知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

848 条记录 (耗时 0.032 秒)

    Multi-stage optical fiber amplifier with high gain and low duty cycle
    12.
    发明授权
    Multi-stage optical fiber amplifier with high gain and low duty cycle 失效
    具有高增益和低占空比的多级光纤放大器

    公开(公告)号：US08493653B2

    公开(公告)日：2013-07-23

    申请号：US13298885

    申请日：2011-11-17

    申请人： Motoki Kakui

    发明人： Motoki Kakui

    IPC分类号： H04B10/17

    CPC分类号： H01S3/06758 ,  H01S3/10007

    摘要： The present invention relates to an optical fiber amplifying module equipped with a structure for stably attaining a high gain even when amplifying light having a low duty cycle. The optical fiber amplifying module comprises at least three amplification optical fibers successively arranged from an input connector to an output collimator. A bandpass filter is arranged between the first- and second-stage amplification optical fibers. Control means having a structure constituted by optically passive components alone or a feedback structure functions so as to render an upper limit to a gain for input light in the first-stage amplification optical fiber, thereby preventing the deterioration in performances such as destruction of the bandpass filter from occurring in optical components positioned on the upstream side of the final-stage amplification optical fiber.

    摘要翻译： 本发明涉及一种具有即使在放大低占空比的光时稳定获得高增益的结构的光纤放大模块。 光纤放大模块包括从输入连接器连续地布置到输出准直器的至少三个放大光纤。 带通滤波器布置在第一和第二级放大光纤之间。 控制装置具有仅由光学无源部件构成的结构或者反馈结构的功能，以使第一级放大光纤中的输入光的增益成为上限，从而防止诸如带通破坏的性能的劣化 滤波器发生在位于最后级放大光纤的上游侧的光学部件中。

    Divided-pulse amplification of short pulses
    13.
    发明授权
    Divided-pulse amplification of short pulses 有权
    短脉冲的分频脉冲放大

    公开(公告)号：US08456736B2

    公开(公告)日：2013-06-04

    申请号：US12517092

    申请日：2007-12-03

    申请人： Frank W. Wise ,  Shian Zhou ,  Dimitre G. Ouzounov

    发明人： Frank W. Wise ,  Shian Zhou ,  Dimitre G. Ouzounov

    IPC分类号： H04B10/17 ,  H01S3/10

    CPC分类号： H01S3/0057 ,  H01S3/0085 ,  H01S3/2333

    摘要： To avoid harmful nonlinear effects in the amplification of short optical pulses, an initial pulse is divided into a sequence of lower-energy temporally spaced pulses that are otherwise identical to the original pulse. The low-intensity pulses are amplified and then recombined to create a final amplified output pulse.

    摘要翻译： 为了避免短光脉冲放大中的有害非线性效应，初始脉冲被分为与原始脉冲相同的较低能量时间间隔脉冲序列。 低强度脉冲被放大，然后重新组合以产生最终的放大输出脉冲。

    Control apparatus of optical amplifier
    14.
    发明授权
    Control apparatus of optical amplifier 有权
    光放大器控制装置

    公开(公告)号：US08451532B2

    公开(公告)日：2013-05-28

    申请号：US12573461

    申请日：2009-10-05

    申请人： Taichi Ueki ,  Miki Onaka

    发明人： Taichi Ueki ,  Miki Onaka

    IPC分类号： H04B10/17 ,  H04B10/12

    CPC分类号： H04B10/296

    摘要： A control apparatus of an optical amplifier includes a monitoring section that measures power of light inputted to the optical amplifier, a power-wavelength characteristics variable section that is operable to change a wavelength characteristic of power of the light inputted, a wavelength number decrease recognition section that compares the value of the power of light measured by the monitoring section with a predetermined threshold, and a control section that controls the power-wavelength characteristics variable section when the wavelength number decrease recognition section judges that the value of the power of light falls below the threshold.

