公开(公告)号：US20090279891A1

公开(公告)日：2009-11-12

申请号：US12437706

申请日：2009-05-08

Applicant: Jianjun Yu

Inventor： Jianjun Yu

IPC: H04J14/06

CPC classification number: H04J14/06 ,  G02F1/3515 ,  G02F2002/006

Abstract: An apparatus includes a first laser source for providing a first lightwave; a first optical coupler that is polarization maintaining for dividing the first lightwave into first and second optical carrier lightwaves; first and second modulators for modulating respective ones of the first and second carrier lightwaves with information; a polarization beam combiner for combining the modulated first and second carrier lightwaves which generates a polarization multiplexing optical signal; second and third lasers for providing second and third lightwaves whose wavelengths are one of both longer than that of the first lightwave and shorter than that of the first lightwave, a second optical coupler that is polarization maintaining for combining the second and third lightwaves; and a third optical coupler for combining the modulated first and second carrier lightwaves from the polarization beam combiner and the combined second and third lightwaves out of the second optical coupler for transmission over an optical medium.

Abstract translation: 一种装置包括用于提供第一光波的第一激光源; 第一光耦合器，其是用于将第一光波分割成第一和第二光载波光的偏振保持; 第一和第二调制器，用于用信息调制第一和第二载波光波中的相应的一个; 偏振光束组合器，用于组合产生偏振复用光信号的调制的第一和第二载波光波; 第二和第三激光器，用于提供第二和第三光波，其波长比第一光波的波长都长于第一光波的波长，并且比第一光波的波长短;第二光耦合器，其是用于组合第二和第三光波的保持极化; 以及第三光耦合器，用于将来自偏振光束组合器的调制的第一和第二载波光波与第二光耦合器中的组合的第二和第三光波组合，以在光学介质上传输。

公开(公告)号：US20090059351A1

公开(公告)日：2009-03-05

申请号：US12050538

申请日：2008-03-18

Applicant: LEI XU ,  TING WANG ,  JIANJUN YU ,  PHILIP NAN JI ,  YUTAKA YANO

Inventor： LEI XU ,  TING WANG ,  JIANJUN YU ,  PHILIP NAN JI ,  YUTAKA YANO

IPC: G02F2/00

CPC classification number: H04B10/677 ,  H04L27/223 ,  H04L27/2331

Abstract: A demodulator and demodulation method includes an optical coupler configured to receive an input signal. The optical coupler couples the signal to an even number of branches. Each branch including at least one interferometer configured to split, combine and interfere with an optical signal from one of within the branch or from another branch. A common optical delay is disposed on one of every two branches between the optical coupler and the interferometer of the branch.

Abstract translation: 解调器和解调方法包括被配置为接收输入信号的光耦合器。 光耦合器将信号耦合到偶数个分支。 每个分支包括至少一个干涉仪，其构造成分离，组合和干扰来自分支内或另一分支之一的光信号。 在光耦合器和分支的干涉仪之间的每两个分支之一上设置常见的光学延迟。

公开(公告)号：US20090016739A1

公开(公告)日：2009-01-15

申请号：US11830987

申请日：2007-07-31

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

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

IPC: H04B10/00

CPC classification number: H04B10/25073

Abstract: A passive optical equalizer and a predistortion technique are employed to reduce pattern effect in optical signals which result from narrow filtering.

Abstract translation: 采用无源光学均衡器和预失真技术来减少由窄滤波引起的光信号中的图案效应。

公开(公告)号：US20080267630A1

公开(公告)日：2008-10-30

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: H04J14/00

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：US06814376B2

公开(公告)日：2004-11-09

申请号：US10214532

申请日：2002-08-08

Applicant: Jianjun Yu ,  Keisuke Kojima

Inventor： Jianjun Yu ,  Keisuke Kojima

IPC: G02B600

CPC classification number: H04B10/505 ,  G02F1/365 ,  G02F2201/02 ,  G02F2203/26 ,  H04B10/5051 ,  H04B10/508

Abstract: A short pulse generation system and method of generating a short pulse signal are provided. The system includes a fiber chain having an input for receiving an optical signal having a plurality of optical pulses. The fiber chain is nonlinear with respect to the optical signal and includes a first normal fiber segment having a relatively small chromatic parameter, a first abnormal fiber segment having a relatively large chromatic parameter coupled to an output of the first normal fiber segment, and a second abnormal fiber segment having a relatively small chromatic parameter coupled to an out of the first abnormal fiber segment. The system includes a filter stage coupled to an output of the fiber chain and that has a transparent wavelength selected to regenerate the signal. A short pulse signal is produced when the optical signal is coupled to the input.

