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81. 发明申请

US20120321303A1 Multiple-Symbol Polarization Switching for Differential-Detection Modulation Formats 有权
标题翻译：用于差分检测调制格式的多符号偏振切换
公开(公告)号：US20120321303A1
公开(公告)日：2012-12-20
申请号：US13523103
申请日：2012-06-14
申请人： Shaoliang Zhang , Fatih Yaman , Lei Xu , Ting Wang , Yoshihisa Inada , Takaaki Ogata , Yasuhiro Aoki
发明人： Shaoliang Zhang , Fatih Yaman , Lei Xu , Ting Wang , Yoshihisa Inada , Takaaki Ogata , Yasuhiro Aoki
IPC分类号： H04Q11/00
CPC分类号： H04Q11/00 , H04B10/532 , H04B10/5561 , H04L27/2075 , H04L27/2096 , H04L27/223 , H04Q2213/1301
摘要： An inventive method for multi-symbol polarization switching for differential detection optical systems includes modulating a laser source by a DQPSK modulator, driving the DQPSK modulator with a data block configured for generating multi-symbol polarization-switched DQPSK differential-encoded signals, and polarizing the multi-symbol polarization-switched DQPSK signals with a polarizing modulator whose modulation speed is based on how often polarization states vary, wherein the data block provides a bits manipulation to provide the multi-symbol polarization switching thereby enabling differential detection for recovering correct original data by a receiver.
摘要翻译：用于差分检测光学系统的多符号偏振切换的创新方法包括通过DQPSK调制器调制激光源，用配置用于产生多符号偏振切换DQPSK差分编码信号的数据块驱动DQPSK调制器，具有偏振调制器的多符号偏振切换DQPSK信号，其调制速度基于偏振态变化的频率，其中数据块提供比特操作以提供多符号偏振切换，从而使差分检测能够通过以下方式恢复正确的原始数据：接收器

82. 发明申请

US20120263468A1 Generation of Optical Quadrature Duobinary Format Using Optical Delay 审中-公开
标题翻译：使用光学延迟生成光学正交二元格式
公开(公告)号：US20120263468A1
公开(公告)日：2012-10-18
申请号：US13446370
申请日：2012-04-13
申请人： Fatih Yaman , Shaoliang Zhang , Lei Xu , Yin Shao , Ting Wang
发明人： Fatih Yaman , Shaoliang Zhang , Lei Xu , Yin Shao , Ting Wang
IPC分类号： H04B10/04 , H04J14/02 , H04J14/06
CPC分类号： H04B10/5167 , H04B10/5561 , H04L27/2096
摘要： An optical method for generating an optical quadrature duobinary QDB signal includes receiving a quadrature phase-shift-keying QPSK signal, and adding a delay to the received quadrature phase-shift-keying QPSK signal to generate an optical quadrature duobinary signal.
摘要翻译：用于产生光学正交双二进制QDB信号的光学方法包括：接收正交相移键控QPSK信号，并将相加的延迟加到接收的正交相移键控QPSK信号上以产生光学正交二进制信号。

83. 发明申请

US20120251028A1 Polarization-Alternating Optical Signal Generation using CSRZ Modulation 有权
标题翻译：使用CSRZ调制的极化交替光信号生成
公开(公告)号：US20120251028A1
公开(公告)日：2012-10-04
申请号：US13435775
申请日：2012-03-30
申请人： Fatih Yaman , Shaoliang Zhang , Lei Xu , Ting Wang , Yoshihisa Inada , Takaaki Ogata , Yasuhiro Aoki
发明人： Fatih Yaman , Shaoliang Zhang , Lei Xu , Ting Wang , Yoshihisa Inada , Takaaki Ogata , Yasuhiro Aoki
IPC分类号： G02F1/01
CPC分类号： G02F1/01 , H04B10/5162 , H04B10/5165 , H04B10/532
摘要： A method for optical chirp-free optical polarization modulation includes dividing a data modulated optical signal into a first optical path and a second optical path, using a Mach-Zehnder intensity modulator in the first optical path for imparting a π phase difference between adjacent symbols of the data modulated optical signal in the first optical path, adjusting a delay and amplitude of symbols of the data modulated optical signal in the second path so that the symbols in the first path and the symbols in the second path are synchronized and have substantially equal power levels, and combining the first and second optical paths so that symbols from the first and second optical paths are in orthogonal polarizations.
摘要翻译：一种用于无啁啾光学偏振调制的方法包括：使用第一光路中的马赫 - 曾德尔强度调制器将数据调制光信号划分成第一光路和第二光路，在第一光路中的数据调制光信号的相邻符号之间的相位差，调整第二路径中的数据调制光信号的符号的延迟和幅度，使得第一路径中的符号和第二路径中的符号为同步并且具有基本上相等的功率电平，并且组合第一和第二光路，使得来自第一和第二光路的符号处于正交偏振。

