计输入信号尺寸和FFT尺寸，使得输出信号可以是连续的，在两个连续帧之间具有一些重叠。

公开(公告)号：US20090214210A1

公开(公告)日：2009-08-27

申请号：US12183381

申请日：2008-07-31

Applicant: Jianjun Yu ,  Ting Wang

Inventor： Jianjun Yu ,  Ting Wang

IPC: H04J14/06

CPC classification number: H04J14/06 ,  H04B10/5165 ,  H04B10/532 ,  H04B10/548 ,  H04J14/002 ,  H04L5/0014 ,  H04L27/2627 ,  H04L27/2697

Abstract: A method includes modulating lightwaves to provide first and second OFDM signal sidebands at a first polarization direction and first and second OFDM signal sidebands at a second polarization direction, and combining sidebands that are oppositely positioned and joined from the first and second OFDM signal sidebands at each polarization direction to provide a polarization multiplexing OFDM signal.

Abstract translation: 一种方法包括调制光波以在第一偏振方向提供第一和第二OFDM信号边带，以及在第二极化方向上提供第一和第二OFDM信号边带，并且组合在每一个处与第一和第二OFDM信号边带相对地定位和连接的边带 偏振方向，以提供偏振复用OFDM信号。