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1. 发明授权

US06496334B1 Data storage and retrieval apparatus with thin film read head having planarized extra gap and shield layers and method of fabrication thereof 有权
标题翻译：具有平坦化的多余间隙和屏蔽层的薄膜读取头的数据存储和取回装置及其制造方法
公开(公告)号：US06496334B1
公开(公告)日：2002-12-17
申请号：US09579663
申请日：2000-05-26
申请人： Song Pang , Lijun Tong , Zi-Wen Dong , Kevin Lin , Joyce Hsiang
发明人： Song Pang , Lijun Tong , Zi-Wen Dong , Kevin Lin , Joyce Hsiang
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/11 , G11B5/3146 , G11B5/3909 , G11B5/3912 , G11B5/398 , G11B2005/3996
摘要： In at least one embodiment, the apparatus of the invention is a read sensor comprising a shield, a sensor element, an extra shield between the shield and the sensor element, an extra gap between the shield and the sensor and adjacent the extra shield, and a gap layer between the sensor element and the extra shield. The sensor element is positioned in a sensor layer. With the extra shield adjacent to the sensor element and separated by only the relatively thin gap layer, high areal recording density and excellent instability of the sensor element is obtained. At the same time, by fabricating the extra shield to be not significantly wider than the sensor element, the potential for shorting is minimized by placing both the gap and the thicker extra gap between the sensor lead elements and the shield. In at least one embodiment, the method of the invention is for fabricating a read sensor and comprises depositing an extra gap layer onto a shield, removing a portion of the extra gap layer to form a cavity, depositing an extra shield into the cavity, planarizing the extra gap and the extra shield, depositing a gap layer onto the extra gap and the extra shield, and depositing a sensor element onto the gap layer and adjacent to the extra shield.
摘要翻译：在至少一个实施例中，本发明的装置是一种读取传感器，其包括屏蔽件，传感器元件，屏蔽件和传感器元件之间的额外的屏蔽层，屏蔽件和传感器之间的额外间隙，并且与附加屏蔽件相邻，以及传感器元件和额外屏蔽之间的间隙层。传感器元件位于传感器层中。利用与传感器元件相邻并且仅由相对薄的间隙层隔开的附加屏蔽件，获得传感器元件的高面积记录密度和优异的不稳定性。同时，通过将额外的屏蔽制造成不比传感器元件明显更宽，通过在传感器引线元件和屏蔽之间放置间隙和更厚的额外间隙，可以使短路的可能性最小化。在至少一个实施例中，本发明的方法用于制造读取传感器，并且包括在屏蔽上沉积额外的间隙层，去除一部分额外的间隙层以形成空腔，向腔内沉积额外的屏蔽物，平坦化额外的间隙和额外的屏蔽，将间隙层沉积到额外的间隙和额外的屏蔽上，以及将传感器元件沉积到间隙层上并与额外屏蔽件相邻。

2. 发明授权

US06870712B2 Inductive writer with flat top pole and pedestal defined zero throat 失效
标题翻译：具有平顶极和底座的感应写入器定义为零喉
公开(公告)号：US06870712B2
公开(公告)日：2005-03-22
申请号：US09875601
申请日：2001-06-05
申请人： Yingjian Chen , James Wang , Qing He , Zi-Wen Dong , David J. Seagle
发明人： Yingjian Chen , James Wang , Qing He , Zi-Wen Dong , David J. Seagle
IPC分类号： G11B5/012 , G11B5/31 , G11B5/33 , G11B5/39 , G11B5/147
CPC分类号： G11B5/3967 , G11B5/012 , G11B5/3116 , G11B5/313 , G11B5/3146 , Y10T29/49044
摘要： A disk drive write head (10) having a bottom pole (60), a first insulation layer (64) formed on the bottom pole (60), a coil (38) formed on the first insulation layer (64), a second insulation layer (66) formed on the coil (38), a write gap layer (76) formed on the second insulation layer (66), and a top pole (12) formed on the write gap layer (76), where the top pole (12) is substantially flat.A second embodiment (100) is described which is produced by a damascene process.
摘要翻译：具有底极（60）的盘驱动器写入头（10），形成在所述底极（60）上的第一绝缘层（64），形成在所述第一绝缘层（64）上的线圈（38）形成在线圈（38）上的层（66），形成在第二绝缘层（66）上的写间隙层（76）和形成在写间隙层（76）上的顶极（12）（12）基本上是平的。描述了通过镶嵌工艺制造的第二实施例（100）。

