公开(公告)号：US10061082B1

公开(公告)日：2018-08-28

申请号：US15638810

申请日：2017-06-30

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Michael Allen Seigler

IPC: G11B11/00 ,  G02B6/28 ,  G02B6/38 ,  G11B7/1387 ,  H01S3/063 ,  G02B6/36 ,  G11B11/105 ,  G11B5/60 ,  G11B5/00

CPC classification number: G02B6/2817 ,  G02B6/3632 ,  G02B6/3825 ,  G02B6/4225 ,  G11B5/6088 ,  G11B7/1387 ,  G11B11/10534 ,  G11B2005/0021 ,  H01S3/063

Abstract: Light is directed from a light source at a coupling surface of a slider into a delivery waveguide of the slider. The delivery waveguide couples a first portion of the light into a near-field transducer at a media-facing surface. A second portion of the light is coupled into a splitter waveguide. The second portion of light is detected to perform an active alignment of the light source on the slider.

公开(公告)号：US09946016B2

公开(公告)日：2018-04-17

申请号：US14863117

申请日：2015-09-23

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Pierre Asselin ,  Lien Lee ,  Karen V. Rud

IPC: G02B6/12 ,  G02B6/122 ,  G11B5/60 ,  G11B5/00 ,  G11B5/31

CPC classification number: G02B6/12002 ,  G02B6/1228 ,  G02B2006/12092 ,  G02B2006/12147 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: An apparatus includes a waveguide extending along a light-propagation direction between a light source and a media-facing surface. The waveguide comprises an assistant layer configured to receive light from a light source, truncated with an intermediate bottom cladding layer. A core layer comprises a coupling end configured to receive light from the assistant layer. The coupling end comprises a taper that widens toward the media-facing surface. A near field transducer is disposed proximate the media-facing surface and is configured to receive the light from the core layer.

公开(公告)号：US09934801B1

公开(公告)日：2018-04-03

申请号：US15620550

申请日：2017-06-12

Applicant: Seagate Technology LLC

Inventor： James Gary Wessel ,  Chen Wang ,  Chubing Peng

IPC: G11B11/00 ,  G11B5/48 ,  G11B5/00 ,  G11B7/1263 ,  G11B11/105 ,  G11B7/126 ,  G11B5/60

CPC classification number: G11B5/6088 ,  G11B5/314 ,  G11B5/607 ,  G11B7/126 ,  G11B7/1263 ,  G11B11/10506 ,  G11B11/1051 ,  G11B2005/0021

Abstract: An apparatus comprises a slider having an air bearing surface and is configured for heat-assisted magnetic recording. The slider comprises a write pole, a near-field transducer (NFT) proximate the write pole, and an optical waveguide configured to receive light from a light source and couple the light to the NFT. The optical waveguide comprises first and second opposing major surfaces and opposing first and second edges connected to the first and second major surfaces. An optically opaque overlay is disposed on or adjacent one or both of the first and second major surfaces of the optical waveguide. Periodic structures are disposed on a surface of the optically opaque overlay facing the waveguide. The periodic structures are configured to organize stray light emanating from the waveguide for absorption by the optically opaque overlay.

公开(公告)号：US09786314B1

公开(公告)日：2017-10-10

申请号：US15185420

申请日：2016-06-17

Applicant: Seagate Technology LLC

Inventor： Chubing Peng

IPC: G11B11/00 ,  G11B13/08 ,  G02B6/293 ,  G02B6/14 ,  G02B6/10 ,  G11B13/04 ,  G11B5/00

CPC classification number: G02B6/105 ,  G02B6/00 ,  G02B6/14 ,  G02B6/29331 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A first waveguide core is configured to receive light via an input surface. The first waveguide core extends away from the input surface in a light propagation direction and terminates at a coupling region. A second waveguide core has a first end at the coupling region and a second end at a media-facing surface that is opposed to the input surface. The first end is separated from the termination of the first waveguide core by a gap in the coupling region. The coupling region includes an overlap between the first and second waveguide cores and is configured to promote evanescent coupling between the first and second waveguide cores.

公开(公告)号：US09626991B2

公开(公告)日：2017-04-18

申请号：US15183065

申请日：2016-06-15

Applicant: Seagate Technology LLC

Inventor： Weibin Chen ,  Chubing Peng ,  Werner Scholz

IPC: G11B13/08 ,  G11B5/31 ,  G11B5/60 ,  G11B5/48 ,  G11B5/00

CPC classification number: G11B5/3133 ,  G11B5/314 ,  G11B5/4866 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A near-field transducer includes an enlarged region having a top side adjacent to a magnetic pole, a base side opposite the top side, and a circumference that extends from proximal to a media-facing surface to distal to a media-facing surface. The near-field transducer includes a peg region in contact with a region of the bas side of the enlarged region, the peg region extending from the enlarged region towards the media-facing surface. The near-field transducer also includes a heat sink region having a contact side, a base side, and a circumference that extends from proximal to the media-facing surface to distal from the media-facing surface. The contact side of the heat sink region is in thermal contact with both the peg region and at least a region of the base side of the enlarged region.

