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1. 发明授权

US07355671B2 Fabrication method for liquid crystal cell 有权
标题翻译：液晶单元制造方法
公开(公告)号：US07355671B2
公开(公告)日：2008-04-08
申请号：US10371976
申请日：2003-02-21
申请人： Grady K. Anderson , Shanti A. Cavanaugh , James M. Hood , Louis J. Molinari , Mark E. Young , Edward Palen
发明人： Grady K. Anderson , Shanti A. Cavanaugh , James M. Hood , Louis J. Molinari , Mark E. Young , Edward Palen
IPC分类号： G02F1/19
CPC分类号： G02F1/1339 , G02F1/133351 , G02F2001/133354
摘要： A liquid crystal cell fabrication method is presented that utilizes a deposited metal gasket moisture barrier bonding two opposing plates of glass each having a spacer layer to accurately control cell gap thickness along with an optional integrated thermal sensor and heater deposition layer sandwiched between both opposing plates of glass.
摘要翻译：提出了一种液晶单元的制造方法，该方法利用沉积的金属衬垫水分阻挡层，将两个相对的玻璃板相结合，每个玻璃板均具有间隔层以精确地控制单元间隙厚度以及夹在两个相对的板之间的可选的集成热传感器和加热器沉积层玻璃。

2. 发明申请

US20070183019A1 Optical devices with cascaded liquid crystal elements 有权
标题翻译：具有级联液晶元件的光学器件
公开(公告)号：US20070183019A1
公开(公告)日：2007-08-09
申请号：US10556307
申请日：2004-05-09
申请人： SeongWoo Suh , Yossi Corem
发明人： SeongWoo Suh , Yossi Corem
IPC分类号： G02F1/01
CPC分类号： G02F1/13471 , G02F1/01 , G02F1/1347 , G02F2201/16 , G02F2202/40 , G02F2203/04 , G02F2203/50
摘要： An optical beam processing device with two serially disposed birefringent elements, each element having its own direction of orientation. At least one element is pixelated with electrodes activated by control signals. The directions of orientation of the elements are aligned such that the phase shift imparted to the beam by an unactivated pixel of one element, cancels the phase shift imparted to the beam by the other element, such that the beam traversing that pixel undergoes zero phase shift. An appropriate control signal adds a phase shift to the beam passing through that pixel, so as to generate an overall phase shift through the device for any desired wavelength, which could not be readily achieved by either of the elements alone. The resulting device is thus able to provide switchable phase shifts of exactly zero and pi, for different wavelengths, generally unattainable by a single element device.
摘要翻译：一种具有两个串联布置的双折射元件的光束处理装置，每个元件具有其自己的取向方向。至少有一个元件被控制信号激活的电极像素化。元件的取向方向对准，使得由一个元件的未激活像素赋予光束的相移抵消由另一元件施加到光束的相移，使得穿过该像素的光束经历零相移。合适的控制信号将相移移到通过该像素的光束上，以便产生通过该装置的任何所需波长的整体相移，这不能单独地通过任何一个元件来实现。因此，所得到的器件能够为通常不能由单个元件器件实现的不同波长提供恰好为零和pi的可切换相移。

3. 发明授权

US06943768B2 Thermal control system for liquid crystal cell 有权
标题翻译：液晶单元热控系统
公开(公告)号：US06943768B2
公开(公告)日：2005-09-13
申请号：US10371983
申请日：2003-02-21
申请人： Shanti A. Cavanaugh , Mark A. Crowley , Neil J. Spatz
发明人： Shanti A. Cavanaugh , Mark A. Crowley , Neil J. Spatz
IPC分类号： G02F1/133 , G09G3/00 , G09G3/36
CPC分类号： G02F1/133382 , G09G3/006 , G09G2320/041
摘要： A thermal control system for a liquid crystal cell is presented that may utilize a time division scheme to multiplex temperature sensing and heating functions across active thermal elements such that the cell may generally be kept at a constant temperature. A calibration process characterizes the profile of the cell and generates a polynomial regression formula that provides the voltage drive output for a temperature and cell state input. The control system stores the state of the liquid crystal cell, the regression formula, and reads the temperature of the liquid crystal cell to compute end assert the temperature compensated voltage drive.
摘要翻译：提出了一种用于液晶单元的热控制系统，其可以利用时分方案来跨越有源热元件来复用温度感测和加热功能，使得电池通常可以保持在恒定温度。校准过程表征单元格的轮廓，并生成多项式回归公式，为温度和单元状态输入提供电压驱动输出。控制系统存储液晶单元的状态，回归公式，并读取液晶单元的温度，以计算结束断言温度补偿电压驱动。