84. 发明申请

US20120106983A1 OPTIMIZED NORMALIZED LEAST MEAN SQUARE PHASE ESTIMATION 有权
标题翻译：优化正规化最小均方相位估计
公开(公告)号：US20120106983A1
公开(公告)日：2012-05-03
申请号：US12938738
申请日：2010-11-03
申请人： Lei Xu , Shaoling Zhang , Ting Wang
发明人： Lei Xu , Shaoling Zhang , Ting Wang
IPC分类号： H04B10/06 , H03D1/06
CPC分类号： H04L27/223 , H04L1/0045 , H04L1/0057 , H04L27/2275 , H04L27/3836 , H04L2027/0055 , H04L2027/0067
摘要： Methods and systems for normalized least mean square phase estimation are shown that include receiving optical transmissions that include a modulated signal, determining a step size based on a signal-to-noise ratio (SNR) and a laser linewidth that provides a balance between convergence speed and precision, estimating phase error using the determined step size, derotating the modulated signal to remove the estimated phase error, and demodulating the derotated signal to produce a bitstream.
摘要翻译：示出了用于归一化的最小均方相位估计的方法和系统，其包括接收包括调制信号的光传输，基于信噪比（SNR）确定步长，以及提供收敛速度之间的平衡的激光线宽和精确度，使用所确定的步长估计相位误差，解调调制信号以去除估计的相位误差，以及解调解旋信号以产生比特流。

85. 发明授权

US08140934B2 LDPC-coded multilevel modulation scheme 有权
标题翻译： LDPC编码多电平调制方案
公开(公告)号：US08140934B2
公开(公告)日：2012-03-20
申请号：US12242205
申请日：2008-09-30
申请人： Ivan Djordjevic , Ting Wang , Lei Xu
发明人： Ivan Djordjevic , Ting Wang , Lei Xu
IPC分类号： H03M13/00
CPC分类号： H04B10/516 , H03M13/255 , H04B10/2569 , H04B10/541 , H04B10/61 , H04L1/0041 , H04L1/0057 , H04L1/0058 , H04L1/0065 , H04L1/0071 , H04L1/02
摘要： A PMD compensation scheme suitable for use in multilevel block-coded modulation schemes with coherent detection.
摘要翻译：适用于具有相干检测的多级块编码调制方案的PMD补偿方案。

