公开(公告)号：US08456963B1

公开(公告)日：2013-06-04

申请号：US12758319

申请日：2010-04-12

Applicant: Yufeng Hu ,  Ruolin Li ,  Ut Tran ,  Jinshan Li

Inventor： Yufeng Hu ,  Ruolin Li ,  Ut Tran ,  Jinshan Li

IPC: G11B11/00

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

Abstract: An energy assisted magnetic recording (EAMR) disk drive comprises a suspension and a slider having a back side, a laser-facing surface, and an air-bearing surface (ABS) opposite the back side. The slider is mounted to the suspension on the back side. The disk drive further comprises an EAMR transducer coupled with the slider, a portion of the EAMR transducer residing in proximity to the ABS and on the laser-facing surface of the slider. The disk drive further comprises a laser coupled with the suspension and having a light emitting surface facing the laser-facing surface of the slider. The laser has an optic axis substantially parallel to the suspension. The laser provides energy substantially along the optic axis and is optically coupled with the EAMR transducer via free space. The EAMR transducer receives the energy from the laser and writes to the media using the energy.

Abstract translation: 能量辅助磁记录（EAMR）盘驱动器包括悬架和具有背面，面向激光的表面和与背面相对的空气轴承表面（ABS）的滑块。 滑块安装在背面的悬架上。 磁盘驱动器还包括与滑动器耦合的EAMR换能器，位于ABS附近的EAMR换能器的一部分和滑块的面向激光的表面。 磁盘驱动器还包括与悬架连接并具有面向滑块的面向激光的表面的发光表面的激光器。 激光器具有基本上平行于悬架的光轴。 激光器基本沿光轴提供能量，并通过自由空间与EAMR传感器光学耦合。 EAMR传感器从激光器接收能量，并使用能量写入介质。

公开(公告)号：US20060285106A1

公开(公告)日：2006-12-21

申请号：US11497954

申请日：2006-08-01

Applicant: Achintya Bhowmik ,  Nagesh Vodrahalli ,  Gennady Farber ,  Hai-Feng Liu ,  Hamid Eslampour ,  Ut Tran ,  William Wong ,  Ruolin Li ,  Jesper Jayaswal

Inventor： Achintya Bhowmik ,  Nagesh Vodrahalli ,  Gennady Farber ,  Hai-Feng Liu ,  Hamid Eslampour ,  Ut Tran ,  William Wong ,  Ruolin Li ,  Jesper Jayaswal

IPC: G01N21/00

CPC classification number: H01S5/141 ,  H01L2224/48091 ,  H01L2224/73265 ,  H01S5/02248 ,  H01S5/0268 ,  H01S5/0683 ,  H01S5/4062 ,  H01S5/4087 ,  H01L2924/00014

Abstract: Embodiments of an optical detection apparatus are disclosed which may include one or more of a waveguide, a trench formed in the waveguide, a reflective surface, and a photodetector. The waveguide may be formed in a semiconductor substrate to propagate an optical signal received at a first end of the waveguide. The trench may also be formed in the waveguide having a first sidewall and a second sidewall, the first and second sidewalls forming first and second angles with the waveguide's propagation direction. The second sidewall may include a reflective surface formed thereon. The photodetector may be configured to receive an optical signal propagated in the waveguide, through the first sidewall and reflected from the reflective surface on the second sidewall.

Abstract translation: 公开了一种光学检测装置的实施例，其可以包括波导，在波导中形成的沟槽，反射表面和光电检测器中的一个或多个。 波导可以形成在半导体衬底中，以传播在波导的第一端处接收的光信号。 沟槽也可以形成在具有第一侧壁和第二侧壁的波导中，第一和第二侧壁与波导的传播方向形成第一和第二角度。 第二侧壁可以包括形成在其上的反射表面。 光电检测器可以被配置为接收在波导中传播的光信号，通过第一侧壁并从第二侧壁上的反射表面反射。

公开(公告)号：US07099360B2

公开(公告)日：2006-08-29

申请号：US10357630

申请日：2003-02-03

Applicant: Achintya K. Bhowmik ,  Nagesh K. Vodrahalli ,  Gennady Farber ,  Hai-Feng Liu ,  Hamid Eslampour ,  Ut Tran ,  William B. Wong ,  Ruolin Li ,  Jesper Jayaswal-Arentoff

