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1. 发明授权

US06836350B2 Device for coupling drive circuitry to electroabsorption modulator 有权
公开(公告)号：US06836350B2
公开(公告)日：2004-12-28
申请号：US10793971
申请日：2004-03-05
申请人： Prashant Singh , Helga Foulk , Scott Redinger , Todd Tanji , Keith Maile , John Stronczer
发明人： Prashant Singh , Helga Foulk , Scott Redinger , Todd Tanji , Keith Maile , John Stronczer
IPC分类号： G02F101
CPC分类号： B82Y20/00 , G02F1/0121 , G02F1/01708 , G02F2001/0157
摘要： Drive circuitry to provide a DC bias voltage and a high frequency modulation current to an electroabsorption modulator (EAM), including a high frequency modulation current source, a coupling capacitor, and a first DC lead. The drive circuitry may include termination circuitry. One lead of the high frequency modulation current source is electrically coupled to the first semiconductor type contact of the EAM and the other lead of the high frequency modulation current source is electrically coupled to an AC ground. The coupling capacitor includes a first electrode electrically coupled to the second semiconductor type contact of the EAM, a second electrode electrically coupled to the AC ground, and a dielectric layer between the electrodes. The first DC lead is electrically coupled to the EAM-side capacitor electrode and configured to be coupled to a first DC potential.

2. 发明授权

US06819468B2 Image projection apparatus and method 失效
标题翻译：图像投影装置及方法
公开(公告)号：US06819468B2
公开(公告)日：2004-11-16
申请号：US10283289
申请日：2002-10-30
申请人： Sang-whoe Dho
发明人： Sang-whoe Dho
IPC分类号： G02F101
CPC分类号： G02B27/1033 , G02B26/0833 , G02B26/105 , G02B27/1086 , H04N5/7416 , H04N9/3111 , H04N9/3152
摘要： An image projection apparatus and method includes a light separating unit that separates white light into monochromatic lights of different wavelengths, and then forms a plurality of monochromatic color stripes. A galvanometer receives the separated monochromatic lights and deflects the lights by a predetermined angle. The holographic optical element such as a hologram element can be used as the light separating unit, obtaining an advantageous reduction in light loss. Further, when the separated RGB monochromatic lights are scanned on the DMD panel by the use of galvanometer, only one color stripe is projected to be incident on the DMD panel in the initial scanning, thereby increasing light utilization efficiency. As a result, the quantity of light increases, the light efficiency improves, and the brightness of the realized image is enhanced.
摘要翻译：一种图像投影装置和方法，包括将白光分离成不同波长的单色光的光分离单元，然后形成多个单色条纹。电流计接收分离的单色光并使光偏转预定的角度。诸如全息元件的全息光学元件可以用作光分离单元，从而获得有利的光损失的降低。此外，当通过使用电流计在DMD面板上扫描分离的RGB单色光时，在初始扫描中仅投影一个彩色条纹入射到DMD面板上，从而提高光的利用效率。结果，光量增加，光效率提高，实现图像的亮度提高。

3. 发明授权

US06798929B2 Piezoelectric tunable filter 有权
公开(公告)号：US06798929B2
公开(公告)日：2004-09-28
申请号：US10234665
申请日：2002-09-03
申请人： Ga-Lane Chen , Charles Leu , Shu Lin Tai
发明人： Ga-Lane Chen , Charles Leu , Shu Lin Tai
IPC分类号： G02F101
CPC分类号： G02B6/29361 , G02B6/29389 , G02F1/0134
摘要： A piezoelectric tunable filter (10) includes a ring (12) made of piezoelectric material surrounding a thin film waveguide (14), and an actuator (17) surrounding the ring. The actuator generates acoustic waves which apply external radial forces on the ring. Because the ring has piezoelectric properties, a periodic, high frequency piezoelectric signal can be generated by the ring and input to the waveguide to produce lattice vibration of the waveguide. The vibration can generate a fluctuating pattern of refractive index in the thin film waveguide due to the modulating effect of the signal. Thus, a periodic radial force of a predetermined frequency produces a desired vibration of the thin films of the waveguide, which in turn produces a desired refractive index in each film, which accordingly changes an optical thickness of each film. Thus, a desired optical wavelength equal to a combined optical thickness of two optically adjacent high refractive index films or two optically adjacent low refractive index films of the waveguide can be selected to pass through the waveguide.

