公开(公告)号：US07567756B2

公开(公告)日：2009-07-28

申请号：US11197934

申请日：2005-08-03

Applicant: Brian P. Tremaine

Inventor： Brian P. Tremaine

IPC: H04J14/00

CPC classification number: H04Q11/0005 ,  G02B6/3512 ,  G02B6/3546 ,  G02B6/356 ,  G02B6/3588 ,  G02B6/3594 ,  H04Q2011/0049

Abstract: Methods for adjusting dither amplitude for MEMS mirrors in optical switches and optical switches employing such a method are disclosed. A dither amplitude of one or more MEMS mirrors may be adjusted in an optical switch having an input port, and an array of one or more MEMS mirrors that can be selectively optically coupled to one or more of N≧3 optical input/output (I/O) ports. The MEMS mirrors are aligned mirrors to achieve nominal peak coupling at each of the N collimators. Digital-to-analog (DAC) settings for positioning mirrors in an open control loop as a function of the selected collimator are stored to a non-volatile memory. The DAC settings are used to determine a dither amplitude DITHER(x) for one of the MEMS mirrors positioned to couple optical signals to an output port at a position x. The optical switch apparatus may comprise N≧3 optical input/output (I/O) ports, an array of one or more MEMS mirrors that can selectively reflect one or more spectral channels to one or more of the N ports, and a servo-control assembly in communication with said one or more of the MEMS mirrors. The servo control assembly includes memory containing digital-to-analog converter (DAC) settings for positioning each mirror in an open control loop as a function of a port position x. The servo control assembly is programmed to adjust dither amplitude of one or more of the MEMS mirrors using the stored DAC settings.

Abstract translation: 公开了采用这种方法的用于调整光开关中的MEMS反射镜的抖动振幅的方法和使用这种方法的光开关。 可以在具有输入端口的光学开关中调整一个或多个MEMS反射镜的抖动振幅，以及一个或多个MEMS反射镜的阵列，其可以选择性地光学耦合到N≥3个光学输入/输出中的一个或多个 I / O）端口。 MEMS反射镜是对齐的反射镜，以在N个准直仪的每一个处实现标称峰值耦合。 作为所选择的准直仪的函数，将开放控制回路中的定位镜的数模转换（DAC）设置存储到非易失性存储器。 DAC设置用于确定用于将光信号耦合到位置x处的输出端口的MEMS镜之一的抖动幅度DITHER（x）。 光开关装置可以包括N≥3个光输入/输出（I / O）端口，可以选择性地将一个或多个频谱信道反射到N个端口中的一个或多个的一个或多个MEMS反射镜的阵列，以及伺服 控制组件与所述一个或多个MEMS反射镜连通。 伺服控制组件包括存储器，该存储器包含数字 - 模拟转换器（DAC）设置，用于将开启的控制回路中的每个反射镜定位为端口位置x的函数。 伺服控制组件被编程为使用存储的DAC设置来调整一个或多个MEMS反射镜的抖动振幅。

公开(公告)号：US06961506B2

公开(公告)日：2005-11-01

申请号：US10221867

申请日：2001-03-16

Applicant: Armand P. Neukermans ,  Rajiv Ramaswami ,  John F. Heanue ,  Brian P. Tremaine ,  Marc Schuman

Inventor： Armand P. Neukermans ,  Rajiv Ramaswami ,  John F. Heanue ,  Brian P. Tremaine ,  Marc Schuman

IPC: G02B6/26 ,  G02B6/35 ,  G02B26/08 ,  G02B6/00 ,  G02B26/02

CPC classification number: G02B6/359 ,  G02B6/266 ,  G02B6/352 ,  G02B6/3556 ,  G02B6/356 ,  G02B6/357 ,  G02B6/3588 ,  G02B6/3594

Abstract: One aspect is a method for controllably attenuating the beam of light (108) coupled between incoming and outgoing optical fibers (106) by misaligning minor surfaces (116a, 116b) included of an optical switching module (100). Misalignment of the mirror surfaces (116a and 116b) causes only a portion of the beam of light (108) propagating along the incoming optical fiber (106), which is less than when the light beam deflectors' mirror surfaces (116) are precisely aligned, to propagate along the outgoing optical fiber (108). Thus, the optical switching module (100) controllably attenuates the beam of light (108) coupled between the incoming and the outgoing optical fibers (106). Another aspect is a variable-optical-attenuator (“VOA”) (212) that includes an optically reflective membrane (222) upon which the beam of light (108) impinges. Application of an electrostatic field between an adjacent electrode (228) and the membrane (222) deforms the membrane (222) thereby attenuating an impinging beam of light (108).

