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1. 发明授权

US09646639B2 Heat assisted magnetic recording writer having integrated polarization rotation waveguides 有权
公开(公告)号：US09646639B2
公开(公告)日：2017-05-09
申请号：US14752482
申请日：2015-06-26
申请人： Western Digital (Fremont), LLC
发明人： Derek A. Van Orden , Sergei Sochava , Jianwei Mu , Ge Yi
IPC分类号： G02B6/42 , G11B5/48 , G11B5/17 , G11B5/60 , G02B6/122 , G11B5/00
CPC分类号： G11B5/4866 , B29D11/00644 , G02B6/1228 , G02B6/125 , G02B6/126 , G02B6/14 , G02F1/011 , G11B5/105 , G11B5/17 , G11B5/314 , G11B5/3163 , G11B5/6082 , G11B5/6088 , G11B2005/0021 , G11B2005/0024
摘要： A heat assisted magnetic recording (HAMR) writer is described. The HAMR writer is coupled with a laser that provides energy having a first polarization state. The HAMR writer has an air-bearing surface (ABS) configured to reside in proximity to a media during use, a plurality of waveguides, a main pole and at least one coil. The main pole writes to the media and is energized by the coil(s). The waveguides receive the energy from the laser and direct the energy toward the ABS. The waveguides include an input waveguide and an output waveguide. The input waveguide is configured to carry light having the first polarization state. The output waveguide is configured to carry light having a second polarization state different from the first polarization state. The waveguides are optically coupled and configured to transfer the energy from the first polarization state to the second polarization state.

2. 发明授权

US10037773B2 Heat assisted magnetic recording writer having integrated polarization rotation waveguides 有权
公开(公告)号：US10037773B2
公开(公告)日：2018-07-31
申请号：US15587571
申请日：2017-05-05
申请人： WESTERN DIGITAL (FREMONT), LLC
发明人： Derek A. Van Orden , Sergei Sochava , Jianwei Mu , Ge Yi
IPC分类号： G11B5/48 , G11B5/31 , G02B6/125 , G02B6/126 , G02B6/14 , G11B5/60 , G02F1/01 , B29D11/00 , G11B5/00
CPC分类号： G11B5/4866 , B29D11/00644 , G02B6/105 , G02B6/1228 , G02B6/125 , G02B6/126 , G02B6/14 , G02F1/011 , G11B5/105 , G11B5/17 , G11B5/314 , G11B5/3163 , G11B5/6082 , G11B5/6088 , G11B2005/0021 , G11B2005/0024
摘要： A heat assisted magnetic recording (HAMR) writer is described. The HAMR writer is coupled with a laser that provides energy having a first polarization state. The HAMR writer has an air-bearing surface (ABS) configured to reside in proximity to a media during use, a plurality of waveguides, a main pole and at least one coil. The main pole writes to the media and is energized by the coil(s). The waveguides receive the energy from the laser and direct the energy toward the ABS. The waveguides include an input waveguide and an output waveguide. The input waveguide is configured to carry light having the first polarization state. The output waveguide is configured to carry light having a second polarization state different from the first polarization state. The waveguides are optically coupled and configured to transfer the energy from the first polarization state to the second polarization state.

3. 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.

4. 发明授权

US09953670B1 Method and system for providing a HAMR writer including a multi-mode interference device 有权
公开(公告)号：US09953670B1
公开(公告)日：2018-04-24
申请号：US14936967
申请日：2015-11-10
申请人： Western Digital (Fremont), LLC
发明人： Jianwei Mu , Sergei Sochava , Michael V. Morelli
IPC分类号： G11B5/127 , G11B5/48 , G11B5/60 , G11B5/00 , G11B5/012
CPC分类号： G11B5/4866 , G11B5/012 , G11B5/127 , G11B5/6088 , G11B2005/0021
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.

5. 发明授权

US09384765B1 Method and system for providing a HAMR writer having improved optical efficiency 有权
标题翻译：提供具有改善的光学效率的HAMR写入器的方法和系统
公开(公告)号：US09384765B1
公开(公告)日：2016-07-05
申请号：US14864665
申请日：2015-09-24
申请人： Western Digital (Fremont), LLC
发明人： Jianwei Mu , Hongxing Yuan , Michael V. Morelli , Sergei Sochava
IPC分类号： G11B5/02 , G11B5/33 , G11B5/48 , G11B5/60 , G11B11/00 , G11B5/00
CPC分类号： G02B6/122 , G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： A heat-assisted magnetic recording (HAMR) write apparatus includes a laser and has an air-bearing surface (ABS) that resides in proximity to a media during use. The HAMR write apparatus includes a write pole that writes to the media, coil(s) for energizing the write pole and a waveguide optically coupled with the laser. The waveguide includes an entrance distal from the ABS and a bottom proximate to the ABS. The waveguide also includes a mode converter, a mode stripper optically coupled with the mode converter and an inverse tapered section optically coupled with the mode stripper. The mode converter has sides converging from a first width proximate to the entrance to a second width distal from the entrance and less than the first width. The mode stripper is between the inverse tapered section and the mode converter. The inverse tapered section has an entrance and an exit wider than the entrance.
摘要翻译：热辅助磁记录（HAMR）写入装置包括激光器并且在使用期间具有驻留在介质附近的空气轴承表面（ABS）。 HAMR写装置包括写入磁极的写极，用于激励写磁极的线圈和与激光器光耦合的波导。波导包括远离ABS的入口和靠近ABS的底部。波导还包括模式转换器，与模式转换器光学耦合的模式剥离器和与模式剥离器光学耦合的倒锥形部分。模式转换器具有从接近入口的第一宽度到远离入口的第二宽度并且小于第一宽度的侧边会聚的侧面。模式剥离器在逆锥形部分和模式转换器之间。倒锥部具有比入口宽的入口和出口。

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