4. 发明申请

US20080316585A1 Optical Wavelength Selective Router 有权
标题翻译：光波长选择性路由器
公开(公告)号：US20080316585A1
公开(公告)日：2008-12-25
申请号：US12066249
申请日：2006-09-10
申请人： Gil Cohen , SeongWoo Suh , Yossi Corem
发明人： Gil Cohen , SeongWoo Suh , Yossi Corem
IPC分类号： G02F1/29
CPC分类号： G02B6/29383 , G02B6/2713 , G02B6/29311 , G02B6/29313 , G02B6/3512 , G02B6/3548 , G02B6/356 , G02B6/3594 , H04J14/0212 , H04J14/0219 , H04Q11/0005 , H04Q2011/003 , H04Q2011/0035
摘要： A fiber-optical, wavelength selective switch, especially for channel routing with equalization and blocking applications. The input signals are converted to light beams having predefined polarizations (41). The beams are then laterally expanded (43), and then undergo spatial dispersion in the beam expansion plane. The different wavelength components are directed through a polarization rotation device, pixilated along the wavelength dispersion direction such that each pixel operates on a separate wavelength. Each beam is passed into a pixilated beam steering array (48), for directing each wavelength to a desired output port. The beam steering devices can be MEMS-based or Liquid crystal-based, or an LCOS array. When the appropriate voltage is applied to a pixel and its associated beam steering element, the polarization of the light passing through the pixel is rotated and the beam steered to couple to the selected output port.
摘要翻译：一种光纤，波长选择开关，特别适用于具有均衡和阻塞应用的信道路由。输入信号被转换成具有预定极化的光束（41）。然后将梁横向膨胀（43），然后在梁膨胀平面中进行空间色散。不同的波长分量被引导通过偏振旋转装置，沿着波长色散方向被像素化，使得每个像素在单独的波长上操作。每个光束被传送到像素化的光束操纵阵列（48）中，用于将每个波长指向所需的输出端口。光束转向装置可以是基于MEMS的或基于液晶的或LCOS阵列。当适当的电压施加到像素及其相关联的光束操纵元件时，通过像素的光的偏振被旋转，并且光束被转向以耦合到所选择的输出端口。

5. 发明授权

US07454100B2 Single-pole optical wavelength selector 有权
标题翻译：单极光波长选择器
公开(公告)号：US07454100B2
公开(公告)日：2008-11-18
申请号：US11914946
申请日：2006-05-18
申请人： Yossi Corem , SeongWoo Suh , Boris Frenkel , Haggai Arbell
发明人： Yossi Corem , SeongWoo Suh , Boris Frenkel , Haggai Arbell
IPC分类号： G02B6/42
CPC分类号： G02F1/31 , G02B6/272 , G02B6/29311
摘要： A fiber-optical, wavelength selective switch, especially for channel blocking applications. The input signal is converted to light beams having predefined polarizations relative to the plane in which optical manipulation of the beam is performed. The beams are then preferably laterally expanded in this system plane only, and then spatially dispersed in the beam expansion plane, preferably by means of a diffraction grating. The light is directed through a polarization rotation device, preferably a liquid crystal cell, pixelated along the wavelength dispersive direction such that each pixel operates on a separate wavelength. When the appropriate control voltage is applied to a pixel, the polarization of the light signal passing through that pixel is rotated. The wavelength dispersed beams from all of the pixels are then recombined, and are passed towards a polarization selective device, aligned such that only selected polarization components are transmitted out of the switch.
摘要翻译：光纤，波长选择开关，特别适用于通道阻塞应用。输入信号被转换成相对于其中执行光束的光学操作的平面具有预定极化的光束。然后优选地，梁在该系统平面中仅横向膨胀，然后优选地通过衍射光栅在空间上分散在光束扩展平面中。光被引导通过偏振旋转装置，优选地是沿着波长色散方向像素化的液晶单元，使得每个像素在单独的波长上操作。当对像素施加适当的控制电压时，通过该像素的光信号的偏振旋转。然后将来自所有像素的波长分散光束重新组合，并且被传送到偏振选择装置，对准使得仅选择的偏振分量被传送出开关。

