公开(公告)号：US07068936B2

公开(公告)日：2006-06-27

申请号：US10161335

申请日：2002-06-03

申请人： Stanley Pau ,  Jianjun Yu ,  Keisuke Kojima ,  Naresh Chand

发明人： Stanley Pau ,  Jianjun Yu ,  Keisuke Kojima ,  Naresh Chand

IPC分类号： H04J14/00

CPC分类号： H04J14/086 ,  H04J14/02 ,  H04J14/08 ,  H04Q11/0005 ,  H04Q2011/0011 ,  H04Q2011/0016 ,  H04Q2011/002 ,  H04Q2011/0024 ,  H04Q2011/0033 ,  H04Q2011/0045

摘要： Methods and apparatus for providing a time slot switch which performs switching in the optical domain without the need for O-E-O conversion is described. The time slot switching device of the present invention may be part of a large switching device capable of performing switching and other function on WDM, TDM and WDM signals which are time division multiplexed. An optical time slot switch implemented using a time slot demultiplexer, optical cross-connect, variable delay lines and time slot multiplexer are described. Frequency conversion may be performed on a per time slot basis in cases where time slot signals are switched between lines using different wavelengths. Wave division demultiplexers and multiplexers can be added to the basic time slot switch to provide support for WDM switching and switching of TDM signals which are transmitted using wave division multiplexing.

摘要翻译： 描述了提供在光域中进行切换而不需要O-E-O转换的时隙切换的方法和装置。 本发明的时隙切换装置可以是对时分复用的WDM，TDM和WDM信号进行切换等功能的大型交换装置的一部分。 描述了使用时隙解复用器，光交叉连接，可变延迟线和时隙多路复用器实现的光时隙交换机。 在使用不同波长的线路之间切换时隙信号的情况下，可以在每个时隙的基础上执行频率转换。 波分复用器和多路复用器可以添加到基本时隙交换机中，以支持使用波分复用传输的TDM信号的WDM交换和交换。

公开(公告)号：US07373089B2

公开(公告)日：2008-05-13

申请号：US10215460

申请日：2002-08-09

申请人： Jianjun Yu ,  Keisuke Kojima ,  Naresh Chand

发明人： Jianjun Yu ,  Keisuke Kojima ,  Naresh Chand

IPC分类号： H04B10/04 ,  H04B10/12

CPC分类号： H04B10/25137

摘要： Methods and apparatus for providing improving optical signal transmission results over standard mode fiber using a combination of negative chirp, low extinction ratio, and self-phase modulation transmission techniques in combination are described. The use of pre-transmission signal distortion in combinations with one or more of the other transmission techniques is also described. Pre-transmission signal distortion may be introduced by controlling a modulator with a large symmetric AC signal which causes the modulator to operation in a non-linear region or, alternatively, by using a relatively small non-symmetric AC signal to drive the modulator. Use of the small non-symmetric signal has the advantage of reduced power requirements. The pre-transmission distortion acts to counter some of the distortion introduced by the transmission of the signal over an optic fiber.

摘要翻译： 描述了结合使用负啁啾，低消光比和自相位调制传输技术的组合的标准模式光纤提供改进的光信号传输结果的方法和装置。 还描述了与一种或多种其它传输技术组合使用预发射信号失真。 可以通过控制具有大对称AC信号的调制器来引入预发送信号失真，其使得调制器在非线性区域中操作，或者通过使用相对较小的非对称AC信号来驱动调制器。 使用小的非对称信号具有减少功率要求的优点。 预发射失真用于抵消通过光纤传输信号引入的一些失真。

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。

公开(公告)号：US10181909B2

公开(公告)日：2019-01-15

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 ,  H04B10/90

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.

