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公开(公告)号：US07426070B2
公开(公告)日：2008-09-16
申请号：US11438798
申请日：2006-05-22
IPC分类号： G02F1/03
CPC分类号： G02B26/00 , G02B27/281
摘要： An intensity-dependent light modulating device and method involves light successively passing through a polarizer, a first phase retardation plate and a first light modulator. The light then strikes a mirror and then passes once again through the light modulator and the phase retardation plate in the opposite direction, and then strikes an analyzer that is crossed relative to the polarizer. The light modulator and the phase retardation plate are respectively located in an electric field in which the indicatrices of the light modulator and the phase retardation plate are deflected, wherein the deflection of the indicatrix of the light modulator is intensity-dependent. Due to the passage of light through the phase retardation plate and the light modulator, an intensity-dependent rotation of the direction of polarization occurs in such a way that higher intensity light is filtered in the analyzer while lower intensity light is transmitted.
摘要翻译： 强度依赖性光调制装置和方法涉及光依次通过偏振器，第一相位延迟板和第一光调制器。 然后光照射反射镜，然后再次通过光调制器和相位延迟板在相反方向上，然后撞击相对于偏振器交叉的分析器。 光调制器和相位延迟板分别位于光调制器和相位延迟板的指示偏转的电场中，其中光调制器的指示符的偏转是强度依赖性的。 由于通过相位延迟板和光调制器的光通过，偏振方向的强度相关旋转以这样的方式发生，使得较高强度的光在分析仪中被滤波，同时传输较低强度的光。
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2.发明授权公开(公告)号：US07769300B1
公开(公告)日：2010-08-03
申请号：US09890597
申请日：2000-01-17
申请人： Wolfgang Dultz , Leonid Beresnev , Erna Frins , Franko Kueppers , Heidrun Schmitzer , Joachim Vobian , Werner Weiershausen
发明人： Wolfgang Dultz , Leonid Beresnev , Erna Frins , Franko Kueppers , Heidrun Schmitzer , Joachim Vobian , Werner Weiershausen
IPC分类号： H04B10/00
CPC分类号： H04B10/2572
摘要： A method and device for reducing the distortion of optical pulses caused by the polarization mode dispersion in optical communication systems is provided. When an optical pulse having any polarization is transmitted through an optical communication system, which is optically anisotropic, at least in sections, the optical pulse may become distorted due to the different velocities of the various polarization components. This distortion of the optical pulses may reduces the maximum transmission rate of the system. A method is provided for functioning in response to the detected transmission quality of the communication system where a polarization-controlling device for setting the polarization of the optical pulse is driven in such a way that the transmission quality is maximized. An optical communication system, including an optical transmission medium, involves a device for determining the transmission quality of the communication system, a regulating device, and a polarization-controlling device. The output signal from the device for determining the transmission quality of the communication system may be applied to the regulating device, which drives the polarization-controlling device to change the polarization of the optical pulses in such a way that the transmission quality is optimized.
摘要翻译： 提供了一种用于减少由光通信系统中的偏振模色散引起的光脉冲失真的方法和装置。 当具有任何极化的光脉冲至少部分通过光学各向异性的光通信系统传输时，由于各种偏振分量的不同速度，光脉冲可能会变形。 光脉冲的这种失真可能会降低系统的最大传输速率。 提供了一种响应于检测到的通信系统的传输质量起作用的方法，其中用于设置光脉冲的极化的偏振控制装置以传输质量最大化的方式被驱动。 包括光传输介质的光通信系统涉及用于确定通信系统的传输质量的装置，调节装置和偏振控制装置。 来自用于确定通信系统的传输质量的设备的输出信号可以被施加到调节装置，该调节装置驱动偏振控制装置以改变传输质量被优化的方式改变光脉冲的偏振。
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3.发明授权Device for generating adding and subtracting digital sequences of optical pulses and method for secure transmission of information 有权用于产生加法和减去光脉冲的数字序列的装置和用于信息的安全传输的方法公开(公告)号：US07468827B2
公开(公告)日：2008-12-23
申请号：US10220088
申请日：2001-01-24
IPC分类号： G02B1/00
CPC分类号： G02F3/00 , G02F1/21 , G02F2001/212
摘要： A device for generating, adding and subtracting digital sequences of optical pulses and a method for the secure transmission of information. An interferometer having at least one electro-optical switch or electro-optical modulator positioned in one of its branch sections is used so that binary optical pulse sequences may be added and/or subtracted in the context of an electro-optical device and a method for the secure transmission of information using optical signals.
