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138 条记录 (耗时 0.015 秒)

    Polarization mode dispersion characterization apparatus and method
    41.
    发明授权
    Polarization mode dispersion characterization apparatus and method 失效
    极化模式色散表征装置及方法

    公开(公告)号：US06646727B2

    公开(公告)日：2003-11-11

    申请号：US10147149

    申请日：2002-05-16

    申请人： Bahaa E. A. Saleh ,  Malvin C. Teich ,  Alexander Sergienko ,  Steven J. Bielagus ,  Milan J. Merhar

    发明人： Bahaa E. A. Saleh ,  Malvin C. Teich ,  Alexander Sergienko ,  Steven J. Bielagus ,  Milan J. Merhar

    IPC分类号： G01N2100

    CPC分类号： H04B10/2569 ,  G02B6/2861 ,  G02B6/3528 ,  G02B6/3546 ,  G02B6/3592

    摘要： The invention relates to an entangled-photon apparatus capable of measuring particular characteristics of an optical element, device or channel. Specifically, the apparatus and a method of using said apparatus to measure polarization mode dispersion in an optical communications fiber is disclosed. The apparatus includes a source of entangled photons, which are injected into the device under test, and a quantum interference device for determining the state of entanglement of said photons after they pass through the device. The quantum interference device includes a variable, polarization-specific delay element that is incremented to null out polarization mode dispersion in the device under test, and a wavelength demultiplexer/array detector that permits simultaneous measurements across a wide wavelength band. A second preferred embodiment of the invention and method is suitable for characterizing PMD in-situ that is, PMD measurements can be made while an optical fiber is in use for optical communications.

    摘要翻译： 本发明涉及能够测量光学元件，装置或通道的特定特性的纠缠光子装置。 具体地，公开了使用所述装置测量光通信光纤中的偏振模色散的装置和方法。 该装置包括被注入到被测器件中的纠缠光子源和用于确定所述光子通过器件后的纠缠状态的量子干涉器件。 量子干涉装置包括可变的偏振专用延迟元件，该延迟元件递增到被测器件中的零极化模式色散，以及允许跨宽波段同时测量的波长解复用器/阵列检测器。 本发明的第二个优选实施例和方法适用于现场表征PMD，即在光纤用于光通信时可进行PMD测量。

    Fast wavelength-selective switch elements and switch matrices
    43.
    发明申请
    Fast wavelength-selective switch elements and switch matrices 失效
    快速波长选择开关元件和开关矩阵

    公开(公告)号：US20030161566A1

    公开(公告)日：2003-08-28

    申请号：US10079522

    申请日：2002-02-22

    申请人： LYNX PHOTONIC NETWORKS INC.

    发明人： Aviv Frommer ,  Ben-Zion Kopelovitz

    IPC分类号： G02B006/00 ,  G02B006/35

    CPC分类号： G02F1/3137 ,  G02B6/3546 ,  G02B6/3592 ,  G02F1/3136 ,  G02F2203/055 ,  G02F2203/07

    摘要： Ultra fast, compact wavelength-selective 2null2 optical switches based on polarization splitters and preferably electro-optical polarization converters, and switch matrices based on such switches. The switches and switch matrices are preferably implemented on electro-optical substrates using planar light-wave circuit technology. Switch designs include switches comprised of two polarization splitters and two polarization converters, and a switch comprised of one polarization splitter and two polarization converters. In a preferred embodiment, a switch comprises a TE-barring polarization splitter, a TM-barring polarization splitter, and two electro-optical wavelength-selective polarization converters connected in parallel between the TE- and TM-barring polarization splitters, and is implemented on an electro-optical substrate such as InP, GaAs, LiNbO3 or LiTaO3 using planar lightwave circuit technology. A preferred embodiment of a switch matrix for connecting i optical inputs to i monitoring outputs and to j optical outputs comprises a plurality of inullj wavelength-selective 2null2 optical switches arranged in i rows and j columns, each optical switch including a TE-barring polarization splitter, a TM-barring polarization splitter, and two wavelength-selective polarization converters connected in parallel between the TE- and TM-barring polarization splitters. The switch matrix is also preferably implemented using planar lightwave circuit technology.

    摘要翻译： 基于极化分离器，优选电光偏振转换器的超快速，紧凑的波长选择性2x2光开关以及基于这种开关的开关矩阵。 开关和开关矩阵优选地使用平面光波电路技术在电光基板上实现。 开关设计包括由两个偏振分离器和两个偏振转换器组成的开关，以及包括一个偏振分离器和两个偏振转换器的开关。 在一个优选实施例中，开关包括TE限制性偏振分离器，TM-限制偏振分离器和两个并联在TE-和TM-限制极化分离器之间的电光波长选择性偏振转换器，并且被实现在 使用平面光波电路技术的诸如InP，GaAs，LiNbO 3或LiTaO 3的电光基板。 用于将i个光输入连接到i个监控输出和j个光输出的开关矩阵的优选实施例包括以i行和j列布置的多个ixj波长选择性2×2光开关，每个光开关包括一个TE限制性偏振分离器 ，TM-限制性偏振分离器和两个波长选择性偏振转换器并联连接在TE-和TM-限制极化分离器之间。 开关矩阵也优选地使用平面光波电路技术实现。

