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    Low-speckle Light Sources and Displays Employing Multimode Optical Fiber
    12.
    发明申请
    Low-speckle Light Sources and Displays Employing Multimode Optical Fiber 有权
    采用多模光纤的低散斑光源和显示器

    公开(公告)号：US20140071406A1

    公开(公告)日：2014-03-13

    申请号：US13732053

    申请日：2012-12-31

    Applicant: JGM Associates, Inc.

    Inventor： Jeffrey G. Manni ,  Joseph W. Goodman

    IPC: G02B27/48 ,  G03B21/14

    CPC classification number: G03B21/208 ,  G02B6/0006 ,  G02B27/48 ,  G02F1/133603 ,  G02F2001/136281 ,  G02F2201/05 ,  G02F2203/12 ,  G03B21/14 ,  G03B21/2033

    Abstract: An apparatus comprising a laser and/or LED light source(s), multimode optical fiber(s), light coupler(s), an optional spatial light modulator(s), and an optional projection lens(es). The light source has a 1/e half-width emission bandwidth. The light coupler couples the light source to the multimode optical fiber(s) such that objective speckle contrast is reduced. The multimode optical fiber(s) may pass light from the coupler to an optional spatial light modulator. The spatial light modulator may modulate the light to form an image. The projection lens may transfer light onto an image plane or to illuminate objects. The objective speckle contrast at the end of the multimode fiber in combination with the projection lens diameter (if employed) and wavelength diversity may result in viewed images at the viewer's eye, or other detector, exhibiting speckle contrast that may be 1% or less.

    Abstract translation: 一种包括激光和/或LED光源，多模光纤，光耦合器，可选的空间光调制器和可选的投影透镜的装置。 光源具有1 / e半宽的发射带宽。 光耦合器将光源耦合到多模光纤，使得客观散斑对比度降低。 多模光纤可以将光从耦合器传递到可选的空间光调制器。 空间光调制器可以调制光以形成图像。 投影透镜可以将光转移到图像平面上或照亮对象。 在多模光纤末端与投影透镜直径（如果使用）和波长多样性结合时的目标斑点对比度可能导致在观察者的眼睛或其他检测器处观察到可能为1％或更小的斑点对比度的图像。

    Planar waveguide faraday rotator
    13.
    发明申请
    Planar waveguide faraday rotator 有权
    平面波导法拉第旋转器

    公开(公告)号：US20120093454A1

    公开(公告)日：2012-04-19

    申请号：US12925184

    申请日：2010-10-14

    Applicant: David M. Filgas

    Inventor： David M. Filgas

    IPC: G02F1/095

    CPC classification number: G02B27/286 ,  G02B6/126 ,  G02B6/2746 ,  G02F1/093 ,  G02F1/095 ,  G02F2201/05 ,  G02F2202/40 ,  G02F2203/60

    Abstract: A planar core and a cladding disposed on opposite sides of thereof. In the best mode, the rotator includes a very low Numerical Aperture (NA) planar waveguide. The cladding is birefringent and the refractive index and birefringence thereof are optimized to provide equal mode propagation velocities for both TE and TM modes for at least one transverse mode. The refractive index and birefringence of the cladding are optimized to provide equal mode propagation velocities for both TE and TM modes for a wide range of transverse modes.

    Abstract translation: 平面芯和设置在其相对侧上的包层。 在最佳模式下，旋转器包括非常低的数值孔径（NA）平面波导。 包层是双折射的，并且其折射率和双折射被优化以便为至少一种横向模式的TE和TM模式提供相等的模式传播速度。 优化包层的折射率和双折射率，以便在宽范围的横向模式下为TE模式和TM模式提供相等的模式传播速度。

    Ultra Low Loss Waveguide for Broadband Terahertz Radiation
    14.
    发明申请
    Ultra Low Loss Waveguide for Broadband Terahertz Radiation 有权
    用于宽带太赫兹辐射的超低损耗波导

    公开(公告)号：US20090273532A1

    公开(公告)日：2009-11-05

    申请号：US12434454

    申请日：2009-05-01

    Applicant: Rajind Mendis ,  Daniel M. Mittleman

    Inventor： Rajind Mendis ,  Daniel M. Mittleman

    IPC: H01P3/02 ,  H01Q19/06 ,  H01Q1/50 ,  H01P5/00

    CPC classification number: H01P3/12 ,  G02F2201/05 ,  G02F2203/13 ,  G02F2203/58

    Abstract: An apparatus comprising a parallel plate waveguide (PPWG) comprising two plates separated by a distance that supports a multimode wave, and a transmitter configured to emit a wave having a frequency from about one hundred Gigahertz (GHz) to about ten terahertz (THz) and to couple to one mode of the PPWG. Also disclosed is an apparatus comprising two plates substantially parallel to one another and separated by at least about five millimeters (mm), and an antenna coupled to the two plates and configured to transmit or receive a wave having a frequency from about one hundred GHz to about ten THz. Disclosed is a method comprising polarizing an electromagnetic beam in the first transverse electric (TE1) mode with respect to a PPWG comprising two plates, adjusting the diameter of the electromagnetic beam based on the separation between the plates, and sending the electromagnetic beam into the PPWG.

