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    Ferro-electric azimuth rotator
    21.
    发明授权
    Ferro-electric azimuth rotator 有权
    铁电方位旋转器

    公开(公告)号：US06700694B2

    公开(公告)日：2004-03-02

    申请号：US10164866

    申请日：2002-08-14

    Applicant: Yingyin Zou ,  Feiling Wang ,  Jingwen Zhang

    Inventor： Yingyin Zou ,  Feiling Wang ,  Jingwen Zhang

    IPC: G02F109

    CPC classification number: G02F1/0555 ,  G02F1/0136 ,  G02F1/21 ,  G02F2001/212 ,  G02F2202/40 ,  G02F2203/055 ,  G02F2203/48

    Abstract: An electrically controllable azimuth optical rotator (10) includes a first quarterwave plate (16) for receiving a first beam of electromagnetic energy (22) having a first arbitrary polarization state, and outputting a second beam (122) in response to the first quarterwave plate (16). An electric voltage controlled ferro-electric variable phase retarder (20) aligned at approximately 45 degrees to the first quarterwave plate (16) receives the second beam 122 and provides a third beam 38 in response to the retarder (20). The electric voltage controlled ferro-electric variable phase retarder (20) is characterized by a phase shift of &phgr;=2&agr;, where &agr; is a desired angle of rotation of the first arbitrary polarization state. To provide a voltage-controlled rotation, a second quarterwave plate (18) is aligned either parallel or perpendicular to the first quarterwave plate (16) for receiving the third beam (38) and outputting a fourth beam (46) in response to the retarder (20). As a result, the fourth beam (46) has a polarization state similar to the first arbitrary polarization state but rotated by &agr;.

    Abstract translation: 电可控方位光旋转器（10）包括用于接收具有第一任意偏振状态的第一电磁能束（22）的第一四分之一波片（16），并响应于第一四分之一波片输出第二光束（122） （16）。 与第一四分之一波片（16）大致45度对准的电压控制铁电可变相位延迟器（20）接收第二光束122并响应于延迟器（20）提供第三光束38。 电压控制铁电可变相位延迟器（20）的特征在于phi = 2alpha的相移，其中α是第一任意偏振态的期望的旋转角。 为了提供电压控制的旋转，第二四分之一波片（18）被平行或垂直于第一四分之一波片（16）对准，用于接收第三波束（38）并响应于延迟器输出第四波束（46） （20）。 结果，第四光束（46）具有与第一任意偏振态类似的旋转α的极化状态。

    High-speed electro-optic modulator
    22.
    发明授权
    High-speed electro-optic modulator 失效
    高速电光调制器

    公开(公告)号：US06330097B1

    公开(公告)日：2001-12-11

    申请号：US09288439

    申请日：1999-04-08

    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: G02B2600

    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。

    Thin film electro-optic beam steering device
    23.
    发明授权
    Thin film electro-optic beam steering device 失效
    薄膜电光束转向装置

    公开(公告)号：US06317251B1

    公开(公告)日：2001-11-13

    申请号：US09362208

    申请日：1999-07-28

    Applicant: Feiling Wang

    Inventor： Feiling Wang

    IPC: G02F129

    CPC classification number: G02F1/292 ,  G02F2001/213

    Abstract: A light beam deflector comprising a modified asymmetric Fabry-Perot (Gires-Tournois) etalon having a back reflecting and electrically conducting mirror and a front partially transmitting mirror spaced apart by an electro-optic material, there also being a transparent sheet resistor between the electro-optic material and the front mirror. The invention further comprises a pair of electrodes contacting two generally parallel edges of the transparent sheet resistor so that if different voltages are applied between the electrodes with respect to the back conducting mirror, a front to back electric field which varies in a linear manner from one electrode to the other will be produced. By utilizing an electro-optic material with either a linear longitudinal electro-optic effect or one having a linearized quadratic electro-optic effect, a linear variation of refractive index in the material will be produced between the electrodes, further resulting in a linear phase shift across a light beam impinging on the front and undergoing multiple reflections inside the electro-optic material and still further resulting in an overall deflection of the reflected beam.

    Abstract translation: 一种光束偏转器，包括具有背反射和导电反射镜的修改的不对称法布里 - 珀罗（Gires-Tournois）标准具和由电光材料隔开的前部部分透射镜，在电极之间还具有透明片状电阻器 - 光学材料和前视镜。 本发明还包括一对电极，其接触透明薄片电阻器的两个大致平行的边缘，使得如果在电极之间相对于后导电反射镜施加不同的电压，则以从线性方式与一个线性方式变化的前后电场 将生产电极到另一个。 通过利用具有线性纵向电光效应的电光材料或具有线性二次电光效应的电光材料，将在电极之间产生材料中折射率的线性变化，进一步导致线性相移 穿过照射在前面的光束并且在电光材料内部经历多次反射，并且还进一步导致反射光束的整体偏转。

    High-speed polarization-insensitive electro-optic modulator
    24.
    发明授权
    High-speed polarization-insensitive electro-optic modulator 有权
    高速偏振不敏感电光调制器

