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41. 发明授权

US08417112B2 Protection switching in WDM rings using a shared ring switch 有权
标题翻译：使用共享环路交换机进行WDM环路保护倒换
公开(公告)号：US08417112B2
公开(公告)日：2013-04-09
申请号：US10448559
申请日：2003-05-30
申请人： Dat D. Ngo
发明人： Dat D. Ngo
IPC分类号： G02F1/00 , G02F2/00 , H04B10/00
CPC分类号： H04J14/0283 , H04J14/0295 , H04L43/0847 , H04L43/16 , H04Q11/0062 , H04Q2011/0081 , H04Q2011/0092
摘要： A switching method is provided having improved accuracy in monitoring a network to determine when to switch. The method collects and stores a plurality of bit error rate (BER) values. The BER values are analyzed using a BER hysterisis algorithm to check BER degradation. Thereafter, the method switches a transmission port when the degradation exceeds a predetermined BER threshold level for a predetermined period of time. In another embodiment, a feature which transmits a switch polling signal for a predetermined duration is used with the above switching method.
摘要翻译：提供一种切换方法，其具有提高的监视网络的准确度以确定何时切换。该方法收集并存储多个误码率（BER）值。使用BER滞后算法分析BER值以检查BER降级。此后，当劣化超过预定的BER阈值电平达预定时间时，该方法切换传输端口。在另一个实施例中，以上述切换方法使用发送开关轮询信号预定持续时间的特征。

42. 发明申请

US20130044366A1 METHOD AND APPARATUS FOR CONTROLLING BIAS POINT OF DIFFERENTIAL QUADRATURE PHASE SHIFT KEYING DEMODULATOR 有权
标题翻译：控制差分平移相位移相关调制解调器的方法和装置
公开(公告)号：US20130044366A1
公开(公告)日：2013-02-21
申请号：US13634469
申请日：2010-08-20
申请人： Jianhua Chen , Hong Yi
发明人： Jianhua Chen , Hong Yi
IPC分类号： G02F2/00
CPC分类号： H04B10/69 , H04B10/50575 , H04B10/50577 , H04B10/677
摘要： Method and apparatus for controlling bias point of DQPSK demodulator are disclosed. The method comprises: step 1: respectively applying first and second bias voltages to I-path and Q-path, and applying identical pilot voltage signals to I-path and Q-path (S202); step 2:executing filtering processing on I-path and Q-path differential current signals collected by balance receiver and determining θIand θQ (S204); step 3: performing feedback control to first and second bias voltages respectively according to θI and θQ so that θI and θQ respectively reaches expected bias point values of I-path and Q-path (S206); executing step 2 and 3 cyclically at preset regular intervals (S208), so that θI and θQ remains consistently the expected bias point values of I-path and Q-path. The solution enables bias point of DQPSK demodulator to be locked at any expected bias point value, facilitates realization of digitization, and is not easily influenced.
摘要翻译：公开了用于控制DQPSK解调器偏置点的方法和装置。该方法包括：步骤1：分别对I路径和Q路径施加第一和第二偏置电压，并向I路径和Q路径施加相同的导频电压信号（S202）; 步骤2：对平衡接收机收集的I路径和Q路径差分电流信号执行滤波处理和确定; Iand＆thetas; Q（S204）; 步骤3：分别根据I和I等级Q对第一和第二偏置电压进行反馈控制，使得I和I等于Q分别达到I路径和Q路径的预期偏置点值（S206）; 以预定的时间间隔循环执行步骤2和3（S208），使得I和＆amp; t; Q保持一致地是I-path和Q-path的预期偏置点值。该解决方案使DQPSK解调器的偏置点能够被锁定在任何预期的偏置点值，便于数字化的实现，并且不容易受到影响。

