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    Continuously variable attenuation of an optical signal using an optical isolator
    1.
    发明授权
    Continuously variable attenuation of an optical signal using an optical isolator 有权
    使用光隔离器对光信号进行连续可变的衰减

    公开(公告)号：US07050694B2

    公开(公告)日：2006-05-23

    申请号：US10426453

    申请日：2003-04-29

    申请人： Todd L. Gustavson ,  Konstantinos G. Haritos ,  Subra Nagarajan ,  Ramesh Sundaram

    发明人： Todd L. Gustavson ,  Konstantinos G. Haritos ,  Subra Nagarajan ,  Ramesh Sundaram

    IPC分类号： G02B6/00

    CPC分类号： G02B6/2746 ,  A61K51/1072 ,  A61K51/1093 ,  G02B6/266

    摘要： Method and apparatus of attenuating an optical signal without adding extra components is presented. The drive current of the optical signal source is set to meet a predetermined bandwidth requirement and exceed a predetermined amplitude requirement. An optical isolator that is used to prevent back-reflections from reaching the optical signal source is used to achieve the desired amount of attenuation. More specifically, the invention includes controlling the attenuation by tuning an angle θ between the transmission axis of a polarizer that is part of the optical isolator and the original polarization state of the optical signal. By increasing the angle θ, the amount of attenuation is increased; by decreasing the angle θ, the amount of attenuation is decreased. The invention allows continuous tuning of the angle θ.

    摘要翻译： 提出了在不增加额外分量的情况下衰减光信号的方法和装置。 光信号源的驱动电流被设定为满足预定的带宽要求并超过预定的幅度要求。 用于防止反向反射到达光信号源的光隔离器用于实现所需的衰减量。 更具体地，本发明包括通过调谐作为光隔离器的一部分的偏振器的透射轴与光信号的原始极化状态之间的角度θ来控制衰减。 通过增加角度θ，增加衰减量; 通过减小角度θ，减少衰减量。 本发明允许角度θ的连续调谐。

    Counterbore base member for ferrule-type optical connector
    3.
    发明授权
    Counterbore base member for ferrule-type optical connector 有权
    套圈型光连接器的沉孔基座部件

    公开(公告)号：US07396165B2

    公开(公告)日：2008-07-08

    申请号：US10697733

    申请日：2003-10-30

    申请人： Jignesh Shah ,  Subra Nagarajan ,  Ramesh Sundaram

    发明人： Jignesh Shah ,  Subra Nagarajan ,  Ramesh Sundaram

    IPC分类号： G02B6/36

    CPC分类号： G02B6/381

    摘要： An optical connector includes a base member having a first hollow bore extending from a first end toward a second end, and a recess coaxially aligned with the first hollow bore. The recess has a first internal perimeter and a second internal perimeter. The first perimeter is smaller than said second perimeter. The base member can have a post extending up from a bottom of the recess. The first hollow bore passes through the past and terminates at an end of the post. The post can have an end that terminates substantially in alignment with at least a portion of a termination region disposed between the first internal perimeter and the second internal perimeter.

    摘要翻译： 光学连接器包括具有从第一端向第二端延伸的第一中空孔的底座构件以及与第一中空孔同轴对准的凹部。 凹槽具有第一内周边和第二内周边。 第一周边小于所述第二周边。 基部构件可具有从凹部的底部向上延伸的柱。 第一个空心孔穿过过去，终止于柱的末端。 该柱可以具有终止件，其基本上与设置在第一内周边和第二内周边之间的端接区域的至少一部分对准。

    Method and apparatus for reducing reflectance in an optical mount using a glass spacer
    5.
    发明授权
    Method and apparatus for reducing reflectance in an optical mount using a glass spacer 有权
    使用玻璃间隔物降低光学座架中的反射率的方法和装置

