公开(公告)号：US08463121B2

公开(公告)日：2013-06-11

申请号：US12902801

申请日：2010-10-12

Applicant: Lei Xu ,  Shaoliang Zhang ,  Jianjun Yu ,  Ting Wang

Inventor： Lei Xu ,  Shaoliang Zhang ,  Jianjun Yu ,  Ting Wang

IPC: H04B10/08 ,  H04B10/06

CPC classification number: H04B10/611 ,  H04B10/60 ,  H04B10/6164 ,  H04B10/6165

Abstract: Methods and systems for receiving an optical signal using cascaded frequency offset estimation. Coherently detecting an optical signal includes compensating for a coarse laser frequency offset between a transmitting laser and a local oscillator laser by determining a maximum phase error (MPE) in the optical signal, compensating for a residual laser frequency offset between the transmitting laser and the local oscillator laser, and decoding data stored in the optical signal.

Abstract translation: 使用级联频偏估计接收光信号的方法和系统。 相干检测光信号包括通过确定光信号中的最大相位误差（MPE）来补偿发射激光器和本地振荡器激光器之间的粗激光频率偏移，补偿发射激光器和局部振荡器之间的残余激光频率偏移 振荡器激光器和解码存储在光信号中的数据。

公开(公告)号：US08358936B2

公开(公告)日：2013-01-22

申请号：US12562251

申请日：2009-09-18

Applicant: Jianjun Yu ,  Lei Xu ,  Dayou Qian ,  Ting Wang

Inventor： Jianjun Yu ,  Lei Xu ,  Dayou Qian ,  Ting Wang

IPC: H04B10/04 ,  H04B10/12

CPC classification number: H04B10/50

Abstract: An optical apparatus includes a quadrature phase shift keying modulator for generating a non-return-to-zero quadrature phase shift keyed NRZ-QPSK signal from a received lightwave, the modulator being driven by a radio frequency RF signal, an intensity modulator for carving the NRZ-QPSK signal to return-to-zero RZ pulses with a different duty cycle than that of the NRZ-QPSK, the intensity modulator being driven by a radio frequency RF clock signal to change the NRZ-QPSK to an RZ-QPSK signal, and an optical filter with a narrow band for filtering the signal from the intensity modulator to increase optical power that is useable by an optical digital coherent detection system.

Abstract translation: 光学装置包括：正交相移键控调制器，用于从接收到的光波产生不归零正交相移键控的NRZ-QPSK信号，调制器由射频RF信号驱动;强度调制器，用于雕刻 NRZ-QPSK信号以与NRZ-QPSK的占空比不同的占空比的归零RZ脉冲，强度调制器由射频RF时钟信号驱动，以将NRZ-QPSK改变为RZ-QPSK信号， 以及具有窄带的滤光器，用于对来自强度调制器的信号进行滤波，以增加可由光学数字相干检测系统使用的光功率。

公开(公告)号：US08184731B2

公开(公告)日：2012-05-22

申请号：US12372378

申请日：2009-02-17

Applicant: Dayou Qian ,  Jianjun Yu ,  Ting Wang

Inventor： Dayou Qian ,  Jianjun Yu ,  Ting Wang

IPC: H04L5/12

CPC classification number: H04L27/233

Abstract: A system and method to adjust the symbol constellation used to de-map a signal in an optical coherent communications system. A feedback de-mapper adjustment module is configured to compare average Error Vector Magnitude and Bit Error Ratio to a pre-defined table to determine when a constellation de-mapper mismatch occurs. The feedback de-mapper adjustment module then rotates the de-mapper constellation in order to compensate for phase drift.

Abstract translation: 一种用于调整用于在光学相干通信系统中去映射信号的符号星座的系统和方法。 反馈解映射器调整模块被配置为将平均误差矢量幅度和误码率与预定义的表进行比较，以确定何时发生星座解映射器失配。 反馈解映射器调整模块随后旋转去映射器星座以便补偿相位漂移。

公开(公告)号：US08000604B2

公开(公告)日：2011-08-16

申请号：US12039981

申请日：2008-02-29

Applicant: Dayou Qian ,  Junqiang Hu ,  Jianjun Yu ,  Philip Nan Ji ,  Lei Xu ,  Ting Wang ,  Milorad Cvijetic ,  Toshihiko Kusano