Abstract translation: 一个方面是通过使包括光开关模块（100）的小面（116a，116b）不对准来可控地衰减耦合在进入和输出光纤（106）之间的光束（108）的方法。 镜面（116a和116b）的不对准仅使得沿着入射光纤（106）传播的光束（108）的一部分小于当光束偏转器的镜面（116）为 精确对准，以沿着输出光纤（108）传播。 因此，光学开关模块（100）可控制地衰减耦合在输入和输出光纤（106）之间的光束（108）。 另一方面是可变光衰减器（“VOA”）（212），其包括光束（108）撞击在其上的光学反射膜。 相邻电极（228）和膜（222）之间的静电场的施加使膜（222）变形，从而衰减入射光束（108）。

公开(公告)号：US06420692B1

公开(公告)日：2002-07-16

申请号：US09440312

申请日：1999-11-12

Applicant: Alan C. Burroughs ,  Brian P. Tremaine

Inventor： Alan C. Burroughs ,  Brian P. Tremaine

IPC: H01L3100

CPC classification number: G11B11/10543 ,  G11B7/122 ,  G11B7/133 ,  H01L31/02024

Abstract: An optical position detector which has adjacent detector cells connected to each other in a zig-zag pattern offers a wider dynamic range than a detector with a vertical separation line during transition between a read laser power and a write laser power. This allows use of a fast response bi-cell in place of a slower position sensing device (PSD). The optical position detector has detector cells coupled to each other in a zig-zag pattern. Each detector cell produces a signal when a light beam is focused onto the cell to indicate a location of the light beam relative to the cell.

Abstract translation: 具有以锯齿形图案彼此连接的相邻检测器单元的光学位置检测器在读取激光功率和写入激光功率之间的转换期间提供比具有垂直分离线的检测器更宽的动态范围。 这允许使用快速响应双电池来代替较慢的位置感测装置（PSD）。 光学位置检测器具有以锯齿形图案彼此耦合的检测器单元。 当光束聚焦到单元上以指示光束相对于单元的位置时，每个检测器单元产生信号。

公开(公告)号：US5668680A

公开(公告)日：1997-09-16

申请号：US608019

申请日：1996-03-04

Applicant: Brian P. Tremaine

Inventor： Brian P. Tremaine

IPC: G11B5/55 ,  G11B5/596

CPC classification number: G11B5/5547

Abstract: A method for optimizing the demand velocities in a disc drive velocity profile using both time and vibro-acoustic constraints. An accurate, high-order dynamic model of the disc drive is formulated which describes the vibro-acoustic output of the drive in response to actuator coil current input, taking into account the disc drive actuator structure and the electrical response of the disc drive servo circuit. From this dynamic model, the shortest possible seek time is determined for a selected seek length which can achieve a vibro-acoustic output below a selected, maximum limit, as well as settling within a specified tolerance of the target track. Once the shortest possible seek time is determined, the demand velocity values in the velocity profile are selected so as to minimize the maximum position error during the seek settle. The demand velocity values are subsequently provided in a look up table for use during a seek by the disc drive servo circuit.

Abstract translation: 一种使用时间和振动声学约束优化磁盘驱动器速度分布中的需求速度的方法。 制定了磁盘驱动器的精确的高阶动态模型，其描述响应于致动器线圈电流输入的驱动器的振动声输出，考虑到盘驱动致动器结构和盘驱动器伺服电路的电响应 。 从该动态模型中，针对所选择的寻道长度确定最短的寻道时间，该寻找长度可以实现低于所选择的最大极限的振动声输出，以及在目标轨道的指定公差范围内稳定。 一旦确定了最短的寻道时间，则选择速度分布中的需求速度值，以便最小化搜索期间的最大位置误差。 随后在查询表中提供需求速度值，以便在盘驱动器伺服电路的寻找期间使用。

公开(公告)号：US4739239A

公开(公告)日：1988-04-19

申请号：US91764

申请日：1987-08-03

Applicant: James N. Krause ,  Brian P. Tremaine

Inventor： James N. Krause ,  Brian P. Tremaine

IPC: G11B5/55 ,  G05B19/40

CPC classification number: G11B5/553

Abstract: A disc drive system is disclosed including a data storage disc having a plurality of data storage tracks. Each track has a centerline, the centerlines of adjacent tracks being spaced by a fixed track space distance. The disc surface also includes wedge servo sectors; servo data in each sector includes first servo information stored at a position on one side of said data track centerline and one-half said track space distance from said centerline, and second servo information stored at the other side of said data track centerline and one-half of said track space distance from said centerline. Positionable accessing is provided for reading the servo data and for generating servo signals representing the first and second servo burst information, to positioning said transducer accurately. The stepper motor has a plurality of stator coils subject to selective simultaneous energization at nominal current with currents of selected polarities of all or all but one of said coils for defining a plurality of motor detent positions. The servo information is located at positions defined by said motor detent positions. The data track is reached by the transducer by applying approximately one-half of said energization current to the one non-energized coil to reach said motor detent servo track position, the motor detent position on the other side of said track centerline being reached by energization of all the coils with currents of selected polarities.

