COMMUNICATION THROUGH PHASE-CONJUGATED OPTICAL VARIANTS
    1.
    发明申请
    COMMUNICATION THROUGH PHASE-CONJUGATED OPTICAL VARIANTS 审中-公开
    通过相位相关的光学变量进行通信

    公开(公告)号:WO2013040004A1

    公开(公告)日:2013-03-21

    申请号:PCT/US2012/054813

    申请日:2012-09-12

    CPC classification number: C02F1/78 H04B10/00 H04B10/516 H04B10/61 Y02W10/37

    Abstract: 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.

    Abstract translation: 一种光传输系统,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,其中所述相位共轭光学变体在一个或多个光偏振中的彼此不同,透射时间,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。

    PERFORMANCE ENHANCEMENT THROUGH OPTICAL VARIANTS
    2.
    发明申请
    PERFORMANCE ENHANCEMENT THROUGH OPTICAL VARIANTS 审中-公开
    通过光学变量进行性能提升

    公开(公告)号:WO2013039968A1

    公开(公告)日:2013-03-21

    申请号:PCT/US2012/054755

    申请日:2012-09-12

    CPC classification number: C02F1/78 H04B10/00 H04B10/516 H04B10/61 Y02W10/37

    Abstract: An optical transport system configured to transmit a set of two or more optical variants per bit-word, with the optical variants in the set being different from one another in one or more of the time of transmission, spatial localization, polarization of light, carrier wavelength, and subcarrier frequency. Differences between the optical variants may also be due to different respective constellation mapping. The optical variants of each set 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 average out the deleterious effects of linear and nonlinear noise/distortions imparted on the individual optical variants in the optical transport link because said noise/distortions are incoherent in nature. In various embodiments, a BER reduction enabled by the use of optical variants can be implemented in addition to or instead of that provided by FEC coding.

    Abstract translation: 一种光传输系统,被配置为在每个位字中传输一组两个或更多个光学变型,其中所述集合中的光学变体在传输时间,空间定位,光的偏振,载波的一个或多个中彼此不同 波长和副载波频率。 光学变体之间的差异也可能是由于不同的星座映射。 每个组的光学变体在接收机处被检测和处理,使得能够在星座映射之前实现对应的电信号的相干相加。 相干相加倾向于平均在光传送链路中赋予各个光学变体的线性和非线性噪声/失真的有害影响,因为所述噪声/失真本质上是不相干的。 在各种实施例中,通过使用光学变体实现的BER减少可以除了由FEC编码提供的或除了由FEC编码提供的BER之外来实现。

    METHOD AND APPARATUS FOR SPACE-DIVISION MULTIPLEXING SYSTEMS
    3.
    发明申请
    METHOD AND APPARATUS FOR SPACE-DIVISION MULTIPLEXING SYSTEMS 审中-公开
    空间多路复用系统的方法与装置

    公开(公告)号:WO2013033703A1

    公开(公告)日:2013-03-07

    申请号:PCT/US2012/053663

    申请日:2012-09-04

    Abstract: A space division multiplexed (SDM) transmission system that includes at least two segments of transmission media in which a spatial assignment of the two segments is different is provided. For example, the SDM transmission may include a first segment of transmission media having a first spatial assignment and a second segment of transmission media having a second spatial assignment, wherein the first spatial assignment differs from the second spatial assignment. An example method obtains an optical signal on a first segment of transmission media having a first spatial assignment and forwards the optical signal on a second segment of transmission media with a different spatial assignment. The transmission media may be a multi-core fiber (MCF), a multi-mode fiber (MMF), a few-mode fiber (FMF), or a ribbon cable comprising nominally uncoupled single-mode fiber (SMF).

    Abstract translation: 提供了包括两个段的空间分配不同的至少两个传输介质段的空分复用(SDM)传输系统。 例如,SDM传输可以包括具有第一空间分配的传输介质的第一段和具有第二空间分配的传输介质的第二段,其中第一空间分配与第二空间分配不同。 示例性方法在具有第一空间分配的传输介质的第一段上获得光信号,并且在具有不同空间分配的传输介质的第二段上转发光信号。 传输介质可以是多芯光纤(MCF),多模光纤(MMF),多模光纤(FMF)或包括名义上未耦合的单模光纤(SMF)的带状电缆)。

    SECURE DATA TRANSMISSION VIA SPATIALLY MULTIPLEXED OPTICAL SIGNALS
    5.
    发明申请
    SECURE DATA TRANSMISSION VIA SPATIALLY MULTIPLEXED OPTICAL SIGNALS 审中-公开
    通过空间多路复用光信号进行安全数据传输

    公开(公告)号:WO2014105579A1

    公开(公告)日:2014-07-03

    申请号:PCT/US2013/076248

    申请日:2013-12-18

    Applicant: ALCATEL LUCENT

    Abstract: Various embodiments provide secure optical transmission of data. Noise may be added to optical signals transmitted by spatial paths of a multimode optical fiber. The noise may be added electrically prior to modulation, or optically after modulation. In some embodiments a transmitter and a receiver cooperate to maintain a noise level sufficient to place a tapped signal in a noise regime that provides a predetermined level of data security.

