公开(公告)号：US07873284B2

公开(公告)日：2011-01-18

申请号：US10830331

申请日：2004-04-22

申请人： Young-Kai Chen ,  Andreas Leven

发明人： Young-Kai Chen ,  Andreas Leven

IPC分类号： H04B10/12

CPC分类号： H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/541

摘要： An apparatus includes an optical splitter, an optical combiner, first and second optical paths, and a digital signal generator. The optical splitter has an input port and first and second output ports. The optical combiner has first and second input ports and an output port. The first optical path couples the first output port of the splitter to the first input port of the combiner. The second optical path couples the second output port of the splitter to the second input port of the combiner. Each optical path includes an electro-optical phase shifter, and one of the optical paths includes an electro-optical attenuator. The digital signal generator is configured to apply binary-valued voltage signals to control inputs of the phase shifters and the attenuator.

摘要翻译： 一种装置包括光分路器，光组合器，第一和第二光路以及数字信号发生器。 光分路器具有输入端口和第一和第二输出端口。 光合并器具有第一和第二输入端口和输出端口。 第一光路将分离器的第一输出端口耦合到组合器的第一输入端口。 第二光路将分离器的第二输出端口耦合到组合器的第二输入端口。 每个光路包括电光移相器，并且其中一个光路包括电光衰减器。 数字信号发生器被配置为应用二进制值电压信号来控制移相器和衰减器的输入。

公开(公告)号：US20100247103A1

公开(公告)日：2010-09-30

申请号：US12384006

申请日：2009-03-31

申请人： Young-Kai Chen ,  Kun-Yii Tu ,  Michael George Zierdt

发明人： Young-Kai Chen ,  Kun-Yii Tu ,  Michael George Zierdt

IPC分类号： H04B10/00

CPC分类号： H03F1/0294

摘要： A radiofrequency (rf) signal-processing device offers the possibility of high bandwidth operation. The disclosed device applies principles of microwave photonics and Linear Amplification based on Nonlinear Components (LINC). For some applications, the device may be embodied in an rf amplifier or rf transmitter. In an embodiment, an optical phase modulator is configured to receive an optical carrier signal as input, and further configured so that, when driven by an rf modulation signal, it will produce a complementary pair of optical signals as output. Each of a pair of detectors is configured to convert a respective one of the complementary optical signals to an rf signal. An rf combiner is configured to add the converted radiofrequency signals from the detectors to form an output signal.

摘要翻译： 射频（RF）信号处理设备提供高带宽操作的可能性。 所公开的设备应用基于非线性分量（LINC）的微波光子学和线性放大的原理。 对于一些应用，该装置可以体现在射频放大器或射频发射机中。 在一个实施例中，光相位调制器被配置为接收作为输入的光载波信号，并进一步被配置为使得当由rf调制信号驱动时，它将产生互补的一对光信号作为输出。 一对检测器中的每一个被配置为将互补光信号中的相应一个转换成rf信号。 配置rf组合器以将来自检测器的经转换的射频信号相加以形成输出信号。

公开(公告)号：US20090324250A1

公开(公告)日：2009-12-31

申请号：US12317090

申请日：2008-12-19

申请人： Young-Kai Chen ,  Vincent Etienne Houtsma ,  Ting-Chen Hu ,  Nils Guenter Weimann

发明人： Young-Kai Chen ,  Vincent Etienne Houtsma ,  Ting-Chen Hu ,  Nils Guenter Weimann

IPC分类号： H04B10/04

CPC分类号： H04B10/00 ,  H04B2210/006

摘要： A wireless transmitter includes an optical modulator, an optical power splitter, a plurality of electrical drivers, and a plurality of antennas. The optical power splitter has a plurality of optical outputs and has an optical input connected to receive a modulated optical carrier from the optical modulator. Each driver is configured to detect a portion of the modulated optical carrier output by one of the optical outputs of the optical power splitter. Each antenna is connected to be driven by one of the electrical drivers.