43. 发明授权

US08379295B2 Optical differential phase-shift keyed signal demodulator 有权
标题翻译：光差分相移键控信号解调器
公开(公告)号：US08379295B2
公开(公告)日：2013-02-19
申请号：US12687570
申请日：2010-01-14
申请人： Xueyan Zheng , Kevin McCallion
发明人： Xueyan Zheng , Kevin McCallion
IPC分类号： G02F2/00 , G02F1/35
CPC分类号： H04L27/223 , G02F2/00 , H04B10/677 , H04L27/2071
摘要： A phase-shift keyed signal demodulator is disclosed including a filter positioned to receive an input beam, a first photodiode positioned to receive light reflected from the filter, and a second photodiode positioned to receive light transmitted through the filter. A difference between outputs of the first and second photodiodes is interpreted to determine a data value encoded in the input beam. In another embodiment N filters receive inputs from a splitter and include transmission functions offset from one another. N pairs of photo diodes receive the transmitted and reflected beams from each filter and a decoder converts the outputs of the pairs of photodiodes to one or more data symbols.
摘要翻译：公开了一种相移键控信号解调器，其包括定位成接收输入光束的滤光器，定位成接收从滤光器反射的光的第一光电二极管和定位成接收透过滤光器的光的第二光电二极管。解释第一和第二光电二极管的输出之间的差异，以确定在输入光束中编码的数据值。在另一个实施例中，N个滤波器从分离器接收输入并且包括彼此偏移的传输函数。 N对光电二极管接收来自每个滤波器的发送和反射光束，并且解码器将该对光电二极管的输出转换为一个或多个数据符号。

44. 发明申请

US20130004181A1 Fiber-Optic Automatic Gain Control Systems and Methods 有权
标题翻译：光纤自动增益控制系统和方法
公开(公告)号：US20130004181A1
公开(公告)日：2013-01-03
申请号：US13173155
申请日：2011-06-30
申请人： Juan C. Juarez , David W. Young , Joseph E. Sluz
发明人： Juan C. Juarez , David W. Young , Joseph E. Sluz
IPC分类号： G02F2/00 , H04B10/06
CPC分类号： H04B10/1121
摘要： Methods and systems to control a gain applied to a free-space optical (FSO) signal to reduce time-varying intensity fluctuations. An optical pre-amplifier may provide a first, relatively moderate gain with low noise factor (NF). A second optical amplifier may provide a second gain. Amplification may include doped fiber amplification (DFA), such as erbium-doped fiber amplification (EDFA) and/or Raman amplification. A variable optical attenuator (VOA) may be controllable with a relatively fast response time to reduce the time-varying intensity fluctuations. The VOA may effectively control an overall system gain. The gain of the first and/or second optical amplifier may also be controllable to reduce the time-varying intensity fluctuations. Optical intensities may be detected at one or more locations to support one or more feed-forward and/or feedback control loops. A clamp may be applied when an optical power reaches a threshold.
摘要翻译：用于控制应用于自由空间光（FSO）信号的增益以减少时变强度波动的方法和系统。光学前置放大器可以提供具有低噪声因子（NF）的第一相对适度的增益。第二光放大器可以提供第二增益。扩增可以包括掺杂光纤放大（DFA），例如掺铒光纤放大（EDFA）和/或拉曼放大。可变光衰减器（VOA）可以以相对较快的响应时间来控制，以减少随时间变化的强度波动。美国之音可以有效地控制整个系统的增益。第一和/或第二光放大器的增益也可以是可控的，以减少随时间变化的强度波动。可以在一个或多个位置处检测光强度以支持一个或多个前馈和/或反馈控制回路。当光功率达到阈值时，可以应用钳位。

45. 发明授权

US08346077B1 Multi-domain systems and methods for fail secure information transfer 失效
标题翻译：用于故障安全信息传输的多域系统和方法
公开(公告)号：US08346077B1
公开(公告)日：2013-01-01
申请号：US12765171
申请日：2010-04-22
申请人： Brian L. Uhlhorn , Howard J. Schantz
发明人： Brian L. Uhlhorn , Howard J. Schantz
IPC分类号： G02F1/00 , G02F2/00 , H01S3/00 , H04B10/00 , H04J14/00 , H04B10/08 , H04B17/00 , G06F11/00 , G06F12/14 , G06F12/16 , G06F15/173 , G08B23/00
CPC分类号： H04J14/0287 , G06F21/604 , G06F21/606 , H04B5/0062 , H04B10/0705 , H04L63/0428 , H04L63/20 , H04W84/18
摘要： Systems and techniques for regulating the security of information flow can include multiple information receiving/transmitting domains where a device failure in one or more domains would not comprise the security of the systems. The systems and techniques may be implemented using a multi-domain checking approach in which the respective device operation status in each receiving/transmitting domain is independently monitored. The systems and techniques can advantageously prevent sensitive information from being inadvertently transferred to an untrusted or unauthorized entity.
摘要翻译：用于调节信息流的安全性的系统和技术可以包括多个信息接收/发送域，其中一个或多个域中的设备故障将不包括系统的安全性。可以使用多域检查方法来实现系统和技术，其中每个接收/发送域中的各个设备操作状态被独立地监视。这些系统和技术可以有利地防止敏感信息被无意地转移到不可信或未授权的实体。

