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1. 发明授权

US10009114B2 Method and system for controlling phase of a signal 有权
公开(公告)号：US10009114B2
公开(公告)日：2018-06-26
申请号：US15127421
申请日：2014-12-02
申请人： Ariel-University Research and Development Company Ltd.
发明人： Shmuel Sternklar , Moran Biton
IPC分类号： H04B10/548 , H04B10/50
CPC分类号： H04B10/548 , G01S17/36 , H04B10/50577 , H04L27/361
摘要： A method of generating a signal being phase-shifted at a predetermined phase-shift division factor relative to a reference signal is disclosed. The method comprises: using the predetermined phase-shift division factor for selecting a modulation amplitude, modulating a control signal at the selected modulation amplitude, and combining the reference signal and the control signal to form the phase-shifted.

2. 发明申请

US20180138978A1 OPTO-ELECTRONIC OSCILLATOR WITH STIMULATED BRILLOUIN SCATTERING FEEDBAC, 审中-公开
公开(公告)号：US20180138978A1
公开(公告)日：2018-05-17
申请号：US15867853
申请日：2018-01-11
申请人： U.S. Army Research Laboratory ATTN: RDRL-LOC-I
发明人： Weimin Zhou
IPC分类号： H04B10/2537 , H04B10/50
CPC分类号： H04B10/2537 , H03B17/00 , H03K3/00 , H04B10/50577 , H04B2210/006
摘要： An architecture for an optoelectronic oscillator uses Stimulated Brillouin Scattering (SBS) to seed, filter and amplify the oscillation signal in an overlapped oscillator loop for both a RF modulated optical sideband and a SBS signal. By phase matching the RF modulated optical sideband generated by SBS with the SBS signal, the feedback will collapse the bandwidth of the SBS signal and in turn the bandwidth of the Brillouin frequency signal, which also serves as a filter to filter out multiple undesired OEO loop modes. The embodiments herein result in reduced phase noise and increased stability.

3. 发明申请

US20160191170A1 INTEGRATED OPTICAL PHASED ARRAY 审中-公开
标题翻译：集成光学相位阵列
公开(公告)号：US20160191170A1
公开(公告)日：2016-06-30
申请号：US14812267
申请日：2015-07-29
申请人： California Institute of Technology
发明人： Firooz AFLATOUNI , Behrooz Abiri , Seyed Ali Hajmiri
IPC分类号： H04B10/548 , H04B10/50 , H04B10/25
CPC分类号： H04B10/548 , G02F1/2955 , H04B10/2504 , H04B10/501 , H04B10/50577 , H04B10/60
摘要： An integrated optical phased array includes an input channel receiving an optical input signal, and a multitude of signal processing channels each adapted to supply an associated optical output signal along a first axis in response to the input signal. Each signal processing channel includes, in part, a phase modulator adapted to modulate the phase of the signal travelling through the channel, thereby to control or steer the output signal of the phased array. Each channel optionally includes first and second photo detection circuits respectively generating first and second detection signals. The first and second detection signals in each channel may be used to modulate the amplitude and/or phase of the output signal of that channel thereby to control and steer the output signal of the phased array.
摘要翻译：集成的光学相控阵列包括接收光输入信号的输入通道和多个信号处理通道，每个信号处理通道适于响应输入信号沿第一轴提供相关的光输出信号。每个信号处理通道部分地包括相位调制器，其适于调制通过通道传播的信号的相位，从而控制或引导相控阵列的输出信号。每个通道可选地包括分别产生第一和第二检测信号的第一和第二光电检测电路。每个通道中的第一和第二检测信号可以用于调制该通道的输出信号的幅度和/或相位，从而控制和引导相控阵列的输出信号。