摘要翻译： 一种用于产生，增加和减去光脉冲的数字序列的装置和用于信息的安全传输的方法。 使用具有位于其一个分支部分中的至少一个电光开关或电光调制器的干涉仪，使得可以在电光装置的上下文中添加和/或减去二进制光脉冲序列，以及用于 使用光信号安全传输信息。
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4.发明授权公开(公告)号：US06282333B1
公开(公告)日：2001-08-28
申请号：US09285118
申请日：1999-04-01
IPC分类号： G02B6126
CPC分类号： H04B10/2569
摘要： A method and a device are described to compensate for polarization mode dispersion in an optical transmission link(9, 9′) having polarization-dependent transmission characteristics, in particular in optical fibers and cables with not only statistical, but preferred birefringence. A compensation element (1, 1′, 1″), whose length is adjusted non-destructively using an interference device (2, 2′, 2″), in particular a pressure mechanism, is connected upstream or downstream from the transmission link (9, 9′). The polarization states PL and PS of the compensation element are mixed by the interference and thus the length of the compensation fiber is defined at which a propagation time difference between the partial waves of polarization states PL and PS is increased or decreased so that it compensates for the propagation time difference &tgr; within the transmission link (9, 9′).
摘要翻译： 描述了一种方法和装置，以补偿具有偏振相关传输特性的光传输链路（9,9'）中的偏振模色散，特别是在光纤和电缆中，不仅具有统计的但优选的双折射。 使用干涉装置（2,2'，2“）非特定地调整长度的补偿元件（1,1'，1”），特别是压力机构，被连接到变速器的上游或下游 链接（9,9'）。 补偿元件的偏振态PL和PS通过干涉进行混合，因此补偿光纤的长度被定义为偏振状态PL和PS的部分波之间的传播时间差增加或减小，从而它补偿 传播时间差 在传输链路（9,9'）内。
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公开(公告)号：US06649087B1
公开(公告)日：2003-11-18
申请号：US09914250
申请日：2001-08-24
IPC分类号： C09K1952
CPC分类号： C09K19/02 , G02F1/141 , Y10T428/10
摘要： A liquid crystalline material having a lamellar structure can be used for phase modulation. A liquid crystal having arcuated or angular dimer molecules so that the molecules each include two central units, and the longitudinal axes of the two central units exhibit at least approximately oppositely directed inclination angles with respect to the layer normal z. By configuring the two central units of the dimer molecule in accordance with the present invention, the molecular index ellipsoid, which is essentially composed of the components of the two readily polarizable central units, may be positioned such that the optical axis is always situated in parallel to the layer normal z, making it possible to prevent the light, which propagates in a defined direction orthogonally to the layer normal through the liquid crystalline material, from undergoing a polarization modulation simultaneously with the phase modulation.
