公开(公告)号：US20140105615A1

公开(公告)日：2014-04-17

申请号：US14113012

申请日：2012-04-25

申请人： Hung-Chang Chien ,  Jianjun Yu

发明人： Hung-Chang Chien ,  Jianjun Yu

IPC分类号： H04B10/548

CPC分类号： H04B10/548

摘要： A method and apparatus for generating sub-carriers is disclosed. Coherent optical sub-carriers with sub-carrier spacing are generated for carrying an orthogonal frequency division multiplexed (OFDM) signal. Multiple peaks are generated by cascading multiple phase modulators driven by different radio frequency sources.

摘要翻译： 公开了一种用于生成副载波的方法和装置。 产生具有副载波间隔的相干光子载波，用于承载正交频分复用（OFDM）信号。 通过级联由不同射频源驱动的多个相位调制器产生多个峰值。

公开(公告)号：US20140015258A1

公开(公告)日：2014-01-16

申请号：US13981201

申请日：2012-01-20

申请人： Darek Barczynski ,  Hongying Wang ,  Jianjun Yu ,  Dikran Ghorghorian

发明人： Darek Barczynski ,  Hongying Wang ,  Jianjun Yu ,  Dikran Ghorghorian

IPC分类号： E05B65/12

CPC分类号： E05B83/24 ,  B60J5/02 ,  E05B77/08 ,  E05B77/38 ,  Y10S292/14 ,  Y10T292/0949

摘要： A hood latch having an extra-long fishmouth for enabling a vehicle hood to deflect downwardly upon impact, such as when hit by a pedestrian in a frontal crash. To prevent this deflection when the hood is slammed shut in ordinary use, a stop lever is pivotally mounted to the latch housing. The stop lever features first and second arms defining a slot therein. One arm has a proboscis thereon and is biased to align the slot with the fishmouth, with the proboscis jutting into the fishmouth. The proboscis receives an impact from the striker and rotates the stop lever to a blocking position wherein the non-proboscis arm intercepts the striker and prevents it from reaching the bottom end of the fishmouth. In the closed position the ratchet retains the striker at an intermediate depth in the fishmouth, enabling the striker to travel toward the bottom end thereof.

摘要翻译： 具有超长鱼嘴的发动机罩闩锁，用于使车辆罩在冲击时向下偏转，例如在正面碰撞中被行人撞击时。 为了防止在通常情况下关闭罩盖时的这种偏转，止动杆可枢转地安装在闩锁壳体上。 止动杆具有在其中限定槽的第一和第二臂。 一只手臂上有一只长鼻子，并且被偏置以使狭槽与鱼嘴对齐，而长鼻子突出到鱼嘴中。 长鼻子从冲击器接收冲击并将止动杆旋转到阻挡位置，其中非长臂臂拦截撞针并防止其到达鱼嘴的底端。 在关闭位置，棘轮将撞针保持在鱼嘴中的中间深度，使得撞针能够朝向其底端行进。

公开(公告)号：US20120321324A1

公开(公告)日：2012-12-20

申请号：US13495368

申请日：2012-06-13

申请人： Jianjun Yu ,  Ming-Fang Huang

发明人： Jianjun Yu ,  Ming-Fang Huang

IPC分类号： H04B10/04

CPC分类号： H04B10/541

摘要： The present method is for generating a 4-level optical signal and it includes providing a continuous wave CW optical source; modulating the CW optical source with a first intensity modulator driven by a binary electrical signal a n Gbits/s to generate an optical signal; employing a second intensity modulator as a pulse carving modulator that is driven by an RF signal at n GHz thereby generating a 4 level optical signal for subsequent detection by a receiver.

摘要翻译： 本发明的方法是产生4级光信号，包括提供连续波CW光源; 用由二进制电信号驱动的第一强度调制器nGbits / s调制CW光源以产生光信号; 采用第二强度调制器作为由n GHz的RF信号驱动的脉冲雕刻调制器，从而生成4级光信号，用于接收机的后续检测。

公开(公告)号：US20120230688A1

公开(公告)日：2012-09-13

申请号：US13411191

申请日：2012-03-02

申请人： Jianjun Yu

发明人： Jianjun Yu

IPC分类号： H04J14/06 ,  H04J14/00

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

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20120106973A1

公开(公告)日：2012-05-03

申请号：US13284561

申请日：2011-10-28

申请人： Jianjun Yu

发明人： Jianjun Yu

IPC分类号： H04B10/10 ,  H04B10/02

CPC分类号： H04B10/90 ,  H04B2210/006

摘要： Embodiments of the present invention pertain to optical wireless architecture. More particularly, certain embodiments of the invention pertain to a novel method and apparatus to generate millimeter-wave signals with simple and/or low cost architecture. Simple millimeter-wave generation and dispersion-tolerant transmission is based on photonic mixing of two free-running lightwaves and self-mixing down-conversion. More particularly, heterodyne mixing of two free run lightwaves is achieved, wherein one lightwave is modulated by an external modulator driven by electrical data as one of the side-bands of a millimeter-wave signal. Optical to electrical conversion is performed and the millimeter-wave signal is broadcasted by a high-frequency antenna to a receiving side having a local oscillator with self-mixing architecture to down-convert the radio frequency to its baseband form.

摘要翻译： 本发明的实施例涉及光无线架构。 更具体地，本发明的某些实施例涉及以简单和/或低成本架构产生毫米波信号的新颖方法和装置。 简单的毫米波生成和容差传输是基于两个自由运行的光波的光子混合和自混合下变频。 更具体地，实现了两个自由运行的光波的外差混合，其中一个光波由作为毫米波信号的边带之一的电数据驱动的外部调制器调制。 执行光电转换，并且将毫米波信号由高频天线广播到具有自混合架构的本地振荡器的接收侧，以将射频下变频到其基带形式。

公开(公告)号：US08138958B2

公开(公告)日：2012-03-20

申请号：US12697111

申请日：2010-01-29

申请人： Fa Foster Dai ,  Jianjun Yu

发明人： Fa Foster Dai ,  Jianjun Yu

IPC分类号： H03M1/12

CPC分类号： G04F10/005

摘要： 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.

摘要翻译： 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

申请人： Jianjun Yu

发明人： Jianjun Yu

IPC分类号： H04J14/06 ,  H04B10/04

CPC分类号： H04J14/06 ,  G02F1/3515 ,  G02F2002/006

摘要： 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.

摘要翻译： 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：US20090279891A1

公开(公告)日：2009-11-12

申请号：US12437706

申请日：2009-05-08

申请人： Jianjun Yu

发明人： Jianjun Yu

IPC分类号： H04J14/06

CPC分类号： H04J14/06 ,  G02F1/3515 ,  G02F2002/006

摘要： 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.

摘要翻译： 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：US06814376B2

公开(公告)日：2004-11-09

申请号：US10214532

申请日：2002-08-08

申请人： Jianjun Yu ,  Keisuke Kojima

发明人： Jianjun Yu ,  Keisuke Kojima

IPC分类号： G02B600

CPC分类号： H04B10/505 ,  G02F1/365 ,  G02F2201/02 ,  G02F2203/26 ,  H04B10/5051 ,  H04B10/508

摘要： 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.

摘要翻译： 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。