    公开(公告)号：US06175667B1

    公开(公告)日：2001-01-16

    申请号：US09157999

    申请日：1998-09-22

    Applicant: Feiling Wang ,  Yingyin Zou ,  Paul Melman ,  Hua Jiang

    Inventor： Feiling Wang ,  Yingyin Zou ,  Paul Melman ,  Hua Jiang

    IPC: G02F1035

    CPC classification number: G02F1/21 ,  G02B6/266 ,  G02F1/0311 ,  G02F1/0551 ,  G02F2203/02 ,  G02F2203/06 ,  G02F2203/48

    Abstract: There is provided a device for use with fiber-optic cables for polarization insensitive amplitude modulation of light comprising a planar electro-optic layer with a reflective conductive mirror electrode on one side and a pair of transparent conductive electrodes on the other. The transparent conductive electrodes have a small separation along a straight line. A GRIN lens has one end in optical contact with the transparent conductive electrodes with its axis located over the line separating the electrodes. An input optical fiber and an output optical fiber are placed in optical contact with the other end of the lens at points which are symmetrically displaced from the axis of the lens. Light coming from input fiber is collimated by the GRIN lens and directed to the transparent electrodes, through the electro-optic layer and to the mirror from which it is reflected and refocused by the GRIN lens onto the output fiber. Applying a voltage between any of the transparent electrodes and the reflecting electrode changes the optical path length for half the beam so that when it is refocused on the output fiber, the two halves interfere constructively of destructively, depending on the change in path length. In one version, the electro-optic layer is a PLZT ceramic plate, while in others, it is a thick or thin film. In still other versions, two or more electro-optic layers are used in series in order to reduce the voltage required for the same optical path length change. A means to eliminate residual sensitivity to polarization sensitivity is described.

    Abstract translation: 提供了一种用于光的偏振不敏感幅度调制的光纤电缆的装置，包括在一侧具有反射导电镜电极的平面电光层和另一侧的一对透明导电电极。 透明导电电极沿着直线具有小的间隔。 GRIN透镜的一端与透明导电电极光学接触，其轴线位于分离电极的线上。 输入光纤和输出光纤被放置成与透镜的另一端在与透镜的轴对称位移的点处光学接触。 来自输入光纤的光由GRIN透镜准直，并通过电光层和反射镜引导到透明电极，并将其从GRIN透镜反射并重新聚焦到输出光纤上。 在任何透明电极和反射电极之间施加电压，改变光束的一半的光路长度，使得当它被重新聚焦在输出光纤上时，根据路径长度的变化，这两半的破坏性构造地相互干扰。 在一个版本中，电光层是PLZT陶瓷板，而在其它版本中，它是厚或薄的膜。 在其他版本中，串联使用两个或多个电光层，以便减少相同光程长度变化所需的电压。 描述了消除极化灵敏度的残余灵敏度的手段。

    Optically characterizing turbid media and substances in turbid media
    25.
    发明授权
    Optically characterizing turbid media and substances in turbid media 有权
    在混浊介质中光学表征混浊介质和物质

    公开(公告)号：US08406856B2

    公开(公告)日：2013-03-26

    申请号：US13139479

    申请日：2009-06-20

    Applicant: Feiling Wang

    Inventor： Feiling Wang

    IPC: A61B6/00

    CPC classification number: A61B5/14532 ,  A61B5/0073 ,  A61B5/1455

    Abstract: For optically interrogating substances overlaid by turbid media a method of wavefront manipulation by means of binary phase masking is disclosed. Through altering the degree of mode conformity between the fields reaching the collection optics and the field distributions of the propagation modes of optical waveguides the disclosed method can be used to suppress the collection of short-range light originated near the collection optics while permitting unimpeded collection of light originated from sites substantially behind turbid media.

    Abstract translation: 对于通过混浊介质覆盖的光学询问物质，公开了通过二值相位掩蔽进行波前操作的方法。 通过改变到达采集光学的场的模式一致性程度和光波导的传播模式的场分布，可以使用所公开的方法来抑制在收集光学器件附近产生的短距离光的收集，同时允许不受阻碍地收集 光起源于大部分混浊介质后的位置。

    OPTICALLY CHARACTERIZING TURBID MEDIA AND SUBSTANCES IN TURBID MEDIA
    27.
    发明申请
    OPTICALLY CHARACTERIZING TURBID MEDIA AND SUBSTANCES IN TURBID MEDIA 有权
    在涡轮介质中光学表征涡轮介质和物质

    公开(公告)号：US20110245686A1

    公开(公告)日：2011-10-06

    申请号：US13139479

    申请日：2009-06-20

    Applicant: Feiling Wang

    Inventor： Feiling Wang

    IPC: A61B6/08

    CPC classification number: A61B5/14532 ,  A61B5/0073 ,  A61B5/1455

    Abstract: For optically interrogating substances overlaid by turbid media a method of wavefront manipulation by means of binary phase masking is disclosed. Through altering the degree of mode conformity between the fields reaching the collection optics and the field distributions of the propagation modes of optical waveguides the disclosed method can be used to suppress the collection of short-range light originated near the collection optics while permitting unimpeded collection of light originated from sites substantially behind turbid media.

    Abstract translation: 对于通过混浊介质覆盖的光学询问物质，公开了通过二值相位掩蔽进行波前操作的方法。 通过改变到达采集光学的场的模式一致性程度和光波导的传播模式的场分布，可以使用所公开的方法来抑制在收集光学器件附近产生的短距离光的收集，同时允许不受阻碍地收集 光起源于大部分混浊介质后的位置。

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