    公开(公告)号：US07178995B2

    公开(公告)日：2007-02-20

    申请号：US10429899

    申请日：2003-05-05

    申请人： Lew Aronson ,  Jignesh Shah ,  Paul Rosenberg ,  Ramesh Sundaram

    发明人： Lew Aronson ,  Jignesh Shah ,  Paul Rosenberg ,  Ramesh Sundaram

    IPC分类号： G02B6/36

    CPC分类号： G02B6/4207 ,  G02B6/421 ,  G02B6/4292

    摘要： Embodiments of the invention generally provide an optical component configured to minimize reflectance. The component generally includes an optical housing having a bore formed therethrough, the bore having a central component receiving portion, and a glass block positioned in the component receiving portion in abutment with a fiber receiving bore. The component further includes a fuzzy mount secured in the central component receiving portion, the fuzzy mount being secured via a plurality of extending teeth formed on an outer surface thereof, the teeth being configured to engage an inner surface of the central component receiving portion to secure the fuzzy mount therein.

    摘要翻译： 本发明的实施例通常提供一种配置成使反射率最小化的光学部件。 该部件通常包括具有穿过其中形成的孔的光学壳体，所述孔具有中心部件接收部分，以及位于与光纤接收孔邻接的部件接收部分中的玻璃块。 所述部件还包括固定在所述中央部件接收部分中的模糊安装座，所述模糊安装座通过形成在其外表面上的多个延伸齿固定，所述齿构造成与所述中央部件接收部分的内表面接合以固定 其中的模糊安装。

    Recognizing and compensating for disk shift in computer disk drives
    6.
    发明授权
    Recognizing and compensating for disk shift in computer disk drives 失效
    识别和补偿计算机磁盘驱动器中的磁盘移位

    公开(公告)号：US06301797B1

    公开(公告)日：2001-10-16

    申请号：US09325887

    申请日：1999-06-04

    申请人： Ramesh Sundaram ,  Wei Yao ,  Li-Ping Wang ,  David Shiao-Min Kuo

    发明人： Ramesh Sundaram ,  Wei Yao ,  Li-Ping Wang ,  David Shiao-Min Kuo

    IPC分类号： B65G4722

    CPC分类号： G11B5/012 ,  G11B5/5582 ,  G11B17/038 ,  G11B19/04 ,  G11B33/08 ,  G11B33/10 ,  Y10S414/135

    摘要： A method and apparatus for data disks adapted to compensate for effects of shock loads imparted to a disk drive which are of sufficient magnitude to cause disk shifts. A series of topographical features are formed on the disk surface or edge to cause signal fluctuation in a sensor during read-back mode operation. An initial signal profile is stored as a map indicative of track or disk alignment with respect to the actuator assembly. Selectively, such as after a known shock event, the topographical features are re-profiled. A comparison of the profiles provides a measure of any track distortion which must be compensated for in future read-write operations by adjustments to data track servo follower algorithms.

    摘要翻译： 一种用于数据盘的方法和装置，适用于补偿赋予磁盘驱动器的冲击载荷的影响，磁盘驱动器具有足够大的幅度以引起磁盘移位。 在磁盘表面或边缘上形成一系列地形特征，以在回读模式操作期间引起传感器中的信号波动。 初始信号轮廓被存储为指示相对于致动器组件的轨道或盘对准的映射。 选择性地，例如在已知的冲击事件之后，地形特征被重新分类。 配置文件的比较可以提供任何跟踪失真的量度，通过调整数据轨道伺服跟随器算法，必须在将来的读写操作中对其进行补偿。

    Glide head for testing a disc surface
    8.
    发明授权
    Glide head for testing a disc surface 失效
    滑动头用于测试光盘表面

    公开(公告)号：US6003364A

    公开(公告)日：1999-12-21

    申请号：US145681

    申请日：1998-09-02

    申请人： Wei Hsin Yao ,  Ramesh Sundaram

    发明人： Wei Hsin Yao ,  Ramesh Sundaram

    IPC分类号： G01B13/22 ,  G11B5/84 ,  G11B23/00 ,  G11B33/10

    CPC分类号： G01B13/22 ,  G11B23/0028 ,  G11B5/84 ,  G11B5/8408 ,  G11B33/10

    摘要： An improved glide head is useful for testing the glide quality of a disc. The glide head includes an air bearing surface, pads extending from the air bearing surface and a contact sensor, the contact sensor providing an output in response to an impact on the pad. The air-bearing surface defines a resting plane. The pad protrudes from the air-bearing surface such that the pad projects below the resting plane of the air-bearing surface.

