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公开(公告)号：US20090214216A1
公开(公告)日：2009-08-27
申请号：US12323715
申请日：2008-11-26
CPC分类号： H04B10/112
摘要： A space-time division multiple-access (STDMA) laser communications (lasercom) system and related techniques. The STDMA system includes a plurality of remote nodes and an STDMA access node which uses precise electronic beam steering and beacons to provide access to each of a plurality of remote access nodes by means of both space and time-division multiple access.
摘要翻译： 时分多址（STDMA）激光通信（lasercom）系统及相关技术。 STDMA系统包括多个远程节点和STDMA接入节点，STDMA接入节点使用精确的电子波束导向和信标通过空间和时分多址接入来提供对多个远程接入节点中的每一个的接入。
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公开(公告)号：US08116632B2
公开(公告)日：2012-02-14
申请号：US12323715
申请日：2008-11-26
CPC分类号： H04B10/112
摘要： A space-time division multiple-access (STDMA) laser communications (lasercom) system and related techniques. The STDMA system includes a plurality of remote nodes and an STDMA access node which uses precise electronic beam steering and beacons to provide access to each of a plurality of remote access nodes by means of both space and time-division multiple access.
摘要翻译： 时分多址（STDMA）激光通信（lasercom）系统及相关技术。 STDMA系统包括多个远程节点和STDMA接入节点，STDMA接入节点使用精确的电子波束导向和信标通过空间和时分多址接入来提供对多个远程接入节点中的每一个的接入。
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公开(公告)号：US20080031627A1
公开(公告)日：2008-02-07
申请号：US11462569
申请日：2006-08-04
IPC分类号： H04J14/02
CPC分类号： G02B6/29395 , G02B6/2931 , G02B6/29311 , G02B6/29313 , G02B6/29383 , G02B6/29386 , G02B6/356 , G02B6/3588
摘要： An optical communication system having nodes that include add/drop units. The add/drop unit includes: a network input port for receiving optical energy having a plurality of different wavelengths from other nodes in the network; a network output port for coupling to destination nodes in the network; an add port for receiving optical energy having the plurality of different wavelengths from a local source for transmission to other nodes in the network; and a drop node for receiving optical energy from other nodes in the network for local processing. A wavelength demultiplexer is included to separate the plurality of wavelengths received by the network input port so that the electronically controllable beam steerer can process them individually. A wavelength multiplexer is included to combine the plurality of wavelengths received from the electronically controlled beam steerer for delivery to the network output port for transmission to other nodes in the network. An electronically controllable beam steerer is provided for receiving the optical energy having the plurality of different wavelengths at the network input port and the optical energy having the plurality of different wavelengths from the add port for selectively: directing the optical energy having the plurality of different wavelengths at the network input port to the network output port or to the drop port; and directing the optical energy having the plurality of different wavelengths from the add port to the network output port. The disclosed add/drop unit supports one or a plurality of add, input, output, and drop ports.
摘要翻译： 具有包括添加/分出单元的节点的光通信系统。 所述分插单元包括：网络输入端口，用于从所述网络中的其他节点接收具有多个不同波长的光能; 用于耦合到网络中的目的地节点的网络输出端口; 用于从本地源接收具有多个不同波长的光能以用于传输到网络中的其他节点的添加端口; 以及用于从网络中的其他节点接收光能以进行本地处理的丢弃节点。 包括波长解复用器以分离由网络输入端口接收的多个波长，使得电子可控射束转向器可以单独处理它们。 包括波长多路复用器以组合从电子控制的光束转向器接收的多个波长用于传送到网络输出端口以传输到网络中的其他节点。 提供了一种电子可控的光束转向器，用于接收在网络输入端口处具有多个不同波长的光能，并且具有来自加法端口的多个不同波长的光能量用于选择性地：引导具有多个不同波长的光能 在网络输入端口到网络输出端口或掉电端口; 以及将具有多个不同波长的光能量从所述添加端口引导到所述网络输出端口。 所公开的添加/删除单元支持一个或多个添加，输入，输出和丢弃端口。
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公开(公告)号：US4284329A
公开(公告)日：1981-08-18
申请号：US51557
申请日：1979-06-25
申请人： Irl W. Smith , Terry A. Dorschner
发明人： Irl W. Smith , Terry A. Dorschner
CPC分类号： H01S3/083 , G01C19/667
摘要： A four-frequency laser gyroscope system having improved accuracy is constructed using a single solid block of low thermal coefficient of expansion material. A four-segment nonplanar propagation path provides a first frequency splitting. A second splitting is provided by a Faraday rotator having a thin slab of rare earth-doped glass positioned within an aperture in a permanent magnet. A narrow angle of incidence is provided for the beams of incident upon the output mirror to prevent cross coupling between beams within the output optics structure. Blocking the gaseous flow path reduces output frequency drift caused by contamininating particles.