    Abstract translation: 各种实施例提供数据的安全的光传输。 可以将噪声添加到通过多模光纤的空间路径发送的光信号。 噪声可以在调制之前或光调制后加电。 在一些实施例中,发射机和接收机协调以维持足够的噪声水平,以便将提供预定级别的数据安全性的噪声状态中的抽头信号放置。

    INTRA-LINK SPATIAL-MODE MIXING IN AN UNDER-ADDRESSED OPTICAL MIMO SYSTEM
    6.
    发明申请
    INTRA-LINK SPATIAL-MODE MIXING IN AN UNDER-ADDRESSED OPTICAL MIMO SYSTEM 审中-公开
    在不寻常的光学MIMO系统中的内联空间模式混合

    公开(公告)号:WO2012121929A2

    公开(公告)日:2012-09-13

    申请号:PCT/US2012/026900

    申请日:2012-02-28

    CPC classification number: G02B6/14 H04B10/2581 H04J14/04 H04L1/004

    Abstract: The outage probability in an under-addressed optical MIMO system may be reduced by configuring an intra-link optical mode mixer to dynamically change the spatial-mode mixing characteristics of the link on a time scale that is faster than the channel coherence time. Provided that the MFMO system employs an FEC code that has a sufficient error-correcting capacity for correcting the amount of errors corresponding to an average state of the MIMO channel, this relatively fast dynamic change tends to reduce the frequency of events during which the number of errors per FEC-encoded block of data exceeds the error-correcting capacity of the FEC code.

    Abstract translation: 可以通过配置链路内模式混合器来在比信道相干时间快的时间尺度上动态地改变链路的空间模式混合特性来减少处理不足的MIMO系统中的中断概率。 如果MFMO系统采用具有足够的纠错能力的FEC码来校正与MIMO信道的平均状态相对应的错误量,则该相对较快的动态变化趋向于减少事件的频率 每个FEC编码的数据块的错误超过FEC码的纠错能力。

    OPTICAL MIXER FOR COHERENT DETECTION OF POLARIZATION-MULTIPLEXED SIGNALS
    7.
    发明申请
    OPTICAL MIXER FOR COHERENT DETECTION OF POLARIZATION-MULTIPLEXED SIGNALS 审中-公开
    用于相位检测偏振多重信号的光学混合器

    公开(公告)号:WO2010080307A1

    公开(公告)日:2010-07-15

    申请号:PCT/US2009/067252

    申请日:2009-12-09

    CPC classification number: H04B10/614 H04B10/61 H04B10/611 H04J14/06

    Abstract: An optical mixer that, in one embodiment, has a single optical hybrid optically coupled to a single polarization beam splitter. The optical hybrid mixes a polarization-multiplexed optical communication signal and a local-oscillator signal to generate four mixed signals, each corresponding to a different relative phase shift between the communication and local-oscillator signals. The polarization beam splitter separates each of the mixed signals into two polarization components, subsequent processing of which enables an optical receiver employing the optical mixer to recover the data carried by the communication signal.

    Abstract translation: 在一个实施例中,具有光学耦合到单个偏振分束器的单个光学混合器的光学混合器。 光混合器混合偏振复用光通信信号和本地振荡器信号以产生四个混合信号,每个混合信号对应于通信和本地振荡器信号之间的不同的相对相移。 偏振光束分离器将每个混合信号分离为两个偏振分量,其后续处理使得采用该光混合器的光接收器能够恢复通信信号承载的数据。

    COMMUNICATION SYSTEM AND METHOD WITH SIGNAL CONSTELLATION
    8.
    发明申请
    COMMUNICATION SYSTEM AND METHOD WITH SIGNAL CONSTELLATION 审中-公开
    通信系统和信号信号的方法

    公开(公告)号:WO2010077946A1

    公开(公告)日:2010-07-08

    申请号:PCT/US2009/068254

    申请日:2009-12-16

    CPC classification number: H04B10/5053 H04B10/5561

    Abstract: An example method includes modulating an optical signal using a Phase Shift Keying (PSK) signal constellation, wherein signal points of the PSK signal constellation are located on at least two rings. The first ring has a first radius rl and a second ring has a second radius r2, wherein the first radius and second radius differ, and wherein the signal points are not located on a regular n-dimension lattice, where n is an integer. The regular n-dimension lattice is formed from a minimum number of lines parallel to an axis for each of the n-dimensions that connect ones of the signal points of the PSK signal constellation on either side of an origin of the axis. The second radius may be greater than the first radius, with the second radius a non-integer multiple of the first ring radius.

