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19 条记录 (耗时 0.017 秒)

    Self-adjusting optical add-drop multiplexer and optical networks using same
    1.
    发明授权
    Self-adjusting optical add-drop multiplexer and optical networks using same 失效
    自调光分插复用器和光网络使用相同

    公开(公告)号：US06721509B2

    公开(公告)日：2004-04-13

    申请号：US09730698

    申请日：2000-12-05

    申请人： Guohua Xiao ,  Xiaoping Mao ,  Lintao Zhang ,  Xiaofan Cao

    发明人： Guohua Xiao ,  Xiaoping Mao ,  Lintao Zhang ,  Xiaofan Cao

    IPC分类号： H04J1402

    CPC分类号： G02B6/29362 ,  G02B6/266 ,  G02B6/29383 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0221 ,  H04Q11/0005 ,  H04Q2011/0016 ,  H04Q2011/0024 ,  H04Q2011/0039 ,  H04Q2011/0092

    摘要： A self-adjusting optical add-drop multiplexer monitors the power in a drop signal and attenuates the power in an add signal to match the power in express WDM channels (signals). When used in a fiber network, and more particularly, in a metro network, the deleterious effects of optical amplification are reduced. Power attenuation is also used in an optical switching assembly particularly useful in two-fiber ring network. The optical switching assembly monitors drop channels from the two rings of the network and attenuates the add channel(s) accordingly. An optical switch operates to direct the drop signal from one of the two rings to a receiver in accordance with a control signal based on the monitored drop channels. The self-adjusting optical add-drop multiplexer also monitors the power in the drop signals and issues an alarm if the drop signal is of a power level above or below predetermined levels.

    摘要翻译： 自调整光分插复用器监视下降信号的功率，并在加信号中衰减功率以匹配快速WDM通道（信号）中的功率。 当在光纤网络中使用时，更特别地，在城域网中，减少了光放大的有害影响。 功率衰减也用于特别适用于双光纤环网络的光交换机组。 光学开关组件监测来自网络的两个环的丢弃信道并且相应地衰减添加信道。 光开关用于根据所监视的放下通道的控制信号将来自两个环中的一个的丢失信号引导到接收器。 自调整光分插复用器还监视下降信号的功率，并且如果下降信号的功率电平高于或低于预定电平，则发出报警。

    Apparatus and method for channel monitoring in a hybrid distributed Raman/EDFA optical amplifier
    2.
    发明授权
    Apparatus and method for channel monitoring in a hybrid distributed Raman/EDFA optical amplifier 有权
    在混合分布式拉曼/ EDFA光放大器中进行信道监测的装置和方法

    公开(公告)号：US06441952B1

    公开(公告)日：2002-08-27

    申请号：US09898244

    申请日：2001-07-03

    申请人： Xiaodong Duan ,  Guohua Xiao ,  Lintao Zhang ,  Dongqi Liu ,  Gang Li ,  Paul Hull ,  Charles Xiaoping Mao ,  Simon Xiaofan Cao

    发明人： Xiaodong Duan ,  Guohua Xiao ,  Lintao Zhang ,  Dongqi Liu ,  Gang Li ,  Paul Hull ,  Charles Xiaoping Mao ,  Simon Xiaofan Cao

    IPC分类号： H01S300

    CPC分类号： H01S3/06758 ,  H01S3/10015 ,  H01S3/1305 ,  H01S3/302

    摘要： The present invention provides a hybrid Raman/EDFA optical amplifier that utilizes a first optical detector that generates a first electrical or electronic signal that is proportional the combined optical power of the signal light and the leaked pump laser light, a second optical detector that generates a second electrical or electronic signal that is proportional to the power of the pump laser light and an electronic subtraction circuit that receives the first and second electrical or electronic signals and generates a difference signal that is proportional to only to the optical power of the signal light and insensitive to the power of the Raman pump laser light. The difference signal is utilized by an EDFA control circuit to control and/or adjust the operation of the EDFA based upon changes in the power of the input optical signal.

    摘要翻译： 本发明提供了一种混合拉曼/ EDFA光放大器，其利用第一光学检测器，其产生与信号光和泄漏的泵浦激光的组合光功率成正比的第一电或电信号;第二光检测器， 第二电子或电子信号与泵激光的功率成比例，以及电子减法电路，其接收第一和第二电或电信号，并产生与仅与信号光的光功率成比例的差分信号，以及 对拉曼泵浦激光的功率不敏感。 差分信号由EDFA控制电路用于基于输入光信号的功率变化来控制和/或调节EDFA的操作。

    Reconfigurable automatic gain control and method for optical amplifier
    4.
    发明授权
    Reconfigurable automatic gain control and method for optical amplifier 失效
    可重构自动增益控制和光放大器的方法

    公开(公告)号：US06417964B1

    公开(公告)日：2002-07-09

    申请号：US09777162

    申请日：2001-02-05

    申请人： Lintao Zhang ,  Charles Mao ,  Xiaofan Cao ,  Guohua Xiao

    发明人： Lintao Zhang ,  Charles Mao ,  Xiaofan Cao ,  Guohua Xiao

    IPC分类号： H04B1012

    CPC分类号： H04B10/2931

    摘要： A reconfigurable AGC loop design for an optical amplifier with a software provisional switch in the AGC loop inside the optical amplifier is disclosed. On the input side, there is a 1×m switch for switching a first input to the input of an optical amplifier, or to route other external pins to the optical amplifier. On the output side, there is a 1×n switch for switching a first output to the output of an optical amplifier, or to route other external pins to the optical amplifier. The AGC loop inside an optical amplifier is available to operate with other external signals. This reconfigurability unleashes the AGC loop capability that is traditionally confined to individual optical amplifier, provides flexibility, and greatly simplifies the design of optical node.