公开(公告)号：US09396748B2

公开(公告)日：2016-07-19

申请号：US14624066

申请日：2015-02-17

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Nils Gokemeijer ,  Yuhang Cheng ,  Kaspar Ko ,  Amit Sharma

IPC: G11B5/48 ,  G11B13/08 ,  G11B5/31 ,  G11B5/60 ,  G11B5/00

CPC classification number: G11B5/4866 ,  G11B5/314 ,  G11B5/6088 ,  G11B13/08 ,  G11B2005/0021

Abstract: A method is provided for characterizing the peg region of a near-field transducer incorporated into a write head of a HAMR magnetic recorder. The method includes providing excitation radiation to one or more near-field transducers. The near-field transducers include an enlarged disk region and a peg region at least partially in contact with the enlarged disk region. The method further includes filtering output radiation from the near-field transducers by passing a portion of photoluminescent radiation emitted by the near-field transducers in response to the excitation radiation and substantially blocking the excitation radiation transmitted by the near-field transducers. The method also includes detecting the portion of photoluminescent radiation and characterizing the peg region of at least one of the plurality of near-field transducers.

公开(公告)号：US20160133285A1

公开(公告)日：2016-05-12

申请号：US14886259

申请日：2015-10-19

Applicant: Seagate Technology LLC

Inventor： Chubing Peng

IPC: G11B5/48

CPC classification number: G11B5/4866 ,  G02B6/1226 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A method involves receiving light from a light source at a fundamental transverse electric (TE00) mode or a fundamental transverse magnetic (TM00) mode. A waveguide polarization multiplexes the light to a combined mode that includes the TM00 mode and a first higher-order transverse electric (TE10) mode. A near-field transducer is excited via the light at the combined mode.

Abstract translation: 一种方法包括以基本横向电（TE00）模式或基本横向磁（TM00）模式从光源接收光。 波导极化将光复用到包括TM00模式和第一高阶横向电（TE10）模式的组合模式。 通过组合模式下的光激发近场换能器。

公开(公告)号：US09251819B2

公开(公告)日：2016-02-02

申请号：US14078280

申请日：2013-11-12

Applicant: Seagate Technology LLC

Inventor： Chubing Peng

IPC: G11B5/48 ,  G11B5/60 ,  G11B5/127 ,  G11B5/00

CPC classification number: G11B5/4866 ,  G02B6/1226 ,  G11B5/1278 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A waveguide is configured to couple light from a light source at a fundamental transverse electric (TE) mode. A mode converter outputs the light to an output region of the waveguide at a higher-order TE mode. A plasmonic transducer receives the light at the higher order TE mode and generates surface plasmons that heat a recording medium. The plasmonic transducer includes: an input end proximate the output region of the waveguide and comprising a first convex curved edge; an output end proximate a surface that faces the recording medium, the output end comprising a second convex curved edge and a peg; and linear edges between the first and second convex curved edges.

Abstract translation: 波导被配置为在基本横向电（TE）模式下耦合来自光源的光。 A模式转换器以较高阶TE模式将光输出到波导的输出区域。 等离子体激元传感器接收高阶TE模式的光，并产生加热记录介质的表面等离子体激元。 等离子体激元传感器包括：靠近波导的输出区域的输入端，并且包括第一凸曲线边缘; 靠近面向记录介质的表面的输出端，所述输出端包括第二凸弯曲边缘和钉; 以及在第一和第二凸弯曲边缘之间的线性边缘。

公开(公告)号：US09202488B2

公开(公告)日：2015-12-01

申请号：US14151356

申请日：2014-01-09

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Lien Lee ,  Chang Xie

IPC: G11B5/48 ,  G11B5/00

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

Abstract: A waveguide has an input end near a top of a slider coupled to receive light from an energy source. The waveguide delivers the light at an output end of the waveguide near a bottom of the slider. The apparatus includes light blocking members on respective first and second cross track sides of the waveguide. The light blocking members are configured to block stray light away from a light path. The light blocking members are at a location along a length of the waveguide between the top and the bottom of the slider. Confinement of light within the waveguide is near a maximum at the location.

Abstract translation: 波导具有靠近滑块的顶部的输入端，其耦合以接收来自能量源的光。 波导将光输送到靠近滑块底部的波导的输出端。 该装置包括在波导的相应的第一和第二十字轨道侧上的遮光构件。 遮光构件被构造成阻挡杂散光远离光路。 光阻挡构件位于沿着滑块的顶部和底部之间的波导长度的位置。 波导内部的光的限制在该位置处接近最大值。

公开(公告)号：US09202487B2

公开(公告)日：2015-12-01

申请号：US13931019

申请日：2013-06-28

Applicant: Seagate Technology LLC

Inventor： Chubing Peng

IPC: G11B13/08 ,  G11B5/48 ,  G11B11/105 ,  G11B5/105 ,  G11B13/04 ,  G11B5/00

CPC classification number: G11B5/4866 ,  G11B5/105 ,  G11B11/10539 ,  G11B13/045 ,  G11B2005/0021

Abstract: An approach for aligning a light source on a slider involves filtering light emerging from the air bearing surface of a (ABS) of a heat assisted magnetic recording (HAMR) slider. A first portion of the emerging light is emitted by a near field transducer in response to optical excitation and has a component having a first polarization state. A second portion of the emerging light including stray light has polarization states different from the first polarization state. The polarizing filter substantially transmits light having the first polarization state and substantially rejects light having a polarization state orthogonal to the first polarization state. Alignment coordinates for the light source are determined based on the light transmitted through the polarizing filter.

Abstract translation: 用于对准滑块上的光源的方法包括过滤从热辅助磁记录（HAMR）滑块的（ABS）的空气支承表面出射的光。 出射光的第一部分响应于光学激发由近场传感器发射，并且具有具有第一偏振状态的分量。 包括杂散光的出射光的第二部分具有与第一偏振态不同的偏振状态。 偏振滤光器基本透射具有第一偏振态的光，并基本上抑制具有与第一偏振态正交的偏振状态的光。 基于通过偏振滤光器透射的光来确定光源的对准坐标。