System for passive scrambling and unscrambling of an optical signal
    54.
    发明申请
    System for passive scrambling and unscrambling of an optical signal 有权
    无源加扰和光信号解扰的系统

    公开(公告)号:US20080285753A1

    公开(公告)日:2008-11-20

    申请号:US11804387

    申请日:2007-05-18

    IPC分类号: H04K1/00

    CPC分类号: H04B10/85 H04B10/2581

    摘要: A system for passively scrambling and unscrambling a, pulse optical signal transmitted through a multi-mode optical fiber is provided. The system includes a scrambling unit connected between a signal receiving end of said transmission fiber and an optical signal source that includes an optical fiber which creates a differential delay between two groups of optical modes of the signal that is at least one bit period long such that said optical signal is passively scrambled, and an unscrambling unit connected to a signal transmitting end of said transmission fiber having an optical fiber that counteracts said differential delay between said two groups of optical modes of the signal such that said optical signal is passively unscrambled. The scrambling unit optical fiber has an alpha profile with a complementary perturbation that creates the differential delay between two groups of optical modes of the signal, and the unscrambling unit optical fiber has an alpha profile with reversal complementary perturbation that counteracts the differential delay between said two groups of optical modes of the signal. Alternatively, the scrambling and unscrambling units may have the combination of a mode splitter that splits the signal into two different groups of optical modes, and a pair of optical fibers that conduct the two groups of optical modes in parallel, the fibers being of different lengths to create or to counteract a differential delay in the two groups of modes.

    摘要翻译: 提供一种用于被动加扰和解扰通过多模光纤传输的脉冲光信号的系统。 该系统包括连接在所述传输光纤的信号接收端和光信号源之间的加扰单元,所述光信号源包括光纤,该光纤在至少一位周期长的信号的两组光模之间产生差分延迟,使得 所述光信号被无源加扰,并且一个解扰单元连接到具有光纤的所述传输光纤的信号发送端,该光纤抵消所述信号的所述两组光模之间的所述差分延迟,使得所述光信号被被动地解扰。 加扰单元光纤具有具有互补扰动的α分布,其产生信号的两组光模式之间的差分延迟,并且解扰单元光纤具有反转互补扰动的α分布,其抵消所述两个 信号组的光模式。 或者,加扰和解扰单元可以具有将信号分解成两个不同组的光模式的模式分离器的组合,以及并行地传导两组光学模式的一对光纤,纤维具有不同的长度 以创建或抵消两组模式中的差分延迟。

    Optimized birefringent fiber switch
    55.
    发明授权
    Optimized birefringent fiber switch 失效
    优化的双折射光纤开关

    公开(公告)号:US5966479A

    公开(公告)日:1999-10-12

    申请号:US983083

    申请日:1997-12-22

    IPC分类号: G02F1/35 G02B6/26

    CPC分类号: G02F1/3515

    摘要: An optical fiber switch in accordance with the present invention includes an optical fiber, a gate signal generating system, and a coupling system. The optical fiber has a birefringence between 10.sup.-5 and 10.sup.-6 and an effective area of at least 40 square microns. The generating system generates a gating signal having a power level which induces non-linear birefringence in the optical fiber causing an input signal in the optical fiber to switch polarization modes. The coupling system couples the input signal and the gating signal into the optical fiber. The optical fiber in the optical switch is designed to minimize non-linear effects which would degrade an input signal in the optical fiber switch. In particular, the optical fiber switch is designed to reduce the amount of power required by the gating signal to switch the input signal in the optical fiber, thus reducing the possibility of the fiber fuse and the generation of higher order solitons through Raman effects.

