公开(公告)号：US06697550B2

公开(公告)日：2004-02-24

申请号：US10045670

申请日：2001-10-24

Applicant: Qiushui Chen

Inventor： Qiushui Chen

IPC: G02B635

CPC classification number: G02F1/31 ,  G02B6/272 ,  G02B6/2793 ,  G02F1/093 ,  G02F2203/06

Abstract: An optical switch for switching an incoming light signal to one of a number of output ports in a polarization independent manner. The optical switch includes a walk-off device, and a compensator which compensates for walk-off distance variations of two polarized beams, with orthogonal polarization directions, associated with the walk-off device.

Abstract translation: 一种用于以独立于偏振的方式将输入光信号切换到多个输出端口之一的光开关。 该光开关包括一个离散装置和一个补偿器，用于补偿与脱离装置相关联的具有正交偏振方向的两个偏振光束的离散距离变化。

公开(公告)号：US06404537B1

公开(公告)日：2002-06-11

申请号：US09519293

申请日：2000-03-06

Applicant: Paul Melman ,  Yingyin Zou ,  Qiushui Chen

Inventor： Paul Melman ,  Yingyin Zou ,  Qiushui Chen

IPC: G05F133

CPC classification number: G02F1/0555 ,  G02F1/0136

Abstract: A polarization transformer includes at least one plate of transparent polycrystalline material which has an optical axis oriented perpendicular to a propagation direction of incident radiation having a first polarization state. The plate includes electrodes for applying an electric field across a plane of the plate perpendicular to the propagation direction so as to provide controlled phase change such that the polarization of radiation transmitted through the polarization transformer is transformed from the first polarization state to a second polarization state. The plate in a preferred embodiment comprises a ferroelectric complex oxide such as lead lanthanum zirconate titanate (PLZT) material. Such a material provides devices that have very fast response (on the order of microseconds) and low insertion loss.

Abstract translation: 偏振变换器包括至少一个透明多晶材料板，其具有垂直于具有第一偏振状态的入射辐射的传播方向定向的光轴。 板包括用于垂直于传播方向在平板平面上施加电场的电极，以便提供受控的相位变化，使得透过偏振变换器的辐射的偏振从第一偏振状态转变为第二偏振状态 。 优选实施例中的板包括铁电复合氧化物，例如锆钛酸铅镧（PLZT）材料。 这种材料提供了具有非常快的响应（微秒数量级）和低插入损耗的器件。

公开(公告)号：US08514380B2

公开(公告)日：2013-08-20

申请号：US12763173

申请日：2010-04-19

Applicant: Yingyin Kevin Zou ,  Hongzhi Zhao ,  Qiushui Chen

Inventor： Yingyin Kevin Zou ,  Hongzhi Zhao ,  Qiushui Chen

IPC: G01N21/00 ,  G01J4/00

CPC classification number: G01N21/21

Abstract: A polarization imaging apparatus measures the Stokes image of a sample. The apparatus consists of an optical lens set, a first variable phase retarder (VPR) with its optical axis aligned 22.5°, a second variable phase retarder with its optical axis aligned 45°, a linear polarizer, a imaging sensor for sensing the intensity images of the sample, a controller and a computer. Two variable phase retarders were controlled independently by a computer through a controller unit which generates a sequential of voltages to control the phase retardations of the first and second variable phase retarders. A auto-calibration procedure was incorporated into the polarization imaging apparatus to correct the misalignment of first and second VPRs, as well as the half-wave voltage of the VPRs. A set of four intensity images, I0, I1, I2 and I3 of the sample were captured by imaging sensor when the phase retardations of VPRs were set at (0,0), (π,0), (π,π) and (π/2,π), respectively. Then four Stokes components of a Stokes image, S0, S1, S2 and S3 were calculated using the four intensity images.

Abstract translation: 偏振成像装置测量样品的斯托克斯图像。 该装置由光学透镜组，其光轴对准22.5°的第一可变相位延迟器（VPR），其光轴对准45°的第二可变相位延迟器，线性偏振器，用于感测强度图像的成像传感器 的样品，控制器和计算机。 两个可变相位延迟器由计算机通过控制器单元独立控制，该控制器单元产生一个电压序列，以控制第一和第二可变相位延迟器的相位延迟。 自动校正程序被并入到偏振成像装置中以校正第一和第二VPR的偏移以及VPR的半波电压。 当VPR的相位延迟设定为（0,0），（pi，0），（pi，pi）和（pi，pi）时，通过成像传感器捕获一组四个强度图像I0，I1，I2和I3 pi / 2，pi）。 然后使用四个强度图像计算斯托克斯图像S0，S1，S2和S3的四个斯托克斯分量。

