公开(公告)号：US6055174A

公开(公告)日：2000-04-25

申请号：US327146

申请日：1999-06-07

申请人： Gan Zhou ,  Xin An ,  Fai Ho Mok ,  Demetri Psaltis

发明人： Gan Zhou ,  Xin An ,  Fai Ho Mok ,  Demetri Psaltis

IPC分类号： G11B7/0065 ,  G11B7/125 ,  G11C13/04 ,  G11C11/46

CPC分类号： G11B7/127 ,  G11C13/042 ,  G11B7/0065

摘要： A method and a compact apparatus to read shift-multiplexed holograms on a storage medium without the need for any lenses, and without the need for moving the storage medium. The shift-multiplexed holograms have centers at different locations. The apparatus can generate an array of diverging spherical waves of reference beams, each for illuminating one of the holograms. Each hologram is read as an image on a detector array by illuminating that hologram with a corresponding diverging spherical wave of reference beam. Different holograms can be read by illuminating the medium with a different diverging spherical reference beam. The diverging beams can be from an array of sources, or can be from switching one source.

摘要翻译： 一种在存储介质上读取移位复用全息图而不需要任何透镜并且不需要移动存储介质的方法和紧凑的设备。 移位复用全息图在不同位置具有中心。 该装置可以产生参考光束的发散球面波阵列，每个用于照射全息图之一。 通过用相应的参考光束发散的球面波照射全息图，将每个全息图作为图像读取在检测器阵列上。 可以通过用不同的发散球形参考光束照射介质来读取不同的全息图。 发散光束可以来自一组源，或者可以来自一个源的切换。

公开(公告)号：US06222755B1

公开(公告)日：2001-04-24

申请号：US09520399

申请日：2000-03-08

申请人： Gan Zhou ,  Xin An ,  Fai Ho Mok ,  Demetri Psaltis

发明人： Gan Zhou ,  Xin An ,  Fai Ho Mok ,  Demetri Psaltis

IPC分类号： G11C1304

CPC分类号： G11B7/127 ,  G11B7/0065 ,  G11C13/042

摘要： A method and a compact apparatus to read shift-multiplexed holograms on a storage medium without the need for any lenses, and without the need for moving the storage medium. The shift-multiplexed holograms have centers at different locations. The apparatus can generate an array of diverging spherical waves of reference beams, each for illuminating one of the holograms. Each hologram is read as an image on a detector array by illuminating that hologram with a corresponding diverging spherical wave of reference beam. Different holograms can be read by illuminating the medium with a different diverging spherical reference beam. The diverging beams can be from an array of sources, or can be from switching one source.

摘要翻译： 一种在存储介质上读取移位复用全息图而不需要任何透镜并且不需要移动存储介质的方法和紧凑的设备。 移位复用全息图在不同位置具有中心。 该装置可以产生参考光束的发散球面波阵列，每个用于照射全息图之一。 通过用相应的参考光束发散的球面波照射全息图，将每个全息图作为图像读取在检测器阵列上。 可以通过用不同的发散球形参考光束照射介质来读取不同的全息图。 发散光束可以来自一组源，或者可以来自一个源的切换。

公开(公告)号：US06898167B2

公开(公告)日：2005-05-24

申请号：US09924218

申请日：2001-08-07

申请人： Tsuen-Hsi Liu ,  Demetri Psaltis ,  Fai H. Mok ,  Gan Zhou

发明人： Tsuen-Hsi Liu ,  Demetri Psaltis ,  Fai H. Mok ,  Gan Zhou

IPC分类号： G11B7/0045 ,  G11B7/005 ,  G11B7/0065 ,  G11B7/007 ,  G11B7/12 ,  G11B7/135 ,  G11B7/00

CPC分类号： G11B7/1381 ,  G03H2001/0415 ,  G03H2001/0417 ,  G03H2001/266 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/0065 ,  G11B7/007 ,  G11B7/00772 ,  G11B7/12 ,  G11B7/28

摘要： An optical memory for storing and/or reading data on an optical disk. The optical disk incorporates a material in which holographic gratings can be created, and subsequently detected, at plural locations within the disk by an electro-optical head. Creation and detection of holographic gratings with variable diffraction efficiency is possible with the electro-optical head. Multiple holographic gratings can also be created at each one of the plural locations via a beam of light which has a different wavelength or point of focus. These data elements can be read by the electro-optical head using a beam of light sequentially varied in wavelength or point of focus to correspond to the multiple holographic gratings to be recorded.

