公开(公告)号：US08070973B2

公开(公告)日：2011-12-06

申请号：US12286224

申请日：2008-09-29

申请人： Young-Kai Chen ,  Andreas Bertold Leven ,  Yang Yang

发明人： Young-Kai Chen ,  Andreas Bertold Leven ,  Yang Yang

IPC分类号： B44C1/22

CPC分类号： G02B6/122 ,  G02B6/131 ,  G02B6/136 ,  G02B2006/12097

摘要： Apparatus including: a substrate layer having a substantially planar top surface; an optically conductive peak located and elongated on, and spanning a first thickness measured in a direction generally away from, the top surface; the optically conductive peak having first and second lateral walls each including distal and proximal lateral wall portions, the proximal lateral wall portions intersecting the top surface; and first and second sidewall layers located on the distal lateral wall portions, the sidewall layers not intersecting the top surface and spanning a second thickness that is less than the first thickness measured in the same direction.

摘要翻译： 设备包括：具有基本平坦的顶表面的基底层; 位于并延伸并且跨越在大致远离顶表面的方向测量的第一厚度的光导体峰; 所述光导体峰具有第一和第二侧壁，每个侧壁包括远侧和近侧壁部分，所述近侧壁部分与所述顶表面相交; 以及位于所述远侧壁部分上的第一和第二侧壁层，所述侧壁层不与所述顶表面相交并跨越在相同方向上测量的小于所述第一厚度的第二厚度。

公开(公告)号：US20110149370A1

公开(公告)日：2011-06-23

申请号：US12776570

申请日：2010-05-10

申请人： Kun-Yii Tu ,  Ting-Chen Hu ,  Young-Kai Chen

发明人： Kun-Yii Tu ,  Ting-Chen Hu ,  Young-Kai Chen

IPC分类号： G02F1/01

CPC分类号： H04B10/00 ,  G02F1/011 ,  G02F1/0123 ,  G02F2201/122 ,  G02F2203/50 ,  H04B2210/006

摘要： In a radio frequency (RF)-photonic arbitrary waveform generator (AWG), an optical carrier signal is phase-modulated using an arbitrary waveform optical phase generator (AWPOG), which may include, e.g., sequential optical phase modulators. The phase-modulated optical signal is combined with a version of the optical carrier signal to yield an optical waveform, whose amplitude varies with a phase shift introduced by the AWPOG to the optical carrier signal. By manipulating electrical inputs to the AWPOG which control the phase shift, the optical waveform can be arbitrary shaped. The optical waveform may then be converted to an electrical waveform having a radio frequency.

摘要翻译： 在射频（RF） - 光子任意波形发生器（AWG）中，使用任意波形光学相位发生器（AWPOG）对光载波信号进行相位调制，其可以包括例如顺序光相位调制器。 相位调制的光信号与光载波信号的形式组合以产生光波形，其波幅随AWPOG向光载波信号引入的相移而变化。 通过操纵控制相移的AWPOG的电输入，光波形可以是任意形状。 然后可以将光学波形转换成具有射频的电波形。

公开(公告)号：US07747177B2

公开(公告)日：2010-06-29

申请号：US11204607

申请日：2005-08-15

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

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

IPC分类号： H04B10/00

CPC分类号： H04L27/223 ,  H04B10/60 ,  H04B10/6164 ,  H04B10/6165 ,  H04B10/63 ,  H04L27/227 ,  H04L2027/003

摘要： A receiver for coherent detection of a PSK modulated optical carrier includes an optical detector, digital-to-analog converters, and a digital module. The optical detector is configured to mix the modulated optical carrier with two phase components of a reference optical carrier and to produce analog output signals representative of optical signals produced by said mixing. The digital-to-analog converters are connected to receive the analog output signals and to produce digital signals from the received analog output signals. The digital module is connected to receive the digital signals and to perform one of compensating the received digital signals for a conjugate phase misalignment between the mixed components, extracting phase of the received digital signals, and estimating a frequency offset between the two carriers from the received digital signals.