3. 发明授权

US06762910B1 Data storage and retrieval apparatus with thin film read head having inset extra gap insulation layer and method of fabrication 失效
标题翻译：具有薄膜读取头的数据存储和检索装置具有插入额外的间隙绝缘层和制造方法
公开(公告)号：US06762910B1
公开(公告)日：2004-07-13
申请号：US09325104
申请日：1999-06-03
申请人： Kenneth E. Knapp , Zi-Wen Dong , Ronald A. Barr , Russel Stearns , Bill Crue
发明人： Kenneth E. Knapp , Zi-Wen Dong , Ronald A. Barr , Russel Stearns , Bill Crue
IPC分类号： G11B531
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/23 , G11B5/3116 , G11B5/313 , G11B5/3133 , G11B5/3903 , G11B5/3909 , G11B5/40
摘要： The present invention provides a thin film read head having a lower shield pedestal with an adjacent lower extra gap layer. The pedestal may be formed from a lower shield layer with the lower extra gap layer being inset within the lower shield layer so that the top surfaces of the lower extra gap layer and the pedestal are generally planar. This allows for deposition of generally planar lower gap and sensor layers. A sensor element may be defined on the generally planar surface using a bilayer resist structure. The generally planar surface of the sensor layer inhibits resist pooling which could otherwise degrade resist structure and sensor element formation. In a typical embodiment, the read head of the present invention may have a spin valve type sensor element with leads electrically coupled to the sensor element, an upper gap layer extending between the sensor element and the upper shield layer, and an upper extra gap layer disposed between at least a portion of the leads and the upper shield layer. Furthermore, the read head typically is embodied in a data storage and retrieval apparatus having a merged read/write head assembly. Reducing surface topography allows for better control of resist deposition and patterning. As such, smaller, more robust resist structures may be formed on the sensor layer to define a smaller track width sensor element. This allows manufacture of reduced track width devices while providing extra gap material for protection from lower shield-to-lead shorting.
摘要翻译：本发明提供一种具有下屏蔽基座的薄膜读取头，其具有相邻的较低额外间隙层。基座可以由下屏蔽层形成，其中较低的额外间隙层插入下屏蔽层内，使得下部额外间隙层和基座的顶表面大体上是平面的。这允许沉积大致平坦的下间隙和传感器层。传感器元件可以使用双层抗蚀剂结构限定在大体上平坦的表面上。传感器层的大体上平坦的表面抑制抗蚀剂聚集，否则会降低抗蚀剂结构和传感器元件形成。在一个典型的实施例中，本发明的读头可以具有自旋阀型传感器元件，其具有电耦合到传感器元件的引线，在传感器元件和上屏蔽层之间延伸的上间隙层，以及上部额外间隙层设置在引线的至少一部分和上屏蔽层之间。此外，读取头通常体现在具有合并的读/写头组件的数据存储和检索装置中。降低表面形貌可以更好地控制抗蚀剂沉积和图案化。因此，可以在传感器层上形成较小的，更坚固的抗蚀剂结构，以限定较小的轨道宽度传感器元件。这允许制造减小的轨道宽度装置，同时提供额外的间隙材料以防止较低的屏蔽 - 导线短路。