86. 发明授权

US08000604B2 Orthogonal frequency division multiple access (OFDMA) based passive optical network (PON) architecture and its extension to long distance 有权
标题翻译：基于正交频分多址（OFDMA）的无源光网络（PON）架构及其对长距离的扩展
公开(公告)号：US08000604B2
公开(公告)日：2011-08-16
申请号：US12039981
申请日：2008-02-29
申请人： Dayou Qian , Junqiang Hu , Jianjun Yu , Philip Nan Ji , Lei Xu , Ting Wang , Milorad Cvijetic , Toshihiko Kusano
发明人： Dayou Qian , Junqiang Hu , Jianjun Yu , Philip Nan Ji , Lei Xu , Ting Wang , Milorad Cvijetic , Toshihiko Kusano
IPC分类号： H04J14/02
CPC分类号： H04L5/023 , H04J14/0226 , H04J14/0227 , H04J14/0246 , H04J14/0247 , H04J14/025 , H04J14/0252 , H04J14/0282 , H04J14/0298 , H04L5/0007
摘要： A passive optical network (PON) device, system and method include an optical line terminal (OLT) receiver configured to receive multiple signals at different wavelengths simultaneously and enable multiple transmitters to operate at the same time during one upstream time slot. The optical line terminal employs Orthogonal Frequency Division Multiple Access (OFDMA) to transparently support a plurality of applications and enable dynamic bandwidth allocation among these applications where the bandwidth is allocated in two dimensional frequency and time space.
摘要翻译：无源光网络（PON）设备，系统和方法包括配置为同时接收不同波长的多个信号的光线路终端（OLT）接收机，并使得多个发射机能够在一个上行时隙同时进行操作。光线路终端使用正交频分多址（OFDMA）来透明地支持多个应用，并且在带宽被分配在二维频率和时间空间中的这些应用中实现动态带宽分配。

87. 发明申请

US20090285577A1 Optical Frontend for Integration of Optical and Wireless Networks 审中-公开
标题翻译：用于光和无线网络集成的光学前端
公开(公告)号：US20090285577A1
公开(公告)日：2009-11-19
申请号：US12119884
申请日：2008-05-13
申请人： Jianjun Yu , Philip Nan Ji , Lei Xu , Ting Wang
发明人： Jianjun Yu , Philip Nan Ji , Lei Xu , Ting Wang
IPC分类号： H04J14/02
CPC分类号： H04J14/0298 , H04J14/02 , H04J14/0282 , H04J14/0286
摘要： Data is transmitted by radio over fiber in a wavelength division multiplex optical transmission system. Data is transmitted over a single optical channel by directly modulating a single wavelength laser with a baseband data signal. Multiple single wavelength laser beams are multiplexed into a single multi-wavelength laser beam. All of the single optical channels are up-converted to RF frequencies by modulating the intensity of the multi-wavelength laser beam with an RF carrier.
摘要翻译：数据通过光纤通过波分复用光传输系统传输。通过用基带数据信号直接调制单个波长激光器，通过单个光通道传输数据。多个单波长激光束被复用成单个多波长激光束。通过用RF载体调制多波长激光束的强度，所有单个光通道被上变频到RF频率。

88. 发明申请

US20080253768A1 High Bit Rate Packet Generation with High Spectral Efficiency in an Optical Network 审中-公开
标题翻译：在光网络中具有高光谱效率的高比特率数据包生成
公开(公告)号：US20080253768A1
公开(公告)日：2008-10-16
申请号：US12060351
申请日：2008-04-01
申请人： Jianjun Yu , Philip Nan Ji , Lei Xu , Ting Wang
发明人： Jianjun Yu , Philip Nan Ji , Lei Xu , Ting Wang
IPC分类号： H04J14/00
CPC分类号： H04J14/0227 , H04B10/5165 , H04B10/54 , H04B10/5561 , H04J14/0246 , H04J14/0279 , H04L5/0005 , H04L5/0044 , H04L5/0053 , H04L27/02
摘要： Optical packets are generated by generating a first optical beam with a first wavelength and a second optical beam with a second optical beam. The first optical beam is modulated with a payload signal and then filtered to reduce the bandwidth of the signal. The second optical beam is modulated with a label signal. The filtered modulated first optical beam and modulated second optical beam are combined to generate a dual-wavelength optical beam.
摘要翻译：通过产生具有第一波长的第一光束和具有第二光束的第二光束来产生光学分组。用有效载荷信号调制第一个光束，然后滤波以减少信号的带宽。用标签信号调制第二光束。经过滤波的调制的第一光束和调制的第二光束被组合以产生双波长光束。

