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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.发明授权公开(公告)号：US06785446B1
公开(公告)日：2004-08-31
申请号：US10393483
申请日：2003-03-20
申请人： Sethumadhavan Chandrasekhar , Andrew Roman Chraplyvy , Christopher Richard Doerr , Peter J. Winzer
发明人： Sethumadhavan Chandrasekhar , Andrew Roman Chraplyvy , Christopher Richard Doerr , Peter J. Winzer
IPC分类号： G02B626
CPC分类号： H04B10/1149 , G02B6/266 , H04B10/2507 , H04J14/0221
摘要： An improved multi-channel optical equalizer method and apparatus for intersymbol interference mitigation compensates many wavelength channels simultaneously and requires few adjustable parameters. The equalizer unit has only two control signals, one to control signal magnitude and one to control signal phase, yet it can still compensate many wavelength channels simultaneously. The equalizer includes a coupler with a controllable coupling ratio for splitting the light into two portions and a controllable interferometer means having two arms, one arm having an additional delay which is equal to an integer multiple of 1/&Dgr;f, where &Dgr;f is the channel spacing of the multiwavelength system. The controllable interferometer unit also has a controllable delay in a first or second arm for adjusting the relative phase of the light passing therethrough. A coupler combines the two signal portions from the first and second arms to form the equalized output signal.
摘要翻译： 用于符号间干扰减轻的改进的多通道光均衡器方法和装置同时补偿许多波长信道，并且需要很少的可调参数。 均衡器单元只有两个控制信号，一个用于控制信号幅度，一个控制信号相位，但它仍然可以同时补偿许多波长信道。 均衡器包括具有可控耦合比的耦合器，用于将光分成两部分，以及具有两个臂的可控干涉仪装置，一个臂具有等于1 / Deltaf的整数倍的附加延迟，其中Deltaf是沟道间隔 的多波长系统。 可控干涉仪单元还具有用于调节通过其中的光的相对相位的第一或第二臂中的可控延迟。 耦合器组合来自第一和第二臂的两个信号部分以形成均衡的输出信号。
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8.发明授权公开(公告)号：US06804434B1
公开(公告)日：2004-10-12
申请号：US10735176
申请日：2003-12-12
申请人： Sethumadhavan Chandrasekhar , Andrew Roman Chraplyvy , Christopher Richard Doerr , Peter J. Winzer
发明人： Sethumadhavan Chandrasekhar , Andrew Roman Chraplyvy , Christopher Richard Doerr , Peter J. Winzer
IPC分类号： G02B626
CPC分类号： H04B10/1149 , G02B6/266 , H04B10/2507 , H04J14/0221
摘要： A multi-channel optical equalizer for intersymbol interference mitigation compensates for single- or multi- wavelength channels simultaneously and requires few adjustable parameters. The optical equalizer compensates for overshoots and signal transition degradations in semiconductor optical amplifiers. The equalizer unit uses one control signal for magnitude and one to control signal phase. The equalizer includes a controllable coupling ratio coupler for splitting the light into two portions and a controllable interferometer having two arms, one arm having an additional delay which is equal to an integer multiple of 1/&Dgr;f, where &Dgr;f is the channel spacing between adjacent wavelengths utilized in the optical system. The controllable interferometer has a controllable delay in a first or second arm for adjusting the relative phase of the light passing therethrough. A coupler combines the two signal portions from the first and second arms to form the equalized output signal.
摘要翻译： 用于符号间干扰减轻的多通道光学均衡器同时补偿单波长或多波长通道，并且需要很少的可调参数。 光学均衡器补偿半导体光放大器中的过冲和信号转换劣化。 均衡器单元使用一个控制信号的幅度和一个来控制信号相位。 均衡器包括可控耦合比耦合器，用于将光分成两部分，以及具有两个臂的可控干涉仪，一个臂具有等于1 / Deltaf的整数倍的附加延迟，其中Deltaf是相邻波长之间的信道间隔 用于光学系统。 可控干涉仪在第一或第二臂中具有可控制的延迟，用于调节通过其中的光的相对相位。 耦合器组合来自第一和第二臂的两个信号部分以形成均衡的输出信号。
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9.发明申请SYSTEM AND METHOD FOR RECEIVING HIGH SPECTRAL EFFICIENCY OPTICAL DPSK SIGNALS 有权用于接收高光谱效率的光学DPSK信号的系统和方法公开(公告)号：US20100046948A1
公开(公告)日：2010-02-25
申请号：US12194241
申请日：2008-08-19
IPC分类号： H04J14/02
CPC分类号： H04B10/677
摘要： Apparatus and methods are provided for receiving differential phase-shift keyed (DPSK) optical signals subjected to tight optical filtering, such as may be experienced by 40 Gb/s and 100 Gb/s channels in a dense wavelength division multiplexing (DWDM) communications system with 50 GHz channel spacing. An optical DPSK receiver is described which employs an optical delay interferometer (ODI) demodulator having a free spectral range (FSR) that is larger than the symbol rate (SR) of the DPSK signal to be demodulated. The receiver includes means for introducing an additional power imbalance between the outputs of the ODI demodulator, and the additional power imbalance may be related to the ratio of FSR to SR. The additional power imbalance increases the signal tolerance to tight optical filtering, thereby achieving high spectral efficiency in applications such as DWDM.
摘要翻译： 提供了用于接收经受紧密光学滤波的差分相移键控（DPSK）光信号的装置和方法，例如在密集波分复用（DWDM）通信系统中可能经历40Gb / s和100Gb / s信道 具有50GHz信道间隔。 描述了一种光学DPSK接收机，其采用具有大于待解调的DPSK信号的符号速率（SR）的自由频谱范围（FSR）的光学延迟干涉仪（ODI）解调器。 接收机包括用于在ODI解调器的输出之间引入附加功率不平衡的装置，并且附加功率不平衡可以与FSR与SR的比率有关。 额外的功率不平衡增加了对严格光学滤波的信号容限，从而在诸如DWDM的应用中实现高频谱效率。
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10.发明授权公开(公告)号：US06381048B1
公开(公告)日：2002-04-30
申请号：US09153605
申请日：1998-09-15
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。
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