Inventor： Achintya K. Bhowmik ,  Nagesh K. Vodrahalli ,  Gennady Farber ,  Hai-Feng Liu ,  Hamid Eslampour ,  Ut Tran ,  William B. Wong ,  Ruolin Li ,  Jesper Jayaswal-Arentoff

IPC: H01S3/13 ,  H01S5/00

CPC classification number: H01S5/141 ,  H01L2224/48091 ,  H01L2224/73265 ,  H01S5/02248 ,  H01S5/0268 ,  H01S5/0683 ,  H01S5/4062 ,  H01S5/4087 ,  H01L2924/00014

Abstract: An optical transmitter includes an external cavity laser array formed in a PLC, a trench-based detector array and an AWG. The external cavity laser is formed using an array of substantially similar laser gain blocks and an array of gratings formed in waveguides connected to the gain blocks. Each grating defines the output wavelength for its corresponding external cavity laser. Each detector of the detector array includes a coupler to cause a portion of a corresponding laser output signal of the laser array to propagate through a first sidewall of a trench and reflect off a second sidewall of the trench to a photodetector. In one embodiment, the photodetector outputs a signal indicative of the power level of the reflected signal, which a controller uses to control the laser array to equalize the power of the laser output signals.

Abstract translation: 光发射机包括形成在PLC中的外腔激光器阵列，基于沟槽的检测器阵列和AWG。 使用基本相似的激光增益块的阵列和形成在连接到增益块的波导中的光栅阵列来形成外腔激光器。 每个光栅定义其对应的外腔激光器的输出波长。 检测器阵列的每个检测器包括耦合器，以使激光器阵列的对应的激光输出信号的一部分传播通过沟槽的第一侧壁并将其从沟槽的第二侧壁反射到光电检测器。 在一个实施例中，光电检测器输出指示反射信号的功率电平的信号，控制器用于控制激光器阵列以均衡激光输出信号的功率。

公开(公告)号：US07780360B2

公开(公告)日：2010-08-24

申请号：US12176758

申请日：2008-07-21

Applicant: Achintya K. Bhowmik ,  Nagesh K. Vodrahalli ,  Gennady Farber ,  Hai-Feng Liu ,  Hamid Eslampour ,  Ut Tran ,  William B. Wong ,  Ruolin Li ,  Jesper Arentoft Jayaswal

Inventor： Achintya K. Bhowmik ,  Nagesh K. Vodrahalli ,  Gennady Farber ,  Hai-Feng Liu ,  Hamid Eslampour ,  Ut Tran ,  William B. Wong ,  Ruolin Li ,  Jesper Arentoft Jayaswal

IPC: G02B6/36 ,  H01S3/13

CPC classification number: H01S5/141 ,  H01L2224/48091 ,  H01L2224/73265 ,  H01S5/02248 ,  H01S5/0268 ,  H01S5/0683 ,  H01S5/4062 ,  H01S5/4087 ,  H01L2924/00014

Abstract: Embodiments of an optical detection apparatus are disclosed which may include one or more of a waveguide, a trench formed in the waveguide, a reflective surface, and a photodetector. The waveguide may be formed in a semiconductor substrate to propagate an optical signal received at a first end of the waveguide. The trench may also be formed in the waveguide having a first sidewall and a second sidewall, the first and second sidewalls forming first and second angles with the waveguide's propagation direction. The second sidewall may include a reflective surface formed thereon. The photodetector may be configured to receive an optical signal propagated in the waveguide, through the first sidewall and reflected from the reflective surface on the second sidewall.

Abstract translation: 公开了一种光学检测装置的实施例，其可以包括波导，在波导中形成的沟槽，反射表面和光电检测器中的一个或多个。 波导可以形成在半导体衬底中，以传播在波导的第一端处接收的光信号。 沟槽也可以形成在具有第一侧壁和第二侧壁的波导中，第一和第二侧壁与波导的传播方向形成第一和第二角度。 第二侧壁可以包括形成在其上的反射表面。 光电检测器可以被配置为接收在波导中传播的光信号，通过第一侧壁并从第二侧壁上的反射表面反射。

公开(公告)号：US07071492B2

公开(公告)日：2006-07-04

申请号：US10609839

申请日：2003-06-30

Applicant: Ruolin Li ,  Ut Tran

Inventor： Ruolin Li ,  Ut Tran

IPC: H01L27/15

CPC classification number: G02F1/065 ,  G02F1/0147 ,  G02F2201/066

Abstract: A polymer well may be formed over a thermal oxide formed over a semiconductor substrate in one embodiment. The well may include a waveguide and a pair of heaters adjacent the waveguide. Each heater may be mounted on a platform of insulating material to reduce heat loss through the substrate and the thermal oxide, in one embodiment.

