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11. 发明授权

US09336814B1 Inverse tapered waveguide for use in a heat assisted magnetic recording head 有权
标题翻译：用于热辅助磁记录头的倒锥形波导
公开(公告)号：US09336814B1
公开(公告)日：2016-05-10
申请号：US13797268
申请日：2013-03-12
申请人： Western Digital (Fremont), LLC
发明人： Zhong Shi , Michael V. Morelli , Yunfei Li , Matthew R. Gibbons
IPC分类号： G11B11/00 , G11B5/48 , G11B5/00 , G11B13/04 , G11B5/60 , G11B7/1387 , G11B11/105 , G11B11/24 , G11B5/31 , G11B7/124 , G02B6/00 , G02B6/125 , G02B6/122
CPC分类号： G02B6/1228 , G02B6/00 , G02B6/122 , G02B6/125 , G02B6/2813 , G11B5/105 , G11B5/3116 , G11B5/314 , G11B5/6088 , G11B7/124 , G11B7/1387 , G11B11/1058 , G11B11/24 , G11B2005/0021
摘要： A heat-assisted magnetic recording (HAMR) transducer is coupled with a laser for providing energy and has an air-bearing surface (ABS) configured to reside in proximity to a media during use. The HAMR transducer includes a write pole, at least one coil, and an inverse tapered waveguide optically coupled with the laser. The write pole is configured to write to a region of the media. The coil(s) energize the write pole. The inverse tapered waveguide includes an entrance distal from the ABS, a bottom proximate to the ABS, a first side and a second side opposite to the first side. The first side and the second side diverging such that at least a portion of the inverse tapered waveguide between the bottom and the top is wider than the entrance.
摘要翻译：热辅助磁记录（HAMR）传感器与用于提供能量的激光器耦合，并且具有配置成在使用期间驻留在介质附近的空气轴承表面（ABS）。 HAMR传感器包括写入极，至少一个线圈和与激光器光学耦合的倒锥形波导。写入极配置为写入介质的一个区域。线圈使写入极点通电。倒锥形波导包括远离ABS的入口，靠近ABS的底部，第一侧和与第一侧相对的第二侧。第一侧和第二侧发散，使得底部和顶部之间的倒锥形波导的至少一部分比入口宽。

12. 发明授权

US09007879B1 Interfering near field transducer having a wide metal bar feature for energy assisted magnetic recording 有权
标题翻译：干扰具有宽金属棒特征的近场传感器用于能量辅助磁记录
公开(公告)号：US09007879B1
公开(公告)日：2015-04-14
申请号：US14324294
申请日：2014-07-07
申请人： Western Digital (Fremont), LLC
发明人： Jiangrong Cao , Michael V. Morelli , Matthew R. Gibbons , Peng Zhang , Brad V. Johnson , Hongxing Yuan
IPC分类号： G11B11/00 , G11B5/48 , G11B5/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： An apparatus for energy assisted magnetic recording of a storage disk include a plurality of dielectric waveguide cores configured to direct received incident light energy to a target, and a near field transducer (NFT) configured to focus light energy received from the plurality of waveguide cores and to transmit the focused light energy onto the storage disk surface to generate a heating spot on the storage disk. The NFT includes a plurality of propagating surface plasmon polariton (PSPP) elements that are energized by the light energy from the waveguide cores. Each of the PSPP elements has a plasmonic metal bar disposed above a single waveguide core in a longitudinal alignment. Each metal bar has a width at least twice the width of the heating spot generated on the storage disk.
摘要翻译：用于存储盘的能量辅助磁记录的装置包括：多个电介质波导芯，被配置为将接收的入射光能引导到目标;以及近场换能器（NFT），被配置为聚焦从所述多个波导芯接收的光能，以及将聚焦的光能传递到存储盘表面上以在存储盘上产生加热点。 NFT包括由波导芯的光能激励的多个传播表面等离子体激元（PSPP）元件。每个PSPP元件具有在纵向对准中设置在单个波导芯上方的等离子体金属棒。每个金属棒的宽度至少是存储盘上产生的加热点宽度的两倍。

