CHARACTERIZATION AND COMPENSATION OF OPTICAL IMPAIRMENTS IN INP-BASED OPTICAL TRANSMITTER
    1.
    发明申请
    CHARACTERIZATION AND COMPENSATION OF OPTICAL IMPAIRMENTS IN INP-BASED OPTICAL TRANSMITTER 审中-公开
    INP型光发射机光损伤的特性和补偿

    公开(公告)号:WO2017106057A1

    公开(公告)日:2017-06-22

    申请号:PCT/US2016/066036

    申请日:2016-12-09

    IPC分类号: H04B10/073 H04B10/50

    摘要: A method and apparatus for characterizing and compensating optical impairments in an optical transmitter includes operating an optical transmitter comprising a first and second parent MZ, each comprising a plurality of child MZ modulators. An electro-optic RF transfer function is generated for each of the plurality of child MZ modulators. Curve fitting parameters are determined for each of the plurality of electro-optic RF transfer functions and operating points of each child MZ modulator are determined using the curve fitting parameters. An IQ power imbalance is determined using the curve fitting parameters. Initial RF drive power levels are determined that compensate for determined IQ power imbalance. The XY power imbalance is determined for initial RF drive power levels using the curve fitting parameters. The operating RF drive powers are determined that compensate for first and second IQ power imbalances and for XY power imbalance for the optical transmitter.

    摘要翻译: 用于表征和补偿光学发射器中的光学损伤的方法和装置包括操作光学发射器,该光学发射器包括第一和第二母体MZ,每个母体包括多个子MZ调制器。 针对多个子MZ调制器中的每一个生成电光RF传递函数。 针对多个电光RF传递函数中的每一个确定曲线拟合参数,并且使用曲线拟合参数确定每个儿童MZ调制器的操作点。 使用曲线拟合参数确定IQ功率不平衡。 确定初始RF驱动功率水平,以补偿所确定的IQ功率不平衡。 使用曲线拟合参数为初始RF驱动功率水平确定XY功率不平衡。 确定操作RF驱动功率,以补偿光发射机的第一和第二IQ功率不平衡以及XY功率不平衡。

    METHOD AND APPARATUS FOR STABILIZATION OF OPTICAL TRANSMITTER
    2.
    发明申请
    METHOD AND APPARATUS FOR STABILIZATION OF OPTICAL TRANSMITTER 审中-公开
    用于光学发射器稳定的方法和装置

    公开(公告)号:WO2014015043A1

    公开(公告)日:2014-01-23

    申请号:PCT/US2013/050895

    申请日:2013-07-17

    IPC分类号: H04B10/548

    摘要: A DP-QPSK optical transmitter includes an outer MZM comprising a first parent MZM comprising a first child MZM and a second child MZM that modulates a QPSK signal with a first polarization. A second parent MZM includes a first child MZM and a second child MZM that modulating a QPSK signal with a second polarization. The outer Mach-Zehnder modulator multiplexes the first and second polarization embedded into a dual-polarization QPSK signal generation. A first optical detector detects the QPSK signal generated by the first parent MZM with the first polarization. A second optical detector optical detects the QPSK signal generated by the second parent Mach-Zehnder modulator with the second polarization. A bias control circuit generates bias signals on at least one output that stabilize the DP-QPSK signal in response to signals generated by the first and second optical detector using electrical time division multiplexing.

    摘要翻译: DP-QPSK光发射机包括外MZM,其包括第一母MZM,第一母MZM包括第一子MZM和第二子MZM,其以第一极化调制QPSK信号。 第二母MZM包括用第二偏振调制QPSK信号的第一子MZM和第二子MZM。 外部Mach-Zehnder调制器将嵌入的第一和第二偏振复用为双极化QPSK信号生成。 第一光学检测器利用第一偏振检测由第一母MZM产生的QPSK信号。 第二光检测器光检测由具有第二极化的第二母马赫 - 曾德调制器产生的QPSK信号。 偏置控制电路在至少一个输出端上产生偏置信号,该偏置信号响应于使用电时分复用由第一和第二光学检测器产生的信号来稳定DP-QPSK信号。