公开(公告)号：US20070296958A1

公开(公告)日：2007-12-27

申请号：US11701738

申请日：2007-02-02

Applicant: Yingyin Zou ,  Qiushui Chen ,  Hongzhi Zhao

Inventor： Yingyin Zou ,  Qiushui Chen ,  Hongzhi Zhao

IPC: G01N21/00

CPC classification number: G01N21/21

Abstract: A polarization imaging apparatus measures the Stokes image of a sample. The apparatus consists of an optical lens set 11, a linear polarizer 14 with its optical axis 18, a first variable phase retarder 12 with its optical axis 16 aligned 22.5° to axis 18, a second variable phase retarder 13 with its optical axis 17 aligned 45° to axis 18, a imaging sensor 15 for sensing the intensity images of the sample, a controller 101 and a computer 102. Two variable phase retarders 12 and 13 were controlled independently by a computer 102 through a controller unit 101 which generates a sequential of voltages to control the phase retardations of VPRs 12 and 13. A set of four intensity images, I0, I1, I2 and I3 of the sample were captured by imaging sensor 15 when the phase retardations of VPRs 12 and 13 were set at (0,0), (π,0), (π,π) and (π/2,π), respectively Then four Stokes components of a Stokes image, S0, S1, S2 and S3 were calculated using the four intensity images.

Abstract translation: 偏振成像装置测量样品的斯托克斯图像。 该装置由光学透镜组11，具有其光轴18的线性偏振器14，其光轴16与轴线18对准22.5°的第一可变相位延迟器12，其光轴17对准的第二可变相位延迟器13 与轴线18成45°的角度，用于感测样本的强度图像的成像传感器15，控制器101和计算机102。 两个可变相位延迟器12和13由计算机102通过控制器单元101独立地控制，控制器单元101产生电压的顺序以控制VPR 12和13的相位延迟。 样本的四个强度图像的集合是I，I，I，I，I 2和I 3， 当VPR 12和13的相位延迟分别设置为（0,0），（pi，0），（pi，pi）和（pi / 2，pi）时，由成像传感器15捕获。 使用四个强度图像计算斯托克斯图像，S 0，S 1，S 2和S 3 3。

公开(公告)号：US20100201969A1

公开(公告)日：2010-08-12

申请号：US12763173

申请日：2010-04-19

Applicant: Yingyin Kevin Zou ,  Hongzhi Zhao ,  Qiushui Chen

Inventor： Yingyin Kevin Zou ,  Hongzhi Zhao ,  Qiushui Chen

IPC: G01N21/00

CPC classification number: G01N21/21

Abstract: A polarization imaging apparatus measures the Stokes image of a sample. The apparatus consists of an optical lens set, a first variable phase retarder (VPR) with its optical axis aligned 22.5°, a second variable phase retarder with its optical axis aligned 45°, a linear polarizer, a imaging sensor for sensing the intensity images of the sample, a controller and a computer. Two variable phase retarders were controlled independently by a computer through a controller unit which generates a sequential of voltages to control the phase retardations of the first and second variable phase retarders. A auto-calibration procedure was incorporated into the polarization imaging apparatus to correct the misalignment of first and second VPRs, as well as the half-wave voltage of the VPRs. A set of four intensity images, I0, I1, I2 and I3 of the sample were captured by imaging sensor when the phase retardations of VPRs were set at (0,0), (π,0), (π,π) and (π/2,π), respectively. Then four Stokes components of a Stokes image, S0, S1, S2 and S3 were calculated using the four intensity images.

Abstract translation: 偏振成像装置测量样品的斯托克斯图像。 该装置由光学透镜组，其光轴对准22.5°的第一可变相位延迟器（VPR），其光轴对准45°的第二可变相位延迟器，线性偏振器，用于感测强度图像的成像传感器 的样品，控制器和计算机。 两个可变相位延迟器由计算机通过控制器单元独立控制，该控制器单元产生一个电压序列，以控制第一和第二可变相位延迟器的相位延迟。 自动校正程序被并入到偏振成像装置中以校正第一和第二VPR的偏移以及VPR的半波电压。 当VPR的相位延迟设定为（0,0），（＆pgr;，0），（＆pgr;，＆pgr;）时，通过成像传感器捕获一组四个强度图像I0，I1，I2和I3。 ）和（＆pgr; / 2，＆pgr;）。 然后使用四个强度图像计算斯托克斯图像S0，S1，S2和S3的四个斯托克斯分量。