6. 发明授权

US07435939B2 Dynamic optical phase shifter compensator 有权
标题翻译：动态光学移相器补偿器
公开(公告)号：US07435939B2
公开(公告)日：2008-10-14
申请号：US10556308
申请日：2004-05-09
申请人： SeongWoo Suh , Yossi Corem
发明人： SeongWoo Suh , Yossi Corem
IPC分类号： G02F1/01
CPC分类号： G02F1/13318 , G02F1/0121 , G02F1/31 , G02F2203/055 , G02F2203/12 , G02F2203/21 , G02F2203/50
摘要： A birefringent, electrically-controlled, wavelength selective, pixelated optical phase shifting device, in which the correct drive voltage for a desired phase shift through any pixel can be determined independently of changes in the drive voltage arising from changes in the environmental conditions, generally temperature. This is achieved by mounting a monitor phase shifting element controlled by its own drive voltage, in close proximity to the pixelated phase shifter, such that the monitor element and the phase shifter experience the same environmental condition. A probe optical beam of predefined wavelength is directed through the monitor element, and the transmitted beam measured as a function of the monitor drive voltage. This functional relationship is used to define the environmental condition in which the monitor element and the phase shifter, are situated, and the correct drive voltage for application to any phase shifter pixel can be determined.
摘要翻译：双折射，电控波长选择性像素化的光学相移装置，其中可以独立于由环境条件的变化引起的驱动电压的变化来确定用于期望的通过任何像素的相移的正确驱动电压，通常温度。这通过安装由其自身的驱动电压控制的监视器相移元件来实现，其紧邻像素化移相器，使得监视器元件和移相器经历相同的环境条件。预定波长的探测光束被引导通过监视器元件，并且根据监视器驱动电压测量发射光束。该功能关系用于定义监视元件和移相器所在的环境条件，并且可以确定适用于任何移相器像素的正确的驱动电压。

7. 发明申请

US20040120683A1 Fiber optical attenuator 有权
标题翻译：光纤衰减器
公开(公告)号：US20040120683A1
公开(公告)日：2004-06-24
申请号：US10657743
申请日：2003-09-05
申请人： Xtellus, Inc.
发明人： Gil Cohen
IPC分类号： G02B006/00 , G02F001/035
CPC分类号： G02F1/1326 , G02B6/266 , G02F1/0115 , G02F1/134309 , G02F1/1396 , G02F1/2955 , G02F2201/04 , G02F2201/17 , G02F2203/48
摘要： A fiber optical attenuator utilizing the cut-off phenomenon for single mode propagation of an optical wave down a single mode fiber, comprising an element such as a pixelated liquid crystal element, capable of spatially changing the phase across the cross section of an input optical signal. Such a spatial phase change is equivalent to a change in the mode structure of the propagating wave. The signal propagating in the single mode output fiber is attenuated in accordance with the extent to which higher order modes are mixed into the low order mode originally present. When the mode is completely transformed to higher order modes, the wave is effectively completely blocked from entering the output single-mode fiber, and the attenuation is high. The level of attenuation is determined by the fraction of the wave which is converted to modes other than the lowest order mode, and is thus controllable by the voltage applied to the pixels of the liquid crystal element.
摘要翻译：一种光纤衰减器，其利用用于单模光纤单模传播的截止现象的光纤衰减器，其包括诸如像素化液晶元件的元件，其能够在输入光信号的横截面上空间改变相位。这样的空间相位变化相当于传播波的模式结构的变化。在单模输出光纤中传播的信号根据最初存在的低阶模式混合到高阶模式的程度而衰减。当模式完全转换为高阶模式时，波被有效完全阻止进入输出单模光纤，衰减高。衰减的水平由转换成除了最低阶模式之外的模式的波的分数确定，并且因此可以通过施加到液晶元件的像素的电压来控制。

