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1.发明申请COMMUNICATION THROUGH PRE-DISPERSION-COMPENSATED PHASE-CONJUGATED OPTICAL VARIANTS 有权通过预分散补偿的相位光学变量进行通信公开(公告)号：US20130071119A1
公开(公告)日：2013-03-21
申请号：US13601236
申请日：2012-08-31
CPC分类号： H04B10/516 , H04B10/25137
摘要： An apparatus comprises an optical transmitter that comprises a processor and at least one optical modulator. The processor is configured to generate electronic representations of at least two pre-dispersion-compensated phase-conjugated optical variants carrying a same modulated payload data for transmission. The at least one optical modulator is configured to modulate the electronic representations, wherein an amount of dispersion induced on the pre-dispersion-compensated phase-conjugated optical variants depends on an accumulated dispersion (AD) of a transmission link through which the pre-dispersion-compensated phase-conjugated optical variants are to be transmitted. The amount of dispersion induced on the phase-conjugated optical variants may be approximately −AD/2, where AD is the accumulated dispersion of the transmission link. The pre-dispersion-compensated phase-conjugated optical variants are different from one another in one or more dimensions such as the polarization of light, the time of transmission, the spatial localization, the optical carrier wavelength, or the subcarrier frequency during transmission.
摘要翻译： 一种装置包括光发射机，其包括处理器和至少一个光调制器。 处理器被配置为生成携带相同调制有效载荷数据以进行传输的至少两个预色散补偿相位共轭光学变型的电子表示。 所述至少一个光调制器被配置为调制电子表示，其中在预色散补偿的相位共轭光学变体上感应的色散量取决于传输链路的累积色散（AD），通过该传播链路的预分散 补偿的相位共轭光学变体将被传输。 在相位共轭光学变体上引起的色散量可以近似为-AD / 2，其中AD是传输链路的累积色散。 预色散补偿相位共轭光学变体在一个或多个维度上彼此不同，例如光的偏振，透射时间，空间定位，光载波波长或透射期间的副载波频率。
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2.发明授权Communication through pre-dispersion-compensated phase-conjugated optical variants 有权通过预色散补偿相位共轭光学变体进行通信公开(公告)号：US08934786B2
公开(公告)日：2015-01-13
申请号：US13601236
申请日：2012-08-31
IPC分类号： H04B10/04 , H04B10/516 , H04B10/2513
CPC分类号： H04B10/516 , H04B10/25137
摘要： An apparatus comprises an optical transmitter that comprises a processor and at least one optical modulator. The processor is configured to generate electronic representations of at least two pre-dispersion-compensated phase-conjugated optical variants carrying a same modulated payload data for transmission. The at least one optical modulator is configured to modulate the electronic representations, wherein an amount of dispersion induced on the pre-dispersion-compensated phase-conjugated optical variants depends on an accumulated dispersion (AD) of a transmission link through which the pre-dispersion-compensated phase-conjugated optical variants are to be transmitted. The amount of dispersion induced on the phase-conjugated optical variants may be approximately −AD/2, where AD is the accumulated dispersion of the transmission link. The pre-dispersion-compensated phase-conjugated optical variants are different from one another in one or more dimensions such as the polarization of light, the time of transmission, the spatial localization, the optical carrier wavelength, or the subcarrier frequency during transmission.
摘要翻译： 一种装置包括光发射机，其包括处理器和至少一个光调制器。 处理器被配置为生成携带相同调制有效载荷数据以进行传输的至少两个预色散补偿相位共轭光学变型的电子表示。 所述至少一个光调制器被配置为调制电子表示，其中在预色散补偿的相位共轭光学变体上感应的色散量取决于传输链路的累积色散（AD），通过该传播链路的预分散 补偿的相位共轭光学变体将被传输。 在相位共轭光学变体上引起的色散量可以近似为-AD / 2，其中AD是传输链路的累积色散。 预色散补偿相位共轭光学变体在一个或多个维度上彼此不同，例如光的偏振，透射时间，空间定位，光载波波长或透射期间的副载波频率。
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公开(公告)号：US20130070786A1
公开(公告)日：2013-03-21
申请号：US13411462
申请日：2012-03-02
CPC分类号： C02F1/78 , H04B10/00 , H04B10/516 , H04B10/61 , Y02W10/37
摘要： An optical transport system configured to transmit at least two phase-conjugated optical variants carrying the same modulated symbols, with the phase-conjugated optical variants in being different from one another in one or more of polarization of light, the time of transmission, spatial localization, optical carrier wavelength, and subcarrier frequency during transmission. The two phase-conjugated optical variants can be generated by a single polarization-diversity transmitter to be orthogonally polarized, and propagate through an optical transmission link with the same wavelength and spatial path. The optical variants are detected and processed at the receiver in a manner that enables coherent summation of the corresponding electrical signals prior to constellation de-mapping. The coherent summation tends to cancel out the deleterious effects of nonlinear distortions imparted on the individual phase-conjugated optical variants in an optical fiber transmission link because said nonlinear distortions tend to be opposite to each other.