13. 发明授权

US08836949B1 Systems and methods for characterizing near field transducer performance at wafer level using asymmetric interference waveguides 有权
标题翻译：使用不对称干涉波导在晶片级表征近场传感器性能的系统和方法
公开(公告)号：US08836949B1
公开(公告)日：2014-09-16
申请号：US13621728
申请日：2012-09-17
申请人： Western Digital (Fremont), LLC
发明人： Zhong Shi , Michael V. Morelli , Hongxing Yuan
IPC分类号： G01B9/02 , G11B5/02
CPC分类号： G11B5/3166 , G02B6/1226 , G11B2005/0021
摘要： Systems and methods and apparatuses for characterizing near field transducer performance at wafer level using asymmetric interference waveguides are provided. One such system includes a light source, an input grating configured to receive light from the light source, a first waveguide arm and a second waveguide arm, each configured to receive the light, a surface plasmon receptor optically coupled to the first waveguide arm and the second waveguide arm and configured to receive light from the first waveguide arm in a first direction and the second waveguide arm in a second direction opposite of the first direction, where the first and the second waveguide arms are configured to induce a preselected phase difference in light arriving at the surface plasmon receptor, and an output grating optically coupled to the surface plasmon receptor, and a light detector coupled to, and configured to detect light from, the first output grating.
摘要翻译：提供了使用非对称干涉波导在晶片级表征近场传感器性能的系统和方法和装置。一个这样的系统包括光源，被配置为接收来自光源的光的输入光栅，第一波导臂和第二波导臂，每个配置用于接收光;光学耦合到第一波导臂的表面等离子体受体和第二波导臂并且被配置为沿着第一方向从第一波导臂接收光，而第二波导臂在与第一方向相反的第二方向上接收，其中第一和第二波导臂被配置为在光中引入预选的相位差到达表面等离子体激元受体，以及光学耦合到表面等离子体激元受体的输出光栅，以及耦合到并且被配置为检测来自第一输出光栅的光的光检测器。

14. 发明授权

US10381029B2 Method and system for providing a HAMR writer including a multi-mode interference device 有权
公开(公告)号：US10381029B2
公开(公告)日：2019-08-13
申请号：US15923044
申请日：2018-03-16
申请人： WESTERN DIGITAL (FREMONT), LLC
发明人： Jianwei Mu , Sergei Sochava , Michael V. Morelli
IPC分类号： G11B5/60 , G11B5/48 , G11B5/127 , G11B5/00 , G11B5/012
摘要： A heat-assisted magnetic recording (HAMR) write apparatus includes a laser for providing energy and resides in proximity to a media during use. The HAMR write apparatus includes a write pole that writes to a region of the media, coil(s) for energizing the write pole and a waveguide optically coupled with the laser. The waveguide includes at least one multi-mode interference (MMI) device. The MMI device has at least one input, a plurality of outputs, a propagation section and a multi-mode interference (MMI) section. Energy from the laser propagates through the propagation section before the MMI section. The propagation section expands the energy from the laser to a plurality of modes. A first portion of the outputs is output from the propagation section. The MMI section is between the propagation section and a second portion of the plurality of outputs.

15. 发明授权

US09978410B2 Heat assisted magnetic recording write apparatus having an inverse tapered waveguide 有权
公开(公告)号：US09978410B2
公开(公告)日：2018-05-22
申请号：US15631299
申请日：2017-06-23
申请人： WESTERN DIGITAL (FREMONT), LLC
发明人： Michael V. Morelli , Sergei Sochava
IPC分类号： G11B7/135 , G11B5/48 , G11B5/00
CPC分类号： G11B5/4866 , G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： A heat assisted magnetic recording (HAMR) write apparatus has a media-facing surface (MFS) and includes a pole, coil(s) and a waveguide. The waveguide is optically coupled with a laser and directs energy toward the MFS. The waveguide includes an entrance, a bottom and a mode converter having a core, an inner cladding, high index layer(s) and an outer cladding. The core has sides that diverge in width. The core has a first index of refraction. The outer cladding has a second index of refraction less than the first index of refraction. The inner cladding has a third index of refraction not greater than the second index of refraction. The inner cladding is between the high index layer(s) and the core. The high index layer(s) are between the inner and outer cladding. The high index layer(s) have a high index of refraction greater than the second index of refraction.