4. 发明申请

US20140308047A1 OPTIMUM MODULATOR BIAS SYSTEMS AND METHODS IN COHERENT OPTICAL TRANSMITTERS 有权
标题翻译：最优调制器偏置系统和相干光发射机的方法
公开(公告)号：US20140308047A1
公开(公告)日：2014-10-16
申请号：US13860827
申请日：2013-04-11
申请人： Gary Mak , Yves Beaulieu , Mohammad Sotoodeh
发明人： Gary Mak , Yves Beaulieu , Mohammad Sotoodeh
IPC分类号： G02F1/01
CPC分类号： H04B10/548 , G02F1/0123 , G02F1/2255 , H04B10/5055 , H04B10/50575 , H04B10/50577 , H04B10/532 , H04B10/541 , H04B10/5561
摘要： A modulator bias selection method, a coherent optical transmitter, and optical modulator solve the problem of generating a correct constellation using the bias points with the minimum phase adjustment range. The optimum modulator bias systems and methods include a coherent optical transmitter with control of four (XI, XQ, YI, YQ) quadrature data signals via a transmitter (Tx) application specific integrated circuit (ASIC), with a modulator bias controller which implements an algorithm to find the optimum bias points. The optimum bias points yield a correct constellation with minimum phase/bias adjustment. An algorithm is used to find the optimum bias solution using fast, simple method, adjusting only one quadrature at a time and exploiting a control feature of the Tx ASIC. This algorithm is significantly simpler than a generalized search, is a local algorithm, and uses only DC power measurement at the transmitter.
摘要翻译：调制器偏置选择方法，相干光发射机和光调制器使用具有最小相位调整范围的偏置点来解决产生正确星座的问题。最佳调制器偏置系统和方法包括通过发射机（Tx）专用集成电路（ASIC）控制四个（XI，XQ，YI，YQ）正交数据信号的相干光发射机，具有调制器偏置控制器，其实现算法找到最佳偏好点。最佳偏置点产生具有最小相位/偏置调整的正确星座。使用一种算法来使用快速，简单的方法找到最佳的偏置解决方案，一次调整一个正交，并利用Tx ASIC的控制特性。该算法比广义搜索要简单得多，是局部算法，仅在发射机上使用直流功率测量。

5. 发明申请

US20140233084A1 PHASE MODULATION APPARATUS 有权
标题翻译：相位调制装置
公开(公告)号：US20140233084A1
公开(公告)日：2014-08-21
申请号：US13871714
申请日：2013-04-26
申请人： NTT ELECTRONICS CORPORATION , NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Shigeru Ono , Kouichi Ogihara , Jun Endo , Mikio Yoneyama
IPC分类号： G02F1/01
CPC分类号： G02F1/01 , G02F1/0123 , G02F1/225 , G02F2001/212 , G02F2203/21 , H04B10/5053 , H04B10/50577 , H04B10/5561 , H04B2210/517
摘要： A phase modulation apparatus has a light source outputting continuous light, two phase modulators, and an intensity modulator. The phase modulation apparatus is provided with an RZ phase modulation circuit, in which the phase modulators phase-modulate the continuous light from the light source with data signals input to the phase modulators and generate two phase modulation optical signals, a phase shifter shifts the phase of one phase modulation optical signal by π/2, and an intensity modulator intensity-modulates a multiplexed signal, combined with the other phase modulation optical signal, with an input clock signal CLK to convert the signal into an RZ signal, and, thus, to output the RZ signal, and a phase control circuit which adjusts the phases of the phase modulation optical signals generated by the phase modulator of the RZ phase modulation circuit so that the output of the RZ phase modulation circuit is maximum.
摘要翻译：相位调制装置具有输出连续光的光源，两相调制器和强度调制器。相位调制装置设置有RZ相位调制电路，其中相位调制器利用输入到相位调制器的数据信号对来自光源的连续光进行相位调制，并产生两个相位调制光信号，移相器将相位一个相位调制光信号由＆pgr / / 2组成，强度调制器利用输入时钟信号CLK对与多个其它相位调制光信号相结合的多路复用信号进行强度调制，将该信号转换成RZ信号，从而输出RZ信号;以及相位控制电路，其调整由RZ相位调制电路的相位调制器产生的相位调制光信号的相位，使得RZ相位调制电路的输出最大。