摘要翻译： 一种用于在光盘上存储和/或读取数据的光学存储器。 光盘包括一种材料，其中可以通过电光头在光盘内的多个位置处产生全息光栅并随后检测全息光栅。 使用电光头可以创建和检测具有可变衍射效率的全息光栅。 也可以通过具有不同波长或焦点的光束在多个位置的每一个处产生多个全息光栅。 这些数据元素可以由电光头使用在波长或焦点上顺序变化的光束对应于待记录的多个全息光栅。

公开(公告)号：US5982513A

公开(公告)日：1999-11-09

申请号：US20469

申请日：1998-02-09

申请人： Gan Zhou ,  Demetri Psaltis ,  Fai Mok ,  Allen Pu

发明人： Gan Zhou ,  Demetri Psaltis ,  Fai Mok ,  Allen Pu

IPC分类号： G03H1/26

CPC分类号： G03H1/26

摘要： A method and a system to re-align onto a detector array a holographic image of a Fourier region hologram stored in a medium, with the medium spinning around a first axis, and the hologram being generated by a reference beam and a signal beam. In generating the hologram, the reference beam is incident on the medium with respect to a second axis at a second-axis-incident angle, and a third axis at a third-axis-incident angle, such that the holographic image of the hologram when reproduced by the reference beam is aligned onto the detector array. Also, the three axes are substantially orthogonal to each other. As the medium spins, the medium's orientation can change through tilting with respect to the second and the third axes so that the holographic image when reproduced by the reference beam is not aligned onto the detector array. In one embodiment, the holographic image is re-aligned onto the detector array by tilting the reference beam such that when re-aligned, the incident angle of the reference beam on the medium with respect to the second axis is intentionally tilted to be different from the second-axis-incident angle, and with respect to the third axis to be different from the third-axis-incident angle.

摘要翻译： 一种方法和系统，用于将介质围绕第一轴旋转，并且由参考光束和信号光束产生的全息图将存储在介质中的傅立叶区域全息图的全息图像重新对准到检测器阵列。 在产生全息图时，参考光束以第二轴入射角相对于第二轴入射在介质上，第三轴以第三轴入射角入射，使得全息图的全息图当 由参考光束再现被对准到检测器阵列上。 此外，三个轴线基本上彼此正交。 当介质旋转时，介质的取向可以通过相对于第二和第三轴的倾斜而改变，使得当被参考光束再现时的全息图像未对准检测器阵列。 在一个实施例中，通过倾斜参考光束将全息图像重新对准到检测器阵列上，使得当重新对准时，介质上参考光束相对于第二轴的入射角有意地倾斜以与 第二轴入射角，并且相对于第三轴相对于第三轴入射角不同。

公开(公告)号：US06272095B1

公开(公告)日：2001-08-07

申请号：US08427721

申请日：1995-04-21

申请人： Tsuen-Hsi Liu ,  Demetri Psaltis ,  Fai H. Mok ,  Gan Zhou

发明人： Tsuen-Hsi Liu ,  Demetri Psaltis ,  Fai H. Mok ,  Gan Zhou

IPC分类号： G11B700

CPC分类号： G11B7/1381 ,  G03H2001/0415 ,  G03H2001/0417 ,  G03H2001/266 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/0065 ,  G11B7/007 ,  G11B7/00772 ,  G11B7/12 ,  G11B7/28

摘要： An optical memory for storing and/or reading data on an optical disk. The optical disk incorporates a material in which holographic gratings can be created at plural locations within the disk. An electro-optical head which is capable of creating these holographic gratings at any one of the plural locations is employed. The head is additionally capable of detecting the presence or absence of a holographic grating at any one of these plural locations. The presence of the holographic grating could indicate a first binary state and the absence of the holographic grating indicate a second state. Alternately, the electro-optical head could be used to vary the diffraction efficiency of the holographic gratings during their creation. In that case, the head would also be capable of detecting this variation in efficiency and produce a proportional detection signal. This signal would be used as an indicator of the value of the stored data element. The material of the optical disk is further capable of having multiple holographic gratings created at each one of the plural locations. These multiple holographic gratings are created via a beam of light from the electro-optical head which has a different wavelength or point of focus. In reading these holographic gratings, a beam of light generated by the electro-optical head is sequentially varied in wavelength or point of focus to correspond to the wavelength or point of focus and the sequence of wavelengths or points of focus employed to record each one of the data elements recorded.