46. 发明授权

US08264764B1 Multiple-FSR DPSK demodulator 失效
标题翻译：多FSR DPSK解调器
公开(公告)号：US08264764B1
公开(公告)日：2012-09-11
申请号：US13210340
申请日：2011-08-15
申请人： Yung-Chieh Hsieh
发明人： Yung-Chieh Hsieh
IPC分类号： G02F2/00
CPC分类号： H04B10/677
摘要： A switchable free-spectral-range mode selector is used to change the free spectral range of a free-space delay-line interferometer. The mode selector consists of a rotatable device with at least one transparent plate selected to produce the desired change in the free spectral range of the delay-line interferometer. The device may be rotated in and out of the free-space optical path of on of the interferometer arms. If used as a DPSK demodulator, the device enables operation at multiple predetermined free spectral ranges. In the preferred embodiment, the demodulator includes a 50/50 beam-splitter cube combined with two cavities. The mode selector consists of a plurality of different transparent slabs attached to a rotatable shaft so that any one of the slabs or none may be inserted in the appropriate optical path to obtain the desired FSR mode of operation.
摘要翻译：可切换的自由光谱范围模式选择器用于改变自由空间延迟线干涉仪的自由光谱范围。模式选择器由可旋转的装置组成，其中至少有一个透明板被选择以产生延迟线干涉仪的自由光谱范围内所需的变化。该装置可以旋转进入和离开干涉仪臂的自由空间光路。如果用作DPSK解调器，则该器件能够在多个预定的自由光谱范围内进行操作。在优选实施例中，解调器包括与两个空腔结合的50/50分束器立方体。模式选择器由连接到可旋转轴的多个不同的透明板组成，使得任何一个板或者不能插入适当的光路中以获得期望的FSR操作模式。

47. 发明申请

US20120205521A1 DUAL-POLARIZATION QPSK DEMODULATOR 有权
标题翻译：双极化QPSK解调器
公开(公告)号：US20120205521A1
公开(公告)日：2012-08-16
申请号：US13304948
申请日：2011-11-28
申请人： Fan CHEN , Fahua LAN , Huiping LI , Kevin Dapeng ZHANG
发明人： Fan CHEN , Fahua LAN , Huiping LI , Kevin Dapeng ZHANG
IPC分类号： G02F2/00 , G01J1/44
CPC分类号： H04B10/677 , H04B10/61
摘要： In an embodiment, a DP-QPSK demodulator includes first, second and third polarization beam splitters (“PBSs”) and first, second and third half waveplates (“HWPs”). The first HWP is positioned to receive an output of the first PBS. The second PBS is positioned to receive an output of the first HWP. The second HWP is positioned to receive an output of the second PBS. The third PBS is positioned to receive an output of the second HWP. The third HWP is positioned to receive an output of the third PBS.
摘要翻译：在一个实施例中，DP-QPSK解调器包括第一，第二和第三偏振分束器（“PBS”）和第一，第二和第三半波片（“HWP”）。第一HWP被定位成接收第一PBS的输出。第二PBS定位成接收第一HWP的输出。第二HWP被定位成接收第二PBS的输出。第三PBS定位成接收第二HWP的输出。第三HWP被定位成接收第三PBS的输出。