摘要翻译： 无线发射机包括光调制器，光功率分配器，多个电驱动器和多个天线。 光功率分配器具有多个光输出，并具有连接以从光调制器接收调制光载波的光输入。 每个驱动器被配置为检测由光功率分配器的光输出之一输出的调制光载波的一部分。 每个天线被连接以由其中一个电驱动器驱动。

公开(公告)号：US07471855B2

公开(公告)日：2008-12-30

申请号：US11180122

申请日：2005-07-13

申请人： Young-Kai Chen ,  Vincent Etienne Houtsma ,  Andreas Bertold Leven ,  Nils Guenter Weimann

发明人： Young-Kai Chen ,  Vincent Etienne Houtsma ,  Andreas Bertold Leven ,  Nils Guenter Weimann

IPC分类号： G02B6/12

CPC分类号： G02B6/4204 ,  G02B6/30

摘要： An optical integrated circuit comprises a semiconductor body, a semiconductor optical waveguide located on the body, and a bipolar phototransistor located on and optically coupled to the waveguide. In a preferred embodiment, the base region of the transistor is configured to absorb radiation propagating in the waveguide, but the emitter and collector regions are both configured not to absorb the propagating radiation. In a further preferred embodiment, the waveguide is configured to guide the radiation along a propagation axis therein, and the transistor makes an elongated footprint along the waveguide, the footprint being elongated along the direction of the propagation axis. In another preferred embodiment, the footprint is at least three times longer along the propagation axis than along a direction perpendicular thereto.

摘要翻译： 光学集成电路包括半导体本体，位于本体上的半导体光波导和位于光学耦合到波导的双极光电晶体管。 在优选实施例中，晶体管的基极区被配置为吸收在波导中传播的辐射，但是发射极和集电极区域均被配置为不吸收传播辐射。 在另一优选实施例中，波导被配置为沿其中的传播轴引导辐射，并且晶体管沿着波导形成细长的占地面积，所述覆盖区沿着传播轴线的方向延伸。 在另一个优选实施例中，沿着传播轴线的距离比垂直于其的方向至少长三倍。

公开(公告)号：US20070071456A1

公开(公告)日：2007-03-29

申请号：US11236246

申请日：2005-09-27

申请人： Young-Kai Chen ,  Ut-Va Koc ,  Andreas Leven

发明人： Young-Kai Chen ,  Ut-Va Koc ,  Andreas Leven

IPC分类号： H04B10/06

CPC分类号： H04B10/64 ,  H04B10/61 ,  H04B10/613 ,  H04B10/615

摘要： An optical heterodyne receiver and a method of extracting data from a phase-modulated input optical signal. In one embodiment, the optical heterodyne receiver includes: (1) a photonic quadrature demodulator having first and second optical inputs and first and second electrical outputs and configured to generate at the first and second electrical outputs an in-phase signal and a quadrature-phase signal, respectively, in response to receiving a modulated optical signal at the first optical input and a reference optical oscillator signal at the second optical input, (2) a passive radio frequency single sideband demodulator coupled to the photonic quadrature demodulator and configured to extract at least one sideband of the in-phase signal or the quadrature-phase signal and (3) at least one analog-to-digital converter coupled to the passive radio frequency single sideband demodulator and configured to receive and sample the at least one sideband.

摘要翻译： 光学外差接收器和从相位调制输入光信号中提取数据的方法。 在一个实施例中，光学外差接收器包括：（1）光子正交解调器，其具有第一和第二光学输入以及第一和第二电输出并被配置为在第一和第二电输出处产生同相信号和正交相位 信号，分别响应于在第一光输入处接收调制的光信号和在第二光输入处的参考光信号，（2）耦合到光子正交解调器的被动射频单边带解调器，并且被配置为在 同相信号或正交相位信号的至少一个边带;以及（3）耦合到无源射频单边带解调器并被配置为接收和采样至少一个边带的至少一个模拟 - 数字转换器。

公开(公告)号：US07146109B2

公开(公告)日：2006-12-05

申请号：US10133469

申请日：2002-04-26

申请人： Young-Kai Chen ,  Andreas Leven

发明人： Young-Kai Chen ,  Andreas Leven

IPC分类号： H04B10/04

CPC分类号： H04B10/5055 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5053

摘要： An optically modulated signal is generated for use in transporting data by generating a so-called sub-carrier modulated optical signal and, then, vector modulating the sub-carrier modulated optical signal to yield the desired modulated optical signal for transmission. The vector modulation includes a phase component and an amplitude component. In one specific embodiment of the invention, an apparatus for use in generating a modulated optical signal includes a generator to generate a sub-carrier modulated optical signal including an optical carrier and at least one sub-carrier and an analog vector modulator coupled to receive both the sub-carrier modulated optical signal from the generator and a data signal. The analog vector modulator generates an output optical signal by phase modulating and/or amplitude modulating the sub-carrier of the received optical signal in response to the data signal.