摘要翻译： 一种用于在光盘上存储和/或读取数据的光学存储器。 光盘结合了一种材料，其中可以在盘内的多个位置处产生全息光栅。 采用能够在多个位置的任何一个处产生这些全息光栅的电光头。 头部还能够在这些多个位置中的任何一个处检测全息光栅的存在或不存在。 全息光栅的存在可以指示第一二进制状态，并且不存在全息光栅指示第二状态。 或者，电光头可以用于改变全息光栅在其创建期间的衍射效率。 在这种情况下，磁头还能够检测这种效率变化并产生比例检测信号。 该信号将用作存储的数据元素的值的指示符。 光盘的材料还能够具有在多个位置中的每一个处产生的多个全息光栅。 这些多个全息光栅通过具有不同波长或焦点的电光头的光束产生。 在读取这些全息光栅时，由光电头产生的光束在波长或焦点上依次变化，以对应于波长或聚焦点，并且波长或聚焦点用于记录每个 记录数据元素。

公开(公告)号：US06810171B2

公开(公告)日：2004-10-26

申请号：US10739495

申请日：2003-12-18

申请人： Gan Zhou ,  Kuang-Yi Wu

发明人： Gan Zhou ,  Kuang-Yi Wu

IPC分类号： G02B626

CPC分类号： H04J14/0208 ,  G02B6/272 ,  G02B6/2746 ,  G02B6/29302 ,  G02B6/29349 ,  G02B6/29358 ,  G02B6/29386 ,  H04J14/02 ,  H04J14/0213 ,  H04J14/06

摘要： An optical wavelength router separates an input signal into two complementary output signals. A beamsplitter of the wavelength router separates the input signal into a first beam and a second beam. A first resonator reflects the first beam producing a group delay that is dependent on wavelength. Similarly, a second resonator reflects the second beam. The center wavelength of the second resonator is offset relative to that of the first resonator by one half of the free spectral range of the first resonator, so that the resonance frequencies of the second resonator are matched to the anti-resonance frequencies of the first resonator. The beams reflected by the resonators interfere within the beamsplitter to produce two output signals containing complementary subsets of the spectrum of the input signal (e.g., even optical channels are routed to a first output port and the odd optical channels are routed to a second output port).

摘要翻译： 光波长路由器将输入信号分为两个互补输出信号。 波长路由器的分束器将输入信号分离成第一波束和第二波束。 第一谐振器反射第一光束产生取决于波长的群延迟。 类似地，第二谐振器反射第二光束。 第二谐振器的中心波长相对于第一谐振器的中心波长偏移了第一谐振器的自由光谱范围的一半，使得第二谐振器的谐振频率与第一谐振器的反谐振频率相匹配 。 由谐振器反射的光束在分束器内干涉以产生包含输入信号的光谱的互补子集的两个输出信号（例如，甚至光信道被路由到第一输出端口，并且奇数光信道被路由到第二输出端口 ）。

公开(公告)号：US08166825B2

公开(公告)日：2012-05-01

申请号：US12761825

申请日：2010-04-16

申请人： Gan Zhou

发明人： Gan Zhou

IPC分类号： G01H9/00 ,  G01B9/02

CPC分类号： G01H9/004

摘要： Method and apparatus for noise reduction in ultrasound detection with the steps of: an optical interferometer having a reference arm and a signal arm that includes a polarization-maintaining probing fiber having a reflective coating at a distal end, a way to couple the probing fiber to ultrasound, a way to generate two output beams from the interferometer, a device to modulate the polarization state of the light in the probing fiber, and a detection mechanism responsive to the ultrasonic signals at the distal tip of the probing fiber.

摘要翻译： 用于超声波检测中降噪的方法和装置，其步骤为：具有参考臂和信号臂的光学干涉仪，其包括在远端具有反射涂层的偏振保持探测光纤，将探测光纤耦合到 超声波，从干涉仪产生两个输出光束的方法，用于调制探测光纤中的光的偏振状态的装置，以及响应于探测光纤远端的超声信号的检测机构。

公开(公告)号：US20090270850A1

公开(公告)日：2009-10-29

申请号：US12137664

申请日：2008-06-12

申请人： Gan Zhou ,  Jeffrey R. Gladden

发明人： Gan Zhou ,  Jeffrey R. Gladden

IPC分类号： A61B18/24 ,  A61B18/18 ,  A61B8/13 ,  A61M25/10

CPC分类号： A61B18/24 ,  A61B8/12 ,  A61B8/4488 ,  A61B2018/2272

摘要： Various devices for ablating tissue in a lateral direction and methods of operation thereof. One embodiment of such a device includes: (1) an elongated body configured to carry ablative energy from an ablative energy source associated with a proximal end to a distal end and (2) a distal tip located at the distal end, the distal tip configured to deliver the ablative energy in a direction substantially lateral to a longitudinal axis of the elongated body.

