Method and system for use in optical code division multiple access
    1.
    发明授权
    Method and system for use in optical code division multiple access 失效
    用于光码分多址的方法和系统

    公开(公告)号:US07339717B2

    公开(公告)日:2008-03-04

    申请号:US10553319

    申请日:2004-04-15

    IPC分类号: G02F1/35 G02F2/02 H04J4/00

    摘要: A method and device are provided for automatically generating a key and a conjugate key to be used in an optical code division multiple access system. The method comprises applying a down conversion process to pump input light to thereby produce down converted broadband signal and idler fields that are complex conjugates of each other. The signal and idler fields thus serve as the key and its conjugate. Also provided according to the invention is a method for use in coding/decoding a signal in an optical code division multiple access system.

    摘要翻译: 提供一种方法和装置,用于自动生成要在光码分多址系统中使用的密钥和共轭密钥。 该方法包括应用下变频处理来泵浦输入光,从而产生下变换的宽带信号和作为彼此的复共轭的空闲场。 因此,信号和空载场作为关键点及其共轭。 根据本发明还提供了一种用于对光码分多址系统中的信号进行编码/解码的方法。

    Crystal for optical conversion
    2.
    发明授权
    Crystal for optical conversion 有权
    水晶光学转换

    公开(公告)号:US08331017B2

    公开(公告)日:2012-12-11

    申请号:US12933436

    申请日:2009-03-25

    IPC分类号: G02F2/02 G02F1/35

    摘要: An efficient broadband crystal for wavelength conversion, the crystal being a quasi-phase matched non-linear crystal, having an aperiodic poled structure, each period being tuned, and wherein said tuning varies adiabatically along a length of said crystal from a first end wherein said tuning is a strong negative mismatch to a second end wherein said tuning is a strong positive mismatch or vice versa. The crystal is able to provide efficient wavelength conversion over a range of frequencies.

    摘要翻译: 一种用于波长转换的有效宽带晶体,所述晶体是准相位匹配非线性晶体,具有非周期极化结构,每个周期被调谐,并且其中所述调谐从所述晶体的长度从第一端绝热变化,其中所述 调谐是与第二端的强负的不匹配,其中所述调谐是强正偏差或反之亦然。 晶体能够在一定范围的频率上提供有效的波长转换。

    Coherently controlled nonlinear Raman spectroscopy and microscopy
    3.
    发明授权
    Coherently controlled nonlinear Raman spectroscopy and microscopy 有权
    相干控制非线性拉曼光谱和显微镜

    公开(公告)号:US07256885B2

    公开(公告)日:2007-08-14

    申请号:US10353063

    申请日:2003-01-29

    IPC分类号: G01J3/44 H01S3/10 H01S3/00

    摘要: A method and system are presented for producing an output coherent anti-stokes Raman scattering (CARS) signal of a medium. The method comprises generation of a unitary optical excitation pulse that carries a pump photon, a Stokes photon and a probe photon; and inducing a CARS process in the medium by exciting the medium by the at least one such unitary optical excitation pulse.

    摘要翻译: 提出了一种用于产生介质的输出相干反斯托克斯拉曼散射(CARS)信号的方法和系统。 该方法包括产生携带泵浦光子,斯托克斯光子和探针光子的单一光学激发脉冲; 以及通过所述至少一个这样的整体光激励脉冲激发介质,在所述介质中引发CARS过程。

    Adaptive pulse compressor
    4.
    发明授权

    公开(公告)号:US06621613B2

    公开(公告)日:2003-09-16

    申请号:US10002016

    申请日:2001-11-15

    IPC分类号: G02F101

    CPC分类号: H01S3/0057 H01S3/10053

    摘要: An adaptive pulse compressor is described, especially for use with ultrashort pulses, wherein the input pulses are modified in an iterative fashion, according to a feedback signal obtained from measurement of the output pulses. The feedback signal is programmed, by means of a programmable spatial light modulator, to allow for independent control of the individual spectral components of the incoming pulses, such that almost arbitrary phase functions can be realized to accomplish efficient compression. One of the main disadvantages associated with prior art pulse compressors, namely, the need for characterization of the uncompressed pulses, is thus eliminated. The compressor is thus capable of handling completely uncharacterized or partially characterized input pulses, or pulses from time varying sources.