公开(公告)号：US07068688B2

公开(公告)日：2006-06-27

申请号：US10700934

申请日：2003-11-04

Applicant: Yingyin Zou ,  Qiushui Chen ,  Run Zhang ,  Hua Jiang

Inventor： Yingyin Zou ,  Qiushui Chen ,  Run Zhang ,  Hua Jiang

IPC: H01S3/115

CPC classification number: H01S3/109 ,  H01S3/09415 ,  H01S3/115 ,  H01S3/1611 ,  H01S3/1673

Abstract: An electro-optic Q-switch for generating sequence of laser pulses was disclosed. The Q-switch comprises a quadratic electro-optic material and is connected with an electronic unit generating a radio frequency wave with positive and negative pulses alternatively. The Q-switch is controlled by the radio frequency wave in such a way that laser pulse is generated when the radio frequency wave changes its polarity

Abstract translation: 公开了一种用于产生激光脉冲序列的电光Q开关。 Q开关包括二次电光材料，并与电子单元连接，该电子单元产生具有正和负脉冲的射频。 该Q开关由射频控制，使得当射频改变其极性时产生激光脉冲

公开(公告)号：US06522456B2

公开(公告)日：2003-02-18

申请号：US09848766

申请日：2001-05-04

Applicant: Qiushui Chen ,  Hua Jiang ,  Yingyin Zou ,  Dean Tsang ,  Paul Melman ,  Feiling Wang ,  Guanghai Jin ,  Jing Zhao

Inventor： Qiushui Chen ,  Hua Jiang ,  Yingyin Zou ,  Dean Tsang ,  Paul Melman ,  Feiling Wang ,  Guanghai Jin ,  Jing Zhao

IPC: G02F100

CPC classification number: G02F1/21 ,  G02F2001/212 ,  G02F2202/40 ,  G02F2203/055 ,  G02F2203/48

Abstract: An apparatus and method for filtering an optical input is disclosed. In an illustrative embodiment, an optical input is split into polarization components along separate paths. The polarization components are then fed into a first electro-optic device that includes a set of electrodes across which a voltage is applied to adjust a wavelength transmission characteristic of the device. A section of the first device positioned between the electrodes preferably has a birefringence that is adjusted depending on the voltage applied across the electrodes. The adjusted components of the optical input are thereafter combined to produce an optical output. Accordingly, the optical input can be attenuated based on the voltage applied to electrodes of the first electro-optic device.

公开(公告)号：US06404538B1

公开(公告)日：2002-06-11

申请号：US09695538

申请日：2000-10-24

Applicant: Qiushui Chen ,  Gary Y. Wang ,  Paul Melman ,  Kevin Zou ,  Hua Jiang ,  Run Zhang ,  Jing Zhao ,  Dean Tsang ,  Feiling Wang

Inventor： Qiushui Chen ,  Gary Y. Wang ,  Paul Melman ,  Kevin Zou ,  Hua Jiang ,  Run Zhang ,  Jing Zhao ,  Dean Tsang ,  Feiling Wang

IPC: G02F100

CPC classification number: G02F1/055 ,  G02F1/0555 ,  G02F1/0556 ,  G02F2201/17 ,  G02F2203/06 ,  G02F2203/48

Abstract: An optical modulator is provided to control the intensity of a transmitted or reflected light. In a transmission mode, a separator splits arbitrarily polarized light into two polarization rays and one is made to travel a separate path from the other. A recombiner causes the two rays to recombine at an output unless an electro-optic phase retarder changes the polarization of the two rays, in which case, both of them miss the output by an amount which is a function of the voltage on the retarder. A normally-off version with low polarization mode dispersion is obtained by changing the orientation of the recombiner. A normally-on version with low polarization mode dispersion is obtained with a passive polarization direction rotator. Similar results can be obtained in a reflection mode where the input and output are on the same side of the modulator. Versions using a GRIN lens are particularly suited to modulation of light out of and back into fiber-optic cables. The device can be operated as a variable optical attenuator, an optical switch, or a high speed modulator and is insensitive to polarization of the input light. A preferred material for the phase retarder is a hot-pressed ceramic lead lanthanum zirconate titanate composition.