48. 发明申请

US20120044565A1 DELAY LINE INTERFEROMETER WITH LIQUID CRYSTAL TUNING ELEMENT 失效
标题翻译：具有液晶调谐元件的延迟线干涉仪
公开(公告)号：US20120044565A1
公开(公告)日：2012-02-23
申请号：US12860639
申请日：2010-08-20
申请人： Ruibo Wang , Ruipeng Sun
发明人： Ruibo Wang , Ruipeng Sun
IPC分类号： G02F2/00 , G02B27/28 , G02F1/13363
CPC分类号： G02B27/283
摘要： A delay line interferometer is configured with a liquid-crystal (LC) tuning element as a phase modulator for demodulating a phase-modulated input signal. The LC tuning element allows for quickly tuning the phase difference between two optical signals separated from the phase-modulated input signal, so that the two optical signals can be coherently recombined to interfere with each other and produce one or more intensity-modulated optical signals. In some embodiments, the LC tuning element is configured to reduce polarization-dependent frequency shift without the use of additional high-precision optical elements and/or coatings.
摘要翻译：延迟线干涉仪配置有液晶（LC）调谐元件作为用于解调相位调制输入信号的相位调制器。 LC调谐元件允许快速调谐与相位调制输入信号分离的两个光信号之间的相位差，使得两个光信号可以相干重新组合以相互干扰并产生一个或多个强度调制的光信号。在一些实施例中，LC调谐元件被配置为在不使用附加的高精度光学元件和/或涂层的情况下减少偏振相关的频移。

49. 发明申请

US20120008951A1 DEMODULATOR AND OPTICAL TRANSCEIVER 有权
标题翻译：解调器和光学收发器
公开(公告)号：US20120008951A1
公开(公告)日：2012-01-12
申请号：US13176772
申请日：2011-07-06
申请人： Hideharu MIKAMI
发明人： Hideharu MIKAMI
IPC分类号： H04J14/06 , G02F2/00
CPC分类号： H04L27/223 , H04B10/613 , H04B10/614
摘要： In a free space optical system type demodulator of a phase shift keying signal, if a half beam splitter is used as a non-polarizing optical branching unit that is used when generating beams corresponding to I and Q channels or when multiplexing an interference light, control of a power branching ratio is difficult, and it is necessary to suppress phase shifts that are different depending on a polarization state of an input state, and thereby the demodulator becomes high cost. Moreover, since directions of branched lights are different, it is difficult to suppress a skew of the demodulator. In the present invention, the non-polarizing optical branching unit that is used when generating the beams corresponding to the I and Q channels and when multiplexing the interference light is realized using polarization rotating elements and polarization separating elements. Moreover, branched beams are substantially aligned.
摘要翻译：在相移键控信号的自由空间光系统型解调器中，如果使用半分束器作为在产生与I和Q通道相对应的波束时使用的非偏振光分路单元，或者当复用干扰光时，控制功率分支比是困难的，并且需要抑制根据输入状态的偏振状态而不同的相移，从而解调器变得高成本。此外，由于分支灯的方向不同，难以抑制解调器的偏斜。在本发明中，使用偏振光旋转元件和偏振分离元件来实现在产生与I和Q通道对应的光束时以及多路复用干涉光时使用的非偏振光分支单元。此外，分支光束基本对齐。

50. 发明授权

US08060007B2 Adaptive crosspole technique 有权
标题翻译：自适应交叉极技术
公开(公告)号：US08060007B2
公开(公告)日：2011-11-15
申请号：US12198977
申请日：2008-08-27
申请人： John A. Mohr
发明人： John A. Mohr
IPC分类号： H04K3/00 , H04M11/00 , H04M1/00 , H04B1/38 , H04B10/00 , H04B10/04 , H04B10/12 , G01S13/08 , G02F1/01 , G02F1/035 , G02F1/00 , G02F2/00 , H02H1/00 , G02B6/00 , H01S3/00 , H04J14/00
CPC分类号： H04K3/825 , H04K3/65
摘要： An RF signal processing device which includes a countermeasure set connected to the processing device. The RF signal processing device shifts an incoming RF signal by ninety degrees and combines the phase shifted RF signal with RF jamming signals from a jammer. The processing device next transmits the RF signal including the RF jamming signals from the jammer.
摘要翻译：一种RF信号处理装置，其包括连接到处理装置的对策组。 RF信号处理装置将输入的RF信号移位九十度，并将相移的RF信号与干扰信号的RF干扰信号组合。处理装置接下来从干扰信号发送包括RF干扰信号的RF信号。

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