Abstract translation: 公开了一种包括具有多个数据存储轨道的数据存储盘的盘驱动器系统。 每个轨道具有中心线，相邻轨道的中心线间隔固定的轨道空间距离。 盘表面还包括楔形伺服扇区; 每个扇区中的伺服数据包括存储在所述数据轨道中心线的一侧的位置上的第一伺服信息和与所述中心线的所述轨迹距离的一半，以及存储在所述数据轨道中心线另一侧的第二伺服信息， 所述轨道距离所述中心线的距离的一半。 为了读取伺服数据和产生表示第一和第二伺服脉冲串信息的伺服信号，定位访问是为了准确地定位所述换能器。 步进电动机具有多个定子线圈，其在额定电流下进行选择性同时通电，其中所有或所有线圈中的所有或所有线圈的选定极性的电流用于限定多个电动机定位位置。 伺服信息位于由所述电动机定位位置限定的位置。 通过将大约一半的所述通电电流施加到一个无通电线圈以达到所述电动机定位伺服磁道位置，所述传感器达到数据磁道，所述轨道中心线的另一侧的电动机定位位置由通电达到 具有所选极性电流的所有线圈。

公开(公告)号：US07346234B2

公开(公告)日：2008-03-18

申请号：US11317450

申请日：2005-12-22

Applicant: Joseph E. Davis ,  Brian P. Tremaine

Inventor： Joseph E. Davis ,  Brian P. Tremaine

IPC: G02B6/42

CPC classification number: G02B6/352 ,  G02B6/29311 ,  G02B6/29383 ,  G02B6/356 ,  G02B6/3588 ,  G02B6/3594 ,  G02B6/4215 ,  G02B26/0833 ,  G02B27/095

Abstract: Effects of diffraction of a spectral beam from an edge of the micromirrors are reduced in order to optimize the passband in a wavelength selective switch. The effects of diffraction on the pass band may be reduced by using rotation of the micromirror about both the attenuation axis and the switching axis to achieve the desired level of attenuation. Peak coupling can be attained by dithering the micromirror about an axis tangent to a contour of constant attenuation using simultaneous rotation about the switching and attenuation axes.

Abstract translation: 降低了来自微镜边缘的光束的衍射效应，以便优化波长选择开关中的通带。 衍射对通带的影响可以通过使用微镜绕衰减轴和切换轴两者的旋转来减小，以达到期望的衰减水平。 通过使用围绕开关和衰减轴的同时旋转，可以使微镜围绕与恒定衰减轮廓相切的轴线抖动微镜来实现峰值耦合。

公开(公告)号：US06909819B1

公开(公告)日：2005-06-21

申请号：US10825897

申请日：2004-04-16

Applicant: Brian P. Tremaine ,  Joseph E. Davis

Inventor： Brian P. Tremaine ,  Joseph E. Davis

IPC: G02B6/26 ,  G02B6/35 ,  G02B6/42 ,  G02B26/08

CPC classification number: G02B6/3586 ,  G02B6/3512 ,  G02B6/356 ,  G02B6/3588 ,  G02B6/359 ,  G02B26/0833

Abstract: A system and method for canceling disturbance in a MEMS device. The system 200 includes a MEMS device 203, which may include a substrate 205 and a plurality of individually movable MEMS elements 203-1 through 203-N, and a control assembly 207. The optical system 200 may be utilized in and/or form a portion of any optical apparatus employing an array of MEMS devices. The control assembly 207 uses feed-forward control signals to cancel disturbance in the MEMS device 203, and more particularly, to cancel disturbance in the non-switched or static mirrors of the MEMS device 203 caused by switched or moving mirrors.

Abstract translation: 一种用于消除MEMS器件中的干扰的系统和方法。 系统200包括MEMS器件203，其可以包括衬底205和多个可单独移动的MEMS元件203-1-2203-N以及控制组件207。 光学系统200可以用于采用MEMS器件阵列的任何光学装置的一部分和/或形成其一部分。 控制组件207使用前馈控制信号来消除MEMS器件203中的干扰，更具体地，消除由开关或移动的反射镜引起的MEMS器件203的非开关或静态反射镜中的干扰。

公开(公告)号：US06724694B2

公开(公告)日：2004-04-20

申请号：US10173495

申请日：2002-06-14

Applicant: Gordon R. Knight ,  John Al-Samarrie ,  David Blankenbeckler ,  Brian Bonn ,  Alan Burroughs ,  Warren Dalziel ,  Roger Hajjar ,  Amit Jain ,  Guolin Ma ,  Brian P. Tremaine

