公开(公告)号：US08138958B2

公开(公告)日：2012-03-20

申请号：US12697111

申请日：2010-01-29

Applicant: Fa Foster Dai ,  Jianjun Yu

Inventor： Fa Foster Dai ,  Jianjun Yu

IPC: H03M1/12

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：US08098989B2

公开(公告)日：2012-01-17

申请号：US12437706

申请日：2009-05-08

Applicant: Jianjun Yu

Inventor： Jianjun Yu

IPC: H04J14/06 ,  H04B10/04

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，用于组合第二和第三光波的极化保持; 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：US20110069964A1

公开(公告)日：2011-03-24

申请号：US12562353

申请日：2009-09-18

Applicant: Jianjun Yu ,  Ting Wang

Inventor： Jianjun Yu ,  Ting Wang

IPC: H04B10/00

CPC classification number: H04B10/90 ,  H04B10/25759

Abstract: An optical wireless network includes an optical coupler for diverting received millimeter-wave signals comprised of an optical carrier and second order sidebands into multiple transmission paths; a downstream optical path being one of the multiple transmission paths and including an optical filter for filtering passing through the optical carrier with a single sideband, a converter for converting the optical carrier and single sideband to a corresponding electrical signal for amplification and broadcast transmission from an antenna; and an upstream path being one of the multiple transmission paths and having a filter for passing through the optical carrier only from the mm-wave signals and an intensity modulator driven by data received over the antenna to modulate the optical carrier for optical transmission to a receiving destination.

Abstract translation: 光无线网络包括用于将接收到的由光载波和二阶边带构成的毫米波信号转换成多个传输路径的光耦合器; 下行光路是多个传输路径之一，并且包括用于通过单个边带通过光载波的滤波器的滤光器，用于将光载波和单边带转换为相应的电信号的转换器，用于放大和广播传输 天线; 并且上游路径是多个传输路径中的一个，并且具有仅从mm波信号通过光载波的滤波器和由天线接收的数据驱动的强度调制器，以将用于光传输的光载波调制到接收 目的地。

公开(公告)号：US20100329696A1

公开(公告)日：2010-12-30

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: H04B10/04

CPC classification number: H04B10/5053 ,  H04B10/541

Abstract: An optical transmitter including a dividing optical coupler for dividing a lightwave onto optical paths; a first optical modulator in a first of the optical paths and driven by an I component of a first signal and a I component of a second signal for modulating the lightwave, a DC bias of the first optical modulator being at a quadrature point; a second optical modulator in a second of the optical paths and driven by a Q component of the first signal and a Q component of the second signal for modulating the lightwave, a DC bias of the second optical modulator being at the quadrature point; a phase shifter for generating a 90 degree phase shift in the Q components of the first and second signals that are modulated by the second optical coupler; 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: 一种光发射机，包括用于将光波分解成光路的分光光耦合器; 在第一光路中的由第一信号的I分量和用于调制光波的第二信号的I分量驱动的第一光调制器，第一光调制器的DC偏置处于正交点; 在第二光路中的第二光调制器，由第一信号的Q分量和第二信号的Q分量驱动，用于调制光波，第二光调制器的DC偏置处于正交点; 移相器，用于产生由第二光耦合器调制的第一和第二信号的Q分量中的90度相移; 以及组合光耦合器，用于组合来自第一光耦合器的调制光波和用于产生正交幅度调制信号的第一和第二信号的相移Q分量。

公开(公告)号：US20100247104A1

公开(公告)日：2010-09-30

申请号：US12698688

申请日：2010-02-02

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: H04B10/508 ,  H04B10/2575 ,  H04B10/505 ,  H04J14/02 ,  H04J14/0256

Abstract: 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).

Abstract translation: 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。

公开(公告)号：US20090290877A1

公开(公告)日：2009-11-26

申请号：US12124402

申请日：2008-05-21

Applicant: Jianjun Yu ,  Ting Wang ,  Junqiang Hu

Inventor： Jianjun Yu ,  Ting Wang ,  Junqiang Hu

IPC: H04J14/02

CPC classification number: H04B10/0795 ,  H04L27/2602

Abstract: A method includes coupling an optical signal upconverted to a higher frequency and a digital signal having a bit rate similar to that of a subchannel of the upconverted optical signal, and obtaining, responsive to the coupling, a transmission signal with an optical carrier frequency carrying the digital signal and subchannels about the optical carrier frequency carrying the upconverted optical signal, the bit rate of the optical carrier being similar to that of the subchannels. In a preferred embodiment, the coupling includes electrically power coupling the upconverted optical signal with the digital signal, and modulating the coupled optical carrier frequency carrying the digital signal and subchannels about the optical carrier frequency carrying the upconverted optical signal.

Abstract translation: 一种方法包括将上变频到较高频率的光信号和具有与上变频光信号的子信道的比特率相似的比特率的数字信号耦合，并且响应于耦合获得具有携带 关于携带上变频光信号的光载波频率的数字信号和子信道，光载波的比特率与子信道的比特率相似。 在优选实施例中，耦合包括将上变频的光信号与数字信号进行电功率耦合，以及调制载有数字信号的耦合的光载波频率和携带上变频的光信号的光载波频率的子信道。

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：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：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。