16. 发明授权

US09159346B1 Near field transducer using dielectric waveguide core with fine ridge feature 有权
公开(公告)号：US09159346B1
公开(公告)日：2015-10-13
申请号：US14598490
申请日：2015-01-16
申请人： Western Digital (Fremont), LLC
发明人： Jiangrong Cao , Michael V. Morelli , Hongxing Yuan , Peng Zhang , Brad V. Johnson , Matthew R. Gibbons
IPC分类号： G11B11/00 , G11B5/48 , G11B5/00
CPC分类号： G11B5/4866 , G11B5/6088 , G11B2005/0021
摘要： An apparatus for energy assisted magnetic recording of a storage disk includes a plurality of dielectric waveguide cores disposed near an air bearing surface of a magnetic recording device. Each waveguide core has a fine ridge feature on a first surface of the waveguide core and configured to receive incident light energy from an energy source. A near field transducer (NFT) is formed at the air bearing surface for focusing light energy received from the waveguide core and transmitting the focused light energy onto the storage disk surface to generate a heating spot. The NFT includes at least one plasmonic metal element disposed above the fine ridge features of the waveguide cores to form an interface for delivering propagating surface plasmon polaritons (PSPPs) to the air bearing surface. Each fine ridge feature is configured with a width approximately equivalent to a width of the heating spot.

17. 发明授权

US09142233B1 Heat assisted magnetic recording writer having a recessed pole 有权
标题翻译：热辅助磁记录器具有凹陷极
公开(公告)号：US09142233B1
公开(公告)日：2015-09-22
申请号：US14297975
申请日：2014-06-06
申请人： Western Digital (Fremont), LLC
发明人： Matthew R. Gibbons , Hongxing Yuan , Brad V. Johnson , Michael V. Morelli , Lisha Wang , Zhigang Bai , Ge Yi , Yunfei Li , Samuel W. Yuan
IPC分类号： G11B13/08 , G11B5/48 , G11B5/008 , G11B5/00 , G11B5/187
CPC分类号： G11B5/00826 , G11B5/187 , G11B5/314 , G11B5/6088 , G11B2005/0021 , G11B2005/0029
摘要： A heat assisted magnetic recording (HAMR) write transducer has an air-bearing surface (ABS) configured to reside in proximity to a media during use and is coupled with a laser that provides energy. The HAMR transducer includes a main pole, at least one additional pole adjacent to the main pole in a down track direction, a waveguide and at least one coil for energizing the main pole. The main pole is configured to write to a region of the media and is recessed from the ABS by a first distance. The additional pole(s) are recessed from the ABS by a second distance greater than the first distance. The waveguide is optically coupled with the laser and directs a portion of the energy toward the ABS at an acute angle from the ABS. A portion of the waveguide resides between the additional pole(s) and the ABS.
摘要翻译：热辅助磁记录（HAMR）写传感器具有配置成在使用期间驻留在介质附近的空气轴承表面（ABS），并且与提供能量的激光器耦合。 HAMR传感器包括主极，沿着向下轨道方向与主极相邻的至少一个附加极，波导和用于激励主极的至少一个线圈。主极被配置为写入介质的区域并且从ABS凹入第一距离。附加的杆从ABS凹入大于第一距离的第二距离。波导与激光器光学耦合，并将一部分能量从ABS引导到ABS。波导的一部分位于附加极和ABS之间。

18. 发明授权

US09064527B1 High order tapered waveguide for use in a heat assisted magnetic recording head 有权
标题翻译：用于热辅助磁记录头的高阶锥形波导
公开(公告)号：US09064527B1
公开(公告)日：2015-06-23
申请号：US13919949
申请日：2013-06-17
申请人： Western Digital (Fremont), LLC
发明人： Zhong Shi , Michael V. Morelli , Hongxing Yuan
IPC分类号： G11B11/00 , G11B11/105
CPC分类号： G11B11/10536 , G02B6/14 , G11B5/314 , G11B5/3163 , G11B5/6088 , G11B2005/0021
摘要： A heat-assisted magnetic recording (HAMR) transducer is coupled with a laser for providing energy and has an air-bearing surface (ABS) configured to reside in proximity to a media during use. The HAMR transducer includes a write pole, at least one coil, and a tapered waveguide optically coupled with the laser. The write pole is configured to write to a region of the media. The coil(s) energize the write pole. The tapered waveguide includes an entrance distal from the ABS, a bottom proximate to the ABS, a first side and a second side opposite to the first side. At least a portion of the first side and the second side converge in accordance with a function having at least one term having an order greater than one.
摘要翻译：热辅助磁记录（HAMR）传感器与用于提供能量的激光器耦合，并且具有配置成在使用期间驻留在介质附近的空气轴承表面（ABS）。 HAMR传感器包括写入极，至少一个线圈和与激光器光学耦合的锥形波导。写入极配置为写入介质的一个区域。线圈使写入极点通电。锥形波导包括远离ABS的入口，靠近ABS的底部，第一侧和与第一侧相对的第二侧。第一侧和第二侧的至少一部分根据具有至少一个项具有大于1的项的函数而会聚。