4. 发明授权

US08285144B2 Optical device for rearranging wavelength channels 有权
标题翻译：用于重新布置波长通道的光学装置
公开(公告)号：US08285144B2
公开(公告)日：2012-10-09
申请号：US12847220
申请日：2010-07-30
申请人： Hiroaki Yamada , Barthelemy Fondeur , Jinxi Shen , Zi-Wen Dong , Domenico Di Mola , Jyoti K. Bhardwaj , Yimin Hua
发明人： Hiroaki Yamada , Barthelemy Fondeur , Jinxi Shen , Zi-Wen Dong , Domenico Di Mola , Jyoti K. Bhardwaj , Yimin Hua
IPC分类号： H04J14/02
CPC分类号： H04J14/0279 , G02B6/12026
摘要： An optical device for rearranging wavelength channels in an optical network is disclosed. The optical device has a wavelength selective coupler having one input port and a plurality of output ports coupled to a plurality of input ports of an optical grating demultiplexor such as an arrayed waveguide grating. The wavelength channels in each of the input ports are dispersed by the demultiplexor and are directed to a plurality of output ports of the optical grating demultiplexor. As a result, at least one wavelength channel at each of the input ports of the optical grating demultiplexor is coupled into a common output port. The optical device is useful in passive optical networks wherein a same demultiplexor is used for simultaneous multiplexing and demultiplexing of wavelength channels.
摘要翻译：公开了一种用于重新布置光网络中的波长信道的光学装置。该光学器件具有波长选择耦合器，该波长选择耦合器具有耦合到诸如阵列波导光栅的光栅解复用器的多个输入端口的一个输入端口和多个输出端口。每个输入端口中的波长通道由解复用器分散，并被引导到光栅解复用器的多个输出端口。结果，光栅解复用器的每个输入端口处的至少一个波长通道耦合到公共输出端口中。该光学器件在无源光网络中是有用的，其中相同的解复用器用于同时复用和解复用波长信道。

5. 发明授权

US06947653B2 Waveguide stress engineering and compatible passivation in planar lightwave circuits 有权
标题翻译：波导应力工程和平面光波电路中的兼容钝化
公开(公告)号：US06947653B2
公开(公告)日：2005-09-20
申请号：US09977065
申请日：2001-10-12
申请人： Jyoti Kiron Bhardwaj , Robert James Brainard , Zi-Wen Dong , David Dougherty , Erik W. Egan , Niranjan Gopinathan , David K. Nakamoto , Thomas Thuan Nguyen , Sanjay M. Thekdi , Anantharaman Vaidyanathan , Hiroaki Yamada , Yingchao Yan
发明人： Jyoti Kiron Bhardwaj , Robert James Brainard , Zi-Wen Dong , David Dougherty , Erik W. Egan , Niranjan Gopinathan , David K. Nakamoto , Thomas Thuan Nguyen , Sanjay M. Thekdi , Anantharaman Vaidyanathan , Hiroaki Yamada , Yingchao Yan
IPC分类号： G02B6/12 , G02B6/13 , G02B6/136 , G02B6/34 , G02B6/10 , G02F1/295
CPC分类号： G02B6/1203 , G02B6/13 , G02B6/136 , G02B2006/12097 , G02B2006/12176
摘要： A planar lightwave circuit includes at least one optical waveguide core, and at least one feature proximate the core having a stress-engineered property to balance stress and therefore minimize birefringence affecting the core. A protective passivation layer is formed over the core and the feature to be substantially non-interfering with the balanced stress provided by the feature. The stress balancing feature may be an overcladding layer formed over the core, doped to have a coefficient of thermal expansion approximately matched to that of an underlying substrate, to symmetrically distribute stress in an undercladding between the overcladding and the substrate, away from the core. The protective passivation layer is formed to have a coefficient of thermal expansion approximately matched to that of the overcladding. In one exemplary embodiment, the passivation layer is formed from silicon nitride. Related concepts of stress release grooves, and core overetching, are also disclosed.
摘要翻译：平面光波电路包括至少一个光波导芯，并且靠近芯的至少一个特征具有应力工程化特性以平衡应力，从而最小化影响芯的双折射。在芯上形成保护性钝化层，并且该特征基本上不受由特征提供的平衡应力的干扰。应力平衡特征可以是在芯上形成的外包层，被掺杂以具有与下层衬底的热膨胀系数近似匹配的热膨胀系数，以便在外包层和衬底之间的下包层对称地分布应力。保护钝化层形成为具有与外包层大致匹配的热膨胀系数。在一个示例性实施例中，钝化层由氮化硅形成。还公开了应力释放槽和芯过蚀刻的相关概念。