    Efficient and robust wireless energy transfer
    5.
    发明授权
    Efficient and robust wireless energy transfer 有权
    高效可靠的无线能量传输

    公开(公告)号:US09368974B2

    公开(公告)日:2016-06-14

    申请号:US13582512

    申请日:2011-03-03

    IPC分类号: H02J5/00

    CPC分类号: H02J50/12 H01F38/14 H02J5/005

    摘要: A method or apparatus for wireless transferring energy between a source coil and a drain coil, comprises selling an initial resonant frequency of the source coil as a first condition; setting the source coil and said drain coil in positions relative to each other to define an initial coupling coefficient therebetween, so that the initial coupling coefficient comprises a second condition; and adiabatically changing one or both of the conditions while pumping energy into the source coil. The source coil energy is transferred to the drain coil over the course of the adiabatic change.

    摘要翻译: 一种用于在源极线圈和漏极线圈之间无线传输能量的方法或装置,包括将源极线圈的初始谐振频率作为第一条件销售; 将源极线圈和所述漏极线圈设置在相对于彼此的位置以限定其间的初始耦合系数,使得初始耦合系数包括第二条件; 并绝热地改变一个或两个条件,同时将能量泵入源线圈。 在绝热变化的过程中,源极线圈能量被传递到漏极线圈。

    Microscope system and method
    6.
    发明授权
    Microscope system and method 有权
    显微镜系统及方法

    公开(公告)号:US07698000B2

    公开(公告)日:2010-04-13

    申请号:US11662765

    申请日:2005-09-14

    IPC分类号: G06F19/00

    CPC分类号: G02B21/06

    摘要: An optical system and method are presented for use in a multi-photon microscope. The system comprises an imaging lens arrangement, and a pulse manipulator arrangement. The pulse manipulator arrangement comprises a temporal pulse manipulator unit which is accommodated in an optical path of an input pulse of an initial profile, and is configured to affect trajectories of light components of the input pulse impinging thereon so as to direct the light components towards an optical axis of the lens arrangement along different optical paths, said temporal light manipulator unit being accommodated in a front focal plane of the imaging lens arrangement, thereby enabling to restore the input pulse profile at an imaging plane.

    摘要翻译: 提出了一种用于多光子显微镜的光学系统和方法。 该系统包括成像透镜装置和脉冲操纵器装置。 脉冲操纵器装置包括时间脉冲操纵器单元,其被容纳在初始轮廓的输入脉冲的光路中,并且被配置为影响入射在其上的输入脉冲的光分量的轨迹,以将光分量朝向 沿着不同光路的透镜装置的光轴,所述时间光操纵器单元被容纳在成像透镜装置的前焦平面中,从而能够恢复成像平面处的输入脉冲轮廓。

    Wavelength selective optical switch
    7.
    发明授权
    Wavelength selective optical switch 有权
    波长选择光开关

    公开(公告)号:US07468840B2

    公开(公告)日:2008-12-23

    申请号:US10492484

    申请日:2002-06-25

    IPC分类号: G02B27/28

    摘要: A wavelength selective switch, in which an input optical signal is wavelength-dispersed and polarization-split in two angularly oriented planes. A polarization rotation device, such as a liquid crystal polarization modulator, pixelated along the wave-length dispersive direction such that each pixel operates on a separate wavelength channel, rotates the polarization of the light signal passing through the pixel, according to the control voltage applied to that pixel. The polarization modulated signals are then wave-length-recombined and polarization-recombined by means of similar dispersion and polarization combining components as were used to respectively disperse and split the input signals. The direction of the output signal is determined by whether the polarization of a particular wavelength channel was rotated by the polarization modulator pixel, or not. In this way, a fast, wavelength dependent, optical switch is provided, capable of use in WDM switching applications.