摘要翻译： 用于PSK调制光载波的相干检测的接收机包括光检测器，数 - 模转换器和数字模块。 光学检测器被配置为将调制光载波与参考光载波的两相分量进行混合，并产生代表由所述混频产生的光信号的模拟输出信号。 数模转换器被连接以接收模拟输出信号并从接收到的模拟输出信号产生数字信号。 数字模块被连接以接收数字信号，并执行补偿接收到的数字信号之一用于混合分量之间的共轭相位失准，提取接收到的数字信号的相位，并且从接收到的两个载波之间估计频率偏移 数字信号。

公开(公告)号：US20090238557A1

公开(公告)日：2009-09-24

申请号：US12050225

申请日：2008-03-18

申请人： Young-Kai Chen ,  Mahmoud Rasras ,  Kun-Yii Tu

发明人： Young-Kai Chen ,  Mahmoud Rasras ,  Kun-Yii Tu

IPC分类号： H04B10/08 ,  G02B6/12

CPC分类号： H01S5/0687

摘要： A self-calibrating integrated photonic circuit and a method of controlling the same. In one embodiment, the circuit includes: (1) a substrate, (2) a laser located on the substrate and configured to produce source light at an output frequency, (3) a laser alignment sensor located on the substrate and including: (3a) a reference optical resonator configured to receive the source light, have a null proximate a predetermined center frequency and provide output light as a function of a relationship between the output frequency and the center frequency and (3b) a photodetector configured to provide an electrical signal of a magnitude that is based on the output light and (4) a calibration controller located on the substrate, coupled to the photodetector and configured to adjust the output frequency based on the magnitude.

摘要翻译： 一种自校准集成光子电路及其控制方法。 在一个实施例中，电路包括：（1）衬底，（2）位于衬底上并被配置为以输出频率产生光源的激光器，（3）位于衬底上的激光对准传感器，包括：（3a ）配置为接收源光的参考光学谐振器，具有接近预定中心频率的零点，并且作为输出频率和中心频率之间的关系的函数提供输出光，以及（3b）被配置为提供电信号 基于输出光的幅度和（4）位于衬底上的校准控制器，耦合到光电检测器并且被配置为基于大小来调整输出频率。

公开(公告)号：US20090003838A1

公开(公告)日：2009-01-01

申请号：US11769339

申请日：2007-06-27

申请人： Young-Kai Chen ,  Andreas B. Leven

发明人： Young-Kai Chen ,  Andreas B. Leven

IPC分类号： H04B10/00

CPC分类号： H04B10/508

摘要： An optical data transmission system and a method of communicating data. In one embodiment, the transmission system is part of an optical data communication system that includes: (1) an optical pulse transmitter configured to generate amplitude-modulated optical pulses at a fixed repetition rate, (2) an optical filter coupled to an output of the optical pulse transmitter, having a transmission notch at the fixed repetition rate and configured to filter the optical pulses and (3) an optical detector coupled to an output of the optical filter and configured to produce an output electrical signal representative of intensities of the optical pulses provided by the optical filter.

摘要翻译： 光数据传输系统和数据通信方法。 在一个实施例中，传输系统是光学数据通信系统的一部分，其包括：（1）光脉冲发射器，被配置为以固定的重复频率产生幅度调制的光脉冲，（2）耦合到 所述光脉冲发射器具有固定重复频率的传输陷波并被配置为对所述光脉冲进行滤波;以及（3）耦合到所述滤光器的输出的光学检测器，其被配置为产生表示所述光学脉冲的强度的输出电信号 由滤光器提供的脉冲。

公开(公告)号：US06538486B1

公开(公告)日：2003-03-25

申请号：US09686236

申请日：2000-10-11

申请人： Young-Kai Chen ,  Claus Dorschky ,  Carsten Groepper ,  George Georgiou ,  John Mattia ,  Rajasekhar Pullela ,  Mario Reinhold

发明人： Young-Kai Chen ,  Claus Dorschky ,  Carsten Groepper ,  George Georgiou ,  John Mattia ,  Rajasekhar Pullela ,  Mario Reinhold

IPC分类号： H03K3289

CPC分类号： H03K3/287 ,  H03K3/012 ,  H03K3/2885

摘要： A latch chain having improved input voltage sensitivity. The chain includes a first latch, an amplifier, and a second latch connected in series. The second latch is a conventional latch. The first latch is modified to have a higher sensitivity and lower output voltage swing than conventional latches. The modified latch includes a pair of matched output transistors that generate output voltages and a pair of matched biasing circuits to bias the bases of the output transistors with bias voltages. A sample stage is connected so as to apply first biasing currents to one of the biasing circuits in response to input voltages applied to the first latch during the sample period. In addition, a hold stage is connected so as to apply second biasing currents to the biasing circuits during a hold period. The sample and hold stages are configured to apply different voltage differences between the bases of the output transistors.

