公开(公告)号：US08456963B1

公开(公告)日：2013-06-04

申请号：US12758319

申请日：2010-04-12

Applicant: Yufeng Hu ,  Ruolin Li ,  Ut Tran ,  Jinshan Li

Inventor： Yufeng Hu ,  Ruolin Li ,  Ut Tran ,  Jinshan Li

IPC: G11B11/00

CPC classification number: G11B5/314 ,  G11B5/4866 ,  G11B5/6088 ,  G11B2005/0021

Abstract: An energy assisted magnetic recording (EAMR) disk drive comprises a suspension and a slider having a back side, a laser-facing surface, and an air-bearing surface (ABS) opposite the back side. The slider is mounted to the suspension on the back side. The disk drive further comprises an EAMR transducer coupled with the slider, a portion of the EAMR transducer residing in proximity to the ABS and on the laser-facing surface of the slider. The disk drive further comprises a laser coupled with the suspension and having a light emitting surface facing the laser-facing surface of the slider. The laser has an optic axis substantially parallel to the suspension. The laser provides energy substantially along the optic axis and is optically coupled with the EAMR transducer via free space. The EAMR transducer receives the energy from the laser and writes to the media using the energy.

Abstract translation: 能量辅助磁记录（EAMR）盘驱动器包括悬架和具有背面，面向激光的表面和与背面相对的空气轴承表面（ABS）的滑块。 滑块安装在背面的悬架上。 磁盘驱动器还包括与滑动器耦合的EAMR换能器，位于ABS附近的EAMR换能器的一部分和滑块的面向激光的表面。 磁盘驱动器还包括与悬架连接并具有面向滑块的面向激光的表面的发光表面的激光器。 激光器具有基本上平行于悬架的光轴。 激光器基本沿光轴提供能量，并通过自由空间与EAMR传感器光学耦合。 EAMR传感器从激光器接收能量，并使用能量写入介质。

公开(公告)号：US08277669B1

公开(公告)日：2012-10-02

申请号：US12643954

申请日：2009-12-21

Applicant: Tsung Yuan Chen ,  Yimin Guo ,  Jinqiu Zhang ,  Ut Tran

Inventor： Tsung Yuan Chen ,  Yimin Guo ,  Jinqiu Zhang ,  Ut Tran

IPC: B44C1/22

CPC classification number: G11B5/3116 ,  G11B5/315 ,  G11B5/3163 ,  Y10T29/49046

Abstract: A method and system for providing a pole of magnetic transducer having an air-bearing surface (ABS) are described. Leading shield and planarization stop layers are provided. Portions of the planarization stop and shield layers distal from the ABS location are removed, providing a depression forming a bevel. The bevel has an angle greater than zero and less than ninety degrees. An intermediate layer having a top surface substantially perpendicular to the ABS location is provided. Part of the intermediate layer is removed, forming a trench having a bottom corresponding to the leading shield and a location and profile corresponding to the pole. A nonmagnetic layer is provided at least partially in the trench. The pole with a leading edge bevel corresponding to the bevel is provided in the trench. A capping layer covering the pole is provided, at least part of the intermediate layer removed, and a wrap-around shield provided.

Abstract translation: 描述了一种用于提供具有空气轴承表面（ABS）的磁换能器极的方法和系统。 提供了领先的屏蔽和平坦化停止层。 除去远离ABS位置的平坦化停止和屏蔽层的部分，提供形成斜面的凹陷。 斜面角度大于零，小于九十度。 提供具有基本上垂直于ABS位置的顶表面的中间层。 中间层的一部分被去除，形成具有对应于前屏蔽的底部的沟槽和对应于极的位置和轮廓。 至少部分地在沟槽中提供非磁性层。 在沟槽中设置有与斜面相对应的前缘斜面的极。 提供覆盖极的覆盖层，去除中间层的至少一部分和设置的环绕护罩。