    Abstract translation: 一种包括平行板波导（PPWG）的装置，包括分开支撑多模波的距离的两个板，以及发射器，被配置为发射具有从大约一千兆赫（GHz）到大约十兆赫（THz）的频率的波，以及 结合PPWG的一种模式。 还公开了一种包括彼此基本上彼此平行并且分开至少约五毫米（mm）的两个板的装置，以及耦合到两个板的天线，并且被配置为将频率从大约一百GHz的波发送到 约十THz。 公开了一种方法，其包括使第一横向电（TE1）模式中的电磁束相对于包括两个板的PPWG偏振，基于板之间的间隔调节电磁束的直径，并将电磁束发送到PPWG 。

    Optical digital-to-analog converter and method of optically converting digital data to analog form
    15.
    发明授权
    Optical digital-to-analog converter and method of optically converting digital data to analog form 有权
    光数字到模拟转换器和将数字数据光学转换为模拟形式的方法

    公开(公告)号：US07403711B2

    公开(公告)日：2008-07-22

    申请号：US11284865

    申请日：2005-11-22

    Applicant: Young-Kai Chen ,  Andreas Leven

    Inventor： Young-Kai Chen ,  Andreas Leven

    IPC: H04J14/00 ,  H04J14/02 ,  G02F1/35 ,  H03M1/00

    CPC classification number: H04B10/66 ,  G02F7/00 ,  G02F2001/212 ,  G02F2001/217 ,  G02F2201/05

    Abstract: An optical digital-to-analog (D/A) converter and a method of optically converting digital data into analog form. In one embodiment, the optical D/A converter includes: (1) a splitter configured to receive and split an input coherent optical carrier into a plurality of mutually coherent optical carriers, (2) a switching stage coupled to the splitter and including a corresponding plurality of selector switches configured to pass or interrupt selected ones of the plurality of coherent optical carriers responsive to pattern bits, (3) an amplitude and phase offset stage coupled to the switching stage and including a corresponding plurality of amplitude and phase offset units configured to offset amplitudes or phases of passed ones of the plurality of mutually coherent optical carriers responsive to offset signals and (4) a combiner coupled to the amplitude and phase offset stage and configured to recombine the mutually coherent optical carriers to yield an optical output signal.

    Abstract translation: 光数字模拟（D / A）转换器和将数字数据光学转换为模拟形式的方法。 在一个实施例中，光学D / A转换器包括：（1）分配器，被配置为将输入相干光载波接收并分离成多个相互相干的光载波，（2）耦合到分离器的切换级并且包括相应的 多个选择器开关，其被配置为响应于图案位传递或中断所述多个相干光载波中的选定的一个;（3）耦合到所述切换级的幅度和相位偏移级，并且包括对应的多个幅度和相位偏移单元， 响应于偏移信号，多个相互相干光载波中经过的相位偏移幅度或相位的偏移幅度或相位;（4）耦合到幅度和相位偏移级的组合器，并被配置为重组相互相干的光载波以产生光输出信号。

    Systems and methods for all-optical signal regeneration based on free space optics
    16.
    发明申请
    Systems and methods for all-optical signal regeneration based on free space optics 审中-公开
    基于自由空间光学的全光信号再生的系统和方法

    公开(公告)号：US20080100846A1

    公开(公告)日：2008-05-01

    申请号：US11589276

    申请日：2006-10-26

    Applicant: Sagie Tsadka ,  Niv Narkiss ,  Haim Chayet ,  Shalva Ben-Ezra ,  Er'el Granot ,  Reuven Zaibel ,  Arieh Sher ,  Shai Tzadok ,  Nir Shachar

    Inventor： Sagie Tsadka ,  Niv Narkiss ,  Haim Chayet ,  Shalva Ben-Ezra ,  Er'el Granot ,  Reuven Zaibel ,  Arieh Sher ,  Shai Tzadok ,  Nir Shachar

    IPC: G01B9/02

    CPC classification number: G02F1/3519 ,  G02F2201/05 ,  H04B10/299

    Abstract: System and methods for all-optical signal regeneration based on free space optics are described. In one exemplary embodiment, a method for regenerating an optical signal comprises counter-propagating an input signal and a regenerating signal within an all-optical signal regenerator based on free space optics, where the all-optical signal regenerator based on free space optics comprises a Sagnac loop interferometer, and extracting a regenerated output signal from the Sagnac loop interferometer. In another exemplary embodiment, an all-optical signal regenerator based on free space optics comprises a Sagnac loop interferometer, an optical signal input path coupled to a semiconductor optical amplifier of the Sagnac loop interferometer, a regenerating optical signal path coupled to the semiconductor optical amplifier of the Sagnac loop interferometer, and a regenerated optical output path coupled to the Sagnac loop interferometer.

    Abstract translation: 描述了基于自由空间光学的全光信号再生的系统和方法。 在一个示例性实施例中，用于再生光信号的方法包括基于自由空间光学器件在全光信号再生器内对输入信号和再生信号进行反向传播，其中基于自由空间光学的全光信号再生器包括 Sagnac环路干涉仪，并从Sagnac环路干涉仪提取再生的输出信号。 在另一示例性实施例中，基于自由空间光学的全光信号再生器包括Sagnac环路干涉仪，耦合到Sagnac环形干涉仪的半导体光放大器的光信号输入路径，耦合到半导体光放大器的再生光信号路径 的Sagnac环形干涉仪，以及耦合到Sagnac环形干涉仪的再生光学输出路径。

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