    Abstract translation: 示例性方法包括使用相移键控(PSK)信号星座来调制光信号,其中PSK信号星座的信号点位于至少两个环上。 第一环具有第一半径rl,第二环具有第二半径r2,其中第一半径和第二半径不同,并且其中信号点不位于规则的n维晶格上,其中n是整数。 规则的n维格子由平行于轴线的最小数量的线形成,每个n维连接在轴原点两侧的PSK信号星座的信号点之一。 第二半径可以大于第一半径,第二半径是第一环半径的非整数倍。

    OPTICAL MODULATOR FOR HIGHER-ORDER MODULATION
    9.
    发明申请
    OPTICAL MODULATOR FOR HIGHER-ORDER MODULATION 审中-公开
    用于高阶调制的光调制器

    公开(公告)号:WO2010005500A2

    公开(公告)日:2010-01-14

    申请号:PCT/US2009/003846

    申请日:2009-06-29

    CPC classification number: H04B10/505 H04B10/532 H04B10/541 H04B10/5561

    Abstract: According to one embodiment of the invention, a 16-QAM optical modulator has a Mach-Zehnder modulator (MZM) coupled to a drive circuit that drives the MZM based on two electrical binary signals. The output of the MZM corresponds to an intermediary constellation consisting of four constellation points arranged on a straight line in the corresponding in-phase/quadrature-phase (I-Q) plane. Two of these constellation points correspond to a zero phase, and the remaining two constellation points correspond to a phase of π radian. The 16-QAM optical modulator further has a phase shifter that modulates the output of the MZM based on two additional electrical binary signals. The resulting optical output signal corresponds to a star 16-QAM constellation, which is produced by incremental rotation of the intermediary constellation.

    Abstract translation: 根据本发明的一个实施例,16-QAM光调制器具有耦合到驱动电路的Mach-Zehnder调制器(MZM),该驱动电路基于两个电二进制信号来驱动MZM。 MZM的输出对应于由在相应的同相/正交相位(I-Q)平面中直线上排列的四个星座点组成的中间星座。 这些星座点中的两个对应于零相位,并且剩余的两个星座点对应于π弧度的相位。 16-QAM光调制器还具有移相器,该移相器基于两个附加的电二进制信号来调制MZM的输出。 所得到的光输出信号对应于星形16-QAM星座,星座16-QAM星座由中间星座的增量旋转产生。

    HIGH-THROUGHPUT ROUTING IN AN OPTICAL NETWORK HAVING A MESH TOPOLOGY
    10.
    发明申请
    HIGH-THROUGHPUT ROUTING IN AN OPTICAL NETWORK HAVING A MESH TOPOLOGY 审中-公开
    具有网格拓扑的光网络中的高通路径

    公开(公告)号:WO2014160536A1

    公开(公告)日:2014-10-02

    申请号:PCT/US2014/030229

    申请日:2014-03-17

    Applicant: ALCATEL LUCENT

    Abstract: An optical routing scheme in which an optical network having a mesh topology is configured to route optical packets through an optical routing layout superimposable with the mesh topology, but having a star-like topology. Using this routing layout, the optical network can be configured to transport optical packets from respective ingress nodes, through the hub node located at the star center, to respective egress nodes in a manner that enables a data throughput that approaches the theoretical capacity. No special hardware is required for implementing the hub functionality, and any node of the optical network can be configured to serve as the hub node. The latter feature enables relatively straightforward optimization of the optical routing layout and transmission schedule, e.g., by changing the identity of the hub node and adjusting the transmission schedule at the ingress nodes to synchronize packet arrivals to the hub node.

    Abstract translation: 一种光路由方案,其中具有网状拓扑的光网络被配置为通过与网状拓扑重叠但具有星形拓扑的光路由布局路由光分组。 使用该路由布局,光网络可以被配置为以使得能够接近理论容量的数据吞吐量的方式将来自相应入口节点的光分组传输到位于星中心的集线器节点到相应出口节点。 实现集线器功能不需要特殊硬件,光网络的任何节点都可以配置为集线器节点。 后者的特征使得可以例如通过改变集线器节点的身份并调整入口节点处的传输调度以使分组到达到集线器节点而相对简单地优化光路由布局和传输调度。

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