摘要翻译： 具有层状结构的液晶材料可用于相位调制。 具有弧形或角二聚体分子的液晶，使得分子各自包括两个中心单元，并且两个中心单元的纵向轴线相对于层法线z呈现至少大致相反的倾斜角度。 通过配置根据本发明的二聚体分子的两个中心单元，基本上由两个易于极化的中心单元的组分组成的分子索引椭圆体可以被定位成使得光轴总是位于平行的位置 到正常的层z，使得可以防止在与正交通过液晶材料的层垂直的限定方向上传播的光在相位调制的同时进行偏振调制。
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6.发明授权公开(公告)号：US06563980B1
公开(公告)日：2003-05-13
申请号：US09529535
申请日：2000-04-14
申请人： Wolfgang Dultz , Leonid Beresnev , Reinald Ries
发明人： Wolfgang Dultz , Leonid Beresnev , Reinald Ries
IPC分类号： G02B626
CPC分类号： G02B6/29391 , G02B6/29308 , G02B6/2931 , G02B6/29317 , G02B6/29323 , G02B6/29395 , G02F1/13338 , H04J14/0221
摘要： WDM multi-channel systems for large distances having a number of intensifiers may cause an increase in intensifications, which lead to considerable differences in intensity, even given modest wavelength dependence, making spectral leveling maybe necessary. The light from the fiber is first spectrally into channels, and, thus locally separated, projected onto the surface of an optic limiter based on an OASLM (optical addressed, spatial light modulator), in which the intensive channels are overproportionally attenuated. The tension dependence of liquid crystal cells, derived from exposure, is used to level the WDM channels. Lastly, the channels are again imaged onto a point and coupled into another fiber. The invention is used in WDM multi-channel systems for large distances a number of intensifiers.
摘要翻译： 具有多个增强器的具有大距离的WDM多通道系统可能导致强度的增加，这导致强度的显着差异，即使给定适度的波长依赖性，也可能需要光谱调平。 基于OASLM（光学寻址的空间光调制器），来自光纤的光首先光谱地进入通道，并因此局部分离，投射到光学限制器的表面上，其中密集的通道被过度比例地衰减。 来自曝光的液晶单元的张力依赖性用于对WDM通道进行平坦化。 最后，通道再次成像到一个点上并耦合到另一个光纤中。 本发明用于WDM多通道系统中的大距离多个增压器。
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公开(公告)号：US06181407B2
公开(公告)日：2001-01-30
申请号：US08880812
申请日：1997-06-23
申请人： Wolfgang Dultz , Leonid Beresnev , Ashok Bizadar , Wolfgang Haase
发明人： Wolfgang Dultz , Leonid Beresnev , Ashok Bizadar , Wolfgang Haase
IPC分类号： G02F113
CPC分类号： G02F1/139 , C09K19/02 , G02F1/141 , Y10T428/1005
摘要： An electro-optic material that is characterized by short reaction times when working with a low drive voltage. For that, the electro-optic material has a lamellar liquid crystal (10), which contains one or more components and into which chiral molecules (20), whose longitudinal axes (m) are longer than the longitudinal axes of the molecules (10) forming the lamellar liquid crystal, are introduced at a predefined concentration, so that the longitudinal axes (m) of the chiral molecules (20) are tilted, without an external electric field, statistically by a predefined angle (&thgr;m) toward the normal (z) of the layer of the lamellar liquid crystal (10).
摘要翻译： 一种电光材料，其特征在于在低驱动电压下工作时反应时间短。 为此，电光材料具有层状液晶（10），其包含一种或多种组分，并且其纵轴（m）长于分子（10）的纵向轴线的手性分子（20） 以预定的浓度引入层状液晶，使得手性分子（20）的纵向轴线（m）在没有外部电场的情况下以统计方式倾斜到朝向法线（z）的预定角度（t） ）的层状液晶层（10）。
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8.发明授权公开(公告)号：US07649610B1
公开(公告)日：2010-01-19
申请号：US09958686
申请日：2000-03-30
CPC分类号： G02B27/48
摘要： A method and a device for reducing speckle formation on a projection display when working with a coherent light source. In this context, the light coming from the light source, before the projection, may strike an electrically controllable optical element having a spatially inhomogeneous refractive index, passing through the same, the refractive index being varied over time within the projection period. This may lead to an averaging out of the speckle pattern on the projection screen. For purposes of illumination, a multimode light source may be used, and/or the light coming from the light source is separated into a plurality of spatial modes, thereby reinforcing the effect. As an optical element, one may employ a liquid crystal element composed of at least two liquid crystal layers, to which a spatially dependent voltage is applied to generate a spatially dependent refractive index. Its birefringence may be compensated by orientating the layers to one another in appropriate fashion.