公开(公告)号：US07359608B2

公开(公告)日：2008-04-15

申请号：US11586790

申请日：2006-10-26

Applicant: Ut Tran ,  David A. G. Deacon ,  Shing Man Lee

Inventor： Ut Tran ,  David A. G. Deacon ,  Shing Man Lee

IPC: G02B6/10

CPC classification number: G02B6/136 ,  G02B6/1221 ,  G02B2006/12097 ,  G02B2006/12176

Abstract: A well may be formed for access to an optical waveguide core by a process that results in an L-shaped well. The L-shaped well may then be filled with a polymer. By controlling the size of each portion of well, the occurrence of bubbles within the well and cuts to the core may be reduced.

Abstract translation: 可以形成用于通过导致L形阱的工艺来访问光波导芯的阱。 然后可以用聚合物填充L形孔。 通过控制井的每个部分的尺寸，可以减少井内气泡的发生以及对芯的切割。

公开(公告)号：US08514517B1

公开(公告)日：2013-08-20

申请号：US13174619

申请日：2011-06-30

Applicant: Sharat Batra ,  Ut Tran ,  Zhigang Bai ,  Kevin K. Lin

Inventor： Sharat Batra ,  Ut Tran ,  Zhigang Bai ,  Kevin K. Lin

IPC: G11B5/17

CPC classification number: G11B5/17 ,  G11B5/1278 ,  G11B5/3123 ,  G11B5/3136 ,  G11B2005/0005

Abstract: Systems and methods for providing hybrid coils for magnetic write heads used in disk drives are described. One such system includes a magnetic read/write head including a read transducer, and a write transducer including a pair of write poles, a hybrid coil including a first coil having a pancake coil configuration including at least one turn positioned between the pair of write poles, and a second coil having a helical coil configuration including a plurality of turns positioned between the pair of write poles, the second coil coupled to the first coil, where the at least one turn of the first coil is interleaved with the turns of the second coil.

Abstract translation: 描述了用于为磁盘驱动器中使用的写磁头提供混合线圈的系统和方法。 一种这样的系统包括包括读取换能器的磁读/写头和包括一对写磁极的写换能器，包括具有扁平线圈配置的第一线圈的混合线圈，该扁平线圈配置包括位于一对写极之间的至少一匝 以及具有螺旋线圈结构的第二线圈，其包括位于所述一对写入极之间的多个匝，所述第二线圈耦合到所述第一线圈，其中所述第一线圈的所述至少一个匝与所述第二线圈的匝相交叉 线圈

公开(公告)号：US08276258B1

公开(公告)日：2012-10-02

申请号：US12198657

申请日：2008-08-26

Applicant: Ut Tran ,  Zhigang Bai

Inventor： Ut Tran ,  Zhigang Bai

IPC: G11B5/127 ,  H04R31/00

CPC classification number: G11B5/3163 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315

Abstract: A method and system provide a magnetic transducer that includes an underlayer and a first nonmagnetic layer on the underlayer. The method and system include providing a first trench in the first nonmagnetic layer. The first trench has at least one edge corresponding to at least one side shield. The method and system also include providing a second nonmagnetic layer in the first trench and providing a second trench in the second nonmagnetic layer. The method and system include providing the main pole. At least part of the main pole resides in the second trench. The method and system further include removing at least a portion of the second nonmagnetic layer between the edge(s) and the main pole. The method and system also provide the side shield(s) in the first trench. The side shield(s) extend from at least an air-bearing surface location to not further than a coil front location.

