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    SYSTEM OF METHOD FOR DYNAMIC RANGE EXTENSION
    11.
    发明申请
    SYSTEM OF METHOD FOR DYNAMIC RANGE EXTENSION 有权
    动态范围扩展方法系统

    公开(公告)号：US20080225914A1

    公开(公告)日：2008-09-18

    申请号：US11687444

    申请日：2007-03-16

    Applicant: Aravanan Gurusami ,  Douglas Llewellyn Butler ,  Timothy K. Zahnley ,  Scott R. Dahl ,  Peter G. Wigley

    Inventor： Aravanan Gurusami ,  Douglas Llewellyn Butler ,  Timothy K. Zahnley ,  Scott R. Dahl ,  Peter G. Wigley

    IPC: H01S3/094

    CPC classification number: H01S3/06754 ,  H01S3/094003 ,  H01S3/094076 ,  H01S3/0941 ,  H01S3/10069 ,  H01S3/1301

    Abstract: The present invention generally relates to the operation of optical network equipment such as optical amplifiers. In one aspect, a method of operating an optical amplifier is provided such that output of the optical amplifier avoids the effects of operating an optical gain medium in a non-linear (kink) region of an L-I curve. The method generally includes operating an optical gain medium in a fully off state or fully on state above the kink region with a PWM signal. In another aspect, the effects of the kink region may be compensated for by utilizing a lookup table. A sample of the optical power of an amplified optical signal may be used to select an entry in the lookup table that compensates for non-linearities in the kink region. In yet a further aspect, a lookup table may be used to control a pulse modulator to compensate for non-linearites in the kink region of the L-I curve.

    Abstract translation: 本发明一般涉及诸如光放大器之类的光网络设备的操作。 一方面，提供了一种操作光放大器的方法，使得光放大器的输出避免了在L-I曲线的非线性（扭结）区域中操作光学增益介质的影响。 该方法通常包括以PWM信号操作处于扭结区域的完全关闭状态或完全导通状态的光学增益介质。 在另一方面，可以通过利用查找表来补偿扭结区域的影响。 放大的光信号的光功率的样本可以用于选择补偿在扭结区域中的非线性的查找表中的条目。 在另一方面，可以使用查找表来控制脉冲调制器来补偿L-I曲线的扭结区域中的非线性元素。

    Digital node for hybrid fiber/coax network
    12.
    发明授权
    Digital node for hybrid fiber/coax network 有权
    混合光纤/同轴电缆网络的数字节点

    公开(公告)号：US07031335B1

    公开(公告)日：2006-04-18

    申请号：US09432558

    申请日：1999-11-03

    Applicant: John E. Donohue ,  Aravanan Gurusami ,  Clarke V. Greene

    Inventor： John E. Donohue ,  Aravanan Gurusami ,  Clarke V. Greene

    IPC: H04L12/413

    CPC classification number: H04B10/272

    Abstract: An optical distribution node is provided. The optical distribution node includes a laser transceiver that is coupleable to at least one fiber optic link. The optical distribution node communicates upstream and downstream digital data with the head end over the at least one fiber optic link. The optical distribution node further includes a data concentrator coupled to the laser transceiver. Further, for each of at least one coaxial cable link, the optical distribution node includes a frequency translator and a node modem. The frequency translator receives and translates the upstream digital data from modems on the at least one coaxial cable link to a different carrier to provide a signal to the modems on the at least one coaxial cable link for collision detection. The node modem is coupled between the coaxial cable link and the data concentrator. The node modem demodulates upstream digital data for the data concentrator and modulates downstream digital data for transmission over the coaxial cable link.