摘要翻译： 一种用于在使用相干光源时减少投影显示器上的斑点形成的方法和装置。 在这种情况下，来自光源的光在投影之前可以击中具有空间不均匀折射率的电可控光学元件，穿过该光学元件，折射率随着时间推移在投影周期内变化。 这可能会导致投影屏幕上的斑点图案平均化。 为了照明的目的，可以使用多模光源，和/或来自光源的光被分离成多个空间模式，从而增强效果。 作为光学元件，可以使用由至少两个液晶层构成的液晶元件，施加空间相关电压以产生空间依赖的折射率。 可以通过以适当的方式将层相互定向来补偿其双折射。
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公开(公告)号：US06914647B1
公开(公告)日：2005-07-05
申请号：US09856108
申请日：1999-10-29
IPC分类号： G02F1/1347 , G02F1/141
CPC分类号： G02F1/141 , G02F1/13471 , G02F2001/1414 , G02F2203/18
摘要： An electrically drivable light modulator having liquid crystal layers, which are disposed one behind the other and are enclosed between transparent plates having a surface anisotropy that orients the molecules of the liquid crystals and having electrodes for generating an electric field in the liquid crystals, at least two layers of helical, smectic, ferroelectric liquid crystals are situated one behind the other in the path of rays of a light beam to be modulated. The directions of the fast and slow axes of the individual layers are rotated relatively to each other so that the polarization of the light beam is the same upstream and downstream from the modulator. An adaptive, optical device has a field of light modulators configured in a raster-type array, in which the modulators are situated in the path of rays of the device, each individual light modulator being able to be driven to compensate for unsharpness occurring on a point-by-point basis in an image to be processed.
摘要翻译： 一种具有液晶层的电驱动光调制器，其一个接一个地设置并且被封闭在具有表面各向异性的透明板之间，所述透明板定向液晶分子并且具有用于在液晶中产生电场的电极，至少 在要调制的光束的光线的路径中，两层螺旋，近晶，铁电液晶一个接一个地位于另一层。 各层的快轴和慢轴的方向相对旋转，使得光束的偏振与调制器的上游和下游相同。 自适应光学装置具有配置在光栅型阵列中的光调制器的场，其中调制器位于装置的射线路径中，每个单独的光调制器能够被驱动以补偿在 要处理的图像中逐点依据。
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10.发明授权公开(公告)号：US06338882B1
公开(公告)日：2002-01-15
申请号：US09533478
申请日：2000-03-23
IPC分类号： H01T1400
CPC分类号： C23C16/30 , G02F1/1354 , G02F2202/10 , G02F2202/104
摘要： A method for applying a light-blocking layer between a photoconducting layer and a mirror when making an optically addressable spatial light modulator (OASLM) using a chemical vapor deposition process. The light-blocking layer and the photoconducting layer are applied in a shared process step in which both the thickness and composition of the photoconducting layer to be applied to the transparent electrode, as well as the thickness and composition of the light-blocking layer to be applied to the photoconducting layer are determined by a time-related change of the variation of the gas composition during the deposition process. The structure of the OASLM can be optimally adapted to a desired purpose.
摘要翻译： 一种在使用化学气相沉积工艺制造可光寻址空间光调制器（OASLM）时在光导层和反射镜之间施加阻光层的方法。 将遮光层和光导层施加在共同的工艺步骤中，其中施加到透明电极的光导层的厚度和组成以及遮光层的厚度和组成均为 施加到光导层的沉积过程中由气体组成变化的时间变化确定。 OASLM的结构可以最佳地适应于所需的目的。
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