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公开(公告)号：US20140104718A1
公开(公告)日：2014-04-17
申请号：US14133647
申请日：2013-12-19
Applicant: Seagate Technology LLC
Inventor： Jason Charles Jury , Xiaowei Wu , Pierre Asselin
IPC: 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。
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公开(公告)号：US20210199803A1
公开(公告)日：2021-07-01
申请号：US16810736
申请日：2020-03-05
Applicant: Seagate Technology LLC
Inventor： Daniel J. Klemme , Pierre Asselin , Zoran Jandric
Abstract: A device includes a controller with a processor and memory with instructions for controlling power to a light source such that the light source emits a frequency-modulated continuous light beam that, over time, includes an up region, a down region, and a flat region. The up region includes increasing a frequency of the continuous light beam, the down region includes decreasing the frequency of the continuous light beam, and the flat region includes maintaining the frequency of the continuous light beam at a constant frequency.
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公开(公告)号：US10971179B1
公开(公告)日：2021-04-06
申请号：US16433467
申请日：2019-06-06
Applicant: Seagate Technology LLC
Inventor： Reyad Mehfuz , Aidan Dominic Goggin , Pierre Asselin , Christopher Neil Harvey
Abstract: A write head includes an input coupler configured to receive light excited by a light source. A waveguide core is configured to receive light from the input coupler at a fundamental transverse electric (TE00) mode. The waveguide core has a first straight portion. The waveguide core has a mode converter portion comprising a branched portion extending from the first straight portion. The mode converter portion is configured to convert the light to a higher-order (TE10) mode, the mode converter portion spaced apart from the input coupler. The waveguide core has a second straight portion between the mode converter portion and a media-facing surface. The write head has a near-field transducer at the media-facing surface, the near-field transducer receiving the light at the TE10 mode from the waveguide and directing surface plasmons to a recording medium in response thereto.
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公开(公告)号：US20200174103A1
公开(公告)日：2020-06-04
申请号：US16206831
申请日：2018-11-30
Applicant: Seagate Technology LLC
Inventor： Kevin A. Gomez , Zoran Jandric , Krishnan Subramanian , Pierre Asselin , Dan Mohr , Raghu Ambekar Ramachandra Rao
Abstract: An apparatus includes a detector, a light source configured to emit light, a reflecting apparatus having multiple reflective facets, and a mirror. The reflecting apparatus is configured to rotate around an axis and arranged to reflect the emitted light from the light source and reflect backscattered light. The mirror is arranged to reflect the backscattered light from the reflecting apparatus towards the detector.
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公开(公告)号：US20200174102A1
公开(公告)日：2020-06-04
申请号：US16206776
申请日：2018-11-30
Applicant: Seagate Technology LLC
Inventor： Pierre Asselin , Martin Giles Blaber , Zoran Jandric , Dan Mohr , Kevin A. Gomez
Abstract: An apparatus includes a detector, a light source configured to emit light, a plurality of disks, and a focusing apparatus. Each disk includes a set of prisms, and each disk is independently rotatable, arranged to receive the emitted light directly or indirectly from the light source, and arranged to receive backscattered light from an object. The focusing apparatus is arranged to focus the backscattered light from the plurality of disks towards the detector.
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Patent Agency Ranking
公开(公告)号：US20170084299A1
公开(公告)日：2017-03-23
申请号：US14863117
申请日：2015-09-23
Applicant: Seagate Technology LLC
Inventor： Chubing Peng , Pierre Asselin , Lien Lee , Karen V. Rud
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.
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公开(公告)号：US20150248906A1
公开(公告)日：2015-09-03
申请号：US14525289
申请日：2014-10-28
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。
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公开(公告)号：US11754711B2
公开(公告)日：2023-09-12
申请号：US16810736
申请日：2020-03-05
Applicant: Seagate Technology LLC
Inventor： Daniel J. Klemme , Pierre Asselin , Zoran Jandric
CPC classification number: G01S17/34 , G01S7/4808 , G01S17/89
Abstract: A device includes a controller with a processor and memory with instructions for controlling power to a light source such that the light source emits a frequency-modulated continuous light beam that, over time, includes an up region, a down region, and a flat region. The up region includes increasing a frequency of the continuous light beam, the down region includes decreasing the frequency of the continuous light beam, and the flat region includes maintaining the frequency of the continuous light beam at a constant frequency.
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公开(公告)号：US20220276354A1
公开(公告)日：2022-09-01
申请号：US17747832
申请日：2022-05-18
Applicant: Seagate Technology LLC
Inventor： Kevin A. Gomez , Zoran Jandric , Krishnan Subramanian , Pierre Asselin , Dan Mohr , Raghu Ambekar Ramachan Rao
Abstract: An apparatus includes a detector, a light source configured to emit light, a reflecting apparatus having multiple reflective facets, and a mirror. The reflecting apparatus is configured to rotate around an axis and arranged to reflect the emitted light from the light source and reflect backscattered light. The mirror is arranged to reflect the backscattered light from the reflecting apparatus towards the detector.
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公开(公告)号：US20210225397A1
公开(公告)日：2021-07-22
申请号：US17221945
申请日：2021-04-05
Applicant: Seagate Technology LLC
Inventor： Reyad Mehfuz , Aidan Dominic Goggin , Pierre Asselin , Christopher Neil Harvey
Abstract: A write head includes an input coupler configured to receive light excited by a light source. A waveguide core is configured to receive light from the input coupler at a fundamental transverse electric (TE00) mode. The waveguide core has a first straight portion. The waveguide core has a mode converter portion comprising a branched portion extending from the first straight portion. The mode converter portion is configured to convert the light to a higher-order (TE10) mode, the mode converter portion spaced apart from the input coupler. The waveguide core has a second straight portion between the mode converter portion and a media-facing surface. The write head has a near-field transducer at the media-facing surface, the near-field transducer receiving the light at the TE10 mode from the waveguide and directing surface plasmons to a recording medium in response thereto.
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