    Optical isolator with low polarization mode dispersion
    44.
    发明授权
    Optical isolator with low polarization mode dispersion 失效
    具有低偏振模色散的光隔离器

    公开(公告)号：US5557692A

    公开(公告)日：1996-09-17

    申请号：US548820

    申请日：1995-10-26

    申请人： Jing-Jong Pan ,  Ming Shih

    发明人： Jing-Jong Pan ,  Ming Shih

    IPC分类号： G02B5/30 ,  G02B6/26 ,  G02B6/35 ,  G02B27/28 ,  G02F1/01 ,  G02F1/09 ,  G02F1/13 ,  G02F1/1333 ,  G02F1/13363 ,  G02F1/313

    CPC分类号： G02B5/3083 ,  G02B27/28 ,  G02B6/2746 ,  G02F1/093 ,  G02F1/1326 ,  G02B6/3552 ,  G02B6/3592 ,  G02B6/3594 ,  G02F1/13363 ,  G02F2203/48 ,  Y10S372/703

    摘要： The present invention provides for a compensating element in the form of a birefringent plate in an optical isolator which uses a first GRIN lens to collimate the light signal from an input optical fiber, a first birefringent polarizer wedge, an optical Faraday rotator, a second birefringent polarizer wedge, and a second GRIN lens to recollimate the light signal to an output optical fiber. Polarization mode dispersion through said optical isolator is substantially reduced by arranging the fast optical axis of the plate to be perpendicular to the fast optical axis of the polarizer on the same side of the Faraday rotator as the plate and selecting the thickness of the plate in a predetermined manner. The present invention also allows for minimization of "walk-off", which also contributes to some polarization mode dispersion through the isolator.

    摘要翻译： 本发明提供一种光隔离器中双折射板形式的补偿元件，其使用第一GRIN透镜来校准来自输入光纤的光信号，第一双折射偏振片，光法拉第转子，第二双折射 偏振片和第二GRIN透镜，以将光信号重新聚光到输出光纤。 通过将板的快速光轴布置在与板的法拉第旋转器的同一侧上的偏振器的快速光轴上，并且选择板的厚度，从而大大减少了通过所述光隔离器的偏振模色散 预先确定的方式。 本发明还允许“走走”最小化，这也有助于通过隔离器的一些偏振模式色散。

    Optical bypass switch
    45.
    发明授权
    Optical bypass switch 失效
    光旁路开关

    公开(公告)号：US4961620A

    公开(公告)日：1990-10-09

    申请号：US455200

    申请日：1989-12-20

    申请人： William D. Uken ,  Akira Tomita

    发明人： William D. Uken ,  Akira Tomita

    IPC分类号： G02B26/08 ,  G02B6/35 ,  G02B6/42

    CPC分类号： G02B6/3562 ,  G02B6/35 ,  G02B6/3502 ,  G02B6/4274 ,  G02B6/4289 ,  G02B6/3542 ,  G02B6/3546 ,  G02B6/3572 ,  G02B6/3582 ,  G02B6/3592 ,  G02B6/3594 ,  G02B6/3598

    摘要： An optical bypass switch includes a normal state and a bypass state, a transmission optical fiber having a signal withdrawn therefrom and injected thereto in its normal state so as to be capable of use in a ring or bus architecture. In the bypass state of the switch, the transmission optical fiber is substantially disengaged so that a signal being transmitted thereby can bypass the switch, and in this state optical fibers connected to a transmitter and a receiver of the bypass switch are maintained in a bent attitude so as to allow signals to be withdrawn and injected thereinto. A loop back path, e.g. a connector optical fiber, is provided which allows a path between the transmitter and the receiver to be completed in the bypass state of the bypass switch, and logic circuitry is provided for analyzing signals detected by the receiver which should have originated from the transmitter for evaluating a state of operation of the transmitter, receiver, and connecting means therefor. Whenever the logic circuitry detects a malfunction in any of these elements, e.g. the transmitter, the receiver and connecting structure therefor, the optical bypass switch is kept in its bypass state and prevented from re-engaging the transmission fiber so as to prevent the bypass switch from optically coupling to the transmission fiber when its electro-optic elements are not functioning properly.