Inventor： Dayou Qian ,  Junqiang Hu ,  Jianjun Yu ,  Philip Nan Ji ,  Lei Xu ,  Ting Wang ,  Milorad Cvijetic ,  Toshihiko Kusano

IPC: H04J14/02

CPC classification number: H04L5/023 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0282 ,  H04J14/0298 ,  H04L5/0007

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07965947B2

公开(公告)日：2011-06-21

申请号：US11867090

申请日：2007-10-04

Applicant: Jianjun Yu ,  Yuanqiu Luo ,  Ting Wang

Inventor： Jianjun Yu ,  Yuanqiu Luo ,  Ting Wang

IPC: H04B10/04

CPC classification number: H04J14/0282 ,  H04B10/2587 ,  H04B10/272

Abstract: An optical system and method includes a source-free optical network unit coupled to an optical fiber for receiving an original carrier signal with downstream data over the optical fiber. The optical network unit includes a modulator configured to remodulate the original carrier signal with upstream data to produce an upstream data signal for transmission back down the optical fiber in a direction opposite to a direction in which that original carrier signal was received.

Abstract translation: 光学系统和方法包括耦合到光纤的无源光网络单元，用于通过光纤接收具有下行数据的原始载波信号。 光网络单元包括调制器，其被配置为用上行数据对原始载波信号进行再调制，以产生上行数据信号，以便在与接收原始载波信号的方向相反的方向上向下传输光纤。

公开(公告)号：US20110020003A1

公开(公告)日：2011-01-27

申请号：US12789943

申请日：2010-05-28

Applicant: Jianjun Yu ,  Dayou Qian ,  Philip Nan Ji ,  Ting Wang

Inventor： Jianjun Yu ,  Dayou Qian ,  Philip Nan Ji ,  Ting Wang

IPC: H04J14/02 ,  H04B10/04

CPC classification number: H04B10/548 ,  H04J14/06

Abstract: A method for generating a 400 Gb/s single channel optical signal from multiple modulated subchannels includes carving respective modulated subchannels into return-to-zero RZ modulated subchannels having non-overlapping peaks with intensity modulators having a duty cycle less than 50%, and combining the subchannels into a single channel signal aggregating the bit rate of each of the subchannels. The subchannels are combined with a flat top optical component for increased subsequent receiver sensitivity.

Abstract translation: 用于从多个调制子信道生成400Gb / s单信道光信号的方法包括将具有非重叠峰值的相应调制子信道刻蚀成具有占空比小于50％的强度调制器的归零至零RZ调制子信道，以及组合 将子信道转换成单个信道信号，聚合每个子信道的比特率。 子通道与平顶光学部件组合，以增加后续的接收灵敏度。

公开(公告)号：US20100283653A1

公开(公告)日：2010-11-11

申请号：US12697111

申请日：2010-01-29

Applicant: Fa Foster Dai ,  Jianjun Yu

Inventor： Fa Foster Dai ,  Jianjun Yu

IPC: H03M1/50

CPC classification number: G04F10/005

Abstract: A time to digital converter (TDC) is able to be utilized for measuring a time interval between two signals with a very fine time resolution, which is defined as the difference in propagation delay per stage between two rings or chains of delay stages. The Vernier ring TDC, Vernier TDC with comparator matrix or Vernier ring TDCs with comparator matrix comprise two rings or chains of delay stages with slightly different propagation delays per stage and a plurality of comparators for comparing two signals propagation along two rings or chains and determining when the lag signal passes the lead signal. The lead and lag signal are initiated by two events and are each fed into a separate one the first stages of one of the specified rings or chains. The comparators are able to be organized in a comparator matrix in order to occupy less space and permit reuse. As a result, the input time interval (the time between the two initiating events) is able to be measured through the product of the time resolution and the number of stages through which the two signals propagated.