Inventor： Gordon R. Knight ,  John Al-Samarrie ,  David Blankenbeckler ,  Brian Bonn ,  Alan Burroughs ,  Warren Dalziel ,  Roger Hajjar ,  Amit Jain ,  Guolin Ma ,  Brian P. Tremaine

IPC: G11B1100

CPC classification number: G11B13/045 ,  G11B7/08564 ,  G11B7/08576 ,  G11B7/08582 ,  G11B7/122 ,  G11B7/1359 ,  G11B7/1362 ,  G11B7/1365 ,  G11B7/1372 ,  G11B7/1374 ,  G11B7/1387 ,  G11B7/14 ,  G11B7/22 ,  G11B7/24 ,  G11B11/10532 ,  G11B11/10534 ,  G11B11/10543 ,  G11B11/10554 ,  G11B11/1058 ,  G11B11/10584 ,  G11B11/10586 ,  G11B23/0308 ,  G11B23/0316 ,  G11B23/505 ,  G11B33/0416 ,  G11B33/14 ,  G11B2005/0021 ,  G11B2007/0013 ,  G11B2007/13727

Abstract: Structures of storage media for optical storage systems, especially for systems in the near-field configuration to couple radiation between the optical head and the media at least in part by evanescent fields.

Abstract translation: 用于光学存储系统的存储介质的结构，特别是用于近场配置的系统，用于至少部分地通过渐近场耦合光头和介质之间的辐射。

公开(公告)号：US5079653A

公开(公告)日：1992-01-07

申请号：US226150

申请日：1988-07-29

Applicant: Raymond G. Gauthier ,  Brian P. Tremaine ,  James N. Krause ,  Litko R. Chan

Inventor： Raymond G. Gauthier ,  Brian P. Tremaine ,  James N. Krause ,  Litko R. Chan

IPC: G11B21/08 ,  G11B5/55 ,  G11B21/10

CPC classification number: G11B5/5547

Abstract: The output of the ring detector is used to change or control the timing of specially generated torque damping pulses which are fed to the stepper motor at the end of a SEEK step sequence. These torque damping pulses are step pulses, the timing, amplitude and/or duration of which applies either a positive or negative torque to the stepper motor relative to the target track based on the "energy" that has to be dissipated to settle the read/write head over the desired track. The energy is measured indirectly by monitoring the back emf voltage of an open winding or unenergized phase of the motor, and developing an indication of how fast the read/write head is going through the desired track center or target track point. By bringing an additional signal out of the ring detector, the direction in which the read/write head has crossed the track can also be defined. Based on how fast the read/write head is going and in which direction, the microprocessor accesses a look-up table for selecting the timing, amplitude and/or duration of the damping pulse.

公开(公告)号：US07362930B2

公开(公告)日：2008-04-22

申请号：US11469394

申请日：2006-08-31

Applicant: Joseph E. Davis ,  Brian P. Tremaine

Inventor： Joseph E. Davis ,  Brian P. Tremaine

IPC: G02B6/42

CPC classification number: G02B6/3588 ,  G02B6/266 ,  G02B6/2931 ,  G02B6/29311 ,  G02B6/29313 ,  G02B6/29383 ,  G02B6/3512 ,  G02B6/352 ,  G02B6/356 ,  G02B6/3586 ,  G02B6/3594 ,  G02B6/4215 ,  G02B6/4246 ,  G02B26/0833 ,  G02B27/095

Abstract: Effects of diffraction of a spectral beam from an edge of the micromirrors are reduced in order to optimize the passband in a wavelength selective switch. The effects of diffraction on the pass band may be reduced by using rotation of the micromirror about both the attenuation axis and the switching axis to achieve the desired level of attenuation. Peak coupling can be attained by dithering the micromirror about a dither axis that is tangent to a contour of constant attenuation using simultaneous rotation about the switching and attenuation axes. A power level of a spectral channel may be attenuated by rotating the channel micromirror with respect to an effective attenuation axis that is non-orthogonal to the dither axis through a combination of rotations about the switching axis and the attenuation axis.

Abstract translation: 降低了来自微镜边缘的光束的衍射效应，以便优化波长选择开关中的通带。 衍射对通带的影响可以通过使用微镜绕衰减轴和切换轴两者的旋转来减小，以达到期望的衰减水平。 峰值耦合可以通过使用围绕开关和衰减轴的同时旋转使微镜围绕恒定衰减轮廓相切的抖动轴进行抖动来实现。 频谱通道的功率电平可以通过相对于通过关于切换轴和衰减轴的旋转的组合与抖动轴非正交的有效衰减轴旋转通道微镜而被衰减。