Abstract translation: 一种方法和系统提供一种磁传感器，其包括底层上的底层和第一非磁性层。 该方法和系统包括在第一非磁性层中提供第一沟槽。 第一沟槽具有至少一个对应于至少一个侧面屏蔽的边缘。 该方法和系统还包括在第一沟槽中提供第二非磁性层，并在第二非磁性层中提供第二沟槽。 该方法和系统包括提供主极。 主极的至少一部分位于第二沟槽中。 所述方法和系统还包括在所述边缘和所述主极之间移除所述第二非磁性层的至少一部分。 该方法和系统还在第一沟槽中提供侧屏蔽。 侧护罩从至少一个空气轴承表面位置延伸到不超过线圈前部位置。

公开(公告)号：US08228633B1

公开(公告)日：2012-07-24

申请号：US12196131

申请日：2008-08-21

Applicant: Ut Tran ,  Zhigang Bai

Inventor： Ut Tran ,  Zhigang Bai

IPC: G11B5/23

CPC classification number: G11B5/3116 ,  G11B5/1278 ,  G11B5/3163

Abstract: A method and system provide a magnetic transducer that includes an air-bearing surface (ABS). The magnetic transducer includes an underlayer and a main pole residing on the underlayer. The main pole includes a front and a rear. The front resides at the ABS, while the rear is distal from the ABS. The main pole also includes a first portion having a first magnetic moment and a second portion having a second magnetic moment. The first portion has a front face at the ABS and terminates between the ABS and the rear of the main pole. A part of the second portion resides on the first portion, while another part of the second portion resides between the first portion of the main pole and the rear of the main pole. The first magnetic moment is less than the second magnetic moment.

Abstract translation: 一种方法和系统提供包括空气轴承表面（ABS）的磁换能器。 磁换能器包括底层和位于底层上的主极。 主杆包括前部和后部。 前部位于ABS，而后部位于ABS的远端。 主极还包括具有第一磁矩的第一部分和具有第二磁矩的第二部分。 第一部分在ABS处具有前表面并且终止于ABS和主极的后部之间。 第二部分的一部分位于第一部分上，而第二部分的另一部分位于主极的第一部分和主极的后部之间。 第一个磁矩小于第二个磁矩。

公开(公告)号：US08200054B1

公开(公告)日：2012-06-12

申请号：US12426262

申请日：2009-04-19

Applicant: Ruolin Li ,  Yufeng Hu ,  Ut Tran

Inventor： Ruolin Li ,  Yufeng Hu ,  Ut Tran

IPC: G02B6/34 ,  G11B11/00 ,  G11B11/24

CPC classification number: G11B5/314 ,  G02B6/124 ,  G02B6/34 ,  G02B6/4215 ,  G11B5/3163 ,  G11B2005/0021

Abstract: A magnetic head comprising a waveguide coupler for coupling incident electromagnetic (EM) radiation into a waveguide is disclosed. The waveguide coupler includes a bottom clad layer and a waveguide core layer formed above the bottom clad layer. An interface between the bottom clad layer and the waveguide core layer includes a first grating having a first period and a first etch depth, which are configured to couple a first portion of the incident EM radiation into the waveguide core layer. The waveguide coupler can further comprise a top clad layer formed above the waveguide core layer. An interface between the waveguide core layer and the top clad layer includes a second grating having a second period and a second etch depth. The second period and the second etch depth are configured to couple a second portion of the incident EM radiation into the waveguide core layer.

Abstract translation: 公开了一种包括用于将入射电磁（EM）辐射耦合到波导中的波导耦合器的磁头。 波导耦合器包括形成在底部包层上方的底部包层和波导芯层。 底部包层和波导芯层之间的界面包括具有第一周期和第一蚀刻深度的第一光栅，其被配置为将入射的EM辐射的第一部分耦合到波导芯层中。 波导耦合器还可以包括形成在波导芯层上方的顶部覆层。 波导芯层和顶部覆层之间的界面包括具有第二周期和第二蚀刻深度的第二光栅。 第二周期和第二蚀刻深度被配置为将入射的EM辐射的第二部分耦合到波导芯层中。