摘要翻译： 使用具有低热膨胀系数的单个固体块来构造具有改进的精度的四频激光陀螺仪系统。 四段非平面传播路径提供第一分频。 第二次分裂由法拉第转子提供，该旋转器具有位于永磁体中的孔内的稀土掺杂玻璃薄板。 为入射在输出镜上的光束提供窄入射角，以防止输出光学结构内的光束之间的交叉耦合。 阻塞气流路径减少了由污染颗粒引起的输出频率漂移。
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5.发明申请METHOD AND APPARATUS FOR MAINTAINING A COHERENT COMBINED BEAM DURING ARBITRARY STEERING 有权在仲裁转向下维持相干组合梁的方法和装置公开(公告)号：US20090142073A1
公开(公告)日：2009-06-04
申请号：US12325241
申请日：2008-11-30
申请人： Irl W. Smith , Kirk L. Fisher , Evelyn W. Kapusta
发明人： Irl W. Smith , Kirk L. Fisher , Evelyn W. Kapusta
IPC分类号： H04B10/04
CPC分类号： H04B10/50
摘要： A method and apparatus for accounting for phase differences in a transmit path of an optical system is provided. A transmit control system nullifies phase errors in signals propagating from a coherent source to phase samplers and back to a transmitter sensor. A small time-dependent length modulation is applied to a feed fiber of each aperture and this modulation enables a hill-climbing servo loop to increase, or in some cases even maximize, a detected intensity. This results in a particular relationship between the phases at all the phase-sampling points. The optical system is then calibrated so that this relationship corresponds to in-phase beams when the optical system is aimed at boresight.
摘要翻译： 提供了一种用于计算光学系统的发送路径中的相位差的方法和装置。 发射控制系统使从相干源传播到相位采样器并返回到发射机传感器的信号中的相位误差消失。 对于每个孔径的进给纤维施加小的时间依赖长度调制，并且该调制使得爬山伺服环路能够增加或者在一些情况下甚至最大化检测到的强度。 这导致所有相位采样点之间的相位之间的特定关系。 然后校准光学系统，使得当光学系统瞄准视轴时，该关系对应于同相光束。
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公开(公告)号：US20080247026A1
公开(公告)日：2008-10-09
申请号：US12137930
申请日：2008-06-12
申请人： Irl W. Smith
发明人： Irl W. Smith
IPC分类号： G02F1/01
CPC分类号： G02B6/2713 , G02B6/2773 , G02B6/29302 , G02B6/29395 , G02B6/29398 , G02B6/4246
摘要： An optical diplexer having a birefringent crystal for providing substantially a whole number of wavelength retardation to first optical energy having said first polarization type, and having a first wavelength, fed to a first end of said crystal, and exiting a second end of said crystal with said first polarization type and said first wavelength and for providing substantially an odd integer number of half wavelength retardation to second optical energy having said first polarization type, having a second wavelength, fed to said second end of said crystal and exiting said first end of said crystal with said second polarization type and said second wavelength. The system includes an electronically actuated polarization aligner for adjusting phase retardation of the second energy fed to the second end of the crystal prior to such second energy entering the second end of the birefringent crystal.
摘要翻译： 一种具有双折射晶体的光学双工器，用于向具有所述第一极化类型的第一光能提供基本上一定数量的波长延迟，并且具有馈送到所述晶体的第一端并且离开所述晶体的第二端的第一波长，并且离开所述晶体的第二端， 所述第一极化类型和所述第一波长，并且用于向具有第二波长的具有第二波长的具有所述第一偏振型的第二光能提供基本上奇数整数个半波长延迟，馈送到所述晶体的所述第二端并离开所述第一波长的所述第一端 具有所述第二极化类型和所述第二波长的晶体。 该系统包括电子致动的偏振对准器，用于在进入双折射晶体的第二端的这种第二能量之前调节馈送到晶体的第二端的第二能量的相位延迟。
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公开(公告)号：US5654716A
公开(公告)日：1997-08-05
申请号：US622838
申请日：1996-03-27
申请人： Mark J. Donovan , James C. Patrikis , Irl W. Smith
发明人： Mark J. Donovan , James C. Patrikis , Irl W. Smith
CPC分类号： G01S7/4004 , G01R23/02 , G01S7/4008 , G01S7/4021
摘要： A low cost automatic frequency control system measures short duration radio frequencies with high a degree of accuracy within 0.5 MHz. The system is programmable to allow applicability over a wide range of frequencies within the required accuracy and various signal durations. The system includes circuits to digitize the source signal to a digital pulse train and asynchronously sample the pulse train to obtain a count of the positive edges of the pulses over a sufficient number of samples. A microprocessor computes the statistical average of the count and accurately determines the frequency of the source signal. The system further includes a feedback path to implement correction to the source signal based on the measured frequency.