摘要翻译： 具有改进的输入电压灵敏度的锁存链。 该链包括串联连接的第一锁存器，放大器和第二锁存器。 第二个闩锁是常规的闩锁。 第一个锁存器被修改为具有比传统锁存器更高的灵敏度和更低的输出电压摆幅。 修改的锁存器包括一对匹配的输出晶体管，其产生输出电压和一对匹配的偏置电路，以偏置电压来偏置输出晶体管的基极。 连接样品级，以便响应于在采样周期期间施加到第一锁存器的输入电压，向偏置电路之一施加第一偏置电流。 此外，保持级被连接以便在保持期间向偏置电路施加第二偏置电流。 采样和保持级配置为在输出晶体管的基极之间施加不同的电压差。

公开(公告)号：US6144710A

公开(公告)日：2000-11-07

申请号：US65193

申请日：1998-04-23

申请人： Jiunn-Tsair Chen ,  Young-Kai Chen ,  Huan-Shang Tsai

发明人： Jiunn-Tsair Chen ,  Young-Kai Chen ,  Huan-Shang Tsai

IPC分类号： H04B7/26 ,  H03M13/23 ,  H04B7/005 ,  H04L25/02 ,  H03D1/04 ,  H03D1/06 ,  H03K5/01 ,  H03K6/04 ,  H04B1/10

CPC分类号： H04L25/0204

摘要： A cellular communication signal receiver receives a desired signal in the presence of at least one co-channel interference signal. The receiver comprises a channel estimator configured to receive a plurality of training signal samples to estimate the finite impulse response to the desired signal and the co-channel interference signal. The finite impulse response estimates having a predetermined number of channel taps defining the length of the desired channel and the length of co-channel interference channel. A Viterbi decoder is coupled to the channel estimator, and configured to receive the desired and co-channel interference signals. The channel estimator generates channel tap estimates. A power calculator is coupled to the channel estimator and configured to estimate the power of the estimated channel taps. A joint channel trimmer is coupled to the power calculator and configured to maintain a joint channel length, such that the desired signal channel length plus the co-channel interference channel length have a fixed size that defines the number of states the Viterbi decoder allocates to the desired signal and the co-channel interference signal.

摘要翻译： 蜂窝通信信号接收机在存在至少一个同信道干扰信号的情况下接收所需信号。 接收机包括信道估计器，其被配置为接收多个训练信号采样以估计对期望信号和同信道干扰信号的有限脉冲响应。 有限脉冲响应估计具有预定数量的信道抽头，其定义所需信道的长度和同信道干扰信道的长度。 维特比解码器耦合到信道估计器，并且被配置为接收期望的和同信道干扰信号。 信道估计器产生信道抽头估计。 功率计算器耦合到信道估计器并且被配置为估计所估计的信道抽头的功率。 联合通道微调器耦合到功率计算器并且被配置为保持联合通道长度，使得期望的信道信道长度加上同信道干扰信道长度具有固定的大小，其定义维特比解码器分配给的信道的数量 所需信号和同信道干扰信号。

公开(公告)号：US5940291A

公开(公告)日：1999-08-17

申请号：US853083

申请日：1997-05-08

申请人： Joel L. Dawson ,  Jenshan Lin ,  Young-Kai Chen

发明人： Joel L. Dawson ,  Jenshan Lin ,  Young-Kai Chen

IPC分类号： G05B13/02

CPC分类号： G05B13/021

摘要： In accordance with one embodiment of the present intention, an adaptive feedback controller is configured to substantially reduce an error control signal defined by the difference between a command signal and the output signal of a controlled device. The adaptive controller comprises a step generator circuit configured to provide a control signal which is employed to vary the input signal received by the controlled device, The control signal is substantially in the shape of a ramp signal having a given slew rate. An adaptive slew rate computation circuit is coupled to the step generator so as to provide a slew rate compensation signal to the step generator to increase the slew rate of the control signal, when the controlled device is responding to a substantially fast varying input signal. The slew rate compensation circuit decreases the slew rate of the control signal, when the controlled device is responding to a slow varying input signal.