6. 发明授权

US08774645B2 Method and apparatus for controlling bias point of differential quadrature phase shift keying demodulator 有权
标题翻译：用于控制差分正交相移键控解调器偏置点的方法和装置
公开(公告)号：US08774645B2
公开(公告)日：2014-07-08
申请号：US13634469
申请日：2010-08-20
申请人： Jianhua Chen , Hong Yi
发明人： Jianhua Chen , Hong Yi
IPC分类号： H04B10/06
CPC分类号： H04B10/69 , H04B10/50575 , H04B10/50577 , H04B10/677
摘要： Method and apparatus for controlling bias point of DQPSK demodulator are disclosed. The method comprises: step 1: respectively applying first and second bias voltages to I-path and Q-path, and applying identical pilot voltage signals to I-path and Q-path (S202); step 2: executing filtering processing on I-path and Q-path differential current signals collected by balance receiver and determining θIand θQ (S204); step 3: performing feedback control to first and second bias voltages respectively according to θI and θQ so that θI and θQ respectively reaches expected bias point values of I-path and Q-path (S206); executing step 2 and 3 cyclically at preset regular intervals (S208), so that θI and θQ remains consistently the expected bias point values of I-path and Q-path. The solution enables bias point of DQPSK demodulator to be locked at any expected bias point value, facilitates realization of digitization, and is not easily influenced.
摘要翻译：公开了用于控制DQPSK解调器偏置点的方法和装置。该方法包括：步骤1：分别对I路径和Q路径施加第一和第二偏置电压，并向I路径和Q路径施加相同的导频电压信号（S202）; 步骤2：对平衡接收机收集的I路径和Q路径差分电流信号执行滤波处理和确定; Iand＆thetas; Q（S204）; 步骤3：分别根据I和I等级Q对第一和第二偏置电压进行反馈控制，使得I和I等于Q分别达到I路径和Q路径的预期偏置点值（S206）; 以预定的时间间隔循环执行步骤2和3（S208），使得I和＆amp; t; Q保持一致地是I-path和Q-path的预期偏置点值。该解决方案使DQPSK解调器的偏置点能够被锁定在任何预期的偏置点值，便于数字化的实现，并且不容易受到影响。

7. 发明申请

US20130322892A1 Integrated Optical Phased Array 有权
标题翻译：集成光相控阵
公开(公告)号：US20130322892A1
公开(公告)日：2013-12-05
申请号：US13684018
申请日：2012-11-21
申请人： California Institute of Technology
发明人： Firooz Aflatouni , Behrooz Abiri , Seyed Ali Hajimiri
IPC分类号： H04B10/548
CPC分类号： H04B10/548 , H04B10/2504 , H04B10/501 , H04B10/50577 , H04B10/60
摘要： An integrated optical phased array includes an input channel receiving an optical input signal, and a multitude of signal processing channels each adapted to supply an associated optical output signal along a first axis in response to the input signal. Each signal processing channel includes, in part, a phase modulator adapted to modulate the phase of the signal travelling through the channel, thereby to control or steer the output signal of the phased array. Each channel optionally includes first and second photo detection circuits respectively generating first and second detection signals. The first and second detection signals in each channel may be used to modulate the amplitude and/or phase of the output signal of that channel thereby to control and steer the output signal of the phased array.
摘要翻译：集成的光学相控阵列包括接收光输入信号的输入通道和多个信号处理通道，每个信号处理通道适于响应输入信号沿第一轴提供相关的光输出信号。每个信号处理通道部分地包括相位调制器，其适于调制通过通道传播的信号的相位，从而控制或引导相控阵列的输出信号。每个通道可选地包括分别产生第一和第二检测信号的第一和第二光电检测电路。每个通道中的第一和第二检测信号可以用于调制该通道的输出信号的幅度和/或相位，从而控制和引导相控阵列的输出信号。

8. 发明申请

US20130155482A1 OPTICAL MODULATION DEVICE AND OPTICAL MODULATION METHOD 有权
标题翻译：光学调制装置和光学调制方法
公开(公告)号：US20130155482A1
公开(公告)日：2013-06-20
申请号：US13663758
申请日：2012-10-30
申请人： Fujitsu Optical Components Limited
发明人： Akihiro TOYA , Tsuyoshi Morishita
IPC分类号： G02F1/01
CPC分类号： G02F1/01 , G02F1/0123 , H04B10/50572 , H04B10/50575 , H04B10/50577 , H04B10/5561
摘要： In an optical modulation device, a first drive signal and a first bias signal are applied to a phase modulation unit, a second drive signal and a second bias signal are applied to a phase modulation unit, and a third bias signal is applied to a π/2 phase shift unit. A control unit adjusts the third bias signal in a first adjustment period, adjusts the first drive signal and the first bias signal in a second adjustment period next to the first adjustment period, and adjusts the second drive signal and the second bias signal in a third adjustment period next to the second adjustment period. The control unit starts the second adjustment period before a gap between the current value of an adjustment reference signal and a target value is filled, and starts the third adjustment period before a gap in the second adjustment period is filled.
摘要翻译：在光调制装置中，将第一驱动信号和第一偏置信号施加到相位调制单元，将第二驱动信号和第二偏置信号施加到相位调制单元，并将第三偏置信号施加到pi / 2相移单元。控制单元在第一调整周期中调整第三偏置信号，在与第一调整周期相邻的第二调整周期中调整第一驱动信号和第一偏置信号，并且在第三调整周期中调整第二驱动信号和第二偏置信号调整期在第二个调整期之后。控制单元在填充调整基准信号的当前值和目标值之间的间隙之前开始第二调整周期，并且在第二调整周期中的间隙被填满之前开始第三调整周期。

