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公开(公告)号：US20100239267A1
公开(公告)日：2010-09-23
申请号：US12741518
申请日：2008-10-30
Applicant: Nobuhiko Kikuchi
Inventor： Nobuhiko Kikuchi
CPC classification number: H04L27/2096 , H04L27/361
Abstract: It is provided an optical field transmitter comprising a light source, a DA converter and an optical field modulator. The optical field transmitter modulates an information signal into an optical field signal. The information signal includes one of multilevel signals arranged irregularly on a complex plane and multilevel signals arranged by combining mutually different numbers of phase values in at least two amplitude values. The optical field transmitter further comprises a phase pre-accumulation circuit for outputting phase pre-accumulation complex information obtained by previously accumulating a phase component of the information signal at predetermined time intervals. The DA converter converts the information signal including the output phase pre-accumulation complex information into an analog signal, and inputs the converted analog signal to the optical field modulator. The optical field modulator modulates output light into the optical field signal by using the analog signal, and transmits the modulated optical field signal.
Abstract translation: 提供了一种包括光源，DA转换器和光场调制器的光场发射器。 光场发射机将信息信号调制成光场信号。 信息信号包括在复平面上不规则地布置的多电平信号中的一个，并且通过在至少两个振幅值中组合相互不同数量的相位值而布置的多电平信号。 光场发射器还包括相位预累积电路，用于输出通过以预定的时间间隔预先累积信息信号的相位分量获得的相位预累积复合信息。 DA转换器将包括输出相位预累积复合信息的信息信号转换为模拟信号，并将转换的模拟信号输入到光场调制器。 光场调制器通过使用模拟信号将输出光调制成光场信号，并发送调制的光场信号。
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公开(公告)号：US20090317075A1
公开(公告)日：2009-12-24
申请号：US12485574
申请日：2009-06-16
Applicant: Kohei MANDAI , Nobuhiko Kikuchi
Inventor： Kohei MANDAI , Nobuhiko Kikuchi
CPC classification number: H04B10/677 , H04B10/60
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US20090092401A1
公开(公告)日：2009-04-09
申请号：US12222574
申请日：2008-08-12
Applicant: Kenro Sekine , Nobuhiko Kikuchi , Shinya Sasaki
Inventor： Kenro Sekine , Nobuhiko Kikuchi , Shinya Sasaki
CPC classification number: G02F1/0123 , G02F1/2255 , G02F2001/212 , H04B10/5053 , H04B10/50577 , H04B10/50595 , H04L27/2071 , H04L27/2096
Abstract: In a quaternary phase modulator including two phase modulators disposed in parallel and a phase adjuster that adjusts a phase difference when the outputs of the two phase modulators are combined, there are provided a second light source that introduces light propagated in a backward direction, a first controller that controls the bias of the two phase modulators so that the intensity of the backward light is a minimum on the input side of the quaternary phase modulator, and a second controller that controls the bias of the phase adjuster so that a result monitored by a photodiode having a bandwidth not exceeding the bit rate on the output side of the quaternary phase modulator is a minimum, the first controller being implemented after the second controller is implemented.
Abstract translation: 在包括并联设置的两个相位调制器和在两个相位调制器的输出被组合时调节相位差的相位调节器的四元相位调制器中，提供了一种引入沿后向传播的光的第二光源，第一 控制器，其控制两个相位调制器的偏置，使得反向光的强度在四元相位调制器的输入侧是最小的;以及第二控制器，其控制相位调节器的偏置，使得由a 具有不超过四元相位调制器的输出侧的比特率的带宽的光电二极管是最小的，第一控制器在实现第二控制器之后被实现。
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公开(公告)号：US07515832B2
公开(公告)日：2009-04-07
申请号：US11354136
申请日：2006-02-15
Applicant: Nobuhiko Kikuchi
Inventor： Nobuhiko Kikuchi
IPC: H04B10/00
CPC classification number: H04B10/5051 , H04B10/5053 , H04B10/5055 , H04B10/5161 , H04B10/541 , H04B10/5561 , H04B10/66 , H04L27/2096 , H04L27/223
Abstract: Optical transmission equipment, capable of electrically adjusting the delay difference between a plurality of digital signal paths to be connected to a multilevel optical modulation unit or demodulation unit, having multiplexing circuits connected to the digital signal paths and a delay adjustment unit inserted in one of the digital signal paths to adjust delay of N-bit-parallel low-speed digital signals with the timing unit of a bit period of a high-speed serial digital signal to be outputted from multiplexing circuit.