摘要翻译： 一种光传送系统，被配置为传送携带相同调制符号的至少两个相位共轭光学变体，相位共轭光学变体在光的偏振中的一个或多个中的彼此不同，传输时间，空间定位 ，光载波波长，以及传输期间的副载波频率。 两个相位共轭的光学变型可以由单个偏振分集发射器产生，以被正交极化，并且通过具有相同波长和空间路径的光传输链路传播。 在接收机处以这样的方式检测和处理光学变体，使得能够在星座解映射之前对相应的电信号进行相干相加。 相干相加倾向于抵消由于所述非线性失真倾向于彼此相反而在光纤传输链路中赋予单个相位共轭光学变型的非线性失真的有害影响。
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4.发明申请OPTICAL TRANSPORT MULTIPLEXING CLIENT TRAFFIC ONTO PARALLEL LINE SYSTEM PATHS 审中-公开光纤传输多路复用客户端交流并行线路系统公开(公告)号：US20120189303A1
公开(公告)日：2012-07-26
申请号：US13012613
申请日：2011-01-24
IPC分类号： H04J14/00
CPC分类号： H04J14/02 , H04J14/0227 , H04J14/0279 , H04J14/04 , H04J14/06 , H04L1/22 , H04L5/0005 , H04L27/0008
摘要： An optical line card system includes one or more input interfaces for receiving information, a line interface comprising a plurality of line transponders, and a multiplexer for multiplexing output of the one or more input interfaces onto the plurality of line transponders. The one or more input interfaces have an aggregate information rate RC. The plurality of line transponders have an aggregate information rate RL that is less than or approximately equal to the aggregate information rate RC of the one or more of client interfaces. Each of the line transponders employs a modulation format with a spectral efficiency that enables transmission with at most one opto-electronic regeneration point per link to an end point for electronic routing or switching. Each of the plurality of line transponders is configured to insert output on a respective one of a plurality of orthogonally parallel transmission paths.
摘要翻译： 光线卡系统包括用于接收信息的一个或多个输入接口，包括多个线路转发器的线路接口，以及用于将所述一个或多个输入接口的输出复用到所述多个线路转发器上的多路复用器。 一个或多个输入接口具有聚合信息速率RC。 多个线路转发器具有小于或近似等于一个或多个客户端接口的聚合信息速率RC的聚合信息速率RL。 每个线路转发器采用具有频谱效率的调制格式，其能够在每个链路至多一个光电再生点到达用于电子路由或切换的终点的传输。 多个线路转发器中的每一个被配置为将输出插入到多个正交并行传输路径中的相应一个上。
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公开(公告)号：US08879922B2
公开(公告)日：2014-11-04
申请号：US13270804
申请日：2011-10-11
IPC分类号： H04B10/00 , H04B10/61 , H04B10/112 , H04B10/548
CPC分类号： H04B10/112 , H04B10/548 , H04B10/613 , H04B10/614 , H04B10/616
摘要： An apparatus receives data encoded in a format where information bits for transmission are mapped into symbols each carrying a plurality of bits, some of which are encoded through a frequency-shift keyed (FSK) format and the rest of which are encoded through an additional modulation format on at least one FSK carrier. The receiver detects the signal through a dual-polarization coherent receiver front-end, and recovers polarization components of the signal by decoding a first non-zero portion of a plurality of bits carried by a symbol based on frequency slot position of at least one FSK carrier in the polarization components and a second non-zero portion of the plurality of bits carried by the symbol based on the additional modulation carried by at least one FSK carrier in the polarization components. Pilot-assisted orthogonal frequency-division de-multiplexing (PA-OFDM) may be used for spectrally-efficient signal reception, even in the presence of severe FSK errors.
