METHOD AND ARRANGEMENT FOR ADAPTIVE DISPERSION COMPENSATION
    1.
    发明申请
    METHOD AND ARRANGEMENT FOR ADAPTIVE DISPERSION COMPENSATION 有权
    自适应分布补偿的方法和布置

    公开(公告)号:US20140294387A1

    公开(公告)日:2014-10-02

    申请号:US14228985

    申请日:2014-03-28

    CPC classification number: H04B10/6166 H04B10/2513 H04B10/6971 H04J14/06

    Abstract: A received optical signal is coherently demodulated and converted into electrical complex samples (p(n); (px(n), py(n)), which are dispersion compensated in a compensation filter (11). A control circuit (12, 13, 14, 15) calculates comparison values (R1, R2) from corrected samples q(n) and an estimated error value (εMIN).A plurality of compensation function (T(M)) is applied according to a predetermined dispersion (CD) range and after a second iteration is the compensation filter (11) set to an optimum compensation function (T(M)).

    Abstract translation: 接收的光信号被相干解调并转换成在补偿滤波器(11)中进行色散补偿的电复杂样本(p(n);(px(n),py(n)),控制电路 ,14,15)根据校正样本q(n)和估计误差值(&egr MIN)计算比较值(R1,R2),根据预定色散(T(M))应用多个补偿函数 CD)范围,并且在第二次迭代之后,将补偿滤波器(11)设置为最佳补偿函数(T(M))。

    DUAL PARALLEL MACH-ZEHNDER-MODULATOR DEVICE WITH PRE-DISTORTED DRIVING VOLTAGES
    3.
    发明申请
    DUAL PARALLEL MACH-ZEHNDER-MODULATOR DEVICE WITH PRE-DISTORTED DRIVING VOLTAGES 审中-公开
    具有预失真驱动电压的双并联MACH-ZEHNDER-MODULATOR设备

    公开(公告)号:US20170054511A1

    公开(公告)日:2017-02-23

    申请号:US15119072

    申请日:2015-03-12

    Abstract: Disclosed herein is a dual parallel Mach-Zehnder-modulator (DPMZM) device comprising a DPMZM 10 having first and second inner MZMs arranged parallel to each other. The first inner MZM generates an in-phase component EI of an optical signal in response to a first driving voltage VI, and the second inner MZM generates a quadrature component EQ of said optical signal in response to a second driving voltage VQ. Further disclosed is a calculation unit 52 configured for receiving an in-phase component yI and a quadrature component yQ_ of a desired base-band signal, and for calculating pre-distorted first and second driving voltages VI, VQ. The calculation of the pre-distorted first and second driving voltages VI, VQ is based on a model of said DPMZM 10 accounting for I-Q cross-talk, and using an algorithm that determines said first and second driving voltages VI, VQ each as a function of both of said in-phase and quadrature components yI, yQ of said base-band signal.

    Abstract translation: 本文公开了一种双并联马赫 - 曾德尔调制器(DPMZM)装置,其包括具有彼此平行布置的第一和第二内部MZM的DPMZM 10。 第一内部MZM响应于第一驱动电压VI产生光学信号的同相分量EI,并且第二内部MZM响应于第二驱动电压VQ产生所述光学信号的正交分量EQ。 还公开了一种计算单元52,被配置为接收期望的基带信号的同相分量yI和正交分量yQ_,并且用于计算预失真的第一和第二驱动电压VI,VQ。 预失真的第一和第二驱动电压VI,VQ的计算基于所述DPMZM 10的IQ串扰模型,并且使用将所述第一和第二驱动电压VI,VQ分别确定为功能的算法 所述基带信号的所述同相和正交分量yI,yQ。

    METHOD, DEVICE AND COMMUNICATION SYSTEM FOR REDUCING OPTICAL TRANSMISSION IMPAIRMENTS
    6.
    发明申请
    METHOD, DEVICE AND COMMUNICATION SYSTEM FOR REDUCING OPTICAL TRANSMISSION IMPAIRMENTS 审中-公开
    用于减少光传输损害的方法,装置和通信系统

    公开(公告)号:US20160127047A1

    公开(公告)日:2016-05-05

    申请号:US14890373

    申请日:2014-05-12

    CPC classification number: H04B10/58 H04B10/2543 H04B10/60 H04B10/6163

    Abstract: A method and device is provided for reducing optical transmission impairments, particularly nonlinear effects, of at least one link Said method comprising the following steps: extracting a phase information (Δθ) from an optical signal (120) received via that at least one link, determining a nonlinear coefficient (γ), associated with the at least one link, based on the phase information (Δθ), applying a control mechanism (202) using the nonlinear coefficient (γ). Furthermore, a communication system is suggested comprising said device.

    Abstract translation: 提供了一种用于减少至少一个链路的光传输损伤特别是非线性效应的方法和装置。所述方法包括以下步骤:从经由至少一个接收到的光信号(120)接收的光信号(120)提取相位信息(&Dgr;& 一个链路,基于所述相位信息(&Dgr;& t),确定与所述至少一个链路相关联的非线性系数(γ)),使用所述非线性系数(γ)应用控制机制(202)。 此外,建议包括所述设备的通信系统。

    AUTOMATIC MEASUREMENT OF THE NOISE PERFORMANCE OF A TRANSPONDER

    公开(公告)号:US20210021338A1

    公开(公告)日:2021-01-21

    申请号:US17040002

    申请日:2019-02-05

    Abstract: Disclosed herein is a transponder (14), comprising a transmitter (18) for generating and transmitting an optical signal and a receiver (20), wherein said receiver (20) comprises a receiver input amplifier (40) at the receiver's input. The transponder further comprises a bypass line (46) configured to selectively feed an optical signal from said transmitter (18) to the receiver (20), and a control unit (22) configured for determining the performance of the transponder (14) in relation to an OSNR related parameter, by controlling the transponder to generate a noise signal to be received by the receiver (20), by operating the receiver input amplifier (40) to thereby cause ASE in the receiver input amplifier (40) and to determine a noise intensity value, generate a test signal at the transmitter (18) and to determine a signal intensity value and superimpose said noise signal and said test signal, or replicas thereof, to form a combined signal to be received by said receiver (20) and determining said performance related parameter based on said combined signal, wherein for generating said combined signal, said test signal is fed from the transmitter (18) to the receiver by means of said bypass line (46).

Patent Agency Ranking