Abstract translation: 提供光调制器以控制透射或反射光的强度。 在透射模式中，分离器将任意偏振光分离成两个偏振光，一个偏振光从另一个行进。 重组器会导致两条射线在输出端重新组合，除非电光相位延迟器改变两个射线的极化，在这种情况下，它们都将输出误差减去延迟器上的电压的函数。 通过改变重组器的取向，获得具有低偏振模色散的常关型。 使用无源偏振方向旋转器获得具有低偏振模色散的常导版本。 在输入和输出位于调制器的同一侧的反射模式下可以获得类似的结果。 使用GRIN镜头的版本特别适用于调制光纤到光纤的光纤。 该器件可以作为可变光衰减器，光开关或高速调制器操作，并且对输入光的偏振不敏感。 用于相缓凝剂的优选材料是热压陶瓷铅锆酸镧锆酸盐组合物。

公开(公告)号：US06239900B1

公开(公告)日：2001-05-29

申请号：US09397615

申请日：1999-09-16

Applicant: Qiushui Chen ,  Run Zhang ,  Paul Melman

Inventor： Qiushui Chen ,  Run Zhang ,  Paul Melman

IPC: G02B530

CPC classification number: G02F1/093 ,  G02B5/3083 ,  Y10S372/703

Abstract: In a device having a fiber-optic cables, one that is normally an input and one that is normally an out output for light transmission through the device, a first polarization sensitive deflector encompassing the normal input beam and a second polarization sensitive deflector encompassing the normal output beam is followed by a polarization interchanger that interchanges the polarization of beams traveling from the input to the output and leaves unchanged the polarization of beams traveling from the output to the input. This is, in turn, followed by a third polarization sensitive deflector encompassing the input beam and a fourth polarization sensitive deflector encompassing the output beam. Lastly, a lens having a reflector on the side opposite the input and output fibers reflects light beams from the input to the output and conversely. The deflectors encompassing the input beam are arranged to produce a deflection in one direction and the deflectors encompassing the output beam produce a deflection in another direction at least at a 45° angle to the direction of the deflectors encmpassing the input beam. When light travels backwards from the normal output cable to the input cable, the two-dimensional deflections reduce the light that reach the input cable due to imperfections in the optical components, but the deflectors and interchangers are still arranged to maximize the transmission from the normal input to the output cable.

Abstract translation: 在具有光纤电缆的设备中，通常是输入端的设备和通常通过设备的光传输的外部输出的设备，包含正常输入光束的第一偏振敏感偏转器和包围正常输入光束的第二偏振敏感偏转器 输出光束后面是一个极化交换器，它将从输入端传播到输出端的光束的极化相互交换，并保持从输出到输入的光束的极化。 这又是一个围绕输入光束的第三偏振敏感偏转器和包围输出光束的第四偏振敏感偏转器。 最后，在与输入和输出光纤相对的一侧具有反射器的透镜反射从输入到输出的光束，反之亦然。 围绕输入光束的偏转器被布置成在一个方向上产生偏转，并且包围输出光束的偏转器在另一个方向上产生与包围输入光束的偏转器的方向至少成45°角的偏转。 当光从正常输出电缆向后传播到输入电缆时，由于光学部件的缺陷，二维偏转减少了到达输入电缆的光，但是偏转器和互换器仍然布置成使从正常 输入到输出电缆。

公开(公告)号：US20140185052A1

公开(公告)日：2014-07-03

申请号：US13727782

申请日：2012-12-27

Applicant: Qiushui Chen

Inventor： Qiushui Chen

IPC: G01B9/02

CPC classification number: G01J3/0224 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/0237 ,  G01J3/4537

Abstract: The present invention is related to a Fourier-transform spectrometer arrangement comprising a first polarizer, a birefringent plate, a pair of birefringent wedges, a second polarizer, a photo detector, and a control unit. According to the invention, the cross sections of the two birefringent wedges of the birefringent wedge pair are similar triangles, the first wedge is fixed, the second wedge is capable of linearly movement along the side, the optic axes of the pair of birefringent wedges are parallel to each other and orthogonal to the optic axis of the birefringent plate, the polarization of the first polarizer is in 45 degrees with the optical axis of the birefringent plate, the polarization of the first polarizer is also in 45 degrees with the optical axis of the pair of birefringent wedges, the polarization of the second polarizer is parallel, or orthogonal, to the polarization of the first polarizer.

Abstract translation: 本发明涉及包括第一偏振器，双折射板，一对双折射楔形物，第二偏振器，光电检测器和控制单元的傅立叶变换光谱仪装置。 根据本发明，双折射楔形对的两个双折射楔的横截面是相似的三角形，第一楔形件是固定的，第二楔形件能够沿着一侧线性移动，该对双折射楔的光轴是 彼此平行并且与双折射板的光轴正交，第一偏振片的偏振度与双折射板的光轴成45度，第一偏振片的偏振度也在45度的光轴 所述一对双折射楔形物，所述第二偏振片的偏振度与所述第一偏振器的偏振平行或正交。