摘要翻译： 一种装置接收以格式传输的数据，其中用于传输的信息比特被映射到每个携带多个比特的符号，其中一些是通过频移键控（FSK）格式编码的，其余的是通过附加调制 在至少一个FSK载体上格式化。 接收机通过双偏振相干接收机前端检测信号，并且通过基于至少一个FSK的频率位置解码由符号携带的多个比特的第一非零部分来恢复信号的偏振分量 基于由偏振分量中的至少一个FSK载波承载的附加调制，所述偏振分量中的载波和所述符号承载的所述多个比特的第二非零部分。 即使存在严重的FSK误差，导频辅助正交频分复用（PA-OFDM）也可用于频谱效率信号接收。
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公开(公告)号：US20130089339A1
公开(公告)日：2013-04-11
申请号：US13270804
申请日：2011-10-11
IPC分类号： H04B10/02
CPC分类号： H04B10/112 , H04B10/548 , H04B10/613 , H04B10/614 , H04B10/616
摘要： An apparatus receives data encoded in a format where information bits for transmission are mapped into symbols each carrying a plurality of bits, some of which are encoded through a frequency-shift keyed (FSK) format and the rest of which are encoded through an additional modulation format on at least one FSK carrier. The receiver detects the signal through a dual-polarization coherent receiver front-end, and recovers polarization components of the signal by decoding a first non-zero portion of a plurality of bits carried by a symbol based on frequency slot position of at least one FSK carrier in the polarization components and a second non-zero portion of the plurality of bits carried by the symbol based on the additional modulation carried by at least one FSK carrier in the polarization components. Pilot-assisted orthogonal frequency-division de-multiplexing (PA-OFDM) may be used for spectrally-efficient signal reception, even in the presence of severe FSK errors.
摘要翻译： 一种装置接收以格式传输的数据，其中用于传输的信息比特被映射到每个携带多个比特的符号中，其中一些是通过频移键控（FSK）格式编码的，其余的是通过附加调制 在至少一个FSK载体上格式化。 接收机通过双偏振相干接收机前端检测信号，并且通过基于至少一个FSK的频率位置解码由符号携带的多个比特的第一非零部分来恢复信号的偏振分量 基于由偏振分量中的至少一个FSK载波承载的附加调制，所述偏振分量中的载波和所述符号承载的所述多个比特的第二非零部分。 即使存在严重的FSK误差，导频辅助正交频分复用（PA-OFDM）也可用于频谱效率信号接收。
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7.发明申请公开(公告)号：US20110170873A1
公开(公告)日：2011-07-14
申请号：US12685470
申请日：2010-01-11
CPC分类号： H04B10/506 , H01S3/0085 , H01S3/2383 , H04J14/02
摘要： Frequency-locked optical comb sources are provided that utilize recirculating frequency shifting based on frequency conversion in a modulator, together with a filter. The filter may be a wavelength notch filter and include a plurality of notches. An example apparatus includes a coupler, an I/Q modulator, and a filter. A first input of the coupler receives a first input optical carrier having a first frequency, and a second input of the coupler re receives a set of frequency-shifted carriers from the filter. The input optical carrier may have a plurality of frequencies. The I/Q modulator shifts the frequency of a first output of the coupler. The filter filters modulated output from the I/Q modulator thereby limiting the frequency-shifted carriers to be within an optical bandwidth. A second output of the coupler provides a plurality of frequency-locked carriers containing the first input optical carrier and the set of frequency-shifted carriers.
摘要翻译： 提供了频率锁定的光梳源，其与滤波器一起利用基于调制器中的频率转换的再循环频移。 滤波器可以是波长陷波滤波器并且包括多个凹口。 示例性装置包括耦合器，I / Q调制器和滤波器。 耦合器的第一输入端接收具有第一频率的第一输入光载波，并且耦合器的第二输入端从滤波器接收一组频移载波。 输入光载波可以具有多个频率。 I / Q调制器移动耦合器的第一输出的频率。 滤波器对来自I / Q调制器的调制输出进行滤波，从而将频移载波限制在光带宽内。 耦合器的第二输出提供包含第一输入光载波和该组频移载波的多个锁频载波。
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8.发明授权公开(公告)号：US08483575B2
公开(公告)日：2013-07-09
申请号：US12685470
申请日：2010-01-11
IPC分类号： H04B10/04
CPC分类号： H04B10/506 , H01S3/0085 , H01S3/2383 , H04J14/02
摘要： Frequency-locked optical comb sources are provided that utilize recirculating frequency shifting based on frequency conversion in a modulator, together with a filter. The filter may be a wavelength notch filter and include a plurality of notches. An example apparatus includes a coupler, an I/Q modulator, and a filter. A first input of the coupler receives a first input optical carrier having a first frequency, and a second input of the coupler re receives a set of frequency-shifted carriers from the filter. The input optical carrier may have a plurality of frequencies. The I/Q modulator shifts the frequency of a first output of the coupler. The filter filters modulated output from the I/Q modulator thereby limiting the frequency-shifted carriers to be within an optical bandwidth. A second output of the coupler provides a plurality of frequency-locked carriers containing the first input optical carrier and the set of frequency-shifted carriers.