Abstract translation: 在一个实施例中，聚合物阱可以形成在半导体衬底上形成的热氧化物上。 阱可以包括波导和邻近波导的一对加热器。 在一个实施例中，每个加热器可以安装在绝缘材料的平台上，以减少通过基底和热氧化物的热损失。

公开(公告)号：US08200054B1

公开(公告)日：2012-06-12

申请号：US12426262

申请日：2009-04-19

Applicant: Ruolin Li ,  Yufeng Hu ,  Ut Tran

Inventor： Ruolin Li ,  Yufeng Hu ,  Ut Tran

IPC: G02B6/34 ,  G11B11/00 ,  G11B11/24

CPC classification number: G11B5/314 ,  G02B6/124 ,  G02B6/34 ,  G02B6/4215 ,  G11B5/3163 ,  G11B2005/0021

Abstract: A magnetic head comprising a waveguide coupler for coupling incident electromagnetic (EM) radiation into a waveguide is disclosed. The waveguide coupler includes a bottom clad layer and a waveguide core layer formed above the bottom clad layer. An interface between the bottom clad layer and the waveguide core layer includes a first grating having a first period and a first etch depth, which are configured to couple a first portion of the incident EM radiation into the waveguide core layer. The waveguide coupler can further comprise a top clad layer formed above the waveguide core layer. An interface between the waveguide core layer and the top clad layer includes a second grating having a second period and a second etch depth. The second period and the second etch depth are configured to couple a second portion of the incident EM radiation into the waveguide core layer.

Abstract translation: 公开了一种包括用于将入射电磁（EM）辐射耦合到波导中的波导耦合器的磁头。 波导耦合器包括形成在底部包层上方的底部包层和波导芯层。 底部包层和波导芯层之间的界面包括具有第一周期和第一蚀刻深度的第一光栅，其被配置为将入射的EM辐射的第一部分耦合到波导芯层中。 波导耦合器还可以包括形成在波导芯层上方的顶部覆层。 波导芯层和顶部覆层之间的界面包括具有第二周期和第二蚀刻深度的第二光栅。 第二周期和第二蚀刻深度被配置为将入射的EM辐射的第二部分耦合到波导芯层中。

公开(公告)号：US08125856B1

公开(公告)日：2012-02-28

申请号：US12613452

申请日：2009-11-05

Applicant: Ruolin Li ,  Ut Tran ,  Yufeng Hu ,  Jinshan Li

Inventor： Ruolin Li ,  Ut Tran ,  Yufeng Hu ,  Jinshan Li

IPC: G11B11/00

CPC classification number: G11B5/105 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A method and system for providing an energy assisted magnetic recording (EAMR) disk drive are described. A media for storing data and a slider are provided. The slider has a back side, a trailing face, and an air-bearing surface (ABS) opposite to the back side. At least one laser is coupled with the trailing face of the slider, and has an optic axis substantially parallel to the trailing face. The laser(s) provide energy substantially along the optic axis. Optics are coupled with the trailing face of the slider and receive the energy from the laser(s) via free space. At least one EAMR transducer coupled with the slider. At least part of the EAMR transducer resides in proximity to the ABS. The optics direct the energy from the laser(s) to the EAMR transducer(s). The EAMR transducer(s) receive the energy from the optics and write to the media using the energy.

Abstract translation: 描述了一种用于提供能量辅助磁记录（EAMR）磁盘驱动器的方法和系统。 提供了用于存储数据的介质和滑块。 滑块具有背面，后表面和与背面相对的空气轴承表面（ABS）。 至少一个激光器与滑块的后表面耦合，并且具有基本上平行于后面的光轴。 激光器基本沿着光轴提供能量。 光学器件与滑块的后表面耦合，并通过自由空间从激光器接收能量。 至少一个EAMR传感器与滑块相连。 至少部分EAMR传感器位于ABS附近。 光学器件将能量从激光器引导到EAMR传感器。 EAMR传感器从光学器件接收能量，并使用能量写入介质。

公开(公告)号：US08098999B2

公开(公告)日：2012-01-17

申请号：US10465750

申请日：2003-06-19

Applicant: Ruolin Li ,  Anders Grunnet-Jepsen ,  John Sweetser ,  Ut Tran

Inventor： Ruolin Li ,  Anders Grunnet-Jepsen ,  John Sweetser ,  Ut Tran

IPC: H04B10/00

CPC classification number: G02B6/29322 ,  G02B6/29323 ,  G02B6/29395

Abstract: A tunable filter may be utilized to successively tune to different wavelengths. As each wavelength of the wavelength division multiplexed signal is extracted, it may be successively power monitored. Thus, power monitoring may done without requiring separate power monitors for each channel. This results in considerable advantages in some embodiments, including reduced size, reduced complexities in fabrication, and reduced yield issues in some embodiments.

