公开(公告)号：US20080279556A1

公开(公告)日：2008-11-13

申请号：US12115046

申请日：2008-05-05

Applicant: Jianjun Yu ,  Yuanqiu Luo ,  Junqiang Hu ,  Ting Wang

Inventor： Jianjun Yu ,  Yuanqiu Luo ,  Junqiang Hu ,  Ting Wang

IPC: H04J14/02

CPC classification number: H04B10/2587 ,  H04J14/0282

Abstract: Data is transmitted between a central office and customer premises by a wavelength division multiplex passive optical network. Two laser beams with separate wavelengths are transmitted from the central office to an optical network unit in the customer premises. Both laser beams carry downstream data. One laser beam is intensity modulated by on/off keying. The other laser beam is phase modulated by differential phase shift keying, which maintains a constant optical intensity. The first laser beam is received by a first optical receiver, which demodulates the first downstream data. The second laser beam is split in two. One laser beam is sent to a second optical receiver, which demodulates the second downstream data. The other laser beam is sent to a reflective semiconductor amplifier, which modulates the beam with upstream data and transmits the beam back to a receiver in the central optical system.

Abstract translation: 数据通过波分复用无源光网络在中心局和客户驻地之间传输。 具有分离波长的两个激光束从中心局传输到客户驻地的光网络单元。 两个激光束都携带下行数据。 一个激光束通过开/关键控进行强度调制。 其他激光束通过差分相移键控进行相位调制，保持恒定的光强度。 第一激光束由第一光接收器接收，第一光接收器解调第一下行数据。 第二激光束分为两部分。 一个激光束被发送到第二光接收器，其解调第二下行数据。 另一个激光束被发送到反射半导体放大器，该反射半导体放大器利用上行数据对光束进行调制，并将光束传送回中央光学系统中的接收器。

公开(公告)号：US20080063396A1

公开(公告)日：2008-03-13

申请号：US11690926

申请日：2007-03-26

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

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

IPC: H04B10/24

CPC classification number: H04B10/5561 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/5162 ,  H04B10/5165

Abstract: An apparatus includes a generator for obtaining at least two lightwave carriers from a single lightwave source, at least two modulators for selectively varying the lightwave carriers according to respective data signals; and a coupler for combining the modulated lightwave carriers for optical transmission. The generator can be one of an optical carrier suppression or phase modulation. The apparatus can employ a filter for separating the lightwave carriers by a fixed wavelength spacing before selectively varying the lightwave carriers according to the respective data signals. In an exemplary embodiment of the invention, the respective data signals are two 50 Gbit/s differential quadrature phase key DQPSK signals, each 50 Gbit/s DQPSK signal including a first 25 Gbit/s data signal out of phase with a second 25 Gbit/s data signal for selectively varying a respective one of the two lightwave carriers, and the combined modulated lightwave carriers are a 100 Gbit/s DQPSK signal. Preferably, the apparatus includes a modulator for pulse shaping the lightwave carriers.

Abstract translation: 一种装置包括用于从单个光波源获得至少两个光波载波的发生器，至少两个用于根据相应数据信号选择性地改变光波载波的调制器; 以及用于组合用于光传输的调制光波载波的耦合器。 发生器可以是光载波抑制或相位调制之一。 根据相应的数据信号，在选择性地改变光波载波之前，该装置可以采用用于将光波载波分离固定波长间隔的滤波器。 在本发明的示例性实施例中，相应的数据信号是两个50Gbit / s的差分正交相位键DQPSK信号，每个50Gbit / s的DQPSK信号包括与第二25Gbit / s的第二25Gbit / s数据信号异相， 用于选择性地改变两个光波载波中的相应一个的数据信号，并且组合的调制的光波载波是100Gbit / s的DQPSK信号。 优选地，该装置包括用于对光波载波进行脉冲整形的调制器。

公开(公告)号：US20070292143A1

公开(公告)日：2007-12-20

申请号：US11761021

申请日：2007-06-11

Applicant: Jianjun Yu ,  Lei Xu ,  Ting Wang

Inventor： Jianjun Yu ,  Lei Xu ,  Ting Wang

IPC: H04B10/04

CPC classification number: H04B10/25754

Abstract: An apparatus includes multiple signal paths for optically converting an optical signal to multiples of the optical signal at different respective carrier frequencies for reducing interference between wireless transmissions of the multiples of the optical signal. Preferably, the converting includes a first modulator for modulating the optical signal into a first optical carrier and an initial first-order sideband signal with a frequency spacing twice that of the first optical carrier and a first interleaver for separating the first optical carrier and the initial first-order sideband signal. The converting also includes a second phase modulator for modulating the first optical carrier into a second optical carrier and a second first-order sideband signal with a frequency spacing twice that of the second optical carrier.

Abstract translation: 一种装置包括多个信号路径，用于将光信号光学地转换成不同相应载波频率处的光信号的倍数，以减少光信号的倍数的无线传输之间的干扰。 优选地，转换包括用于将光信号调制成第一光载波的第一调制器和具有两倍于第一光载波的频率间隔的初始一阶边带信号和用于分离第一光载波的初始交织器和初始 一阶边带信号。 转换还包括用于将第一光载波调制成第二光载波的第二相位调制器和频率间隔是第二光载波的频率间隔的第二一阶边带信号。

公开(公告)号：US20060071612A1

公开(公告)日：2006-04-06

申请号：US10543952

申请日：2004-01-14

Applicant: Paul Veldman ,  Bernhard Van Dijk ,  Jianjun Yu

Inventor： Paul Veldman ,  Bernhard Van Dijk ,  Jianjun Yu

IPC: H05B41/16

CPC classification number: H05B41/2828 ,  Y10S315/05 ,  Y10S315/07

Abstract: In a bride circuit comprising a lamp choke that might partially saturate during the ignition of the lamp, at least one of the switches is switched off when the amount of charge displaced through it in forward direction equals a predetermined value. Despite the partial paturation of the lamp choke the amplitude of the ignition voltage is thereby effectively controlled.

Abstract translation: 在包括在灯的点火期间可能部分饱和的灯扼流圈的新电路中，当正向移动的电荷量等于预定值时，至少一个开关被切断。 尽管灯扼流圈的部分校正，因此有效地控制了点火电压的幅度。

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。

公开(公告)号：US08582983B2

公开(公告)日：2013-11-12

申请号：US13411191

申请日：2012-03-02

Applicant: Jianjun Yu

Inventor： Jianjun Yu

IPC: H04B10/04

CPC classification number: H04J14/0298 ,  H04B10/506 ,  H04J14/0212 ,  H04J14/06 ,  H04L5/0008 ,  H04L27/0004 ,  H04L27/2096 ,  H04L27/2627 ,  H04L27/2697

Abstract: A method and system for generating multi-subcarriers is disclosed. Re-circulating frequency shifters—based on the frequency shifting in two cascading phase modulators—are used to generate 112 subcarriers with stable architecture since there is no direct current bias in phase modulators.

Abstract translation: 公开了一种用于产生多子载波的方法和系统。 基于两个级联相位调制器中的频移的再循环移频器被用于产生具有稳定架构的112个子载波，因为在相位调制器中没有直流偏置。