19. 发明授权

US08958272B1 Interfering near field transducer for energy assisted magnetic recording 有权
标题翻译：干扰近场传感器进行能量辅助磁记录
公开(公告)号：US08958272B1
公开(公告)日：2015-02-17
申请号：US14324466
申请日：2014-07-07
申请人： Western Digital (Fremont), LLC
发明人： Jiangrong Cao , Michael V. Morelli , Brad V. Johnson , Matthew R. Gibbons
IPC分类号： G11B11/00 , G11B5/48 , G11B5/00
CPC分类号： G11B7/1387 , G11B5/314 , G11B5/6088 , G11B11/10532 , G11B2005/0021
摘要： An apparatus for energy assisted magnetic recording of a storage disk includes a plurality of dielectric waveguide cores configured to receive incident light energy from an energy source and direct the incident light energy to a target, and a near field transducer (NFT) formed at an air bearing surface of a magnetic recording device. The NFT is configured to focus the light energy received from the plurality of waveguide cores and to transmit the focused light energy onto the storage disk surface to generate a heating spot on the storage disk. The NFT includes a plurality of propagating surface plasmon polariton (PSPP) elements configured as plasmonic metal ridges. Each of the PSPP elements has a width approximately equivalent to the width of the heating spot and is disposed above a surface of a single waveguide core in a longitudinal alignment.
摘要翻译：用于存储盘的能量辅助磁记录的装置包括多个电介质波导芯，其被配置为从能量源接收入射光能并将入射光能引导到目标，并且在空中形成近场换能器（NFT）磁记录装置的承载面。 NFT被配置为聚焦从多个波导芯接收的光能并将聚焦的光能传输到存储盘表面上，以在存储盘上产生加热点。 NFT包括配置为等离子体金属脊的多个传播表面等离子体激元（PSPP）元件。每个PSPP元件的宽度大致等于加热点的宽度，并且在纵向对准中设置在单个波导芯的表面上方。

20. 发明授权

US08958168B1 Method and system for providing an NFT having improved mechanical stability 有权
标题翻译：提供具有改善的机械稳定性的NFT的方法和系统
公开(公告)号：US08958168B1
公开(公告)日：2015-02-17
申请号：US13631756
申请日：2012-09-28
申请人： Western Digital (Fremont), LLC
发明人： Hongxing Yuan , Zhongyan Wang , Michael V. Morelli , Ronald L. Allen
IPC分类号： G11B5/127
CPC分类号： G11B5/3163 , G11B5/1278 , G11B5/314 , G11B2005/0021
摘要： A method and system provides an EAMR transducer. The transducer is coupled with a laser for providing energy and has an air-bearing surface (ABS) configured to reside in proximity to a media during use. The EAMR transducer includes a composite near field transducer (NFT), a write pole and at least one coil for energizing the write pole. The write pole is configured to write to a region of the media. The composite NFT is for focusing the energy onto the region of the media. The composite NFT includes at least one metal and at least one insulator therein.
摘要翻译：一种方法和系统提供了一种EAMR传感器。换能器与用于提供能量的激光器耦合，并且具有配置成在使用期间驻留在介质附近的空气轴承表面（ABS）。 EAMR传感器包括复合近场传感器（NFT），写极点和至少一个用于激励写极点的线圈。写入极配置为写入介质的一个区域。复合NFT用于将能量聚焦到介质的区域上。复合NFT包括至少一种金属和至少一种绝缘体。

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