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18 条记录 (耗时 0.033 秒)

    Waveplate analyzer based on multiple tunable optical polarization rotators
    3.
    发明授权
    Waveplate analyzer based on multiple tunable optical polarization rotators 有权
    基于多个可调光偏振旋转器的波片分析仪

    公开(公告)号：US07952711B1

    公开(公告)日：2011-05-31

    申请号：US12056262

    申请日：2008-03-26

    申请人： Xiaojun Chen ,  Lianshan Yan ,  Xiaotian Steve Yao

    发明人： Xiaojun Chen ,  Lianshan Yan ,  Xiaotian Steve Yao

    IPC分类号： G01J4/00

    CPC分类号： G01N21/23

    摘要： Systems, apparatus and methods for characterizing linear retarders using a waveplate analyzer constructed by polarization rotators. In one implementation of such an analyzer, both the retardation of the waveplate sample and the orientation of optical axis of the waveplate sample can be simultaneously measured.

    摘要翻译： 使用由偏振旋转器构成的波片分析仪来表征线性延迟器的系统，装置和方法。 在这种分析仪的一个实现中，可以同时测量波片样品的延迟和波片样品的光轴的取向。

    Optical differential group delay module with folded optical path
    4.
    发明授权
    Optical differential group delay module with folded optical path 有权
    具有折叠光路的光学差分组延迟模块

    公开(公告)号：US07723670B1

    公开(公告)日：2010-05-25

    申请号：US12055685

    申请日：2008-03-26

    申请人： Lianshan Yan ,  Xiaojun Chen ,  Xiaotian Steve Yao

    发明人： Lianshan Yan ,  Xiaojun Chen ,  Xiaotian Steve Yao

    IPC分类号： G02F1/01

    CPC分类号： G02B6/2713 ,  G02F1/0136 ,  H04B10/07951

    摘要： Differential group delay (DGD) devices and techniques based on folded optical paths. An in-line polarization monitor can be provided as a feedback for worst-case alignment without using an in-line polarizer. Polarization maintaining retro reflectors can minimize the introduced higher-order polarization effects caused by reflections between folding mirrors or prisms in conventional schemes.

    摘要翻译： 基于折叠光路的差分组延迟（DGD）器件和技术。 可以提供在线偏振监视器作为用于最坏情况对准的反馈而不使用在线偏振器。 偏振维持复古反射器可以将传统方案中折叠镜或棱镜之间的反射引起的高阶极化效应最小化。

    Optical polarization division multiplexing in optical communication
    5.
    发明授权
    Optical polarization division multiplexing in optical communication 有权
    光通信中的光偏振复用

    公开(公告)号：US08073326B2

    公开(公告)日：2011-12-06

    申请号：US11949723

    申请日：2007-12-03

    申请人： Lianshan Yan ,  Xiaotian Steve Yao

    发明人： Lianshan Yan ,  Xiaotian Steve Yao

    IPC分类号： H04B10/00

    CPC分类号： H04J14/06

    摘要： Devices, systems and techniques for optical communication are provided based on polarization division multiplexing (PDM) to use an optical monitor channel at a distinct optical monitor wavelength to monitor optical polarization fluctuation and polarization mode dispersion during the transmission from the transmitter to the receiver to facilitate the effective demultiplexing of the two orthogonal signal channels at the receiver through automatic feedback control on a dynamic polarization controller and a polarization beam splitter.

    摘要翻译： 基于极化分割复用（PDM）提供用于光通信的设备，系统和技术，以在不同的光学监视器波长处使用光学监视器通道来监视从发射机到接收机的传输期间的光偏振波动和偏振模色散 通过在动态偏振控制器和偏振分束器上的自动反馈控制在接收器处对两个正交信号通道进行有效的解复用。

    Optical Polarization Division Multiplexing In Optical Communication
    6.
    发明申请
    Optical Polarization Division Multiplexing In Optical Communication 有权
    光通信中的光偏振分复用

    公开(公告)号：US20080138070A1

    公开(公告)日：2008-06-12

    申请号：US11949723

    申请日：2007-12-03

    申请人： Lianshan Yan ,  Xiaotian Steve Yao

    发明人： Lianshan Yan ,  Xiaotian Steve Yao

    IPC分类号： H04J14/06

    CPC分类号： H04J14/06

    摘要： Apparatus, systems and techniques for optical communication based on polarization division multiplexing (PDM) using an optical monitor channel to facilitate the effective demultiplexing of the two orthogonal signal channels through automatic feedback control on a dynamic polarization controller and a polarization beam splitter.

    摘要翻译： 基于使用光学监视器通道的偏振分割复用（PDM）的光通信的装置，系统和技术，以便通过在动态偏振控制器和偏振分束器上的自动反馈控制来促进两个正交信号通道的有效解复用。

    Autocorrelation Technique Based on Measurement of Polarization Effects of Optical Pulses
    10.
    发明申请
    Autocorrelation Technique Based on Measurement of Polarization Effects of Optical Pulses 审中-公开
    基于光脉冲极化效应测量的自相关技术

    公开(公告)号：US20060244951A1

    公开(公告)日：2006-11-02

    申请号：US11308049

    申请日：2006-03-03

    申请人： Ting Luo ,  Changyuan Yu ,  Zhongqi Pan ,  Lianshan Yan ,  Saurabh Kumar ,  Alan Willner

    发明人： Ting Luo ,  Changyuan Yu ,  Zhongqi Pan ,  Lianshan Yan ,  Saurabh Kumar ,  Alan Willner

    IPC分类号： G01J1/00

    CPC分类号： G01J11/00

    摘要： Autocorrelation technique for measurement of width of optical short pulses based on polarization effects. The optical pulse is split into two orthogonal polarization states and these two replicas have a relative delay which depolarizes the pulse. By tuning the relative delay of the two replicas and measuring the degree-of-polarization (DOP) of the pulse or the induced polarimetric four-wave mixing (FWM) through nonlinear media, the pulse's temporal width can be accurately derived. The technique can be all-fiber-based, wavelength independent, cost effective, applicable to low optical power, and does not require significant optical alignment.

    摘要翻译： 基于极化效应测量光学短脉冲宽度的自相关技术。 光脉冲分为两个正交极化状态，这两个复制品具有使脉冲去极化的相对延迟。 通过调整两个副本的相对延迟并通过非线性介质测量脉冲或感应极化四波混频（FWM）的极化度（DOP），可以准确地推导出脉冲的时间宽度。 该技术可以是全光纤，波长独立，成本有效，适用于低光功率，并且不需要显着的光学对准。