摘要翻译： 低成本自动频率控制系统测量0.5 MHz内高精度的短时射频。 该系统是可编程的，以允许在所需精度和各种信号持续时间内的宽频率范围内的适用性。 该系统包括将源信号数字化为数字脉冲串的电路，并且异步采样脉冲序列以在足够数量的采样上获得脉冲的正边沿的计数。 微处理器计算计数的统计平均值，并准确地确定源信号的频率。 该系统还包括基于测量的频率来实现对源信号的校正的反馈路径。
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公开(公告)号：US5333046A
公开(公告)日：1994-07-26
申请号：US412457
申请日：1982-08-27
CPC分类号： G01C19/665
摘要： A ring laser gyro uses a nonplanar path having at least one plane of mirror symmetry and two pathlength control mirrors in order to reduce scatter variations occurring during the operation of the laser gyro. The mirrors used to produce such path are fixed to an isotropic supporting block having passages therein that define the path segments and the mirrors are moved out or in by the expansion or contraction of the block. The two pathlength control mirrors are disposed diagonally opposite each other on the plane of mirror symmetry, and are placed on substrates whose positions are controllable, each substrate being coupled to means for controlling the positions of the substrates as a function of the pathlength. With such a mirror configuration, the pathlength may be held constant by a suitable control means and the relative movement of the mirrors constrains movement, with respect to the mirrors, of the beams circulating in the path to directions perpendicular to the planes of incidence on the mirrors. This causes the beams to sample substantially the same scatter points, normally present on the mirror surfaces, with substantially the same phase throughout the range of movement of the beams.
摘要翻译： 环形激光陀螺仪使用具有至少一个镜面对称平面的非平面路径和两个光程长度控制反射镜，以便减少在激光陀螺仪的操作期间发生的散射变化。 用于产生这种路径的反射镜被固定到各向同性的支撑块，其具有限定路径段的通道，并且反射镜被移出或通过块的膨胀或收缩移动。 两个光路长度控制反射镜在镜面对称平面上彼此对角地相对设置，并且被放置在其位置可控的衬底上，每个衬底被耦合到用于根据光程长度来控制衬底的位置的装置。 通过这样的镜子配置，通过合适的控制装置可以使路径长度保持不变，并且反射镜的相对运动相对于反射镜约束沿路径中循环的光束相对于垂直于入射平面的方向的方向的运动 镜子。 这导致光束在光束的整个移动范围内基本上相同的相位散射点（通常存在于镜面上）具有基本上相同的相位。
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公开(公告)号：US5004343A
公开(公告)日：1991-04-02
申请号：US263965
申请日：1988-10-27
申请人： Terry A. Dorschner , Irl W. Smith
发明人： Terry A. Dorschner , Irl W. Smith
CPC分类号： H01S3/083 , G01C19/668
摘要： A laser gyro system wherein a plurality of nonplanar ring laser gyros are nested within a common supporting block of material. The nonplanar ring laser gyros have a ring path whose circumscribing volume has a size of the order of the volume of the supporting block, each ring path utilizing a portion of the volume unused by the other. In one embodiment, a cubic block contains two orthogonal tetrahedral ring laser gyros. The two rings intersect and share a common gas envelope. In another embodiment, the supporting block contains two orthohedral ring laser paths.
摘要翻译： 一种激光陀螺仪系统，其中多个非平面环形激光陀螺仪嵌套在共同的支撑材料块内。 非平面环形激光陀螺仪具有环形路径，其环绕体积具有支撑块的体积顺序的大小，每个环形路径利用另一个未使用的体积的一部分。 在一个实施例中，立方块包含两个正交的四面环激光陀螺仪。 两个环相交并共享公共气体信封。 在另一个实施例中，支撑块包含两个正对面环形激光路径。
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公开(公告)号：US4141651A
公开(公告)日：1979-02-27
申请号：US758223
申请日：1977-01-10
申请人： Irl W. Smith , Terry A. Dorschner
发明人： Irl W. Smith , Terry A. Dorschner
CPC分类号： G01C19/667
摘要： A four frequency laser gyroscope system having a rugged and compact output structure for producing output signals representing the frequency differences between counter-circulating wave pairs circulating as two beams within the gyroscope cavity. A partially transmitting dielectric mirror forms both one of the cavity reflectors and the means for extracting a small portion of each beam. The two extracted beams are combined on a beam splitter. Both the transmitted and reflected beams from the output of the beam splitter, each containing waves of all four frequencies, are utilized. Each resultant beam is then polarization discriminated to extract the desired signal content. The entire structure is adapted for rigid mechanical coupling and may be constructed to have a small size.
摘要翻译： 一种具有坚固且紧凑的输出结构的四频激光陀螺仪系统，用于产生表示作为陀螺仪腔内的两个光束循环的反循环波对之间的频率差的输出信号。 部分透射的介质镜形成腔反射器中的一个和用于提取每个光束的小部分的装置。 两个提取的光束组合在分束器上。 来自波束分离器的输出的每个包含所有四个频率的波的发射和反射波束都被利用。 然后对每个合成的光束进行极化鉴别，以提取所需的信号内容。 整个结构适用于刚性机械联轴器，并且可以构造成具有小尺寸。
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