    摘要翻译： 光放大器的控制装置包括测量输入到光放大器的光的功率的监视部分，可操作以改变输入的光的功率的波长特性的功率波长特性可变部分，波长数减少识别部分 其将由监视部测量的光的功率值与预定阈值进行比较;以及控制部，当所述波长数减少识别部判断出所述光功率值低于所述阈值时，控制所述功率波长特性变量部 门槛。

    Raman amplifier, optical repeater, and Raman amplification method
    15.
    发明授权
    Raman amplifier, optical repeater, and Raman amplification method 有权

    公开(公告)号：US08437074B2

    公开(公告)日：2013-05-07

    申请号：US13023301

    申请日：2011-02-08

    申请人： Youichi Akasaka ,  Yoshihiro Emori ,  Shu Namiki

    发明人： Youichi Akasaka ,  Yoshihiro Emori ,  Shu Namiki

    IPC分类号： H04B10/17 ,  H01S3/0941 ,  H01S3/13

    CPC分类号： H01S3/302 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/0912 ,  H01S3/094011 ,  H01S3/094015 ,  H01S3/094096 ,  H01S3/10007 ,  H01S3/10015 ,  H01S3/2375 ,  H01S3/2383 ,  H01S2301/04 ,  H04B10/2916

    摘要： A Raman amplifier according to the present invention comprises a plurality of pumping means using semiconductor lasers of Fabry-Perot, DFB, or DBR type or MOPAs, and pumping lights outputted from the pumping means have different central wavelengths, and interval between the adjacent central wavelength is greater than 6 nm and smaller than 35 nm. An optical repeater according to the present invention comprises the above-mentioned Raman amplifier and adapted to compensate loss in an optical fiber transmission line by the Raman amplifier. In a Raman amplification method according to the present invention, the shorter the central wavelength of the pumping light the higher light power of said pumping light. In the Raman amplifier according to the present invention, when a certain pumping wavelength is defined as a first channel, and second to n-th channels are defined to be arranged with an interval of about 1 THz toward a longer wavelength side, the pumping lights having wavelengths corresponding to the first to n-th channels are multiplexed, and an pumping light having a wavelength spaced apart from the n-th channel by 2 THz or more toward the longer wavelength side is combined with the multiplexed light, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n-1)-th and (n-2)-th channels may be multiplexed, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n-2)-th and (n-3)-th channels may be multiplexed, thereby forming the pumping light source.

    Optical pulse shaping method and apparatus
    16.
    发明授权
    Optical pulse shaping method and apparatus 有权
    光脉冲成形方法及装置

    公开(公告)号：US08369017B2

    公开(公告)日：2013-02-05

    申请号：US12460060

    申请日：2009-07-13

    申请人： Christophe Moser ,  Frank Havermeyer

    发明人： Christophe Moser ,  Frank Havermeyer

    IPC分类号： G02B5/18 ,  H01S3/10 ,  H04B10/17

    CPC分类号： G02B27/0927 ,  G02B5/1823 ,  G02B5/32 ,  G02B27/0944

    摘要： The invention disclosed here teaches methods and apparatus for altering the temporal and spatial shape of an optical pulse. The methods correct for the spatial beam deformation caused by the intrinsic DC index gradient in a volume holographic chirped reflective grating (VHCRG).The first set of methods involves a mechanical mean of pre-deforming the VHCRG so that the combination of the deflection caused by the DC index gradient is compensated by the mechanical deformation of the VHCRG. The second set of methods involves compensating the angular deflection caused by the DC index gradient by retracing the diffracted beam back onto itself and by re-diffracting from the same VHCRG. Apparatus for temporally stretching, amplifying and temporally compressing light pulses are disclosed that rely on the methods above.

