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309 条记录 (耗时 0.033 秒)

    Inter-Symbol Interference-Suppressed Colorless DPSK Demodulation
    52.
    发明申请
    Inter-Symbol Interference-Suppressed Colorless DPSK Demodulation 审中-公开
    符号间干扰抑制无色DPSK解调

    公开(公告)号：US20080240736A1

    公开(公告)日：2008-10-02

    申请号：US11692432

    申请日：2007-03-28

    申请人： Philip Nan Ji ,  Lei Xu ,  Ting Wang ,  Shuji Murakami ,  Tsutomu Tajima ,  Yutaka Yano

    发明人： Philip Nan Ji ,  Lei Xu ,  Ting Wang ,  Shuji Murakami ,  Tsutomu Tajima ,  Yutaka Yano

    IPC分类号： H04B10/06

    CPC分类号： H04B10/677

    摘要： An optical device includes an interferometer for a received optical differential phase shift keying DPSK signal, and an equalizer integrated with the interferometer in a manner for reducing from optical filtering effects an interference by signal bits of the DPSK signal with signal bits of a contiguous DPSK signal. The interferometer is a Michelson delay interferometer type, but can also be a Mach-Zehnder delay interferometer type on fiber, waveguide or other optical structure. The equalizer is a Fabry-Perot type equalizer, but can be a ring resonator type or a fiber based equalizer.

    摘要翻译： 光学装置包括用于接收的光学差分相移键控DPSK信号的干涉仪，以及与干涉仪集成的均衡器，以减少光学滤波的方式，利用DPSK信号的信号位与相邻DPSK信号的信号位的干扰 。 干涉仪是迈克尔逊延迟干涉仪型号，但也可以是光纤，波导或其他光学结构上的马赫 - 曾德延迟干涉仪。 均衡器是法布里 - 珀罗型均衡器，但可以是环形谐振器型或基于光纤的均衡器。

    All Order Polarization Mode Dispersion Compensation with Spectral Interference Based Pulse Shaping
    55.
    发明申请
    All Order Polarization Mode Dispersion Compensation with Spectral Interference Based Pulse Shaping 审中-公开
    所有阶极化模式色散补偿与基于光谱干涉的脉冲整形

    公开(公告)号：US20080002972A1

    公开(公告)日：2008-01-03

    申请号：US11762850

    申请日：2007-06-14

    申请人： Arthur Dogariu ,  Philip Ji ,  Ting Wang ,  Yutaka Yano ,  Tsutomu Tajima

    发明人： Arthur Dogariu ,  Philip Ji ,  Ting Wang ,  Yutaka Yano ,  Tsutomu Tajima

    IPC分类号： H04B10/08 ,  H04B17/00

    CPC分类号： H04B10/532

    摘要： A method includes determining spectral interference in real time on an optical signal by an optical path, the spectral interference being indicative of polarization mode dispersion by the optical path, and imposing optical pulses with a phase opposite to the spectral interference on the optical signal. Preferably, the imposing step comprises altering the amplitude or phase of a signal indicative of the spectral interference with an active element. The active element is preferably an acousto-optic modulator.

    摘要翻译： 一种方法包括通过光路在光信号上实时确定光谱干扰，光谱干涉表示通过光路的偏振模色散，并且施加具有与光信号上的光谱干涉相反的相位的光脉冲。 优选地，强制步骤包括改变指示与有源元件的频谱干扰的信号的幅度或相位。 有源元件优选为声光调制器。

    Optical Communication System and Method for Generating Dark Return-to-Zero and DWDM Optical MM-Wave Generation for ROF Downstream Link Using Optical Phase Modulator and Optical Interleaver
    56.
    发明申请
    Optical Communication System and Method for Generating Dark Return-to-Zero and DWDM Optical MM-Wave Generation for ROF Downstream Link Using Optical Phase Modulator and Optical Interleaver 失效
    用于通过光相位调制器和光交错器产生ROF下行链路的深度归零和DWDM光学MM波生成的光通信系统和方法