Abstract translation: 提供了一种产生短脉冲信号的短脉冲发生系统和方法。 该系统包括具有用于接收具有多个光脉冲的光信号的输入的光纤链。 纤维链相对于光信号是非线性的，并且包括具有相对较小的色彩参数的第一正常光纤段，具有耦合到第一正常光纤段的输出的相对较大的色参数的第一异常光纤段， 具有耦合到第一异常纤维段外的相对较小的色参数的异常光纤段。 该系统包括耦合到光纤链的输出并且具有选择用于再生信号的透明波长的滤波器级。 当光信号耦合到输入端时产生短脉冲信号。

公开(公告)号：US09106343B2

公开(公告)日：2015-08-11

申请号：US13556928

申请日：2012-07-24

Applicant: Hung-Chang Chien ,  Jianjun Yu ,  Ze Dong

Inventor： Hung-Chang Chien ,  Jianjun Yu ,  Ze Dong

IPC: H04B10/04 ,  H04B10/12 ,  H04B10/50 ,  H04B10/516 ,  H04B10/556

CPC classification number: H04B10/5051 ,  H04B10/5053 ,  H04B10/5162 ,  H04B10/5561

Abstract: An optical signal transmitting system, comprising: an optical transmitter including one or more input terminals and an output terminal; and a temporal polarization interleaver including an input terminal and an output terminal, wherein the output terminal of the optical transmitter is communicatively coupled to the input terminal of the temporal polarization interleaver, wherein: the optical transmitter is configured to receive one or more input signals through its one or more input terminals, generate an output signal using the one or more input signals, the output signal including a x-polarized tributary and a y-polarized tributary that is pulse-to-pulse aligned with the x-polarized tributary, and transmit the output signal to the temporal polarization interleaver; and the temporal polarization interleaver is configured to receive the output signal from the optical transmitter and cause a predefined phase delay to one of the x-polarized tributary and the y-polarized tributary.

Abstract translation: 一种光信号传输系统，包括：光发射机，包括一个或多个输入端和输出端; 以及包括输入端和输出端的时间偏振交织器，其中所述光发送器的输出端通信地耦合到所述时间偏振交织器的输入端，其中：所述光发送器被配置为通过以下方式接收一个或多个输入信号： 其一个或多个输入端子使用一个或多个输入信号产生输出信号，该输出信号包括与x偏振支路脉冲对脉冲对准的x偏振支路和y偏振支路，以及 将输出信号发送到时间偏振交织器; 并且时间偏振交织器被配置为从光发射器接收输出信号，并且对x偏振支流和y偏振支路之一引起预定的相位延迟。

公开(公告)号：US08983297B2

公开(公告)日：2015-03-17

申请号：US13492775

申请日：2012-06-08

Applicant: Hung-Chang Chien ,  Jianjun Yu ,  Ze Dong

Inventor： Hung-Chang Chien ,  Jianjun Yu ,  Ze Dong

IPC: H04J14/02 ,  G02B6/26 ,  H04J14/00 ,  H04B10/516

CPC classification number: G02B6/26 ,  H04B10/516 ,  H04J14/00 ,  H04J14/02

Abstract: Methods and devices are provided to facilitate production of optical signals that exhibit reduced crosstalk noise and intersymbol interference. In some configurations, a multi-stage optical interleaver, including a first and a second optical interleaver, is used to process a first and a second set of input optical channels. The composite optical output of the multi-stage interleaver includes the first set of optical channels and the second set of optical channels, where each of the first and second set of input optical channels is processed once by the first optical interleaver and once by the second optical interleaver. As such, the first and second sets of input optical channels are each filtered twice using only two optical interleavers.