    摘要翻译： 这里公开的发明教导了用于改变光脉冲的时间和空间形状的方法和装置。 该方法校正了体积全息啁啾反射光栅（VHCRG）中由本征DC指数梯度引起的空间光束变形。 第一组方法涉及到使VHCRG预变形的机械平均值，使得由DC指数梯度引起的偏转的组合由VHCRG的机械变形补偿。 第二组方法包括通过将衍射光束回射回自身并通过从相同的VHCRG重新衍射来补​​偿由DC折射率梯度引起的角度偏转。 公开了依赖于上述方法的用于暂时拉伸，放大和时间压缩光脉冲的装置。

    Pulse-energy-stabilization and first-pulse-suppression optical gain fiber apparatus and method
    17.
    发明授权
    Pulse-energy-stabilization and first-pulse-suppression optical gain fiber apparatus and method 有权
    脉冲能量稳定和第一脉冲抑制光增益光纤装置及方法

    公开(公告)号：US08363312B1

    公开(公告)日：2013-01-29

    申请号：US13013754

    申请日：2011-01-25

    申请人： Eric C. Honea ,  Roy D. Mead ,  John D. Minelly

    发明人： Eric C. Honea ,  Roy D. Mead ,  John D. Minelly

    IPC分类号： H04B10/17 ,  H04B10/12

    CPC分类号： H01S3/06758 ,  H01S3/06712 ,  H01S3/0675 ,  H01S3/09408 ,  H01S3/1003 ,  H01S3/1302 ,  H01S3/1618 ,  H01S3/2333 ,  H01S2301/02 ,  H01S2301/04 ,  H04B10/291

    摘要： In some embodiments, the present invention provides an apparatus and process wherein excess stored optical energy is removed from one or more stages in a fiber-amplifier, in order to stabilize the gain and obtain a constant level of energy per pulse. In some embodiments, a method of the invention includes providing a gain fiber, optically pumping the gain fiber using pump light, amplifying seed-signal pulses having a signal wavelength using the gain fiber to obtain amplified output pulses, and automatically limiting a gain of the gain fiber. In some embodiments, an apparatus of the invention includes a gain fiber, a source of pump light coupled to the gain fiber, a source of seed-signal pulses having a signal wavelength coupled to the gain fiber, wherein the gain fiber outputs amplified signal pulses, and an automatic-gain-control mechanism configured to limit gain of the gain fiber.

    摘要翻译： 在一些实施例中，本发明提供了一种装置和方法，其中从光纤放大器中的一个或多个级中去除多余的存储的光能，以便稳定增益并获得每脉冲恒定的能量水平。 在一些实施例中，本发明的方法包括提供增益光纤，使用泵浦光光学泵浦增益光纤，使用增益光纤放大具有信号波长的种子信号脉冲以获得放大的输出脉冲，并自动限制增益光纤的增益 增益纤维。 在一些实施例中，本发明的装置包括增益光纤，耦合到增益光纤的泵浦光源，具有耦合到增益光纤的信号波长的种子信号脉冲源，其中增益光纤输出放大的信号脉冲 以及被配置为限制增益光纤的增益的自动增益控制机构。

    System and method for combining multiple fiber amplifiers or multiple fiber lasers
    18.
    发明授权
    System and method for combining multiple fiber amplifiers or multiple fiber lasers 有权
    用于组合多个光纤放大器或多个光纤激光器的系统和方法

    公开(公告)号：US08351114B2

    公开(公告)日：2013-01-08

    申请号：US12320681

    申请日：2009-02-02

    申请人： Burke E. Nelson ,  Sami A. Shakir ,  William R. Culver ,  Yuji S. Starcher ,  Jerry W. Hedrick ,  George M. Bates

    发明人： Burke E. Nelson ,  Sami A. Shakir ,  William R. Culver ,  Yuji S. Starcher ,  Jerry W. Hedrick ,  George M. Bates