    公开(公告)号：US20070166054A1

    公开(公告)日：2007-07-19

    申请号：US11621765

    申请日：2007-01-10

    申请人： Jianjun Yu ,  Lei Xu ,  Philip Ji ,  Ting Wang

    发明人： Jianjun Yu ,  Lei Xu ,  Philip Ji ,  Ting Wang

    IPC分类号： H04B10/04

    CPC分类号： H04B10/508 ,  H04B10/2575 ,  H04B10/505 ,  H04J14/02 ,  H04J14/0256

    摘要： A method of generating a dark-RZ pulse in an optical communications system with a dual-arm modulator by setting a direct current bias on the modulator to a specific value such that an output optical power from the modulator achieves a maximum value when the RF signals on the first and second arms of the modulator are off and maintaining the direct current bias at the specific value and applying RF signals to the first and second arms of the modulator and delaying one of the RF signals applied to one of the first and second arms relative to the other of the RF signals such that a dark-RZ pulse is generated with a duty cycle based on the delay. Another aspect of the invention provides a method for generating dense wave division multiplexing (DWDM) optical mm-waves in an optical transmission system by phase modulated DWDM optical signal and applying the phase modulated DWDM optical signal to an input port of an optical interleaver, the optical interleaver having a specified bandwidth to suppress the optical carriers and convert the DWDM optical signal to DWDM optical mm-waves; and amplifying the DWDM optical mm-waves and transmitting the DWDM optical mm-waves over single mode fiber (SMF).

    摘要翻译： 一种在具有双臂调制器的光通信系统中通过将调制器上的直流偏置设置为特定值来产生暗RZ脉冲的方法，使得来自调制器的输出光功率在RF信号 在调制器的第一和第二臂处关闭并将直流偏压保持在特定值并且将RF信号施加到调制器的第一和第二臂并且延迟施加到第一和第二臂之一的RF信号之一 相对于RF信号中的另一个，使得以基于延迟的占空比产生暗RZ脉冲。 本发明的另一方面提供了一种通过相位调制DWDM光信号在光传输系统中产生密集波分复用（DWDM）光学毫米波的方法，并将相位调制的DWDM光信号应用于光交织器的输入端口， 具有指定带宽的光交错器以抑制光载波并将DWDM光信号转换为DWDM光学毫米波; 并放大DWDM光学毫米波，并通过单模光纤（SMF）传输DWDM光学毫米波。

    Table look-up method with adaptive hashing
    57.
    发明申请
    Table look-up method with adaptive hashing 有权

    公开(公告)号：US20060277178A1

    公开(公告)日：2006-12-07

    申请号：US11143054

    申请日：2005-06-02

    申请人： Ting Wang

    发明人： Ting Wang

    IPC分类号： G06F7/00

    CPC分类号： G06F17/30312 ,  G06F17/30306 ,  Y10S707/99932 ,  Y10S707/99937

    摘要： Accessed memory locations of a data table are assigned weights based on usage history, and a hash table chains the highest-weight key values to an abbreviated hash index. The hash table includes keys having at least a predetermined weight so that highly accessed keys are identified by hashing. Additionally, the keys chained to a given hash index are ordered based on their weight in order to optimize the overall data retrieval time. The weights assigned to accessed keys are updated over time so that the content of the hash table is adaptively updated to suit the current table look-up requirements.

    Optical luminescent display device
    60.
    发明授权
    Optical luminescent display device 有权
    光发光显示装置

    公开(公告)号：US06307987B1

    公开(公告)日：2001-10-23

    申请号：US09246145

    申请日：1999-02-08

    申请人： Ting Wang ,  Allan Schweitzer ,  Maximilan Ott

    发明人： Ting Wang ,  Allan Schweitzer ,  Maximilan Ott

    IPC分类号： G02B600

    CPC分类号： G02F2/02 ,  G02F1/0126 ,  G02F1/293 ,  Y10S385/901

    摘要： A luminescent material, such as phosphor, is radiated by energy propagated from the side of an optical fiber, causing the luminescent material to emit visible light. The luminescent material can be of a coincidentally-excited type, requiring the absorption of two wavelengths of radiation to emit visible light. In such a case, two side-emitting optical fibers can be used, with each optical fiber providing one of the needed radiation wavelengths. One embodiment of the invention involves a matrix of optical fibers forming an optical display panel made using coincidentally-excited phosphors. Side-emitting optical fibers are used to simultaneously stimulate a phosphor pixel located between the two fibers, allowing matrix addressing of each pixel individually. The optical display panel is constructed of only optical components. Another embodiment involves an optical switch with coincidentally-excited luminescent material. One radiation is provided by a side-emitting optical fiber. To activate the switch, a second radiation is provided by a laser diode.

    摘要翻译： 诸如磷光体的发光材料通过从光纤侧传播的能量辐射，使发光材料发出可见光。 发光材料可以是巧合激发型，需要吸收两个波长的辐射以发射可见光。 在这种情况下，可以使用两个侧面发射光纤，每个光纤提供所需的辐射波长之一。 本发明的一个实施例涉及一种形成使用巧合激发的磷光体制成的光学显示面板的光纤矩阵。 侧发射光纤用于同时刺激位于两个光纤之间的磷光体像素，从而允许单独地对每个像素进行矩阵寻址。 光学显示面板仅由光学部件构成。 另一实施例涉及具有巧合激发的发光材料的光开关。 一个辐射由侧发射光纤提供。 为了激活开关，由激光二极管提供第二辐射。