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    • 5. 发明公开
    • SYNCHRONOUS SIGNAL TRANSMISSION SYSTEM, SYNCHRONOUS DRIVE SYSTEM FOR OPTICAL MODULATOR, SYNCHRONOUS SIGNAL TRANSMISSION METHOD, AND NON-TEMPORARY COMPUTER-READABLE MEDIUM STORING PROGRAM THEREFOR
    • 系统同步信号的传输,同步驱动系统,光调制器用于其存储程序的同步信令和非暂时性的计算机可读介质的方法
    • EP2709293A1
    • 2014-03-19
    • EP12786296.9
    • 2012-04-06
    • NEC Corporation
    • YAMASE, Tomoyuki
    • H04B10/04G02F1/03G02F1/035H04B10/06H04B10/14H04B10/142H04B10/152H04B10/26H04B10/28
    • H04L25/40G02F1/0121G02F1/2255G02F2001/212H04B10/25H04B10/5053H04B10/556H04L27/20
    • Provided are a signal synchronization transmission system, a synchronization drive system for optical modulator, a signal synchronization transmission method, and a program thereof, in which phase synchronization may be established with a high degree of accuracy.The present invention includes optical phase modulation circuits (26A, 26B) as one and another transmission processing devices that transmit a plurality of pieces of data in a phase-synchronous manner, and one and another synchronization drive means (33A, 33B) for synchronously control transmission operations of the optical phase modulation circuits. The synchronization drive means (33A, 33B) respectively include phase interpolation circuits (42, 72) that externally receive reference clocks that set operation timings of the optical phase modulation circuits (26A, 26B) through predetermined paths set in advance, and perform phase interpolation processing on the reference clocks to generate synchronization setting clocks, and synchronization setting circuits (60, 76) that set the synchronization setting clocks that are generated as timing clocks, and based on the timing clocks, synchronously set timings of data transmission operations of the optical phase modulation circuits (26A, 26B) together with transmission data signals.
    • 本发明提供一种信号同步传输系统中,用于光学调制器,信号同步传输方法的同步驱动系统,以及它们的程序,(其中相位同步可以以高度的accuracy.The本发明的建立包括光相位调制电路 26A,26B),其一个和另一个发送处理设备没有发送数据的条在相同步的方式多个,并且一个又一个的同步驱动装置(33A,33B),用于同步地控制所述光相位调制电路的传输操作。 同步驱动装置(33A,33B)分别包括相位内插电路(42,72)并从外部接收参考时钟并通过在预先设定的预定路径设置的光相位调制电路(26A,26B)的动作定时,并执行相位内插 在基准时钟处理,以产生同步设置时钟,和同步设定电路(60,76)并设置同步设置时钟并作为定时时钟产生,并且基于定时时钟,光的数据传输操作的同步组定时 相位调制电路(26A,26B)与传输数据信号一起。
    • 8. 发明公开
    • LIGHT TRANSFER APPARATUS AND LIGHT TRANSFER METHOD
    • LICHTÜBERTRAGUNGSSYSTEMUNDLICHTÜBERTRAGUNGSVERFAHREN
    • EP3101828A4
    • 2017-09-06
    • EP14881215
    • 2014-01-31
    • MITSUBISHI ELECTRIC CORP
    • YOSHIDA TSUYOSHI
    • H04B10/556G02F1/01H04B10/2507H04B10/532H04B10/61H04J14/00H04J14/06
    • H04B10/2507H04B10/40H04B10/532H04B10/556H04B10/58H04B10/616
    • An object of this invention is to obtain an optical transmission apparatus and an optical transmission method with which a pair of phase-conjugate signals can be transmitted and synthesized on a reception side without a reduction in frequency utilization efficiency, thereby suppressing a reduction in transmission quality. In an optical transmission apparatus in which an optical emission unit and an optical reception unit are connected to each other via an optical transmission unit, the optical emission unit includes a signal arrangement unit that generates respective pairs of phase-conjugate signals of a plurality of systems on the basis of externally input signals of a plurality of systems, mixes together the pairs of phase-conjugate signals, and then arranges the pairs of phase-conjugate signals discretely in orthogonally polarized electric fields, and an optical modulation unit that converts electric signals from the signal arrangement unit into optical signals and outputs the optical signals to the optical transmission unit, and the optical reception unit includes a photoelectric conversion unit that converts the optical signals transmitted by the optical transmission unit into electric signals, and a signal reconstruction unit that reconstructs the original signals of the plurality of systems by synthesizing the intermixed and discretely arranged signals from the photoelectric conversion unit.
    • 本发明的目的是获得一种光发送装置和光发送方法,通过该光发送装置和光发送方法,可以在接收侧发送并合成一对相位共轭信号而不降低频率利用效率,从而抑制了传输质量的下降 。 在光发射单元和光接收单元经由光发射单元彼此连接的光发射装置中,光发射单元包括信号布置单元,其产生多个系统的相应的相位共轭信号对 在多个系统的外部输入信号的基础上,将成对的相位共轭信号混合在一起,然后将成对的相位共轭信号离散地排列在正交极化的电场中,以及光调制单元, 信号配置单元转换成光信号并输出​​到光发送单元,光接收单元包括将光发送单元发送的光信号转换成电信号的光电转换单元和重构 sy的多个系统的原始信号 合并来自光电转换单元的混合和离散排列的信号。