6. 发明授权

US06697553B2 Compact, low insertion loss, high yield arrayed waveguide grating 有权
标题翻译：紧凑，低插入损耗，高产量阵列波导光栅
公开(公告)号：US06697553B2
公开(公告)日：2004-02-24
申请号：US10077581
申请日：2002-02-15
申请人： Jyoti Kiron Bhardwaj , Robert James Brainard , David J. Chapman , Douglas E. Crafts , Zi-Wen Dong , David Dougherty , Erik W. Egan , James F. Farrell , Mark B. Farrelly , Niranjan Gopinathan , Kenzo Ishida , David K. Nakamoto , Thomas Thuan Nguyen , Suresh Ramalingam , Steven M. Swain , Sanjay M. Thekdi , Anantharaman Vaidyanathan , Hiroaki Yamada , Yingchao Yan
发明人： Jyoti Kiron Bhardwaj , Robert James Brainard , David J. Chapman , Douglas E. Crafts , Zi-Wen Dong , David Dougherty , Erik W. Egan , James F. Farrell , Mark B. Farrelly , Niranjan Gopinathan , Kenzo Ishida , David K. Nakamoto , Thomas Thuan Nguyen , Suresh Ramalingam , Steven M. Swain , Sanjay M. Thekdi , Anantharaman Vaidyanathan , Hiroaki Yamada , Yingchao Yan
IPC分类号： G02B634
CPC分类号： G02B6/12011 , G02B6/105 , G02B6/12 , G02B6/12016 , G02B6/12021 , G02B6/12026
摘要： A planar lightwave circuit includes an arrayed waveguide grating (AWG), with input and output waveguides, partially curved array waveguides with respective length differences, and planar waveguide regions for focusing optical energy between the input/output and array waveguides. Optimal waveguide widths and spacing along the planar waveguide region facets are disclosed, which are largely determinative of AWG size and optical performance. Also disclosed are optimal cross-sectional waveguide dimensions (e.g., width and height); modified index of refraction difference between the waveguide core and cladding regions; and optimal array waveguide lengths, path length differences, and free spectral range. These features, especially when combined with advanced fiber attachment, passivation and packaging techniques, result in high-yield, high-performance AWGs (both gaussian and flattop versions).
摘要翻译：平面光波电路包括阵列波导光栅（AWG），其具有输入和输出波导，具有相应长度差的部分弯曲阵列波导和用于在输入/输出和阵列波导之间聚焦光能的平面波导区域。公开了沿着平面波导区域面的最佳波导宽度和间距，其主要决定于AWG尺寸和光学性能。还公开了最佳横截面波导尺寸（例如，宽度和高度）; 波导芯和包层区之间的折射率差异; 和最佳阵列波导长度，路径长度差和自由光谱范围。这些特性，特别是结合先进的光纤附着，钝化和封装技术，可以获得高产出，高性能的AWG（高斯型和平板型）。