Abstract translation: 时间数字转换器（TDC）能够用于测量具有非常精细时间分辨率的两个信号之间的时间间隔，其被定义为两个环或延迟级链之间的每级传播延迟的差异。 具有比较器矩阵的游标环TDC或具有比较器矩阵的游标环TDC的游标TDC包括两个延迟级的环或链，每级具有略微不同的传播延迟，以及用于比较两个信号沿着两个环或链进行传播的多个比较器， 滞后信号通过引导信号。 引导和滞后信号由两个事件引发，并且分别被馈送到指定的环或链中的一个的第一阶段的单独的一个。 比较器能够被组织在比较器矩阵中，以占用较少的空间并允许重用。 结果，输入时间间隔（两个启动事件之间的时间）能够通过时间分辨率和传播两个信号的级数的乘积来测量。

公开(公告)号：US20100046962A1

公开(公告)日：2010-02-25

申请号：US12546250

申请日：2009-08-24

Applicant: Jianjun Yu

Inventor： Jianjun Yu

IPC: H04B10/00

CPC classification number: H04B10/90 ,  H04B10/2575

Abstract: An optical system for providing all-optical up-conversion of a baseband signal including an all-optical up-converter responsive to baseband signals to provide corresponding dual sideband signals about a suppressed optical carrier, said dual sideband signals each having the same polarization direction, being phase locked, having the same optical power and having a fixed frequency spacing; and an optical filter for filtering the carrier signals and providing wavelength division multiplexed signals without optical carriers. In a preferred embodiment, the all-optical up-converter includes an intensity modulator for generating two pump lightwaves that are carrier suppressed in response to the intensity modulator receiving a laser light source and being driven by an RF signal, wherein the intensity modulator is DC biased at a null point, an optical combiner for combining the baseband signal and the two pump lightwaves, a nonlinear medium for four wave mixing the baseband signal and two pump lightwaves to generate the baseband signal and corresponding dual sideband signals, and an optical interleaver for removing the baseband signal and two pump lightwaves to provide said sideband signals about the suppressed optical carrier.

Abstract translation: 一种光学系统，用于响应于基带信号提供包括全光上变频器的基带信号的全光上变换，以提供关于被抑制的光载波的对应的双边带信号，所述双边带信号各自具有相同的偏振方向， 具有相同的光功率并具有固定的频率间隔; 以及用于对载波信号进行滤波并提供无光载波的波分复用信号的滤光器。 在一个优选实施例中，全光上变换器包括一个强度调制器，用于产生两个泵浦光波，该两个波浪波响应于接收激光光源并由RF信号驱动的强度调制器被抑制，其中强度调制器是DC 偏置在零点，用于组合基带信号和两个泵浦光波的光组合器，用于四波混频基带信号和两个泵浦光波的非线性介质，以产生基带信号和相应的双边带信号，以及用于 去除基带信号和两个泵浦光波，以提供关于被抑制的光载波的所述边带信号。

公开(公告)号：US20090285577A1

公开(公告)日：2009-11-19

申请号：US12119884

申请日：2008-05-13

Applicant: Jianjun Yu ,  Philip Nan Ji ,  Lei Xu ,  Ting Wang

Inventor： Jianjun Yu ,  Philip Nan Ji ,  Lei Xu ,  Ting Wang

IPC: H04J14/02

CPC classification number: H04J14/0298 ,  H04J14/02 ,  H04J14/0282 ,  H04J14/0286

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20090067839A1

公开(公告)日：2009-03-12

申请号：US12044417

申请日：2008-03-07

Applicant: Yuanqiu Luo ,  Si Yin ,  Jianjun Yu ,  Lei Zong

Inventor： Yuanqiu Luo ,  Si Yin ,  Jianjun Yu ,  Lei Zong

IPC: H04J14/00

CPC classification number: H04J14/0282 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0298 ,  H04L67/1097 ,  H04Q11/0067 ,  H04Q2011/0069

Abstract: A storage area network extension, network and method include a storage terminal coupled to a remote node. The remote node is connected to a passive optical network (PON) for transferring data signals in the PON and storage signals to/from the storage terminal by employing subcarrier channels in the PON to enable concurrent bidirectional transfer of the data and the storage signals. A storage area network is coupled to the storage terminal and configured to store and retrieve the storage signals for transfer over the PON.

Abstract translation: 存储区域网络扩展，网络和方法包括耦合到远程节点的存储终端。 远程节点连接到无源光网络（PON），用于通过在PON中采用子载波信道来传送PON中的数据信号和存储信号到存储终端，以实现数据和存储信号的并发双向传输。 存储区域网络耦合到存储终端并且被配置为存储和检索用于在PON上传送的存储信号。