公开(公告)号：US09633683B2

公开(公告)日：2017-04-25

申请号：US14626206

申请日：2015-02-19

Applicant: Seagate Technology LLC

Inventor： Tae-Woo Lee ,  Yi-Kuei Ryan Wu ,  Pierre Asselin ,  Werner Scholz

IPC: G11B5/48 ,  G02B6/12 ,  G02B6/27 ,  G11B5/60 ,  G02B6/136 ,  G02B6/122 ,  G11B5/31 ,  G11B5/00

CPC classification number: G11B5/6088 ,  G02B6/1228 ,  G02B6/136 ,  G11B5/314 ,  G11B2005/0021

Abstract: An apparatus includes a write head comprising a near-field transducer at a media-facing surface of the write head and a waveguide extending along a light-propagation direction. The waveguide is configured to receive light emitted from a light source at a fundamental transverse electric mode. The waveguide is configured to deliver the light to the near-field transducer at a transverse magnetic mode which directs surface plasmons to a recording medium in response thereto. The waveguide comprises a core with first and second tapers separated by a straight portion of constant cross sectional width. The first and second tapers successively decrease a cross-sectional width of the core as it nears the near-field transducer. The waveguide includes an end portion between the second taper and the near field transducer. The end portion comprises a top cladding layer, aside cladding layer, and a bottom cladding layer on the side cladding layer.

公开(公告)号：US20160210991A1

公开(公告)日：2016-07-21

申请号：US14972309

申请日：2015-12-17

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Amit Vasant Itagi ,  Pierre Asselin ,  Frank Edgar Stageberg ,  Werner Scholz

IPC: G11B5/48

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

Abstract: Systems that include an energy source configured to provide transverse electric (TE) mode energy; a channel waveguide configured to receive energy from the energy source, the channel waveguide having at least one mirror plane; and a near field transducer (NFT) configured to receive energy from the channel waveguide, the NFT having at least one mirror plane.

Abstract translation: 包括配置成提供横向电（TE）模式能量的能量源的系统; 沟道波导，其被配置为从能量源接收能量，所述沟道波导具有至少一个镜面; 以及被配置为从所述通道波导接收能量的近场换能器（NFT），所述NFT具有至少一个反射镜平面。

公开(公告)号：US20160163341A1

公开(公告)日：2016-06-09

申请号：US14955373

申请日：2015-12-01

Applicant: Seagate Technology LLC

Inventor： Lina Cao ,  Chubing Peng ,  Werner Scholz ,  Pierre Asselin ,  Tae-Woo Lee

IPC: G11B5/48

CPC classification number: G11B5/4866 ,  G02B6/122 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: An apparatus has an input surface configured to receive energy emitted from an energy source in a first mode. A mode order converter is configured to convert the energy from the first mode to a second mode. The waveguide of the apparatus has an input end disposed proximate the input surface and configured to receive the energy in the first mode. The waveguide has an output end disposed proximate a media-facing surface and configured to deliver energy in the second mode. The output end is at an oblique angle to a cross-track line at an intersection of the media-facing surface and a substrate-parallel plane.

Abstract translation: 一种装置具有被配置为在第一模式中从能量源发射的能量的输入表面。 模式顺序转换器被配置为将来自第一模式的能量转换为第二模式。 设备的波导具有设置在输入表面附近并被配置为在第一模式中接收能量的输入端。 波导具有靠近面向介质的表面设置的输出端，并且被配置为在第二模式中传递能量。 输出端与介质相对表面和基板平行平面的交叉点处的交叉轨道线成倾斜角。

公开(公告)号：US20160118069A1

公开(公告)日：2016-04-28

申请号：US14886240

申请日：2015-10-19

Applicant: Seagate Technology LLC

Inventor： Ruoxi Yang ,  Pierre Asselin ,  Yongjun Zhao ,  James Gary Wessel ,  Tae-Woo Lee ,  Werner Scholz ,  Frank Edgar Stageberg

IPC: G11B5/48 ,  G11B5/187

CPC classification number: G11B5/1871 ,  G02B6/122 ,  G02B6/1228 ,  G11B5/314 ,  G11B5/6088 ,  G11B11/10532 ,  G11B11/10543 ,  G11B11/10554 ,  G11B2005/0021

Abstract: A write head includes a near-field transducer near a media-facing surface of the write head. The write head includes a waveguide having a core with a first side disposed proximate to the near-field transducer. The core overlaps the near-field transducer at a substrate-parallel plane. The core includes one of a step or a taper on a second side facing away from the first side. The step or the taper causes a reduced thickness of the core normal to the substrate-parallel plane. The write head includes a cladding layer that encompassing the second side of the core and that fills in the step or the taper.

Abstract translation: 写头包括靠近写入头的面向媒体的表面附近的近场换能器。 写头包括具有芯的波导，其具有靠近近场换能器设置的第一侧的芯。 核心在基板平行平面处与近场换能器重叠。 芯部包括在远离第一侧的第二侧上的台阶或锥形中的一个。 台阶或锥形导致芯垂直于基板平行平面的芯的厚度减小。 写头包括包围芯的第二侧并且填充在台阶或锥形中的包覆层。

公开(公告)号：US20150302874A1

公开(公告)日：2015-10-22

申请号：US14691204

申请日：2015-04-20

Applicant: Seagate Technology LLC

Inventor： Pierre Asselin ,  Ruoxi Yang ,  James Gary Wessel

IPC: G11B5/48 ,  G11B5/31

CPC classification number: G11B5/6088 ,  G11B5/314 ,  G11B11/10532 ,  G11B11/10543 ,  G11B2005/0021

Abstract: An apparatus includes a write pole proximate a media-facing surface of a recording head. A near-field transducer is adjacent to the write pole. A waveguide has a core layer extending from an energy source to the media-facing surface. The core layer includes a region of reduced downtrack thickness proximate the near-field transducer. The region of reduced downtrack thickness is defined by a notch facing away from the near-field transducer. A material of the notch has a different index of refraction than an index of refraction of the core layer.

Abstract translation: 一种装置包括靠近记录头的面向媒体的表面的写入磁极。 近场换能器与写柱相邻。 波导具有从能量源延伸到面向介质的表面的芯层。 核心层包括靠近近场换能器的减小的压缩厚度的区域。 减少下行横截面厚度的区域由远离近场传感器的凹口限定。 凹口的材料具有与芯层的折射率不同的折射率。

公开(公告)号：US09013815B2

公开(公告)日：2015-04-21

申请号：US14133647

申请日：2013-12-19

Applicant: Seagate Technology LLC

Inventor： Jason Charles Jury ,  Xiaowei Wu ,  Pierre Asselin

IPC: G11B5/02 ,  G11B20/12

CPC classification number: G11B20/1252

Abstract: A cluster size measurement method includes writing a first pattern of a first size of a first number of magnetic clusters. A second pattern of a second size of a second number of magnetic clusters is written, wherein the second plurality of clusters includes clusters of the first number of clusters and a switched cluster. A cluster size of the switched cluster is automatically determined by contrasting the first size and the second size.

Abstract translation: 集群尺寸测量方法包括写入第一数量的磁簇的第一尺寸的第一图案。 写入第二数量的磁簇的第二大小的第二模式，其中第二多个簇包括第一数量的簇和交换簇的簇。 通过对比第一大小和第二大小自动确定交换群集的群集大小。