4. 发明授权

US06797938B2 Polarimetric optical device with an insulating layer between detectors 失效
标题翻译：偏振光学器件在检测器之间具有绝缘层
公开(公告)号：US06797938B2
公开(公告)日：2004-09-28
申请号：US10275893
申请日：2002-11-12
申请人： Philippe Bois , Eric Costard , Marcel-Francis Audier , Eric Herniou
发明人： Philippe Bois , Eric Costard , Marcel-Francis Audier , Eric Herniou
IPC分类号： G02F101
CPC分类号： B82Y20/00 , H01L27/1446 , H01L31/02327 , H01L31/035236
摘要： This optical polarimetric detector comprises: a first active detector element having a photoconductor (1) with which a first diffraction grating (3) is associated allowing incident light from a first specific polarization direction to be coupled in the first detector element and allowing the latter to detect the light having this first polarization direction; a second active detector element having a photoconductor (1′) with which a second diffraction grating (3′) is associated allowing incident light from a second polarization direction to be coupled in the second detector element and allowing the latter to detect the light having this second polarization direction. Furthermore, a detector (2) is provided making it possible to eliminate the background noise detected by previous detectors.
摘要翻译：该光学偏振检测器包括：具有光电导体（1）的第一有源检测器元件，第一衍射光栅（3）与第一衍射光栅（3）相关联，允许来自第一特定偏振方向的入射光耦合在第一检测器元件中，检测具有该第一偏振方向的光;具有光电导体（1'）的第二有源检测器元件，第二衍射光栅（3'）与第二衍射光栅（3'）相关联，允许来自第二偏振方向的入射光耦合在第二检测器元件中，允许后者检测具有该第二偏振方向的光。此外，提供检测器（2），使得可以消除由先前检测器检测到的背景噪声。

5. 发明授权

US06775424B2 Modulation and filtration of optical signals 失效
标题翻译：光信号的调制和滤波
公开(公告)号：US06775424B2
公开(公告)日：2004-08-10
申请号：US10007987
申请日：2001-11-12
申请人： Seemant Choudhary , Takeshi Hoshida
发明人： Seemant Choudhary , Takeshi Hoshida
IPC分类号： G02F101
CPC分类号： H04B10/505 , H04B10/25137 , H04B10/5051 , H04B10/5053 , H04B10/5165
摘要： An optical modulator for generating an optical information signal includes a first modulator that modulates an optical carrier with a clock signal. The optical modulator further includes a filter that suppresses a residual carrier component of modulated optical signals. In addition, the optical modulator includes a second modulator for modulating an optical signal with a non-return to zero data signal. When combined, the first and second modulator and the filter operate to transform an optical carrier signal into an optical information signal that is highly tolerant to dispersion and non-linear effects in optical fibers.
摘要翻译：一种用于产生光信息信号的光调制器包括用时钟信号调制光载波的第一调制器。光调制器还包括抑制调制光信号的残留载波分量的滤波器。此外，光调制器包括用于以不归零数据信号调制光信号的第二调制器。当组合时，第一和第二调制器和滤波器操作以将光载波信号转换成对光纤中的色散和非线性效应高度耐受的光信息信号。

6. 发明授权

US06768573B1 Polarization control optical space switch 失效
标题翻译：极化控制光学空间开关
公开(公告)号：US06768573B1
公开(公告)日：2004-07-27
申请号：US09631355
申请日：2000-08-02
申请人： Tetsuya Nishi , Takuji Maeda , Satoshi Kuroyanagi , Tsuyoshi Yamamoto
发明人： Tetsuya Nishi , Takuji Maeda , Satoshi Kuroyanagi , Tsuyoshi Yamamoto
IPC分类号： G02F101
CPC分类号： H04Q11/0005 , G02B27/283 , G02F1/31 , H04Q2011/0024 , H04Q2011/0026 , H04Q2011/0035 , H04Q2011/0043 , H04Q2011/0052 , H04Q2011/0058
摘要： The present invention is directed to an optical space switch accommodating a plurality of input light paths and output light paths. The optical space switch comprises a plurality of polarization control optical switches, each consisting essentially of: polarization control means having elements, one for each input light path, for rotating through 90° the polarizing direction of light information incident from each input light path or otherwise retaining the polarizing direction thereof for output; and a light path routing element for routing the light path for the light information output from the polarization control means in accordance with the polarizing direction of the light information. These polarization control optical switches are arranged in a matrix pattern or coupled in cascade to implement a polarization control optical space switch.
摘要翻译：本发明涉及容纳多个输入光路和输出光路的光学空间开关。光学空间开关包括多个偏振控制光开关，每个偏振控制光开关主要包括：偏振控制装置，具有用于每个输入光路一个的元件，用于使来自每个输入光路入射的光信息的偏振方向旋转90° 保持其偏振方向输出; 以及光路路由元件，用于根据光信息的偏振方向路由从偏振控制装置输出的光信息的光路。这些偏振控制光开关被布置成矩阵图案或级联耦合以实现偏振控制光学空间开关。