7. 发明授权

US06515573B1 Method and system for providing edge-junction TMR utilizing a hard magnet as a pinned layer 有权
标题翻译：提供利用硬磁体作为被钉扎层的边缘连接TMR的方法和系统
公开(公告)号：US06515573B1
公开(公告)日：2003-02-04
申请号：US09596798
申请日：2000-06-19
申请人： Zi-Wen Dong , Zhupei Shi , Qunwen Leng
发明人： Zi-Wen Dong , Zhupei Shi , Qunwen Leng
IPC分类号： H01L4300
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/313 , G11B5/3903 , G11B5/3909 , G11B2005/3996 , H01F10/3268 , H01L43/08
摘要： A method and system for providing a magnetoresistive sensor for reading data from a recording media is disclosed. The method and system include providing at least one barrier layer and a free layer having at least one edge. The at least one edge of the free layer is adjacent to the at least one barrier layer. The free layer is ferromagnetic and has a low coercivity. The method and system also include providing at least one hard magnetic layer. The at least one hard magnetic layer has a coercivity greater than the free layer coercivity. The at least one barrier layer is disposed between the at least one hard magnetic layer and the free layer. The at least one barrier layer is sufficiently thin to allow tunneling of charge carriers between the at least one hard magnetic layer and the free layer.
摘要翻译：公开了一种用于提供用于从记录介质读取数据的磁阻传感器的方法和系统。该方法和系统包括提供至少一个阻挡层和具有至少一个边缘的自由层。自由层的至少一个边缘与至少一个阻挡层相邻。自由层是铁磁性的并且具有低的矫顽力。该方法和系统还包括提供至少一个硬磁性层。至少一个硬磁性层具有大于自由层矫顽力的矫顽力。所述至少一个阻挡层设置在所述至少一个硬磁性层和所述自由层之间。至少一个阻挡层足够薄以允许电荷载体在至少一个硬磁性层和自由层之间隧穿。

8. 发明申请

US20110052189A1 OPTICAL DEVICE FOR REARRANGING WAVELENGTH CHANNELS 有权
标题翻译：用于重新分配波长通道的光学设备
公开(公告)号：US20110052189A1
公开(公告)日：2011-03-03
申请号：US12847220
申请日：2010-07-30
申请人： Hiroaki Yamada , Barthelemy Fondeur , Jinxi Shen , Zi-Wen Dong , Domenico Di Mola , Jyoti K. Bhardwaj , Yimin Hua
发明人： Hiroaki Yamada , Barthelemy Fondeur , Jinxi Shen , Zi-Wen Dong , Domenico Di Mola , Jyoti K. Bhardwaj , Yimin Hua
IPC分类号： G02B6/28 , H04B10/24
CPC分类号： H04J14/0279 , G02B6/12026
摘要： An optical device for rearranging wavelength channels in an optical network is disclosed. The optical device has a wavelength selective coupler having one input port and a plurality of output ports coupled to a plurality of input ports of an optical grating demultiplexor such as an arrayed waveguide grating. The wavelength channels in each of the input ports are dispersed by the demultiplexor and are directed to a plurality of output ports of the optical grating demultiplexor. As a result, at least one wavelength channel at each of the input ports of the optical grating demultiplexor is coupled into a common output port. The optical device is useful in passive optical networks wherein a same demultiplexor is used for simultaneous multiplexing and demultiplexing of wavelength channels.
摘要翻译：公开了一种用于重新布置光网络中的波长信道的光学装置。该光学器件具有波长选择耦合器，该波长选择耦合器具有耦合到诸如阵列波导光栅的光栅解复用器的多个输入端口的一个输入端口和多个输出端口。每个输入端口中的波长通道被解复用器分散，并被引导到光栅解复用器的多个输出端口。结果，光栅解复用器的每个输入端口处的至少一个波长通道耦合到公共输出端口中。该光学器件在无源光网络中是有用的，其中相同的解复用器用于同时复用和解复用波长信道。