摘要翻译： 根据本意图的一个实施例，自适应反馈控制器被配置为基本上减少由控制设备的命令信号和输出信号之间的差定义的误差控制信号。 自适应控制器包括步进发生器电路，其被配置为提供用于改变由受控设备接收的输入信号的控制信号。控制信号基本上是具有给定转换速率的斜坡信号的形状。 自适应转换速率计算电路耦合到步进发生器，以便当受控装置响应于基本上快速变化的输入信号时，向步进发生器提供转换速率补偿信号以增加控制信号的转换速率。 当控制装置响应慢变化的输入信号时，转换速率补偿电路降低控制信号的转换速率。

公开(公告)号：US20140072303A1

公开(公告)日：2014-03-13

申请号：US13608531

申请日：2012-09-10

申请人： Timo J. Pfau ,  Noriaki Kaneda ,  Young-Kai Chen

发明人： Timo J. Pfau ,  Noriaki Kaneda ,  Young-Kai Chen

IPC分类号： H04J14/06 ,  H04J14/02

CPC分类号： H04J14/06 ,  H04B10/516 ,  H04J14/026 ,  H04J14/0298 ,  H04L27/2096 ,  H04L27/2697 ,  H04L27/34

摘要： A system, e.g. for optical communication, includes an I-Q modulator and a transmission signal processor. The I-Q modulator is configured to modulate a first light source in response to first I and Q modulation signals. The transmission signal processor is configured to receive a data stream including data corresponding to a first data subchannel. The processor maps the data subchannel to an optical transmission subchannel and outputs the first I and Q modulation signals. The I and Q modulation signals modulate the light source to produce an optical transmission signal that includes wavelength components corresponding to the optical transmission subchannel.

摘要翻译： 系统，例如 对于光通信，包括I-Q调制器和传输信号处理器。 I-Q调制器被配置为响应于第一I和Q调制信号来调制第一光源。 发送信号处理器被配置为接收包括对应于第一数据子信道的数据的数据流。 处理器将数据子信道映射到光传输子信道，并输出第一I和Q调制信号。 I和Q调制信号调制光源以产生包括对应于光传输子信道的波长分量的光传输信号。

公开(公告)号：US08164819B2

公开(公告)日：2012-04-24

申请号：US12776570

申请日：2010-05-10

申请人： Kun-Yii Tu ,  Ting-Chen Hu ,  Young-Kai Chen

发明人： Kun-Yii Tu ,  Ting-Chen Hu ,  Young-Kai Chen

IPC分类号： G02F1/01

CPC分类号： H04B10/00 ,  G02F1/011 ,  G02F1/0123 ,  G02F2201/122 ,  G02F2203/50 ,  H04B2210/006

摘要： In a radio frequency (RF)-photonic arbitrary waveform generator (AWG), an optical carrier signal is phase-modulated using an arbitrary waveform optical phase generator (AWPOG), which may include, e.g., sequential optical phase modulators. The phase-modulated optical signal is combined with a version of the optical carrier signal to yield an optical waveform, whose amplitude varies with a phase shift introduced by the AWPOG to the optical carrier signal. By manipulating electrical inputs to the AWPOG which control the phase shift, the optical waveform can be arbitrary shaped. The optical waveform may then be converted to an electrical waveform having a radio frequency.

摘要翻译： 在射频（RF） - 光子任意波形发生器（AWG）中，使用任意波形光学相位发生器（AWPOG）对光载波信号进行相位调制，其可以包括例如顺序光相位调制器。 相位调制的光信号与光载波信号的形式组合以产生光波形，其波幅随AWPOG向光载波信号引入的相移而变化。 通过操纵控制相移的AWPOG的电输入，光波形可以是任意形状。 然后可以将光学波形转换成具有射频的电波形。