9. 发明申请

US20120230679A1 OPTICAL TRANSMITTER 审中-公开
标题翻译：光学发射器
公开(公告)号：US20120230679A1
公开(公告)日：2012-09-13
申请号：US13508548
申请日：2010-02-22
申请人： Shusaku Hayashi , Yasuhisa Shimakura , Kazushige Sawada
发明人： Shusaku Hayashi , Yasuhisa Shimakura , Kazushige Sawada
IPC分类号： H04B10/04 , H04B10/08
CPC分类号： H04B10/50577 , H04B10/5051 , H04B10/516
摘要： An optical transmitter includes: a data generating unit configured to generate a plurality of modulating signals; a driver configured to amplify the plurality of modulating signals generated by the data generating unit; a phase shifter configured to control a phase of at least one signal among the plurality of modulating signals to be input to the driver; a plurality of optical modulators connected in series to each other, and configured to modulate an optical signal on a basis of each of the modulating signals amplified by the driver; an optical coupler configured to branch the optical signal modulated by the optical modulator arranged at a last stage in the series; a photodiode configured to detect the optical signal branched by the optical coupler and convert the optical signal into an electric signal; and a phase control unit configured to control an amount of phase control of the phase shifter to maximize an intensity of the electric signal converted by the photodiode.
摘要翻译：光发射机包括：数据生成单元，被配置为产生多个调制信号; 被配置为放大由数据生成单元生成的多个调制信号的驱动器; 移相器，被配置为控制要输入到所述驱动器的所述多个调制信号中的至少一个信号的相位; 多个光调制器，其彼此串联连接，并且被配置为基于由所述驱动器放大的每个调制信号来调制光信号; 光耦合器，被配置为分支由布置在所述串联的最后阶段的由所述光调制器调制的光信号; 光电二极管，被配置为检测由光耦合器分支的光信号并将光信号转换成电信号; 以及相位控制单元，被配置为控制所述移相器的相位控制量以使由所述光电二极管转换的电信号的强度最大化。

10. 发明申请

US20120082465A1 OPTICAL TRANSMITTING APPARATUS, OPTICAL RECEIVING APPARATUS, AND OPTICAL COMMUNICATION SYSTEM COMPRISING THEM 有权
标题翻译：光传输装置，光接收装置，以及包含它们的光通信系统
公开(公告)号：US20120082465A1
公开(公告)日：2012-04-05
申请号：US12879820
申请日：2010-09-10
申请人： Yuichi Akiyama , Takeshi Hoshida , Akira Miura , Yutaka Kai , Hiroki Ooi , Jens Rasmussen , Kentaro Nakamura , Naoki Kuwata , Yoshinori Nishizawa , Tomoo Takahara , Masahiro Yuki
发明人： Yuichi Akiyama , Takeshi Hoshida , Akira Miura , Yutaka Kai , Hiroki Ooi , Jens Rasmussen , Kentaro Nakamura , Naoki Kuwata , Yoshinori Nishizawa , Tomoo Takahara , Masahiro Yuki
IPC分类号： H04B10/06 , H04B10/00
CPC分类号： G02F1/2255 , G02F1/0123 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50575 , H04B10/50577 , H04B10/50595 , H04B10/5162 , H04B10/5165 , H04B10/5561 , H04B10/66 , H04B10/677
摘要： A phase shift unit provides a prescribed phase difference (π/2, for example) between a pair of optical signals transmitted via a pair of arms constituting a data modulation unit. A low-frequency signal f0 is superimposed on one of the optical signals. A signal of which phase is shifted by π/2 from the low-frequency signal f0 is superimposed on the other optical signal. A pair of the optical signals is coupled, and a part of which is converted into an electrical signal by a photodiode. 2f0 component contained in the electrical signal is extracted. Bias voltage provided to the phase shift unit is controlled by feedback control so that the 2f0 component becomes the minimum.
摘要翻译：相移单元在经由构成数据调制单元的一对臂发送的一对光信号之间提供规定的相位差（＆pgr / / 2）。低频信号f0叠加在一个光信号上。将相位从低频信号f0移位了＆pgr / / 2的信号叠加在另一个光信号上。一对光信号被耦合，其一部分由光电二极管转换成电信号。提取包含在电信号中的2f0分量。通过反馈控制来控制提供给相移单元的偏压，使得2f0分量成为最小值。

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