9. 发明授权

US06989962B1 Inductive write head having high magnetic moment poles and low magnetic moment thin layer in the back gap, and methods for making 失效
标题翻译：在后隙中具有高磁矩极和低磁矩薄层的感应写头及其制造方法
公开(公告)号：US06989962B1
公开(公告)日：2006-01-24
申请号：US10373564
申请日：2003-02-24
申请人： Zi-Wen Dong , James Wong , Ron Barr
发明人： Zi-Wen Dong , James Wong , Ron Barr
IPC分类号： G11B5/127
CPC分类号： G11B5/31
摘要： The present invention provides a write element for use in magnetic data recording system such as a computer disk drive. The write head utilizes the advantageous properties of high magnetic moments while overcoming the corrosion problems engendered by such materials. The write element includes a magnetic yoke constructed of first and second magnetic poles joined to one another at a back gap. While the majority of the poles are constructed of a high magnetic moment material a layer of relatively low magnetic moment material is provided on the first pole at the back gap portion of the first pole. The relatively low magnetic moment material prevents corrosion of the first pole during subsequent manufacturing of the write head. An electrically conductive coil passes through the magnetic yoke and is insulated there from. By passing an electrical current through the electrical coil, a magnetic flux is generated in the yoke. This magnetic flux then generates a magnetic fringing field in at a write gap of the yoke. The fringing field imparts magnetic data onto a recording medium passing thereby.
摘要翻译：本发明提供一种用于诸如计算机磁盘驱动器的磁数据记录系统中的写元件。写磁头利用高磁矩的有利特性，同时克服这些材料产生的腐蚀问题。写元件包括由在后间隙彼此连接的第一和第二磁极构成的磁轭。虽然大多数极由高磁矩材料构成，但是在第一极的后间隙部分的第一极上提供了一层相对低的磁矩材料。相对低的磁矩材料防止在后续制造写头期间第一极的腐蚀。导电线圈通过磁轭并与之绝缘。通过使电流通过电线圈，在磁轭中产生磁通量。该磁通量随后在磁轭的写入间隙处产生磁边缘场。边缘场将磁数据传送到通过的记录介质上。

10. 发明授权

US06721138B1 Inductive transducer with stitched pole tip and pedestal defining zero throat height 有权
标题翻译：具有缝合极尖和底座的感应传感器，定义零喉部高度
公开(公告)号：US06721138B1
公开(公告)日：2004-04-13
申请号：US09999694
申请日：2001-10-24
申请人： Yingjian Chen , Xizeng Shi , Hugh Craig Hiner , Zi-Wen Dong , Francis Liu , Matthew R. Gibbons , Joyce Anne Thompson , William D. Jensen , Chester Xiaowen Chien , Yugang Wang
发明人： Yingjian Chen , Xizeng Shi , Hugh Craig Hiner , Zi-Wen Dong , Francis Liu , Matthew R. Gibbons , Joyce Anne Thompson , William D. Jensen , Chester Xiaowen Chien , Yugang Wang
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3116 , G11B5/313 , G11B5/3146 , G11B5/3153 , G11B5/3163 , G11B5/3909 , G11B5/3967 , G11B2005/3996
摘要： An inductive transducer having first and second magnetic pedestals disposed between first and second magnetic pole layers and adjacent to a media-facing surface, the pedestals separated by a submicron, nonmagnetic gap. The first pedestal extends less than the second pedestal from the media-facing surface, defining a short throat height. The second pedestal extends further to provide sufficient area for stitching to the second pole layer. The stitching and the thickness provided by the pedestals allow plural coil layers to be disposed between the pole layers, and the second pedestal, as well as other features, can be defined by high-resolution photolithography. The two coil layers have lower resistance, lower inductance and allow the pole layers to be shorter, improving performance. All or part of either or both of the pedestals may be formed of high magnetic saturation material, further enhancing performance.
摘要翻译：一种感应换能器，其具有设置在第一和第二磁极层之间并且邻近介质面向表面的第一和第二磁性基座，所述基座由亚微米非磁性间隙分开。第一基座从面向介质的表面延伸小于第二基座，限定短的喉部高度。第二基座进一步延伸以提供足够的面积用于缝合到第二极层。由基座提供的缝合和厚度允许在极层之间设置多个线圈层，并且第二基座以及其它特征可以通过高分辨率光刻来定义。两个线圈层具有较低的电阻，较低的电感，并允许极层更短，从而提高性能。基座中的一个或两个的全部或一部分可以由高磁饱和材料形成，进一步提高性能。

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