摘要翻译： 提供了频率锁定的光梳源，其与滤波器一起利用基于调制器中的频率转换的再循环频移。 滤波器可以是波长陷波滤波器并且包括多个凹口。 示例性装置包括耦合器，I / Q调制器和滤波器。 耦合器的第一输入端接收具有第一频率的第一输入光载波，并且耦合器的第二输入端从滤波器接收一组频移载波。 输入光载波可以具有多个频率。 I / Q调制器移动耦合器的第一输出的频率。 滤波器对来自I / Q调制器的调制输出进行滤波，从而将频移载波限制在光带宽内。 耦合器的第二输出提供包含第一输入光载波和该组频移载波的多个锁频载波。
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9.发明授权公开(公告)号：US08204377B2
公开(公告)日：2012-06-19
申请号：US12288794
申请日：2008-10-23
申请人： Xiang Liu , Robert William Tkach
发明人： Xiang Liu , Robert William Tkach
CPC分类号： H04J14/06 , H04B10/255
摘要： System, apparatus and method of optical communication are provided for performing digital compensation of the self-phase modulation (SPM) effect experienced by a polarization-division multiplexed (PDM) orthogonal frequency-division multiplexed (OFDM) signal in fiber transmission by compensating a complex digital waveform representing one orthogonal polarization component of the optical PDM-OFDM signal based on both digital waveforms representing two orthogonal polarization components of the PDM-OFDM signal. The compensation of the digital waveform may be further based on an anticipated mean total nonlinear phase shift experienced by the signal during fiber transmission due to SPM. The compensation may be divided into pre-compensation at the PDM-OFDM transmitter and post-compensation at the PDM-OFDM receiver. The fiber transmission link preferably includes a pre-dispersion compensation module, distributed inline dispersion compensation modules, and a post-dispersion compensation module arranged in a judiciously chosen manner.
摘要翻译： 提供光通信的系统，装置和方法，用于对光纤传输中的偏振分复用（PDM）正交频分复用（OFDM）信号所经历的自相位调制（SPM）效应进行数字补偿， 基于表示PDM-OFDM信号的两个正交偏振分量的两个数字波形，表示光学PDM-OFDM信号的一个正交偏振分量的数字波形。 数字波形的补偿可以进一步基于由于SPM而在光纤传输期间由信号所经历的预期平均总非线性相移。 该补偿可以分为PDM-OFDM发射机的预补偿和PDM-OFDM接收机的后补偿。 纤维传输链路优选地包括预分散补偿模块，分布式在线色散补偿模块和以明智选择的方式布置的后分散补偿模块。
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公开(公告)号：US20110069975A1
公开(公告)日：2011-03-24
申请号：US12565600
申请日：2009-09-23
CPC分类号： H04B10/675 , H04B10/61 , H04B10/614 , H04B10/6161 , H04B10/6165
摘要： Embodiments for optical communication are provided in which subbands of a multi-carrier optical signal are digital coherent detected and then processed to recover data carried by the modulated carriers corresponding to at least one of the subbands. An exemplary optical communication system includes a multi-carrier coherent optical receiver for receiving a multi-carrier optical signal having M modulated carriers that are frequency locked, wherein M is greater than 2. The multi-carrier coherent optical receiver includes a subband digital coherent detector configured to provide output signals in a digital form for N different subbands of the multi-carrier optical signal, where N is an integer greater than 1 and less than M; and a digital signal processor configured to process the digital form of the detected output signals in order to recover the data carried by the modulated carriers corresponding to at least one of the subbands of the multicarrier optical signal.
摘要翻译： 提供了用于光通信的实施例，其中多载波光信号的子带被数字相干检测，然后被处理以恢复由至少一个子带对应的调制载波承载的数据。 示例性光通信系统包括多载波相干光接收机，用于接收具有频率锁定的M个调制载波的多载波光信号，其中M大于2.多载波相干光接收机包括子带数字相干检测器 被配置为为多载波光信号的N个不同子带提供数字形式的输出信号，其中N是大于1且小于M的整数; 以及数字信号处理器，被配置为处理检测到的输出信号的数字形式，以便恢复与多载波光信号的至少一个子带对应的调制载波承载的数据。
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