    摘要翻译: 波长选择开关,其中输入光信号被波长分散并且在两个角度定向的平面中被偏振分割。 根据施加的控制电压,沿着波长色散方向像素化的偏振旋转装置,使得每个像素在单独的波长通道上工作,使通过像素的光信号的偏振旋转 到那个像素 然后通过类似的色散和偏振组合分量对偏振调制信号进行波长重组和偏振复合,如分别分散和分割输入信号。 输出信号的方向由特定波长信道的偏振是否被偏振调制器像素旋转确定。 以这种方式,提供了一种快速,依赖于波长的光开关,能够在WDM开关应用中使用。

    Wavelength selective optical switch
    8.
    发明申请
    Wavelength selective optical switch 有权
    波长选择光开关

    公开(公告)号:US20050036202A1

    公开(公告)日:2005-02-17

    申请号:US10492484

    申请日:2002-06-25

    摘要: A wavelength selective switch, in which an input optical signal is wavelength-dispersed and polarization-split in two angularly oriented planes. A polarization rotation device, such as a liquid crystal polarization modulator, pixelated along the wave-length dispersive direction such that each pixel operates on a separate wavelength channel, rotates the polarization of the light signal passing through the pixel, according to the control voltage applied to that pixel. The polarization modulated signals are then wave-length -recombined and polarization-recombined by means of similar dispersion and polarization combining components as were used to respectively disperse and split the input signals. The direction of the output signal is determined by whether the polarization of a particular wavelength channel was rotated by the polarization modulator pixel, or not. In this way, a fast, wavelength dependent, optical switch is provided, capable of use in WDM switching applications.

    摘要翻译: 波长选择开关,其中输入光信号被波长分散并且在两个角度定向的平面中被偏振分割。 根据施加的控制电压,沿着波长色散方向像素化的偏振旋转装置,使得每个像素在单独的波长通道上工作,使通过像素的光信号的偏振旋转 到那个像素 然后通过类似的色散和偏振组合分量对偏振调制信号进行波长重组和极化复合,分别用于分散和分割输入信号。 输出信号的方向由特定波长信道的偏振是否被偏振调制器像素旋转确定。 以这种方式,提供了一种快速,依赖于波长的光开关,能够在WDM开关应用中使用。

    Adaptive pulse compressor
    9.
    发明授权
    Adaptive pulse compressor 失效
    自适应脉冲压缩机

    公开(公告)号:US06327068B1

    公开(公告)日:2001-12-04

    申请号:US09085293

    申请日:1998-05-27

    IPC分类号: G02B2600

    CPC分类号: H01S3/0057 H01S3/10053

    摘要: An adaptive pulse compressor is described, especially for use with ultrashort pulses, wherein the input pulses are modified in an iterative fashion, according to a feedback signal obtained from measurement of the output pulses. The feedback signal is programmed, by means of a programmable spatial light modulator, to allow for independent control of the individual spectral components of the incoming pulses, such that almost arbitrary phase functions can be realized to accomplish efficient compression. One of the main disadvantages associated with prior art pulse compressors, namely, the need for characterization of the uncompressed pulses, is thus eliminated. The compressor is thus capable of handling completely uncharacterized or from time varying sources.

    摘要翻译: 描述了自适应脉冲压缩器,特别是用于与超短脉冲一起使用的输入脉冲,其中根据从输出脉冲的测量获得的反馈信号,以迭代方式修改输入脉冲。 通过可编程空间光调制器对反馈信号进行编程,以允许对输入脉冲的各个频谱分量的独立控制,使得可以实现几乎任意的相位函数以实现有效的压缩。 因此,消除了与现有技术的脉冲压缩机相关的主要缺点之一,即对未压缩脉冲进行表征的需要。 因此,压缩机能够完全处理不具体的或来自时变的源。