89. 发明申请

US20080240736A1 Inter-Symbol Interference-Suppressed Colorless DPSK Demodulation 审中-公开
标题翻译：符号间干扰抑制无色DPSK解调
公开(公告)号：US20080240736A1
公开(公告)日：2008-10-02
申请号：US11692432
申请日：2007-03-28
申请人： Philip Nan Ji , Lei Xu , Ting Wang , Shuji Murakami , Tsutomu Tajima , Yutaka Yano
发明人： Philip Nan Ji , Lei Xu , Ting Wang , Shuji Murakami , Tsutomu Tajima , Yutaka Yano
IPC分类号： H04B10/06
CPC分类号： H04B10/677
摘要： An optical device includes an interferometer for a received optical differential phase shift keying DPSK signal, and an equalizer integrated with the interferometer in a manner for reducing from optical filtering effects an interference by signal bits of the DPSK signal with signal bits of a contiguous DPSK signal. The interferometer is a Michelson delay interferometer type, but can also be a Mach-Zehnder delay interferometer type on fiber, waveguide or other optical structure. The equalizer is a Fabry-Perot type equalizer, but can be a ring resonator type or a fiber based equalizer.
摘要翻译：光学装置包括用于接收的光学差分相移键控DPSK信号的干涉仪，以及与干涉仪集成的均衡器，以减少光学滤波的方式，利用DPSK信号的信号位与相邻DPSK信号的信号位的干扰。干涉仪是迈克尔逊延迟干涉仪型号，但也可以是光纤，波导或其他光学结构上的马赫 - 曾德延迟干涉仪。均衡器是法布里 - 珀罗型均衡器，但可以是环形谐振器型或基于光纤的均衡器。

90. 发明申请

US20070166054A1 Optical Communication System and Method for Generating Dark Return-to-Zero and DWDM Optical MM-Wave Generation for ROF Downstream Link Using Optical Phase Modulator and Optical Interleaver 失效
标题翻译：用于通过光相位调制器和光交错器产生ROF下行链路的深度归零和DWDM光学MM波生成的光通信系统和方法
公开(公告)号：US20070166054A1
公开(公告)日：2007-07-19
申请号：US11621765
申请日：2007-01-10
申请人： Jianjun Yu , Lei Xu , Philip Ji , Ting Wang
发明人： Jianjun Yu , Lei Xu , Philip Ji , Ting Wang
IPC分类号： H04B10/04
CPC分类号： H04B10/508 , H04B10/2575 , H04B10/505 , H04J14/02 , H04J14/0256
摘要： A method of generating a dark-RZ pulse in an optical communications system with a dual-arm modulator by setting a direct current bias on the modulator to a specific value such that an output optical power from the modulator achieves a maximum value when the RF signals on the first and second arms of the modulator are off and maintaining the direct current bias at the specific value and applying RF signals to the first and second arms of the modulator and delaying one of the RF signals applied to one of the first and second arms relative to the other of the RF signals such that a dark-RZ pulse is generated with a duty cycle based on the delay. Another aspect of the invention provides a method for generating dense wave division multiplexing (DWDM) optical mm-waves in an optical transmission system by phase modulated DWDM optical signal and applying the phase modulated DWDM optical signal to an input port of an optical interleaver, the optical interleaver having a specified bandwidth to suppress the optical carriers and convert the DWDM optical signal to DWDM optical mm-waves; and amplifying the DWDM optical mm-waves and transmitting the DWDM optical mm-waves over single mode fiber (SMF).
摘要翻译：一种在具有双臂调制器的光通信系统中通过将调制器上的直流偏置设置为特定值来产生暗RZ脉冲的方法，使得来自调制器的输出光功率在RF信号在调制器的第一和第二臂处关闭并将直流偏压保持在特定值并且将RF信号施加到调制器的第一和第二臂并且延迟施加到第一和第二臂之一的RF信号之一相对于RF信号中的另一个，使得以基于延迟的占空比产生暗RZ脉冲。本发明的另一方面提供了一种通过相位调制DWDM光信号在光传输系统中产生密集波分复用（DWDM）光学毫米波的方法，并将相位调制的DWDM光信号应用于光交织器的输入端口，具有指定带宽的光交错器以抑制光载波并将DWDM光信号转换为DWDM光学毫米波; 并放大DWDM光学毫米波，并通过单模光纤（SMF）传输DWDM光学毫米波。

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