    摘要翻译： 改进的滑行头可用于测试光盘的滑动质量。 滑行头包括空气轴承表面，从空气轴承表面延伸的焊盘和接触传感器，接触传感器响应于对焊盘的冲击而提供输出。 空气轴承表面限定了一个静止平面。 垫从空气轴承表面突出，使得垫突出到空气轴承表面的静止平面下方。

    Insertable EMI shield clip for use in optical transceiver modules
    9.
    发明授权
    Insertable EMI shield clip for use in optical transceiver modules 有权
    用于光收发模块的可插入EMI屏蔽夹

    公开(公告)号：US07978974B2

    公开(公告)日：2011-07-12

    申请号：US11860195

    申请日：2007-09-24

    申请人： Chris K. Togami ,  Ramesh Sundaram ,  Hermando Esguerra

    发明人： Chris K. Togami ,  Ramesh Sundaram ,  Hermando Esguerra

    IPC分类号： H04K3/00

    CPC分类号： H05K9/0058 ,  H04B10/40

    摘要： The embodiments disclosed herein relate an insertable shield clip for use in controlling electromagnetic interference in an optical transceiver module. The optical transceiver module may include a shell that houses first and second optical subassemblies and an enclosure that cooperates with the shell in defining a covering for the optical transceiver module. The shield clip may comprise a body composed of conductive material. The body may include first and second vertical side members. The body may also include first and second shield members that are each configured to receive a corresponding nosepiece of one of the first and second optical subassemblies. The body may further include a bottom member that interconnects the first and second vertical side members and the first and second shield members.

    摘要翻译： 本文公开的实施例涉及用于控制光收发器模块中的电磁干扰的可插入屏蔽夹。 光收发器模块可以包括容纳第一和第二光学子组件的外壳以及与壳体配合以限定光收发器模块的覆盖物的外壳。 屏蔽夹可以包括由导电材料组成的主体。 主体可以包括第一和第二垂直侧构件。 主体还可以包括第一和第二屏蔽构件，每个屏蔽构件被配置为接收第一和第二光学子组件之一的对应的鼻梁。 主体还可以包括使第一和第二垂直侧构件以及第一和第二屏蔽构件相互连接的底部构件。

    Glide head with features on its air bearing surface for improved fly height measurement
    10.
    发明授权
    Glide head with features on its air bearing surface for improved fly height measurement 有权
    滑动头，其空气轴承表面具有特征，可改善飞行高度测量

    公开(公告)号：US06369900B1

    公开(公告)日：2002-04-09

    申请号：US09211217

    申请日：1998-12-14

    申请人： Ramesh Sundaram ,  Wei H. Yao

    发明人： Ramesh Sundaram ,  Wei H. Yao

    IPC分类号： G01B1114

    CPC分类号： G01B11/14 ,  G11B5/6005 ,  G11B7/122 ,  G11B11/1058 ,  G11B33/10

    摘要： An improved glide head has optical marks on the air bearing surface. The glide heads can be used for detecting defects on disc surfaces following an evaluation of the fly height as a function of disc rotation. The optical marks provide a position for focusing light used in the optical measurement of fly height. The optical marks have measurably different optical properties from the portions of the air bearing surface not covered by an optical mark. The differences in optical properties of the optical marks can be used to adjust the position of the optical system relative to the glide head to ensure that the light is focused on an optical mark.

    摘要翻译： 改进的滑行头在空气轴承表面上具有光学标记。 在评估飞行高度作为盘旋转的函数之后，滑动头可用于检测盘表面上的缺陷。 光学标记提供了用于聚焦在飞行高度的光学测量中使用的光的位置。 光学标记与未被光学标记覆盖的空气轴承表面的部分具有可测量的不同的光学特性。 可以使用光学标记的光学特性的差异来调整光学系统相对于滑动头的位置，以确保光聚焦在光学标记上。