Abstract translation: 可以使用可调谐滤波器来连续调谐到不同的波长。 当波分多路复用信号的每个波长被提取时，可以连续地进行功率监视。 因此，可以在不需要用于每个通道的单独的功率监视器的情况下进行功率监视。 这在一些实施例中导致显着的优点，包括在一些实施例中减小的尺寸，降低的制造复杂性以及降低的产量问题。

公开(公告)号：US08077557B1

公开(公告)日：2011-12-13

申请号：US12468813

申请日：2009-05-19

Applicant: Yufeng Hu ,  Ruolin Li ,  Ut Tran ,  Jinshan Li

Inventor： Yufeng Hu ,  Ruolin Li ,  Ut Tran ,  Jinshan Li

IPC: G11B11/05

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

Abstract: A magnetic recording device comprises a multi-aperture vertical cavity surface emitting laser (VCSEL) operably coupled to a magnetic recording head and a plurality of waveguides disposed in the magnetic recording head. Each of the plurality of waveguides has a first end coupled to a different aperture of the multi-aperture VCSEL. The magnetic recording device further comprises a near field transducer disposed in the magnetic recording head. Each of the plurality of waveguides has a second end coupled to the near field transducer.

Abstract translation: 磁记录装置包括可操作地耦合到磁记录头的多孔垂直腔表面发射激光器（VCSEL）和设置在磁记录头中的多个波导。 多个波导中的每一个具有耦合到多孔径VCSEL的不同孔径的第一端。 磁记录装置还包括设置在磁记录头中的近场换能器。 多个波导中的每一个具有耦合到近场换能器的第二端。

公开(公告)号：US08057108B2

公开(公告)日：2011-11-15

申请号：US12847117

申请日：2010-07-30

Applicant: Achintya K. Bhowmik ,  Nagesh K. Vodrahalli ,  Gennady Farber ,  Hai-Feng Liu ,  Hamid Eslampour ,  Ut Tran ,  William B. Wong ,  Ruolin Li ,  Jesper Arentoft Jayaswal

Inventor： Achintya K. Bhowmik ,  Nagesh K. Vodrahalli ,  Gennady Farber ,  Hai-Feng Liu ,  Hamid Eslampour ,  Ut Tran ,  William B. Wong ,  Ruolin Li ,  Jesper Arentoft Jayaswal

IPC: G02B6/36

CPC classification number: H01S5/141 ,  H01L2224/48091 ,  H01L2224/73265 ,  H01S5/02248 ,  H01S5/0268 ,  H01S5/0683 ,  H01S5/4062 ,  H01S5/4087 ,  H01L2924/00014

Abstract: Embodiments of an optical detection apparatus are disclosed which may include one or more of a waveguide, a trench formed in the waveguide, a reflective surface, and a photodetector. The waveguide may be formed in a semiconductor substrate to propagate an optical signal received at a first end of the waveguide. The trench may also be formed in the waveguide having a first sidewall and a second sidewall, the first and second sidewalls forming first and second angles with the waveguide's propagation direction. The second sidewall may include a reflective surface formed thereon. The photodetector may be configured to receive an optical signal propagated in the waveguide, through the first sidewall and reflected from the reflective surface on the second sidewall.

Abstract translation: 公开了一种光学检测装置的实施例，其可以包括波导，在波导中形成的沟槽，反射表面和光电检测器中的一个或多个。 波导可以形成在半导体衬底中，以传播在波导的第一端处接收的光信号。 沟槽也可以形成在具有第一侧壁和第二侧壁的波导中，第一和第二侧壁与波导的传播方向形成第一和第二角度。 第二侧壁可以包括形成在其上的反射表面。 光电检测器可以被配置为接收在波导中传播的光信号，通过第一侧壁并从第二侧壁上的反射表面反射。