    摘要翻译： 光旁路开关包括正常状态和旁路状态，传输光纤具有从其退出的信号并以其正常状态注入，以便能够在环形或总线结构中使用。 在交换机的旁路状态下，传输光纤基本上脱离，从而传输的信号可以绕过开关，并且在这种状态下，连接到旁路开关的发射器和接收器的光纤被保持在弯曲姿态 以便允许信号被取出并注入其中。 循环路径，例如 提供连接器光纤，其允许在旁路开关的旁路状态下完成发射机和接收机之间的路径，并且提供逻辑电路用于分析由接收机检测到的信号，该接收机应该源自发射机，用于评估 发送器，接收器及其连接装置的操作状态。 每当逻辑电路检测到任何这些元件中的故障，例如， 发射器，接收器和连接结构，光旁路开关保持在其旁路状态，并防止重新接合传输光纤，以防止旁路开关在其电光元件为 不能正常工作

    Multiple port optical fiber switch
    46.
    发明授权
    Multiple port optical fiber switch 失效
    多端口光纤交换机

    公开(公告)号：US4634239A

    公开(公告)日：1987-01-06

    申请号：US637631

    申请日：1984-08-03

    申请人： Carl F. Buhrer

    发明人： Carl F. Buhrer

    IPC分类号： G02B6/35 ,  G02B26/08

    CPC分类号： G02B6/3524 ,  G02B6/3528 ,  G02B6/3546 ,  G02B6/3582 ,  G02B6/3592

    摘要： A multiple port electromechanical optical fiber switch provides for the exchange redirection of one common optical path with one of several other optical paths through the switch. It is particularly useful when one standby laser transmitter must be quickly substituted for any single failed transmitter among a group of several actively operating transmitters. A prism for exchanging the optical paths of two initially parallel beams by means of four refractions at their entry and exit points and at least two internal reflections per beam within the prism is set forth in modified rhombic form with two additional parallel facets that transmit undeflected in the deactivated position one of two beams so as to minimize required shift distance to the prism activated position where it exchanges the optical paths of both parallel beams.

    摘要翻译： 多端口机电光纤交换机提供一个公共光路与通过交换机的几个其它光路之一的交换重定向。 当一个备用激光发射机必须快速地替代几组主动操作的发射机中的任何一个故障发射机时，这是特别有用的。 用于通过在其入射点和出射点处的四个折射和在棱镜内的每个光束的至少两个内部反射来交换两个初始平行光束的光路的棱镜以修改的菱形形式提出，其具有两个附加的平行面， 两个光束之一的去激活位置，以便最小化与棱镜激活位置的所需偏移距离，其中它交换两个平行光束的光路。

    LARGE SCALE OPTICAL SWITCH USING ASYMMETRIC 1X2 ELEMENTS
    48.
    发明申请
    LARGE SCALE OPTICAL SWITCH USING ASYMMETRIC 1X2 ELEMENTS 审中-公开

    公开(公告)号：US20180203190A1

    公开(公告)日：2018-07-19

    申请号：US15920590

    申请日：2018-03-14

    申请人： Nistica, Inc.

    发明人： JEFFERSON L. WAGENER

    IPC分类号： G02B6/35 ,  G02B6/032

    CPC分类号： G02B6/3546 ,  G02B6/032 ,  G02B6/3504 ,  G02B6/3556 ,  G02B6/356 ,  G02B6/3584 ,  G02B6/359 ,  G02B6/3592 ,  G02B6/3596

    摘要： An optical switching arrangement includes a plurality of input and output waveguides. Each of the input waveguides has a first plurality of 1×2 optical switches associated therewith and extending therealong. Each of the output waveguides has a second plurality of 1×2 optical switches associated therewith and extending therealong. Each of the first and second plurality of optical switches is selectively switchable between a through-state and a cross-state. The input and output waveguides are arranged such that optical losses arising for any wavelength of light only depend on a length of segments of the input and output waveguides located between adjacent ones of the 1×2 optical switches. Each of the first plurality of optical switches associated with each of the input waveguides is optically coupled to one of the second plurality of optical switches in a different one of the output waveguides when both optical switches are in the cross-state.

    Large scale optical switch using asymmetric 1×2 elements
    50.
    发明授权
    Large scale optical switch using asymmetric 1×2 elements 有权

    公开(公告)号：US09778421B2

    公开(公告)日：2017-10-03

    申请号：US14883051

    申请日：2015-10-14

    申请人： NISTICA, INC.

    发明人： Jefferson L. Wagener

    IPC分类号： G02B6/35 ,  G02B6/032

    CPC分类号： G02B6/3546 ,  G02B6/032 ,  G02B6/3504 ,  G02B6/3556 ,  G02B6/356 ,  G02B6/3584 ,  G02B6/359 ,  G02B6/3592 ,  G02B6/3596

    摘要： An optical switching arrangement includes a plurality of input and output waveguides. Each of the input waveguides has a first plurality of 1×2 optical switches associated therewith and extending therealong. Each of the output waveguides has a second plurality of 1×2 optical switches associated therewith and extending therealong. Each of the first and second plurality of optical switches is selectively switchable between a through-state and a cross-state. The input and output waveguides are arranged such that optical losses arising for any wavelength of light only depend on a length of segments of the input and output waveguides located between adjacent ones of the 1×2 optical switches. Each of the first plurality of optical switches associated with each of the input waveguides is optically coupled to one of the second plurality of optical switches in a different one of the output waveguides when both optical switches are in the cross-state.