摘要翻译： 用于沿横向消除组织的各种装置及其操作方法。 这种装置的一个实施例包括：（1）细长主体，被配置为将消融能量从与近端相关联的消融能量源运送到远端，以及（2）位于远端的远侧末端， 以沿着细长主体的纵向轴线基本上横向的方向递送烧蚀能量。

公开(公告)号：US06498680B1

公开(公告)日：2002-12-24

申请号：US09717050

申请日：2000-11-20

申请人： Gan Zhou ,  Kuang-Yi Wu ,  Sihan Lin ,  Ding Wang

发明人： Gan Zhou ,  Kuang-Yi Wu ,  Sihan Lin ,  Ding Wang

IPC分类号： G02B530

CPC分类号： G02B6/29302 ,  G02B6/2713 ,  G02B6/272 ,  G02B6/2766 ,  G02B6/2773 ,  G02B6/29358 ,  G02B6/29386 ,  G02B6/29395 ,  G02F1/31 ,  H04J14/02 ,  H04J14/0212 ,  H04J14/06 ,  H04Q11/0003 ,  H04Q11/0005 ,  H04Q2011/0026 ,  H04Q2011/0032 ,  H04Q2011/0035 ,  Y10S359/90

摘要： An optical wavelength router separates even and odd optical channels from an input WDM signal. The input beam is first converted into a pair of orthogonally-polarized beams. One of the beams is reflected by a mirror, while the other is reflected by a Fabry-Perot resonator (or etalon). The group delay of the reflected beams is strongly dependent on wavelength. The beams reflected from the resonator and mirror are combined and interfere in a birefringent element (e.g., a beam displacer or polarized beamsplitter) to produce a beam having mixed polarization as a function of wavelength. The polarized components of this beam are separated by a polarization-dependent routing element to produce two output beams containing complementary subsets of the input optical spectrum (e.g., even optical channels are routed to output port A and odd optical channels are routed to output port B).

摘要翻译： 光波长路由器将偶数和奇数光通道与输入WDM信号分开。 输入光束首先转换为一对正交偏振光束。 一个光束被镜子反射，而另一个由法布里 - 珀罗谐振器（或标准具）反射。 反射光束的群延迟很大程度上取决于波长。 从谐振器和反射镜反射的光束被组合并且干涉双折射元件（例如，光束置换器或偏振分束器），以产生具有作为波长的函数的混合偏振的光束。 该光束的极化分量由偏振相关的路由元件分离，以产生包含输入光谱的互补子集的两个输出光束（例如，甚至光信道被路由到输出端口A，并且奇数光信道被路由到输出端口B ）。

公开(公告)号：US06455841B2

公开(公告)日：2002-09-24

申请号：US09874641

申请日：2001-06-05

申请人： Gan Zhou ,  Kuang-Yi Wu

发明人： Gan Zhou ,  Kuang-Yi Wu

IPC分类号： G02F101

CPC分类号： H04J14/06 ,  G02B6/29302 ,  G02B6/29386 ,  H04J14/02 ,  Y10S359/90

摘要： A method and apparatus for optical wavelength routing separates even and odd optical channels from an input WDM signal. The input beam is first converted to at least one pair of orthogonally-polarized beams. A split-mirror resonator has a front mirror with two regions having different reflectivities, and a reflective back mirror spaced a predetermined distance behind the front mirror. Each of the orthogonally-polarized beams is incident on a corresponding region of the front mirror of the split-mirror resonator. A portion of each beam is reflected by the front mirror, which the remainder of each beam enters the resonator cavity where it is reflected by the back mirror back through the front mirror. The group delay of each reflected beam is strongly dependent on wavelength. The two reflected beams from the resonator are combined and interfere in a birefringent element (e.g., a beam displacer or waveplates) to produce a beam having mixed polarization as a function of wavelength. The polarized components of this beam are separated by a polarization-dependent routing element (e.g., a polarized beamsplitter) to produce two output beams containing complimentary subsets of the input optical spectrum (e.g., even optical channels are routed to output port A and odd optical channels are routed to output port B).

摘要翻译： 用于光波长路由的方法和装置将偶数和奇数光信道与输入WDM信号分开。 输入光束首先被转换成至少一对正交偏振光束。 分裂镜谐振器具有前反射镜，具有不同反射率的两个区域，以及在前反射镜后面隔开预定距离的反射后视镜。 每个正交偏振光束入射在分裂镜谐振器的前反射镜的相应区域上。 每个光束的一部分被前反射镜反射，每个光束的其余部分进入谐振腔，在其中反射镜通过前反射镜反射回来。 每个反射光束的群延迟强烈依赖于波长。 来自谐振器的两个反射光束被组合并且干涉双折射元件（例如，光束置换器或波片），以产生具有作为波长的函数的混合极化的光束。 该光束的极化分量由偏振相关的路由元件（例如，偏振分束器）分离，以产生包含输入光谱的互补子集的两个输出光束（例如，甚至光信道被路由到输出端口A和奇数光学 通道路由到输出端口B）。