    IPC分类号： H04B10/17 ,  G02B6/26 ,  G02B6/32

    CPC分类号： G02B6/2835 ,  H01S3/06737 ,  H01S3/06745 ,  H01S3/06754 ,  H01S3/10015 ,  H01S3/1307 ,  H01S3/2383

    摘要： A system for combining multiple fiber amplifiers, or multiple fiber amplifiers. The system includes a fiber combiner with multiple cores for connecting with the multiple fiber amplifiers and for combining the beams of the fiber amplifiers into a single beam. The fiber amplifiers are aligned, tapered, and stretched.A method for combining fiber amplifiers includes emitting a beam from a tapered fiber combiner and transmitting and coupling a portion of the emitted beam back into the fiber combiner via a feedback fiber. The transmission and coupling of the feedback fiber includes mixing the feedback fiber with the output of an auxiliary laser and boosting the feedback fiber by a pre-amplifier. The feedback fiber is split into a plurality of beams by a fiber splitter. The beams are fed into an array of fiber amplifiers and combined with output of the individual fiber amplifiers to form the tapered fiber combiner.

    摘要翻译： 一种用于组合多个光纤放大器或多个光纤放大器的系统。 该系统包括具有多个芯的光纤组合器，用于与多个光纤放大器连接并将光纤放大器的光束组合成单个光束。 光纤放大器对齐，锥形和拉伸。 一种用于组合光纤放大器的方法包括从锥形光纤组合器发射光束，并通过反馈光纤将发射光束的一部分发射和耦合回光纤组合器。 反馈光纤的传输和耦合包括将反馈光纤与辅助激光器的输出进行混合，并通过前置放大器来增强反馈光纤。 反馈光纤被光纤分离器分成多个光束。 光束被馈送到光纤放大器的阵列中并与各个光纤放大器的输出相结合以形成锥形光纤组合器。

    Method and system for maximizing wavelength reuse in optically protected WDM networks
    19.
    发明授权
    Method and system for maximizing wavelength reuse in optically protected WDM networks 有权
    用于在光学保护的WDM网络中最大化波长重用的方法和系统

    公开(公告)号：US08305881B2

    公开(公告)日：2012-11-06

    申请号：US10919618

    申请日：2004-08-17

    申请人： Robert S. Harby ,  David S. Levy ,  Dat D. Ngo ,  James Dorian Sandoz ,  Charles Small

    发明人： Robert S. Harby ,  David S. Levy ,  Dat D. Ngo ,  James Dorian Sandoz ,  Charles Small

    IPC分类号： H04B10/17 ,  H04B10/08 ,  H04B10/12 ,  H04J14/02

    CPC分类号： H04J14/0227 ,  H04J3/085 ,  H04J3/14 ,  H04J14/0226 ,  H04J14/0241 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/0283 ,  H04J14/0295

    摘要： A method and system for maximizing wavelength reuse in an optically protected wavelength-division-multiplexed (WDM) network, the WDM network supporting a plurality of service connections, includes associating service connections supported by non-overlapping paths to form respective service channel groups, and for each service channel group, assigning at least one common wavelength channel for establishing the service connections. In addition, for each of said groups, at least one common wavelength channel is assigned for establishing a shared protection path for the service connections of each of said groups. In addition, the wavelength channels assigned for establishing the shared protection paths for each of the groups may be used for providing service connections for the WDM network when not in use as shared protection paths. However such provisional service connections are dropped when the wavelength channels are needed to establish shared protection paths. Such provisional service connections may be offered at reduced cost.

    摘要翻译： 一种用于在光保护的波分复用（WDM）网络中支持多个服务连接的WDM网络中最大化波长重用的方法和系统包括：将由非重叠路径支持的服务连接相关联以形成相应的服务信道组，以及 对于每个服务信道组，分配用于建立服务连接的至少一个公共波长信道。 此外，对于每个所述组，分配至少一个公共波长信道以建立用于每个所述组的服务连接的共享保护路径。 此外，分配用于为每个组建立共享保护路径的波长信道可用于在不用作共享保护路径时为WDM网络提供服务连接。 然而，当需要波长信道来建立共享保护路径时，这种临时业务连接被丢弃。 这样的临时服务连接可以以降低的成本提供。