7. 发明授权

US06738173B2 Limiting amplifier modulator driver 有权
标题翻译：限幅放大器调制器驱动
公开(公告)号：US06738173B2
公开(公告)日：2004-05-18
申请号：US09892807
申请日：2001-06-26
申请人： Andrew Bonthron , Richard Nottenburg
发明人： Andrew Bonthron , Richard Nottenburg
IPC分类号： G02F101
CPC分类号： H04J3/04 , G02F1/0121 , H03G3/3084 , H04B10/505 , H04B10/564
摘要： Apparatus for driving an optical system modulator to modulate data signals onto a light wave of the optical system. The modulator driver apparatus has a limited amplifier for receiving multiplexed low speed binary data signals and for generating amplified and limited frequency output signals representative of the received multiplexed binary data signals. A differential amplifier connected to an output of the limited amplifier precisely controls the amplitude and generates a low level of over and undershoot of output signals over a wide range of the limited amplifier output signals and has an output connected to central processor unit controlled linear amplifier means for generating gain controlled high fidelity output signals characterized with low over and undershoot and a high extinction ratio for driving the modulator.
摘要翻译：用于驱动光学系统调制器以将数据信号调制到光学系统的光波上的装置。调制器驱动器装置具有用于接收多路复用低速二进制数据信号的有限放大器，并且用于产生表示所接收的多路复用二进制数据信号的放大和受限频率输出信号。连接到有限放大器的输出端的差分放大器精确地控制幅度，并在有限放大器输出信号的宽范围内产生低电平的输出信号的下和下冲，并且具有连接到中央处理器单元控制的线性放大器装置用于产生以低通和下冲为特征的增益控制的高保真输出信号，以及用于驱动调制器的高消光比。

8. 发明授权

US06735012B2 System for phase modulating an incoming optical wavefront 失效
标题翻译：用于相位调制输入光波前的系统
公开(公告)号：US06735012B2
公开(公告)日：2004-05-11
申请号：US10104683
申请日：2002-03-22
申请人： Jeffrey Hunt
发明人： Jeffrey Hunt
IPC分类号： G02F101
CPC分类号： B82Y20/00 , G02B26/06 , G02F1/01 , G02F2202/104 , G02F2202/36 , G02F2203/12 , G02F2203/18
摘要： An active optical system and method for phase-shifting desired portions of an incoming optical wavefront. A control optics assembly receives an incoming optical wavefront and adjusts that incoming optical wavefront in accordance with first desired wavelength and beam propagation parameters. Spatial light modulator (SLM) addressing optics receives the control optics output wavefront and produces a desired beam size therefrom. An SLM receives the output from the SLM addressing optics and provides localized phased shifting of the resulting wavefront. The SLM comprises a microscopic array of pixelated silicon nanocluster elements and a voltage source for applying independently controlled voltages on desired nanocluster elements. SLM egressing optics receives the output of the SLM and returns the beam size of the wavefront to the initial beam size. The output of the SLM egressing element has desired portions of its phase shifted relative to the incoming optical wavefront.
摘要翻译：一种有源光学系统和方法，用于相移移入入射光波阵面的期望部分。控制光学组件接收入射光波阵面并且根据第一期望波长和波束传播参数来调整入射光波阵面。空间光调制器（SLM）寻址光学器件接收控制光学器件输出波阵面并从其产生期望的光束尺寸。 SLM从SLM寻址光学器件接收输出，并提供所得到的波前的本地化相位移位。 SLM包括微阵列的像素化硅纳米团簇元素和用于在所需的纳米团簇元件上施加独立控制的电压的电压源。 SLM出口光学器件接收SLM的输出并将波前的波束尺寸返回到初始波束尺寸。 SLM出口元件的输出具有相对于入射光波阵面相移的期望部分。

9. 发明授权

US06713753B1 Combination of normal and oblique incidence polarimetry for the characterization of gratings 有权
标题翻译：用于表征光栅的正常和倾斜入射偏振方法的组合
公开(公告)号：US06713753B1
公开(公告)日：2004-03-30
申请号：US09898641
申请日：2001-07-03
申请人： Pablo I. Rovira , Guorong Vera Zhuang , John D. Heaton
发明人： Pablo I. Rovira , Guorong Vera Zhuang , John D. Heaton
IPC分类号： G02F101
CPC分类号： G01N21/956 , G01B11/00
摘要： A normal incidence spectroscopic polarimeter is combined with an oblique incidence spectroscopic polarimeter to provide an accurate characterization of complex grating structures, e.g., structures with sloping sidewalls, with notches and with multiple underlying layers. The normal incidence spectroscopic polarimeter includes a polarizing element that is in the path of the normal incidence light beam such that the light beam is transmitted through the polarizing element before reaching the sample and after being reflected off the sample. The two systems may advantageously share a single light source and/or the spectrophotometer.
摘要翻译：正常入射光谱偏振计与倾斜入射光谱旋光计结合，以提供复杂光栅结构的准确表征，例如具有倾斜侧壁的结构，具有凹口和多个下层。正常入射光谱旋光计包括在法线入射光束的路径中的偏振元件，使得光束在到达样品之前并且被反射离开样品之后透射通过偏振元件。两个系统可以有利地共享单个光源和/或分光光度计。

10. 发明授权

US06621613B2 Adaptive pulse compressor 失效
公开(公告)号：US06621613B2
公开(公告)日：2003-09-16
申请号：US10002016
申请日：2001-11-15
申请人： Yaron Silberberg , Doron Meshulach , Dvir Yelin
发明人： Yaron Silberberg , Doron Meshulach , Dvir Yelin
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.

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