公开(公告)号：US09027971B2

公开(公告)日：2015-05-12

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： E05C19/10 ,  E05B83/24 ,  B60J5/02

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：US20140199073A1

公开(公告)日：2014-07-17

申请号：US14238464

申请日：2012-08-10

申请人： Jianjun Yu

发明人： Jianjun Yu

IPC分类号： H04J14/02 ,  H04L27/26

CPC分类号： H04J14/0221 ,  H04B10/556 ,  H04L5/0048 ,  H04L27/2601 ,  H04L27/2613

摘要： Techniques for optical communications using optical orthogonal frequency division multiplexing (OFDM) include operating a signal transmitter to modulate laser light to produce modulated light that carries, in optical domain, OFDM subcarriers for carrying communication information, without a frequency guard band between the OFDM subcarriers, and pilot subcarriers for channel estimation at a signal receiver, each pilot subcarrier being free of communication information, and controlling optical power of the pilot subcarriers to vary with optical frequencies of the pilot subcarriers so that optical power of a pilot subcarrier at a high optical frequency is different from optical power of another pilot subcarrier at a low optical frequency.

摘要翻译： 使用光学正交频分复用（OFDM）的光通信技术包括操作信号发射机以调制激光以产生在光域中携带用于承载通信信息的OFDM子载波而不在OFDM子载波之间的频率保护带的调制光， 以及在信号接收机处进行信道估计的导频子载波，每个导频子载波没有通信信息，并且控制导频子载波的光功率随着导频子载波的光频率而变化，使得在高光频率下的导频子载波的光功率 与另一导频子载波的光功率不同，在低光频率。

公开(公告)号：US08380083B2

公开(公告)日：2013-02-19

申请号：US12546250

申请日：2009-08-24

申请人： Jianjun Yu

发明人： Jianjun Yu

IPC分类号： H04B10/00

CPC分类号： H04B10/90 ,  H04B10/2575

摘要： 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.

摘要翻译： 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：US20120176886A1

公开(公告)日：2012-07-12

申请号：US13339476

申请日：2011-12-29

申请人： Jianjun Yu

发明人： Jianjun Yu

IPC分类号： H04J11/00

CPC分类号： H04L27/2614

摘要： A combined Hadamard and companding transform technique is incorporated into orthogonal frequency division multiplexed signals to reduce the peak-to-average ratio of signals. A Hadamard transform is applied to the signals to generate a first transformed signal of subsymbols. An Inverse Fast Fourier Transform is performed on the subsymbols to generate a second transformed signal of the subsymbols. The second transformed signal is then companded, making them ready for transmission as optical signals.

摘要翻译： 合并的Hadamard和压扩变换技术被并入到正交频分复用信号中，以降低信号的峰均比。 将Hadamard变换应用于信号以产生子符号的第一变换信号。 对子符号进行逆快速傅立叶变换，以生成子符号的第二个变换信号。 然后将第二变换信号压缩，使其准备好作为光信号传输。

公开(公告)号：US08200086B2

公开(公告)日：2012-06-12

申请号：US12044417

申请日：2008-03-07

申请人： Yuanqiu Luo ,  Si Yin ,  Jianjun Yu ,  Lei Zong

发明人： Yuanqiu Luo ,  Si Yin ,  Jianjun Yu ,  Lei Zong

IPC分类号： H04J14/00

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

摘要： 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.

摘要翻译： 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。

公开(公告)号：US08131156B2

公开(公告)日：2012-03-06

申请号：US12235013

申请日：2008-09-22

申请人： Jianjun Yu

发明人： Jianjun Yu

IPC分类号： H04B10/00

CPC分类号： H04J14/0226 ,  H04B10/2587 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04J2014/0253 ,  H04L27/2601

摘要： An optical system and method includes a source-free optical network unit coupled to an optical fiber for receiving a centralized lightwave carrier signal with downstream data over the optical fiber. The optical network unit includes a coupler configured to split the original carrier signal into a first path and a second path. The first path includes an optical filter configured to reduce fading effects of the carrier signal. The second path includes a modulator configured to remodulate the centralized lightwave carrier signal with upstream data to produce an upstream data signal for upstream transmission.

摘要翻译： 光学系统和方法包括耦合到光纤的无源光网络单元，用于接收具有光纤上的下行数据的集中式光波载波信号。 光网络单元包括被配置为将原始载波信号分割为第一路径和第二路径的耦合器。 第一路径包括被配置为减少载波信号的衰落影响的滤光器。 第二路径包括配置成用上行数据重新调制集中式光波载波信号以产生用于上行传输的上行数据信号的调制器。