公开(公告)号：US08125856B1

公开(公告)日：2012-02-28

申请号：US12613452

申请日：2009-11-05

Applicant: Ruolin Li ,  Ut Tran ,  Yufeng Hu ,  Jinshan Li

Inventor： Ruolin Li ,  Ut Tran ,  Yufeng Hu ,  Jinshan Li

IPC: G11B11/00

CPC classification number: G11B5/105 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A method and system for providing an energy assisted magnetic recording (EAMR) disk drive are described. A media for storing data and a slider are provided. The slider has a back side, a trailing face, and an air-bearing surface (ABS) opposite to the back side. At least one laser is coupled with the trailing face of the slider, and has an optic axis substantially parallel to the trailing face. The laser(s) provide energy substantially along the optic axis. Optics are coupled with the trailing face of the slider and receive the energy from the laser(s) via free space. At least one EAMR transducer coupled with the slider. At least part of the EAMR transducer resides in proximity to the ABS. The optics direct the energy from the laser(s) to the EAMR transducer(s). The EAMR transducer(s) receive the energy from the optics and write to the media using the energy.

Abstract translation: 描述了一种用于提供能量辅助磁记录（EAMR）磁盘驱动器的方法和系统。 提供了用于存储数据的介质和滑块。 滑块具有背面，后表面和与背面相对的空气轴承表面（ABS）。 至少一个激光器与滑块的后表面耦合，并且具有基本上平行于后面的光轴。 激光器基本沿着光轴提供能量。 光学器件与滑块的后表面耦合，并通过自由空间从激光器接收能量。 至少一个EAMR传感器与滑块相连。 至少部分EAMR传感器位于ABS附近。 光学器件将能量从激光器引导到EAMR传感器。 EAMR传感器从光学器件接收能量，并使用能量写入介质。

公开(公告)号：US08098999B2

公开(公告)日：2012-01-17

申请号：US10465750

申请日：2003-06-19

Applicant: Ruolin Li ,  Anders Grunnet-Jepsen ,  John Sweetser ,  Ut Tran

Inventor： Ruolin Li ,  Anders Grunnet-Jepsen ,  John Sweetser ,  Ut Tran

IPC: H04B10/00

CPC classification number: G02B6/29322 ,  G02B6/29323 ,  G02B6/29395

Abstract: A tunable filter may be utilized to successively tune to different wavelengths. As each wavelength of the wavelength division multiplexed signal is extracted, it may be successively power monitored. Thus, power monitoring may done without requiring separate power monitors for each channel. This results in considerable advantages in some embodiments, including reduced size, reduced complexities in fabrication, and reduced yield issues in some embodiments.

Abstract translation: 可以使用可调谐滤波器来连续调谐到不同的波长。 当波分多路复用信号的每个波长被提取时，可以连续地进行功率监视。 因此，可以在不需要用于每个通道的单独的功率监视器的情况下进行功率监视。 这在一些实施例中导致显着的优点，包括在一些实施例中减小的尺寸，降低的制造复杂性以及降低的产量问题。

公开(公告)号：US08077557B1

公开(公告)日：2011-12-13

申请号：US12468813

申请日：2009-05-19

Applicant: Yufeng Hu ,  Ruolin Li ,  Ut Tran ,  Jinshan Li

Inventor： Yufeng Hu ,  Ruolin Li ,  Ut Tran ,  Jinshan Li

IPC: G11B11/05

CPC classification number: G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A magnetic recording device comprises a multi-aperture vertical cavity surface emitting laser (VCSEL) operably coupled to a magnetic recording head and a plurality of waveguides disposed in the magnetic recording head. Each of the plurality of waveguides has a first end coupled to a different aperture of the multi-aperture VCSEL. The magnetic recording device further comprises a near field transducer disposed in the magnetic recording head. Each of the plurality of waveguides has a second end coupled to the near field transducer.

Abstract translation: 磁记录装置包括可操作地耦合到磁记录头的多孔垂直腔表面发射激光器（VCSEL）和设置在磁记录头中的多个波导。 多个波导中的每一个具有耦合到多孔径VCSEL的不同孔径的第一端。 磁记录装置还包括设置在磁记录头中的近场换能器。 多个波导中的每一个具有耦合到近场换能器的第二端。