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）。

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：US07810395B2

公开(公告)日：2010-10-12

申请号：US11927889

申请日：2007-10-30

申请人： Gan Zhou

发明人： Gan Zhou

IPC分类号： G01L11/00

CPC分类号： G01H9/004

摘要： An ultrasonic pressure sensor and a method of detecting ultrasonic pressure. In one embodiment, the ultrasonic pressure sensor includes: (1) an interferometer having a reference arm and a signal arm that includes a probing fiber, the probing fiber having a reflective coating at a distal end thereof and configured to couple to ultrasonic waves proximate the distal end, the interferometer configured to receive laser light and produce two output beams based on the ultrasonic waves and (2) a photodetector coupled to the interferometer and configured to generate electronic signals based on the two output beams.

摘要翻译： 超声波压力传感器和超声波检测方法。 在一个实施例中，超声波压力传感器包括：（1）具有参考臂和包括探测光纤的信号臂的干涉仪，探测光纤在其远端处具有反射涂层并且被配置为耦合到邻近的超声波 远端，所述干涉仪被配置为接收激光并基于所述超声波产生两个输出光束;以及（2）耦合到所述干涉仪并被配置为基于所述两个输出光束产生电子信号的光电检测器。

公开(公告)号：US20080108867A1

公开(公告)日：2008-05-08

申请号：US11739301

申请日：2007-04-24

申请人： Gan Zhou

发明人： Gan Zhou

IPC分类号： A61B1/00 ,  A61B18/18 ,  A61N1/00

CPC分类号： A61B8/4488 ,  A61B5/02007 ,  A61B8/12 ,  A61B8/4483 ,  A61B18/245 ,  A61B2018/00577 ,  A61B2018/2272 ,  A61B2090/3784 ,  G01S15/8965 ,  G10K15/046

摘要： Devices (i.e., catheters and guidewires) for, and methods of, ultrasonic imaging and ablation. In one embodiment, a device includes: (1) a fiber-optic bundle configured to carry laser light for ultrasonic imaging, each fiber of the fiber-optic bundle having a reflective layer oriented at an acute angle with respect thereto at a distal end thereof, (2) an elongated member associated with the fiber-optic bundle and configured to carry energy for ablation, the energy for ablation projecting past the distal end and (3) a photoacoustic layer associated with the each fiber of the fiber-optic bundle and configured to receive at least some of the laser light for the ultrasonic imaging and generate ultrasonic pressure waves in response thereto.

摘要翻译： 用于超声成像和消融的装置（即，导管和导线）和方法。 在一个实施例中，一种设备包括：（1）被配置为携带用于超声成像的激光的光纤束，所述光纤束的每个光纤具有在其远端处相对于其锐角定向的反射层 （2）与光纤束相关联并被配置为携带用于消融的能量的细长构件，用于消融的能量穿过远端延伸，以及（3）与光纤束的每个光纤相关联的光声层，以及 被配置为接收用于超声成像的至少一些激光，并且响应于此产生超声波压力波。

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：US20050025410A1

公开(公告)日：2005-02-03

申请号：US10170245

申请日：2002-06-11

申请人： Gan Zhou ,  Sihan Lin

发明人： Gan Zhou ,  Sihan Lin

IPC分类号： G02B6/34 ,  H04J14/02 ,  H04J14/06 ,  G02B6/26 ,  G02B6/42

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 includes a beamsplitter, a first resonator, and a second resonator. The beamsplitter separates an input signal into a first beam and a second beam. The first resonator reflects the first beam and has a partially reflective front surface and a highly reflective back surface spaced a first optical thickness from the front surface. The second resonator reflects the second beam and has a partially reflective front surface and a highly reflective back surface spaced a second optical thickness from the front surface. The difference between the optical thicknesses of the first and second resonators is approximately equal to one-eighth wavelength.

摘要翻译： 光波长路由器包括分束器，第一谐振器和第二谐振器。 分束器将输入信号分离成第一光束和第二光束。 第一谐振器反射第一光束并且具有部分反射的前表面和与前表面间隔开第一光学厚度的高度反射的后表面。 第二谐振器反射第二光束并且具有与前表面间隔开第二光学厚度的部分反射前表面和高反射性背表面。 第一和第二谐振器的光学厚度之差大致等于八分之一波长。