    Abstract translation: 提供光分配节点。 光分配节点包括可耦合到至少一个光纤链路的激光收发器。 光分配节点通过至少一个光纤链路将上游和下游数字数据与头端通信。 光分配节点还包括耦合到激光收发器的数据集中器。 此外，对于至少一个同轴电缆链路中的每一个，光分配节点包括频率转换器和节点调制解调器。 频率转换器将上游数字数据从至少一个同轴电缆链路上的调制解调器接收并转换到不同的载波，以向至少一个同轴电缆链路上的调制解调器提供信号用于冲突检测。 节点调制解调器耦合在同轴电缆链路和数据集中器之间。 节点调制解调器解调用于数据集中器的上游数字数据，并调制下行数字数据以在同轴电缆链路上传输。

    Floating point digital transversal filter
    13.
    发明授权
    Floating point digital transversal filter 失效
    浮点数字横向滤波器

    公开(公告)号：US5838725A

    公开(公告)日：1998-11-17

    申请号：US759669

    申请日：1996-12-06

    Applicant: Aravanan Gurusami ,  Michael Nekhamkin ,  Robert J. Chamberlin

    Inventor： Aravanan Gurusami ,  Michael Nekhamkin ,  Robert J. Chamberlin

    IPC: H03H17/00 ,  H03H17/06 ,  H03H7/30

    CPC classification number: H03H17/0607

    Abstract: A digital finite impulse response (FIR) filter having a shift register for receiving a digital signal, a counter for counting pulses in a sampling signal and a look-up table read-only memory (ROM) having address inputs coupled to the outputs of the stages of the FIR filter and to the outputs from the counter. The output of the ROM forms the filtered signal. This digital filter approach allows for a balance between cost and performance and is inherently flexible due to the programmable nature of its core device (ROM).

    Abstract translation: 具有用于接收数字信号的移位寄存器的数字有限脉冲响应（FIR）滤波器，用于对采样信号中的脉冲进行计数的计数器和具有耦合到该输出端的地址输入的查找表只读存储器（ROM） FIR滤波器的阶段和来自计数器的输出。 ROM的输出形成滤波信号。 这种数字滤波器方法可以在成本和性能之间取得平衡，并且由于其核心器件（ROM）的可编程性质而固有地灵活。

    Dynamic thermal management of laser devices
    16.
    发明授权
    Dynamic thermal management of laser devices 有权
    激光设备的动态热管理

    公开(公告)号：US07512162B2

    公开(公告)日：2009-03-31

    申请号：US11747728

    申请日：2007-05-11

    Applicant: Aravanan Gurusami ,  Timothy K. Zahnley ,  Scott R. Dahl ,  Gregory Chilson

    Inventor： Aravanan Gurusami ,  Timothy K. Zahnley ,  Scott R. Dahl ,  Gregory Chilson

    IPC: H01S3/04

    CPC classification number: H01S5/024 ,  H01S5/02415 ,  H01S5/0612 ,  H01S5/06804 ,  H01S5/06825

    Abstract: The present invention generally relates to dynamic thermal management of a device. In one aspect, a method for thermally controlling a device is provided. The method includes setting a value of a set point in a thermoelectric cooler, wherein the set point corresponds to a first operating state. The method also includes monitoring a condition of the device to determine if the device is in the first operating state or a second operating state. Additionally, the method includes dynamically altering the value of the set point according to an algorithm upon determination that the device is in the second operating state. In another aspect, a method for dynamically controlling a device having a thermoelectric cooler is provided. In yet a further aspect, a system for dynamic thermal management of a device is provided.

    Abstract translation: 本发明一般涉及一种设备的动态热管理。 一方面，提供一种用于热控制装置的方法。 该方法包括设置热电冷却器中的设定值的值，其中设定点对应于第一操作状态。 该方法还包括监视设备的状态以确定设备是处于第一操作状态还是处于第二操作状态。 此外，该方法包括在确定设备处于第二操作状态时根据算法动态地改变设定点的值。 另一方面，提供一种用于动态控制具有热电冷却器的装置的方法。 在另一方面，提供了一种用于设备的动态热管理的系统。

    DYNAMIC THERMAL MANAGEMENT OF LASER DEVICES
    17.
    发明申请
    DYNAMIC THERMAL MANAGEMENT OF LASER DEVICES 有权
    激光器的动态热管理