8. 发明申请

US20070279738A1 Single-Pole Optical Wavelength Selector 有权
标题翻译：单极光波长选择器
公开(公告)号：US20070279738A1
公开(公告)日：2007-12-06
申请号：US10580832
申请日：2003-11-26
申请人： SeongWoo Suh , Yossi Corem
发明人： SeongWoo Suh , Yossi Corem
IPC分类号： G02B27/28
CPC分类号： G02B6/29308 , G02B6/272 , G02B6/2766 , G02B6/2931 , G02B6/29313
摘要： A single-pole, wavelength selective switch in which thee input optical signal (18, 19) is converted to a light beam having a defined polarization, such as S-polarization, with respect to the system plane. The beam is laterally expanded in the system plane, and then spatially dispersed in the same plane as that of the beam expansion, preferably by means of a diffraction grating (34). The light is directed through a polarization conversion device, preferably a liquid crystal cell (24), pixelated along the wavelength dispersive direction such that each pixel operates on a separate wavelength. When the appropriate control voltage is applied to a pixel, the polarization of the light signal passing through that pixel is rotated, such as from S to P. The wavelength dispersed beams from the pixels are recombined, and are passed towards another polarizer at the switch output, aligned such that only the selected polarization components are allowed to exit.
摘要翻译：输入光信号（18,19）的单极波长选择开关相对于系统平面被转换为具有限定的极化（例如S偏振）的光束。光束在系统平面中横向膨胀，然后空间上分散在与光束膨胀相同的平面中，优选地通过衍射光栅（34）。光被引导通过偏振转换装置，优选是沿着波长色散方向像素化的液晶单元（24），使得每个像素在单独的波长上操作。当对像素施加适当的控制电压时，通过该像素的光信号的偏振例如从S到P旋转。来自像素的波长分散光束被重新组合，并且在开关处被传递到另一个偏振器输出，对齐使得仅允许选择的偏振分量退出。

9. 发明授权

US07046326B2 Multi-pixel liquid crystal cell array 有权
标题翻译：多像素液晶单元阵列
公开(公告)号：US07046326B2
公开(公告)日：2006-05-16
申请号：US10391510
申请日：2003-03-17
申请人： Lindsay W. Austin , Shanti A. Cavanaugh , Louis J. Molinari , Mark E. Young
发明人： Lindsay W. Austin , Shanti A. Cavanaugh , Louis J. Molinari , Mark E. Young
IPC分类号： G02F1/1339
CPC分类号： G02F1/31 , G02F1/093 , G02F1/1326 , G02F1/133382 , G02F1/133528 , G02F1/1339 , G02F2001/133521 , G02F2001/13355 , G02F2201/305 , G02F2203/055 , G02F2203/06 , G02F2203/12
摘要： A multi-pixel optical processing system includes a multi-pixel liquid crystal cell platform having a deposited metal gasket moisture barrier bonding two opposing substrates each having a spacer layer to accurately control cell gap thickness. A library of specialized pixel constructs is included that can be configured to yield predetermined optical functions at referential locations in the platform. A control system is provided utilizing a time division scheme that multiplexes temperature sensing and heating functions across an optional integrated active thermal element that may be integrated inside the liquid crystal platform. A calibration process characterizes the profile of the cell and generates a polynomial regression formula that provides the voltage drive output for all pixels in the platform based on the platform temperature and state of each pixel.
摘要翻译：多像素光学处理系统包括具有沉积的金属衬垫湿气屏障的多像素液晶单元平台，其结合两个相对的基板，每个基板具有间隔层以精确地控制单元间隙厚度。包括专门的像素结构的库，其可被配置为在平台的参考位置产生预定的光学功能。提供了一种控制系统，其利用时间分割方案，其跨越可以集成在液晶平台内的可选的集成有源热元件来复用温度感测和加热功能。校准过程表征单元的轮廓，并产生多项式回归公式，其基于平台温度和每个像素的状态为平台中的所有像素提供电压驱动输出。

10. 发明授权

US07035484B2 Tunable optical filter 有权
公开(公告)号：US07035484B2
公开(公告)日：2006-04-25
申请号：US10120562
申请日：2002-04-12
申请人： Yaron Silberberg , Seongwoo Suh , Gil Cohen
发明人： Yaron Silberberg , Seongwoo Suh , Gil Cohen
IPC分类号： G02F1/01 , G02F1/295
CPC分类号： G02B6/29383 , G02B6/272 , G02B6/2766 , G02B6/29358 , G02B6/29367 , G02B6/2937 , G02B6/29395 , G02F1/216 , G02F2203/12
摘要： A tunable optical filter is provided that includes an array of independently tunable filter elements. Each of the elements is located along a different optical path that extends between an input and an output port. Optical assemblies for receiving an incident optical signal for providing a filtered optical signal are also provided. In one embodiment, polarization independent spectral filtering can be achieved. Wavelength selectable add/drop multiplexers and demultiplexers, dynamic gain equalizers and attenuators, optical channel blockers and branch filters, switches, and modulators are also provided. Furthermore, methods for constructing and operating filters consistent with this invention are also provided.

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