摘要翻译： 产生光调制信号，用于通过产生所谓的副载波调制光信号传输数据，然后对子载波调制光信号进行矢量调制以产生所需的调制光信号进行传输。 矢量调制包括相位分量和振幅分量。 在本发明的一个具体实施例中，一种用于生成调制光信号的装置包括：发生器，用于产生包括光载波和至少一个子载波的子载波调制光信号，以及耦合以接收两者的模拟向量调制器 来自发生器的副载波调制光信号和数据信号。 模拟矢量调制器通过响应于数据信号相位调制和/或幅度调制所接收的光信号的子载波来产生输出光信号。

公开(公告)号：US20060087394A1

公开(公告)日：2006-04-27

申请号：US10955590

申请日：2004-09-30

申请人： Yves Baeyens ,  Hsin-Hung Chen ,  Young-Kai Chen ,  Yo-Sheng Lin ,  Kun-Yii Tu

发明人： Yves Baeyens ,  Hsin-Hung Chen ,  Young-Kai Chen ,  Yo-Sheng Lin ,  Kun-Yii Tu

IPC分类号： H01F5/00

CPC分类号： H01F17/0006 ,  H01F19/04 ,  H01F2021/125

摘要： An apparatus includes a spiral conductor, a first electronic device, and a second electronic device. The spiral conductor has first and second ends. The first end is a first port of the conductor. An intermediate portion of the conductor is a second port of the conductor. The second end is a third port of the conductor. The first electronic device has a first terminal connected to the first port and has a second terminal connected to the second port. The first electronic device is capable of carrying a current between the first and second terminals. The second electronic device has a third terminal that operates as a current source or sink. The third terminal is connected to the third port.

摘要翻译： 一种装置包括螺旋导体，第一电子装置和第二电子装置。 螺旋导体具有第一和第二端。 第一端是导体的第一个端口。 导体的中间部分是导体的第二端口。 第二端是导体的第三个端口。 第一电子设备具有连接到第一端口的第一端子，并且具有连接到第二端口的第二端子。 第一电子装置能够在第一和第二端子之间承载电流。 第二电子设备具有作为电流源或接收器工作的第三端子。 第三个终端连接到第三个端口。

公开(公告)号：US20060034614A1

公开(公告)日：2006-02-16

申请号：US10982137

申请日：2004-11-05

申请人： Young-Kai Chen ,  Ut-Va Koc ,  Andreas Leven

发明人： Young-Kai Chen ,  Ut-Va Koc ,  Andreas Leven

IPC分类号： H04B10/12

CPC分类号： H04B10/2513 ,  H04B10/2569

摘要： An adaptive optical parallel equalizer architecture is based on a controllable optical FIR filter device to realize an optical FIR (finite-impulse-response) filter including a plurality of coefficient taps in order to have independent control of each optical FIR filter coefficient. A unique adaptive opto-electronic LMS (least mean square) process is utilized to generate an electronic error signal utilized to control the plurality of parallel tap coefficients of the optical parallel equalizer. The electronic error signal is used as the optimization criterion because the electronic signal after photo-detection is needed to achieve any measurable performance in terms of bit error rate (BER). In a specific embodiment, the controllable optical parallel FIR filter is realized by employing an optical vector modulator. The optical vector modulator is realized by splitting a supplied input optical signal into a plurality of parallel similar optical signals, controllably adjusting the phase and/or amplitude of each of the plurality of optical signals and delaying the resulting optical signals in a prescribed manner relative to one another. Then, the “delayed” signals are combined to yield the optical signal comprising the vector modulated input optical signal to be transmitted as an output. In one particular embodiment, both the phase and amplitude is adjusted of each of the plurality of parallel optical signals, and the error control signals for effecting the adjustments are generated in response to the optical FIR filter optical output signal utilizing the unique opto-electronic LMS process.