    公开(公告)号：US20080279237A1

    公开(公告)日：2008-11-13

    申请号：US11747728

    申请日：2007-05-11

    Applicant: Aravanan Gurusami ,  Timothy K. Zahnley ,  Scott R. Dahl ,  Gregory Chilson

    Inventor： Aravanan Gurusami ,  Timothy K. Zahnley ,  Scott R. Dahl ,  Gregory Chilson

    IPC: H01S3/04

    CPC classification number: H01S5/024 ,  H01S5/02415 ,  H01S5/0612 ,  H01S5/06804 ,  H01S5/06825

    Abstract: The present invention generally relates to dynamic thermal management of a device. In one aspect, a method for thermally controlling a device is provided. The method includes setting a value of a set point in a thermoelectric cooler, wherein the set point corresponds to a first operating state. The method also includes monitoring a condition of the device to determine if the device is in the first operating state or a second operating state. Additionally, the method includes dynamically altering the value of the set point according to an algorithm upon determination that the device is in the second operating state. In another aspect, a method for dynamically controlling a device having a thermoelectric cooler is provided. In yet a further aspect, a system for dynamic thermal management of a device is provided.

    Abstract translation: 本发明一般涉及一种设备的动态热管理。 一方面，提供一种用于热控制装置的方法。 该方法包括设置热电冷却器中的设定值的值，其中设定点对应于第一操作状态。 该方法还包括监视设备的状态以确定设备是处于第一操作状态还是处于第二操作状态。 此外，该方法包括在确定设备处于第二操作状态时根据算法动态地改变设定点的值。 另一方面，提供一种用于动态控制具有热电冷却器的装置的方法。 在另一方面，提供了一种用于设备的动态热管理的系统。

    Synthesized high speed digital filters
    19.
    发明授权
    Synthesized high speed digital filters 失效
    合成高速数字滤波器

    公开(公告)号：US06961680B2

    公开(公告)日：2005-11-01

    申请号：US10330711

    申请日：2002-12-27

    Applicant: Kevin S. Gerrish ,  Aravanan Gurusami ,  David R. Peters

    Inventor： Kevin S. Gerrish ,  Aravanan Gurusami ,  David R. Peters

    IPC: G02B6/28 ,  G06F15/00 ,  H03H17/04 ,  H04B10/04

    CPC classification number: H03H17/0283 ,  H03H17/04

    Abstract: A synthesized digital filter and method for synthesizing the digital filter are described herein. In one embodiment of the present invention, the digital filter is made using analog RF components. In another embodiment of the present invention, the digital filter is made using optical components which enables an optical signal to be manipulated in an optical domain without needing to convert the optical signal into an electrical domain.

    Abstract translation: 这里描述了一种用于合成数字滤波器的合成数字滤波器和方法。 在本发明的一个实施例中，数字滤波器是使用模拟RF分量来制造的。 在本发明的另一个实施例中，数字滤波器是使用光学部件制成的，其使得光信号能够在光学域中被操纵，而不需要将光信号转换成电域。

    Increased transmission capacity for a fiber-optic link
    20.
    发明授权
    Increased transmission capacity for a fiber-optic link 有权

    公开(公告)号：US06643471B2

    公开(公告)日：2003-11-04

    申请号：US09824433

    申请日：2001-04-02

    Applicant: Aravanan Gurusami ,  Joseph F. Chiappetta

    Inventor： Aravanan Gurusami ,  Joseph F. Chiappetta

    IPC: H04B1004

    CPC classification number: H04L25/49 ,  H04B10/6931

    Abstract: An optical communication system is provided. The optical communication system includes an optical fiber, an optical transmitter, and an optical receiver. The optical transmitter is coupled to the optical fiber. The optical transmitter is adapted to encode a pulse amplitude modulated optical signal based on at least two, independent input signals. The optical receiver is coupled to the optical fiber. The optical receiver is adapted to decode the pulse amplitude modulated optical signal to reproduce the at least two, independent input signals as output signals.

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