公开(公告)号：US06795655B1

公开(公告)日：2004-09-21

申请号：US09707901

申请日：2000-11-08

申请人： Vladimir G. Sidorovich ,  Aleksei A. Leshev ,  Valery V. Ragulsky ,  Mikhail A. Sadovnikov ,  Mikhail V. Vasiliev ,  Vladimir P. Vasiliev

发明人： Vladimir G. Sidorovich ,  Aleksei A. Leshev ,  Valery V. Ragulsky ,  Mikhail A. Sadovnikov ,  Mikhail V. Vasiliev ,  Vladimir P. Vasiliev

IPC分类号： H04B1000

CPC分类号： H04B10/1125 ,  H04B10/1149 ,  H04B10/40

摘要： A free-space optical communication system utilizes an optical repeater system, which is installed between transmitting terminals and receiving terminals. Each optical receiver of the repeater system connects via a separate optical beam with one or more of the transmitting terminals. Two or more optical transmitters of the repeater system preferably communicate with each of the receiving terminals. Modules of the repeater system are spatially separated far enough from each other to prevent cross-talk between information on the beams, either at the receivers of the repeating system or at the receiving terminals. Receiving elements in the repeater system and/or in the destination receiving system preferably convert angular beam separation into spatial resolution between beam detectors.

摘要翻译： 自由空间光通信系统利用安装在发射终端和接收终端之间的光中继器系统。 中继器系统的每个光接收机经由单独的光束与一个或多个发送终端相连。 中继器系统的两个或更多个光发射机优选地与每个接收终端进行通信。 中继器系统的模块在空间上分离得足够远，以防止在重复系统的接收机处或在接收终端处的波束上的信息之间的串扰。 中继器系统和/或目的地接收系统中的接收元件优选地将角波束分离转换成波束检测器之间的空间分辨率。

公开(公告)号：US06788901B2

公开(公告)日：2004-09-07

申请号：US09847652

申请日：2001-05-03

申请人： Vladimir G. Sidorovich ,  Aleksei A. Leshev ,  Valery V. Ragulsky ,  Mikhail V. Vasiliev ,  Vladimir P. Vasiliev

发明人： Vladimir G. Sidorovich ,  Aleksei A. Leshev ,  Valery V. Ragulsky ,  Mikhail V. Vasiliev ,  Vladimir P. Vasiliev

IPC分类号： H04B1000

CPC分类号： H04B10/11 ,  G02B27/48 ,  H04B10/2581

摘要： The inventive beam forming technique enables use of multimode optical fibers to couple a modulated optical beam from a radiation source to an optical emitting antenna, for free-space communications. The disclosure teaches a methodology for determining the angular and frequency spectrum parameters of the optical energy applied to the fiber as well as the parameters of the fiber so as to smooth speckle-pattern caused by multimode interference and to provide a speckle-pattern contrast at or below a maximum value at which free-space communication is most efficient.

摘要翻译： 本发明的波束形成技术使得能够使用多模光纤将来自辐射源的调制光束耦合到发光天线，用于自由空间通信。 本公开教导了一种用于确定施加到光纤的光能的角度和频谱参数以及光纤的参数的方法，以便平滑由多模干涉引起的散斑图案，并且在或在其上提供斑纹图案对比度 低于自由空间通信最有效的最大值。

公开(公告)号：US06829439B1

公开(公告)日：2004-12-07

申请号：US09705936

申请日：2000-11-06

申请人： Vladimir G. Sidorovich ,  Aleksei A. Leshev ,  Valery V. Ragulsky ,  Mikhail A. Sadovnikov ,  Mikhail V. Vasiliev ,  Vladimir P. Vasiliev

发明人： Vladimir G. Sidorovich ,  Aleksei A. Leshev ,  Valery V. Ragulsky ,  Mikhail A. Sadovnikov ,  Mikhail V. Vasiliev ,  Vladimir P. Vasiliev

IPC分类号： H04B1000

CPC分类号： H04B10/114 ,  H04B10/2503

摘要： Free-space optical communication uses multibeam communications, for example between a base station and multiple remote stations. To improve efficiency and reduce complexity, the base station transmitter utilizes a single wide-angle objective lens for all of the optical beams' radiation sources. The optical radiation sources are provided with fiberoptic transmitting pigtails with output ends installed on a curved surface in relation to the single wide-angle objective lens at locations in the areas optically conjugated with the remote subscriber receivers. In a system for two-way communication, optical receivers are provided with fiberoptic receiving pigtails with input ends positioned on the curved surface at locations relative to the wide-angle objective lens, which are optically conjugated with the remote subscriber radiation sources. In the preferred embodiments, the mountings of the output and input ends of the transmitting and the receiving pigtails enable their movement along the curved surface as well as along an optical beam axis. Also, a preferred embodiment of the optical system enables movement of the wide angle objective lens together with the output and input ends of the transmitting and the receiving pigtails about horizontal and vertical axes.

摘要翻译： 自由空间光通信使用多波束通信，例如在基站和多个远程站之间。 为了提高效率和降低复杂性，基站发射机对所有光束的辐射源使用单个广角物镜。 光辐射源设置有光纤传输尾纤，其输出端安装在与远程用户接收器光学共轭的区域中相对于单个广角物镜的弯曲表面上。 在用于双向通信的系统中，光接收器设置有光纤接收尾纤，其输入端位于相对于广角物镜的位置的弯曲表面上，该广角物镜与远程用户辐射源光学共轭。 在优选实施例中，发射和接收尾纤的输出端和输入端的安装使得它们能够沿着弯曲表面以及沿光束轴线移动。 此外，光学系统的优选实施例能够使广角物镜与发射和接收尾纤的输出端和输入端围绕水平轴和垂直轴移动。

公开(公告)号：US07079774B2

公开(公告)日：2006-07-18

申请号：US09983227

申请日：2001-10-23

申请人： Vladimir G. Sidorovich ,  Aleksei A. Leshev ,  Valery V. Ragulsky

发明人： Vladimir G. Sidorovich ,  Aleksei A. Leshev ,  Valery V. Ragulsky

IPC分类号： H04B10/00

CPC分类号： H04B10/1149

摘要： A free-space optical communication system serves transmit/receive subscriber terminals. Each subscriber terminal includes a photo-detector and one or more sources of modulated radiation. A base terminal comprises sources of modulated optical radiation intended for the subscriber terminals and a receiving system for receiving modulated radiation from the subscriber terminals. At the base terminal, and preferably at each subscriber terminal, each source has an associated beam shaping device. The receiving system includes photo-detectors and a shared wide-angle objective implemented as a single lens. Within the base terminal, the objective lens is optically coupled only to the photo-detectors of the receiving system, and the beam shaping devices at that terminal do not have common optical elements with the lens or with each other. The preferred embodiment provides automatic stabilization in relation to local vertical direction and uses multimode fibers having specific parameters to supply radiation from the sources to the beam shaping devices.