摘要翻译： 自适应光学并行均衡器架构基于可控光FIR滤波器装置，以实现包括多个系数抽头的光FIR（有限脉冲响应）滤波器，以便对每个光FIR滤波器系数进行独立控制。 使用独特的自适应光电LMS（最小均方）处理来产生用于控制光学并行均衡器的多个并行抽头系数的电子误差信号。 电子误差信号被用作优化标准，因为需要光电检测后的电子信号来实现在误码率（BER）方面的任何可测量的性能。 在具体实施例中，通过采用光矢量调制器来实现可控光并行FIR滤波器。 光矢量调制器通过将提供的输入光信号分成多个平行的相似的光信号来实现，可控制地调节多个光信号中的每一个的信号的相位和/或幅度，并以相对于 另一个。 然后，“延迟”信号被组合以产生包括作为输出发送的矢量调制输入光信号的光信号。 在一个具体实施例中，相位和振幅都被调整为多个并行光信号中的每一个，并且用于进行调整的误差控制信号响应于利用独特光电LMS的光FIR滤波器光输出信号而产生 处理。

公开(公告)号：US20050238367A1

公开(公告)日：2005-10-27

申请号：US10830331

申请日：2004-04-22

申请人： Young-Kai Chen ,  Andreas Leven

发明人： Young-Kai Chen ,  Andreas Leven

IPC分类号： G02F1/03 ,  G02F1/01 ,  G02F1/17 ,  G02F3/00 ,  H04B10/00 ,  H04B10/04 ,  H04B10/06 ,  H04B10/142 ,  H04B10/152 ,  H04B10/155 ,  H04L27/34 ,  H04L27/36

CPC分类号： H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/541

摘要： An apparatus includes an optical splitter, an optical combiner, first and second optical paths, and a digital signal generator. The optical splitter has an input port and first and second output ports. The optical combiner has first and second input ports and an output port. The first optical path couples the first output port of the splitter to the first input port of the combiner. The second optical path couples the second output port of the splitter to the second input port of the combiner. Each optical path includes an electro-optical phase shifter, and one of the optical paths includes an electro-optical attenuator. The digital signal generator is configured to apply binary-valued voltage signals to control inputs of the phase shifters and the attenuator.

摘要翻译： 一种装置包括光分路器，光组合器，第一和第二光路以及数字信号发生器。 光分路器具有输入端口和第一和第二输出端口。 光合并器具有第一和第二输入端口和输出端口。 第一光路将分离器的第一输出端口耦合到组合器的第一输入端口。 第二光路将分离器的第二输出端口耦合到组合器的第二输入端口。 每个光路包括电光移相器，并且其中一个光路包括电光衰减器。 数字信号发生器被配置为应用二进制值电压信号来控制移相器和衰减器的输入。

公开(公告)号：US6016374A

公开(公告)日：2000-01-18

申请号：US963893

申请日：1997-11-04

申请人： Laura Ellen Adams ,  Young-Kai Chen ,  Gerald Nykolak

发明人： Laura Ellen Adams ,  Young-Kai Chen ,  Gerald Nykolak

IPC分类号： G02F1/01 ,  H04B3/04 ,  H04B10/02 ,  H04B10/16 ,  H04B10/17 ,  H04B10/18 ,  H04B10/20 ,  G02B6/28 ,  H03H7/30 ,  H04B10/00

CPC分类号： H04B10/2513 ,  H04B2210/254

摘要： In accordance with the present invention, an optical fiber communications system is provided with an adaptive data equalizer to correct for linear disortion of signals transmitted over optical fibers. A feedback signal from a receiver is used to custom tailor the spectral profile of a launched pulse to thereby minimize the distortion of a received pulse. The system uses optical taps for feedback control in order to adapt to changing conditions in the fiber path.

摘要翻译： 根据本发明，光纤通信系统设置有自适应数据均衡器，以校正通过光纤传输的信号的线性失真。 来自接收机的反馈信号用于定制定制发射脉冲的频谱分布，从而使接收的脉冲的失真最小化。 该系统使用光学抽头进行反馈控制，以适应光纤路径的变化条件。