    摘要翻译: PCT No.PCT / US97 / 11698 Sec。 371 1997年12月22日第 102(e)日期1997年12月22日PCT 1997年7月1日PCT公布。 出版物WO98 / 01780 日期1998年1月15日根据本发明的光纤开关包括光纤,门信号发生系统和耦合系统。 光纤的双折射在10-5与10-6之间,有效面积至少为40平方微米。 发电系统产生具有在光纤中引起非线性双折射的功率电平的门控信号,导致光纤中的输入信号切换偏振模式。 耦合系统将输入信号和门控信号耦合到光纤中。 光开关中的光纤被设计成最小化将使光纤开关中的输入信号劣化的非线性效应。 特别地,光纤开关被设计为减少门控信号所需的功率量以切换光纤中的输入信号,从而降低光纤熔丝的可能性并通过拉曼效应产生更高阶的孤子。

    BEZEL-FREE DISPLAY DEVICE USING DIRECTIONAL BACKLIGHTING
    56.
    发明申请
    BEZEL-FREE DISPLAY DEVICE USING DIRECTIONAL BACKLIGHTING 有权
    使用方向背光的BEZEL-FREE显示设备

    公开(公告)号:US20130235561A1

    公开(公告)日:2013-09-12

    申请号:US13787194

    申请日:2013-03-06

    IPC分类号: F21V5/00

    摘要: A display device comprising a display panel, a diffusing member positioned between the display panel and an observer, and a directional backlight wherein the directional backlight comprises a half angle divergence equal to or less than 15°. The display cover is preferably configured to shift an image displayed on the display panel relative to an observer to obscure a bezel surrounding the display panel. The use of a directional backlight and a diffusing display cover plate allows for a very small gap between the display panel and the display cover plate.

    摘要翻译: 一种显示装置,包括显示面板,位于显示面板和观察者之间的漫射构件和方向性背光,其中定向背光包括等于或小于15°的半角发散。 优选地,显示盖被配置为相对于观察者移动在显示面板上显示的图像以遮蔽围绕显示面板的边框。 使用定向背光和扩散显示盖板允许显示面板和显示器盖板之间的间隙非常小。

    Optical Trapping For Fiber Illumination
    59.
    发明申请
    Optical Trapping For Fiber Illumination 有权
    用于光纤照明的光学捕获

    公开(公告)号:US20130133744A1

    公开(公告)日:2013-05-30

    申请号:US13669912

    申请日:2012-11-06

    IPC分类号: F21V8/00 H01L31/0232

    摘要: A light collection and light guidance system including: a flat collecting sheet having a first roughened light receiving front surface; and a plurality of optical fibers attached to at least one edge of the flat collecting sheet, wherein the first roughened light receiving front surface of the sheet has a plurality of resonance coupling periodicities, a plurality of correlation lengths, or a combination thereof. Also disclosed is a method of light collection and light guidance using the aforementioned system, or a system including a flat collecting sheet and a solar converter, as defined herein.

    摘要翻译: 一种收光导光系统,包括:具有第一粗糙光接收前表面的平坦收集片; 以及多个光纤,其附接到所述平板集合片的至少一个边缘,其中所述片的所述第一粗糙光接收前表面具有多个谐振耦合周期性,多个相关长度或其组合。 还公开了使用上述系统的光收集和光引导的方法,或者如本文所定义的包括平面收集片和太阳能转换器的系统。

    Intrusion detecting system with polarization dependent sensing elements
    60.
    发明授权
    Intrusion detecting system with polarization dependent sensing elements 有权
    具有偏振相关感知元件的入侵检测系统

    公开(公告)号:US08319957B2

    公开(公告)日:2012-11-27

    申请号:US12432222

    申请日:2009-04-29

    IPC分类号: G01N21/00

    CPC分类号: G08B13/186

    摘要: A detection system includes a length of optical fiber and an OTDR coupled to the optical fiber. The OTDR includes a radiation source providing pulsed radiation to the fiber, a detector detecting radiation that is backscattered through the fiber, and a processor capable of analyzing the variation of the radiation that is backscattered through the fiber. At least two polarization dependent sensing elements are positioned along the length of optical fiber.

    摘要翻译: 检测系统包括一段光纤和耦合到光纤的OTDR。 OTDR包括向光纤提供脉冲辐射的辐射源,检测通过光纤反向散射的辐射的检测器和能够分析通过光纤反向散射的辐射的变化的处理器。 沿着光纤的长度定位至少两个偏振相关的感测元件。