MONOLITHIC DQPSK RECEIVER
    1.
    发明申请
    MONOLITHIC DQPSK RECEIVER 审中-公开
    单片DQPSK接收器

    公开(公告)号:US20090074426A1

    公开(公告)日:2009-03-19

    申请号:US11856000

    申请日:2007-09-14

    CPC classification number: G02F1/3136 G02F2203/06 H04B10/677 H04L27/2331

    Abstract: A monolithic, Indium Phosphide (InP) differential phase-shift keying (DPSK) or differential quadrature phase shift keying (DQPSK) receiver that exhibits low polarization sensitivity.

    Abstract translation: 具有低极化灵敏度的单片,磷化铟(InP)差分相移键控(DPSK)或差分正交相移键控(DQPSK)接收机。

    OPTICAL EQUALIZATION OF MULTI-LEVEL SYMBOL CONSTELLATIONS
    4.
    发明申请
    OPTICAL EQUALIZATION OF MULTI-LEVEL SYMBOL CONSTELLATIONS 有权
    多级符号信号的光学均衡

    公开(公告)号:US20080231944A1

    公开(公告)日:2008-09-25

    申请号:US11772110

    申请日:2007-06-29

    CPC classification number: H04B10/2507 H04B10/541 H04B10/548

    Abstract: A method of optically equalizing a multi-level (amplitude or phase) optical signal through the effect of an optical equalizer wherein the optical equalizer (OEQ) is placed at either a transmission end or a receiver end of the optical communications link and a tap delay characteristic of the OEQ need not be determined by symbol spacing, rather it may advantageously be adjusted to desirably compensate non-linear mapping performed in the modulation process or simultaneous operation on a plurality of wavelength division multiplexed (WDM) channels.

    Abstract translation: 一种通过光学均衡器的作用对多电平(幅度或相位)光信号进行光学均衡的方法,其中光均衡器(OEQ)被放置在光通信链路的发射端或接收机端,并且抽头延迟 OEQ的特征不需要由符号间隔确定,而是可以有利地调整以期望地补偿在多个波分复用(WDM)信道上的调制过程中执行的非线性映射或同时操作。

    OPTICAL MODULATOR
    5.
    发明申请
    OPTICAL MODULATOR 审中-公开
    光学调制器

    公开(公告)号:US20080231933A1

    公开(公告)日:2008-09-25

    申请号:US11690820

    申请日:2007-03-24

    CPC classification number: G02F1/225 G02F1/015 G02F2001/0155 G02F2201/126

    Abstract: A driving circuit and Mach-Zehnder EAM optical modulator exhibiting negligible chirp that generates a PSK signal when driven by a single drive signal. Two such Mach-Zehnder EAM optical modulators and drive circuits may be configured in parallel, thereby generating DQPSK signals with only two drive signals, one for each individual Mach-Zehnder EAM modulator.

    Abstract translation: 驱动电路和马赫 - 曾德EAM光调制器显示出可忽略的啁啾,当由单个驱动信号驱动时产生PSK信号。 两个这样的Mach-Zehnder EAM光调制器和驱动电路可以并联配置,从而产生仅具有两个驱动信号的DQPSK信号,每个单独的Mach-Zehnder EAM调制器一个。

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