Abstract translation: 光传输设备能够电连接多个连接到数字信号路径的多路复用电路的多电平光调制单元或解调单元的多个数字信号路径之间的延迟差，以及延迟调整单元 数字信号路径，用于从多路复用电路输出高速串行数字信号的位周期的定时单元来调整N位并行低速数字信号的延迟。
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35.发明授权公开(公告)号：US07450288B2
公开(公告)日：2008-11-11
申请号：US11562068
申请日：2006-11-21
Applicant: Nobuhiko Kikuchi
Inventor： Nobuhiko Kikuchi
CPC classification number: G02F1/0123 , G02F1/025 , G02F2001/212 , G02F2201/127 , H04B10/505 , H04B10/5051 , H04B10/50575
Abstract: In the bias stabilization control using average optical power of signal light, there is a case where a control algorithm (maximum control or minimum control) changes depending on the amplitude of clock voltage, or it becomes out of control. In an optical modulation device for performing CSRZ optical modulation on outgoing light from an optical source, control light inputted from a control light input path is inputted into an LN-MZ optical modulator having traveling-wave type modulating electrodes from a direction opposite to signal light, and the average optical power is detected by a photodetector. A bias-voltage Vb is so generated that this optical power may be minimized, and is applied to a bias input terminal, whereby automatic bias stabilization control is performed.
Abstract translation: 在使用信号光的平均光功率的偏置稳定控制中，存在控制算法（最大控制或最小控制）根据时钟电压的幅度而变化或失控的情况。 在用于对来自光源的出射光进行CSRZ光调制的光调制装置中，从控制光输入路径输入的控制光从与信号光相反的方向输入到具有行波型调制电极的LN-MZ光调制器 并且光电检测器检测平均光功率。 偏置电压Vb被产生，使得该光功率可以被最小化，并被施加到偏置输入端子，由此执行自动偏置稳定控制。
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Patent Agency Ranking
公开(公告)号：US5880876A
公开(公告)日：1999-03-09
申请号：US733185
申请日：1996-10-17
Applicant: Nobuhiko Kikuchi , Shinya Sasaki
Inventor： Nobuhiko Kikuchi , Shinya Sasaki
IPC: H04B10/2507 , H04B10/07 , H04B10/2525 , H04B10/255 , H04B10/2563 , H04B10/54 , H04B10/58 , H04B10/12 , G02B6/10 , H04B10/18
CPC classification number: H04B10/2519 , H04B10/25253 , H04B10/255
Abstract: An optical transmission system in which influences of worsening of the waveform by SPM are cancelled by setting an amount of compensation of a dispersion compensator at about 50% of a total amount of dispersion of an optical fiber transmission line so that received waveform is almost not varied, even if light intensity is varied. In the case where a plurality of dispersion compensators are used, the number of compensators is optimized by setting arrangement interval in the neighborhood of a receiving end at a small value. Further, in a transmission line, in which amounts of dispersion of optical fibers have positive and negative fluctuations, the smallest transmission distance of a transmission system is increased by effecting dispersion compensation so that an expected value of the total amount of dispersion of the transmission line is abnormal dispersion.
Abstract translation: 通过将色散补偿器的补偿量设置在光纤传输线的总色散的约50％以使接收波形几乎不变的光传输系统，其中SPM波形恶化的影响被消除 即使光强变化也是如此。 在使用多个色散补偿器的情况下，通过将接收端附近的布置间隔设定为较小的值来优化补偿器的数量。 此外，在其中光纤的色散量具有正和负波动的传输线中，通过进行色散补偿来增加传输系统的最小传输距离，使得传输线的总色散量的期望值 是异常分散。
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公开(公告)号：US08472807B2
公开(公告)日：2013-06-25
申请号：US13131524
申请日：2009-11-16
Applicant: Nobuhiko Kikuchi
Inventor： Nobuhiko Kikuchi
IPC: H04B10/00
Abstract: It is provided an optical field transmitter comprising a light source, one or more DA converters, an optical field modulator, a complex information multilevel signal generator circuit, and a phase pre-integration circuit. The optical field modulator modulates light output from the light source into a optical field signal by using the analog signal converted from a complex multilevel information signal including phase pre-integration complex information by the one or more DA converters. A phase angle of the complex multilevel information signal at a complex signal point is any one of values of integral multiples obtained by dividing 360 degrees by a positive integer N. An amplitude value of the complex multilevel information signal at the complex signal point is any one of values of a positive integer M. A total number of the complex signal points which may be taken is lower than a product of N and M.
Abstract translation: 提供了一种包括光源，一个或多个DA转换器，光场调制器，复信息多电平信号发生器电路和相位预积分电路的光场发射器。 光场调制器通过使用由一个或多个DA转换器包括相位预积分复合信息的复数多级信息信号转换的模拟信号，将从光源输出的光调制成光场信号。 复信号点处的复数多级信息信号的相位角是通过将360度除以正整数N而获得的积分倍数的值中的任何一个。复信号点处的复数多级信息信号的振幅值是任何一个 正整数M的值。可以采取的复信号点的总数小于N和M的乘积。
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公开(公告)号：US20120281988A1
公开(公告)日：2012-11-08
申请号：US13520730
申请日：2010-01-07
Applicant: Nobuhiko Kikuchi
Inventor： Nobuhiko Kikuchi
IPC: H04B10/18
CPC classification number: H04B10/6971 , H04B10/5561 , H04B10/677
Abstract: In an optical multilevel transmitter (210), a polar representation of an optical multilevel signal (r, φ) is generated by a polar coordinate multilevel signal generation circuit (212), input to an optical amplitude modulator (211) and a polar coordinate type optical phase modulator (201), and output as an optical multilevel modulated signal (213). The polar coordinate type optical phase modulator (201) generates an optical phase rotation proportional to an input voltage, so the modulation distortion of the electric signal is transferred in a linear form to the optical phases of the optical multilevel modulated signal (213). In an optical multilevel receiver (219), a received signal is input to two sets of optical delay detectors (133) and balance receivers (134) and directly demodulated, and a differential phase Δφ for the received signal is calculated by arctangent computation from the output signal. In a phase adaptive equalizer (205), the modulation distortion of the phase is removed by adaptive equalization of the differential phase Δφ. By separately receiving the amplitude components and combining them, the modulation distortion is removed and highly sensitive optical multilevel transmission is achieved.