Abstract translation: 提供了方法和装置，以便于生产表现出减少的串扰噪声和符号间干扰的光信号。 在一些配置中，使用包括第一和第二光交织器的多级光交织器来处理第一和第二组输入光信道。 多级交织器的复合光输出包括第一组光通道和第二组光通道，其中第一和第二组输入光通道中的每一个由第一光交错器处理一次，一次由第二组 光学交织器。 这样，第一组和第二组输入光通道每个仅使用两个光交错器进行两次滤波。

公开(公告)号：US08897645B2

公开(公告)日：2014-11-25

申请号：US13991068

申请日：2010-12-01

Applicant: Jianjun Yu

Inventor： Jianjun Yu

IPC: H04J4/00 ,  H04L1/00 ,  H03M13/29 ,  H03M13/31 ,  H03M13/00 ,  H04L1/04 ,  H04L27/26 ,  H04B10/04

CPC classification number: H04L1/0011 ,  H03M13/2957 ,  H03M13/31 ,  H03M13/6362 ,  H04L1/0013 ,  H04L1/0041 ,  H04L1/0066 ,  H04L1/0068 ,  H04L1/04 ,  H04L27/2634 ,  H04L27/2697

Abstract: A system and method for improving receiver sensitivity of an DD-OFDM system without using frequency guard band. The method having: interleaving input data to the DD-OFDM system to generate interleaved data; encoding the input data with a first recursive systematic convolutional code to generate a first recursive systematic convolutional encoded data; encoding the interleaved data with a second recursive systematic convolutional code to generate a second recursive systematic convolutional encoded data; puncturing the first recursive systematic convolutional encoded data and the second recursive systematic convolutional encoded data to generate a parity sequence; and combining the input data with the parity sequence to generate coded DD-OFDM data; wherein the parity sequence is generated by using different puncturing rates for different OFDM subcarriers, so as to obtain higher spectral efficiency.

Abstract translation: 一种用于在不使用频率保护频带的情况下改善DD-OFDM系统的接收机灵敏度的系统和方法。 该方法具有：将输入数据交织到DD-OFDM系统以产生交错数据; 用第一递归系统卷积码对输入数据进行编码，以产生第一递归系统卷积编码数据; 用第二递归系统卷积码对交错数据进行编码，以生成第二递归系统卷积编码数据; 刺穿第一递归系统卷积编码数据和第二递归系统卷积编码数据以产生奇偶校验序列; 并将输入数据与奇偶校验序列组合以产生编码的DD-OFDM数据; 其中通过对不同OFDM子载波使用不同的打孔率来生成奇偶校验序列，以便获得更高的频谱效率。

公开(公告)号：US08873970B2

公开(公告)日：2014-10-28

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: H04B10/04 ,  H04B10/12 ,  H04B10/548 ,  H04J14/06

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：US08761612B2

公开(公告)日：2014-06-24

申请号：US12562260

申请日：2009-09-18

Applicant: Jianjun Yu ,  Ting Wang ,  Dayou Qian

Inventor： Jianjun Yu ,  Ting Wang ,  Dayou Qian

IPC: H04B10/00

CPC classification number: H04B10/5053 ,  H04B10/541

Abstract: An optical transmitter includes a dividing optical coupler, a first optical modulator driven by an I component of a first signal and a I component of a second signal for modulating a lightwave, a DC bias of the first optical, a second optical modulator driven by a Q component of the first signal and a Q component of the second signal for modulating a lightwave, a DC bias of the second optical modulator, a phase shifter, and a combining optical coupler for combining the modulated lightwave from the first optical coupler and the phase shifted Q components of the first and second signals for generating a quadrature amplitude modulated signal.

Abstract translation: 光发射机包括分光光耦合器，由第一信号的I分量驱动的第一光调制器和用于调制光波的第二信号的I分量，第一光学器件的DC偏置，第二光调制器驱动的第二光调制器 第一信号的Q分量和用于调制光波的第二信号的Q分量，第二光调制器的DC偏置，移相器和组合光耦合器，用于组合来自第一光耦合器的调制光波和相位 用于产生正交幅度调制信号的第一和第二信号的移位Q分量。