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    • 1. 发明授权
    • Optical balanced receiver and IQ receiver with balanced compensation
    • 光学平衡接收器和IQ接收器具有均衡补偿
    • US08340533B2
    • 2012-12-25
    • US12485574
    • 2009-06-16
    • Kohei MandaiNobuhiko Kikuchi
    • Kohei MandaiNobuhiko Kikuchi
    • H04B10/06
    • H04B10/677H04B10/60
    • An optical balanced receiver including an optical coupler for combining input optical information signal and optical reference signal and outputting two optical interfering signals whose phases are opposite to each other, two photodetectors for receiving the two optical interfering signals and outputting detection signals as electrical signals having the amplitudes corresponding to the interference intensities of the received optical interfering signals, a balance compensation type difference device for compensating an intensity fluctuation component added to a difference signal of the two detection signals due to the difference in amplitude and/or delay between the detection signals output from the two photodetectors in accordance with an input control signal, and outputting the compensated difference signal of the two detection signals, and a control circuit for outputting the control signal to the balance compensation type difference device.
    • 一种光学平衡接收机,包括用于组合输入光信息信号和光参考信号的光耦合器,并输出相位彼此相反的两个光干涉信号,两个光电检测器,用于接收两个光干涉信号,并将检测信号作为电信号输出, 对应于接收到的光干涉信号的干涉强度的幅度,用于补偿由于检测信号输出之间的幅度差和/或延迟引起的两个检测信号的差分信号相加的强度波动分量的平衡补偿型差分装置 根据输入控制信号从两个光电检测器输出并输出两个检测信号的补偿差分信号,以及用于将控制信号输出到平衡补偿型差分装置的控制电路。
    • 3. 发明授权
    • Polarization multiplexing transmitter and transmission system
    • 极化复用发射机和传输系统
    • US08417126B2
    • 2013-04-09
    • US12985455
    • 2011-01-06
    • Kohei MandaiNobuhiko KikuchiShinya Sasaki
    • Kohei MandaiNobuhiko KikuchiShinya Sasaki
    • H04B10/04
    • H04J14/06
    • A polarization multiplexing transmitter which generates polarization-multiplexed signals which are arbitrarily polarization-scrambled at high speed, without adding a polarization modulator and a polarization scrambler. In the transmitter, an orthogonally polarized signal generator includes two optical modulators which modulate the electric fields of optical signals and generate two optical signals with mutually orthogonal polarized waves. The transmitter includes electric field mappers which convert two data strings into electric field signals, polarization mappers which give different polarized waves to the two signals, polarization rotators which rotate the polarized waves of the signals uniformly, a polarization multiplexer which multiplexes the two polarization-rotated signals, a polarization demultiplexer which demultiplexes the multiplexed signal into polarized wave components of optical signals generated by the orthogonally polarized signal generator, and a driver. The optical modulators are driven to make the two demultiplexed electric field signals consistent with the electric fields of optical signals modulated by the modulators.
    • 一种偏振复用发送器,其生成以高速任意偏振加扰的偏振复用信号,而不添加偏振调制器和偏振加扰器。 在发射机中,正交极化信号发生器包括调制光信号的电场并产生具有相互正交的极化波的两个光信号的两个光调制器。 发射机包括将两个数据串转换为电场信号的电场映射器,向两个信号提供不同极化波的偏振映射器,使信号的偏振波均匀旋转的偏振旋转器,多路复用两个偏振旋转 信号,将多路复用信号解复用为由正交偏振信号发生器产生的光信号的偏振波分量的偏振解复用器和驱动器。 驱动光调制器以使两个解复用的电场信号与由调制器调制的光信号的电场一致。
    • 5. 发明申请
    • OPTICAL RECEIVER AND OPTICAL TRANSFER APPARATUS
    • 光接收器和光传输设备
    • US20110293270A1
    • 2011-12-01
    • US13113591
    • 2011-05-23
    • Hiroshi TakeuchiKohei MandaiKoji TakatoriYasuyuki FukashiroHideaki Tsushima
    • Hiroshi TakeuchiKohei MandaiKoji TakatoriYasuyuki FukashiroHideaki Tsushima
    • H04B10/06H04J14/00
    • H04B10/25133
    • It is provided an optical receiver comprising a compensator, a compensation controller and a clock extractor. The optical receiver selects first and second values, and obtains a stabilization time necessary to change the dispersion value and a transition time shorter than the stabilization time, compensates the received optical signal using the selected first value, changes the dispersion value from the first value into the second value, compensates the received optical signal using the dispersion value when the transition time has passed since starting to change the dispersion value, creates second extraction information of the dispersion value after the transition time, compensates for dispersion of the optical signal using an dispersion value calculated based on the second value and the difference between the dispersion value after the transition time and the second value in a case where the created second extraction information indicates that the clock extraction is available.
    • 提供了一种光接收器,包括补偿器,补偿控制器和时钟提取器。 光接收机选择第一值和第二值,并获得改变色散值和比稳定时间短的转换时间所需的稳定时间,使用所选择的第一值补偿接收到的光信号,将色散值从第一值改变为 第二值,由于从开始改变色散值开始经过转换时间之后,利用色散值补偿接收到的光信号,在转换时间之后产生色散值的第二提取信息,使用色散补偿光信号的色散 在创建的第二提取信息表示时钟提取可用的情况下,基于第二值计算的值和转换时间之后的色散值与第二值之间的差值。
    • 9. 发明授权
    • Optical receiver and optical transfer apparatus
    • 光接收机和光传输设备
    • US08712255B2
    • 2014-04-29
    • US13113591
    • 2011-05-23
    • Hiroshi TakeuchiKohei MandaiKoji TakatoriYasuyuki FukashiroHideaki Tsushima
    • Hiroshi TakeuchiKohei MandaiKoji TakatoriYasuyuki FukashiroHideaki Tsushima
    • H04B10/67H04B10/69
    • H04B10/25133
    • It is provided an optical receiver comprising a compensator, a compensation controller and a clock extractor. The optical receiver selects first and second values, and obtains a stabilization time necessary to change the dispersion value and a transition time shorter than the stabilization time, compensates the received optical signal using the selected first value, changes the dispersion value from the first value into the second value, compensates the received optical signal using the dispersion value when the transition time has passed since starting to change the dispersion value, creates second extraction information of the dispersion value after the transition time, compensates for dispersion of the optical signal using an dispersion value calculated based on the second value and the difference between the dispersion value after the transition time and the second value in a case where the created second extraction information indicates that the clock extraction is available.
    • 提供了一种光接收器,包括补偿器,补偿控制器和时钟提取器。 光接收机选择第一值和第二值,并获得改变色散值和比稳定时间短的转换时间所需的稳定时间,使用所选择的第一值补偿接收到的光信号,将色散值从第一值改变为 第二值,由于从开始改变色散值开始经过转换时间之后,利用色散值补偿接收到的光信号,在转换时间之后产生色散值的第二提取信息,使用色散补偿光信号的色散 在创建的第二提取信息表示时钟提取可用的情况下,基于第二值计算的值和转换时间之后的色散值与第二值之间的差值。