    摘要翻译： 公开了一种用于具有在光放大器内的AGC环路中的软件临时开关的光放大器的可重构AGC环路设计。 在输入端，有一个1xm开关，用于将第一个输入切换到光放大器的输入端，或将其他外部引脚连接到光放大器。 在输出端，有一个1xn开关，用于将第一个输出切换到光放大器的输出，或将其他外部引脚连接到光放大器。 光放大器内的AGC环路可用于与其他外部信号一起工作。 这种可重新配置释放了传统上限于单个光放大器的AGC环路功能，提供了灵活性，并大大简化了光节点的设计。

    Reconfigurable service ring and method for operation in optical networks
    5.
    发明授权
    Reconfigurable service ring and method for operation in optical networks 失效
    光网络可重构服务环和操作方法

    公开(公告)号：US06970617B2

    公开(公告)日：2005-11-29

    申请号：US10337200

    申请日：2003-01-07

    申请人： Charles Mao ,  Lintao Zhang ,  Guohua Xiao

    发明人： Charles Mao ,  Lintao Zhang ,  Guohua Xiao

    IPC分类号： H04J14/02 ,  H04J14/00 ,  G02B6/28

    CPC分类号： H04J14/0283 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0227 ,  H04J14/0241

    摘要： An optical reconfigurable service ring (RSR) architecture based on a RSR channel and WDM channel plan matrix, and method for operation in a fiber network that provides WDM wavelength networking functionalities such as provisional wavelength services, optical circuit switching, optical layer 2 packet switching, optical storage switching, and optical layer 3 packet routing, are proposed. In one embodiment, sixteen wavelength are dynamically switching, routed, or distributed among five optical add/drop nodes using narrowly wavelength tunable transmitters and fixed optical add/drop multiplexer modules.

    摘要翻译： 一种基于RSR信道和WDM信道平面矩阵的光学可重构业务环（RSR）架构，以及提供诸如临时波长业务，光电路交换，光层2分组交换等WDM波长组合功能的光纤网络中的操作方法， 光存储交换和光层3分组路由。 在一个实施例中，十六个波长在使用窄波长可调谐发射机和固定光分插复用器模块的五个光分插节点之间动态切换，路由或分布。

    System and method for determining the position of a remote object
    8.
    发明授权
    System and method for determining the position of a remote object 有权
    用于确定远程对象位置的系统和方法

    公开(公告)号：US08701677B2

    公开(公告)日：2014-04-22

    申请号：US12753931

    申请日：2010-04-05

    申请人： Xiaodong Duan ,  Guohua Xiao ,  Xinhong Wang

    发明人： Xiaodong Duan ,  Guohua Xiao ,  Xinhong Wang

    IPC分类号： A61B19/00 ,  G01R33/02 ,  G01R33/025

    CPC分类号： A61B5/07 ,  A61B1/00158 ,  A61B1/041 ,  A61B5/062 ,  A61B34/20 ,  A61B90/361 ,  A61B2034/2051

    摘要： The invention provides methods and systems for determining the position of a remote object such as an in vivo medical device such as capsule or probe within a medical patient. The systems and methods of the invention may also be used in other enclosed environments such as fluid handling or mechanical systems. The systems and methods of the invention use one or more external magnetic sensor arrays for sensing the magnetic field of a remote object within a target area. The position of the object is determined by applying magnetic field spatial geometry characterization point analysis to evaluate the sensed magnetic field.

    摘要翻译： 本发明提供了用于确定远程物体（例如医疗患者体内医疗装置例如胶囊或探针）的位置的方法和系统。 本发明的系统和方法也可用于其它封闭的环境中，例如流体处理或机械系统。 本发明的系统和方法使用一个或多个外部磁传感器阵列来感测目标区域内的远程物体的磁场。 通过应用磁场空间几何特征点分析来评估物体的位置来评估感测磁场。

    Wireless capsule endoscope and power supply control method thereof
    9.
    发明授权
    Wireless capsule endoscope and power supply control method thereof 有权

    公开(公告)号：US10531788B2

    公开(公告)日：2020-01-14

    申请号：US14321537

    申请日：2014-07-01

    申请人： Xinhong Wang ,  Guohua Xiao ,  Xiaodong Duan ,  Junjie Wang

    发明人： Xinhong Wang ,  Guohua Xiao ,  Xiaodong Duan ,  Junjie Wang

    IPC分类号： A61B1/04 ,  A61B1/045 ,  A61B1/00

    摘要： The present invention relates to a wireless capsule endoscope and a power supply control method thereof. The method includes controlling the power supply of the capsule endoscope wirelessly and automatically adjusting power consumption of the power supply in the capsule endoscope. The wireless capsule endoscope includes a capsule casing, a light generator arranged at outside of the capsule casing, an opto-electronic switching starter arranged in the capsule casing, a power supply, a control module, a posture sensor, an illumination unit, an image processing device and a radio frequency transmission unit. The power supply being driven by the light generator in the present invention can effectively solve the incompatible problem between a traditional magnetic switch and a magnetic control device. Meanwhile, the control module and the posture detector enable the power supply to be in different working status under different states, which can prolong the service life of the power supply of the capsule endoscope.