Abstract translation: 在光学多电平发射机（210）中，通过极坐标多电平信号产生电路（212）产生光学多电平信号（r，＆phgr）的极性表示，输入到光学幅度调制器（211）和极坐标 型光学相位调制器（201），并作为光学多级调制信号（213）输出。 极坐标型光相位调制器（201）产生与输入电压成比例的光相位旋转，因此电信号的调制失真以线性形式传送到光学多层调制信号（213）的光学相位。 在光学多电平接收器（219）中，接收信号被输入到两组光学延迟检测器（133）和平衡接收器（134）并被直接解调，并且差分相位＆Dgr＆amp; 对于接收信号，通过输出信号的反正切运算来计算。 在相位自适应均衡器（205）中，相位的调制失真通过差分相位＆Dgr＆amp; phgr的自适应均衡来消除。 通过分别接收振幅分量并进行组合，消除了调制失真，实现了高灵敏度的光学多层传输。
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公开(公告)号：US08265489B2
公开(公告)日：2012-09-11
申请号：US12741518
申请日：2008-10-30
Applicant: Nobuhiko Kikuchi
Inventor： Nobuhiko Kikuchi
IPC: H04B10/04
CPC classification number: H04L27/2096 , H04L27/361
Abstract: It is provided an optical field transmitter comprising a light source, a DA converter and an optical field modulator. The optical field transmitter modulates an information signal into an optical field signal. The information signal includes one of multilevel signals arranged irregularly on a complex plane and multilevel signals arranged by combining mutually different numbers of phase values in at least two amplitude values. The optical field transmitter further comprises a phase pre-accumulation circuit for outputting phase pre-accumulation complex information obtained by previously accumulating a phase component of the information signal at predetermined time intervals. The DA converter converts the information signal including the output phase pre-accumulation complex information into an analog signal, and inputs the converted analog signal to the optical field modulator. The optical field modulator modulates output light into the optical field signal by using the analog signal, and transmits the modulated optical field signal.
Abstract translation: 提供了一种包括光源，DA转换器和光场调制器的光场发射器。 光场发射机将信息信号调制成光场信号。 信息信号包括在复平面上不规则地布置的多电平信号中的一个，并且通过在至少两个振幅值中组合相互不同数量的相位值而布置的多电平信号。 光场发射器还包括相位预累积电路，用于输出通过以预定的时间间隔预先累积信息信号的相位分量获得的相位预累积复合信息。 DA转换器将包括输出相位预累积复合信息的信息信号转换为模拟信号，并将转换的模拟信号输入到光场调制器。 光场调制器通过使用模拟信号将输出光调制成光场信号，并发送调制的光场信号。
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公开(公告)号：US08095018B2
公开(公告)日：2012-01-10
申请号：US12222574
申请日：2008-08-12
Applicant: Kenro Sekine , Nobuhiko Kikuchi , Shinya Sasaki
Inventor： Kenro Sekine , Nobuhiko Kikuchi , Shinya Sasaki
CPC classification number: G02F1/0123 , G02F1/2255 , G02F2001/212 , H04B10/5053 , H04B10/50577 , H04B10/50595 , H04L27/2071 , H04L27/2096
Abstract: In a quaternary phase modulator including two phase modulators disposed in parallel and a phase adjuster that adjusts a phase difference when the outputs of the two phase modulators are combined, there are provided a second light source that introduces light propagated in a backward direction, a first controller that controls the bias of the two phase modulators so that the intensity of the backward light is a minimum on the input side of the quaternary phase modulator, and a second controller that controls the bias of the phase adjuster so that a result monitored by a photodiode having a bandwidth not exceeding the bit rate on the output side of the quaternary phase modulator is a minimum, the first controller being implemented after the second controller is implemented.
Abstract translation: 在包括并联设置的两个相位调制器和在两个相位调制器的输出被组合时调节相位差的相位调节器的四元相位调制器中，提供了一种引入沿后向传播的光的第二光源，第一 控制器，其控制两个相位调制器的偏置，使得反向光的强度在四元相位调制器的输入侧是最小的;以及第二控制器，其控制相位调节器的偏置，使得由a 具有不超过四元相位调制器的输出侧的比特率的带宽的光电二极管是最小的，第一控制器在第二控制器被实现之后被实现。
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