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：US07050682B2

公开(公告)日：2006-05-23

申请号：US11174940

申请日：2005-07-05

Applicant: Ut Tran ,  Hamid Eslampour

Inventor： Ut Tran ,  Hamid Eslampour

IPC: G02B6/42

CPC classification number: G02B6/4232 ,  G02B6/422 ,  G02B6/4227 ,  G02B6/423 ,  H01S5/0224 ,  H01S5/02268 ,  H01S5/02272

Abstract: Optical components may be precisely positioned in three dimensions with respect to one another. A bonder which has the ability to precisely position the components in two dimensions can be utilized. The components may be equipped with contacts at different heights so that as the components come together in a third dimension, their relative positions can be sensed. This information may be fed back to the bonder to control the precise alignment in the third dimension.

Abstract translation: 光学部件可以相对于彼此精确地定位在三维空间中。 可以利用具有将二次元件精确定位的能力的接合器。 组件可以配备有不同高度的触点，使得当组件在第三维度中组合时，可以感测它们的相对位置。 该信息可以反馈到接合器以控制第三维度中的精确对准。

公开(公告)号：US08514517B1

公开(公告)日：2013-08-20

申请号：US13174619

申请日：2011-06-30

Applicant: Sharat Batra ,  Ut Tran ,  Zhigang Bai ,  Kevin K. Lin

Inventor： Sharat Batra ,  Ut Tran ,  Zhigang Bai ,  Kevin K. Lin

IPC: G11B5/17

CPC classification number: G11B5/17 ,  G11B5/1278 ,  G11B5/3123 ,  G11B5/3136 ,  G11B2005/0005

Abstract: Systems and methods for providing hybrid coils for magnetic write heads used in disk drives are described. One such system includes a magnetic read/write head including a read transducer, and a write transducer including a pair of write poles, a hybrid coil including a first coil having a pancake coil configuration including at least one turn positioned between the pair of write poles, and a second coil having a helical coil configuration including a plurality of turns positioned between the pair of write poles, the second coil coupled to the first coil, where the at least one turn of the first coil is interleaved with the turns of the second coil.

Abstract translation: 描述了用于为磁盘驱动器中使用的写磁头提供混合线圈的系统和方法。 一种这样的系统包括包括读取换能器的磁读/写头和包括一对写磁极的写换能器，包括具有扁平线圈配置的第一线圈的混合线圈，该扁平线圈配置包括位于一对写极之间的至少一匝 以及具有螺旋线圈结构的第二线圈，其包括位于所述一对写入极之间的多个匝，所述第二线圈耦合到所述第一线圈，其中所述第一线圈的所述至少一个匝与所述第二线圈的匝相交叉 线圈

公开(公告)号：US08276258B1

公开(公告)日：2012-10-02

申请号：US12198657

申请日：2008-08-26

Applicant: Ut Tran ,  Zhigang Bai

Inventor： Ut Tran ,  Zhigang Bai

IPC: G11B5/127 ,  H04R31/00

CPC classification number: G11B5/3163 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315

Abstract: A method and system provide a magnetic transducer that includes an underlayer and a first nonmagnetic layer on the underlayer. The method and system include providing a first trench in the first nonmagnetic layer. The first trench has at least one edge corresponding to at least one side shield. The method and system also include providing a second nonmagnetic layer in the first trench and providing a second trench in the second nonmagnetic layer. The method and system include providing the main pole. At least part of the main pole resides in the second trench. The method and system further include removing at least a portion of the second nonmagnetic layer between the edge(s) and the main pole. The method and system also provide the side shield(s) in the first trench. The side shield(s) extend from at least an air-bearing surface location to not further than a coil front location.

Abstract translation: 一种方法和系统提供一种磁传感器，其包括底层上的底层和第一非磁性层。 该方法和系统包括在第一非磁性层中提供第一沟槽。 第一沟槽具有至少一个对应于至少一个侧面屏蔽的边缘。 该方法和系统还包括在第一沟槽中提供第二非磁性层，并在第二非磁性层中提供第二沟槽。 该方法和系统包括提供主极。 主极的至少一部分位于第二沟槽中。 所述方法和系统还包括在所述边缘和所述主极之间移除所述第二非磁性层的至少一部分。 该方法和系统还在第一沟槽中提供侧屏蔽。 侧护罩从至少一个空气轴承表面位置延伸到不超过线圈前部位置。

公开(公告)号：US08228633B1

公开(公告)日：2012-07-24

申请号：US12196131

申请日：2008-08-21

Applicant: Ut Tran ,  Zhigang Bai

Inventor： Ut Tran ,  Zhigang Bai

IPC: G11B5/23

CPC classification number: G11B5/3116 ,  G11B5/1278 ,  G11B5/3163

Abstract: A method and system provide a magnetic transducer that includes an air-bearing surface (ABS). The magnetic transducer includes an underlayer and a main pole residing on the underlayer. The main pole includes a front and a rear. The front resides at the ABS, while the rear is distal from the ABS. The main pole also includes a first portion having a first magnetic moment and a second portion having a second magnetic moment. The first portion has a front face at the ABS and terminates between the ABS and the rear of the main pole. A part of the second portion resides on the first portion, while another part of the second portion resides between the first portion of the main pole and the rear of the main pole. The first magnetic moment is less than the second magnetic moment.

Abstract translation: 一种方法和系统提供包括空气轴承表面（ABS）的磁换能器。 磁换能器包括底层和位于底层上的主极。 主杆包括前部和后部。 前部位于ABS，而后部位于ABS的远端。 主极还包括具有第一磁矩的第一部分和具有第二磁矩的第二部分。 第一部分在ABS处具有前表面并且终止于ABS和主极的后部之间。 第二部分的一部分位于第一部分上，而第二部分的另一部分位于主极的第一部分和主极的后部之间。 第一个磁矩小于第二个磁矩。

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：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。

公开(公告)号：US07319047B2

公开(公告)日：2008-01-15

申请号：US11333454

申请日：2006-01-17

Applicant: Ruolin Li ,  Ut Tran

Inventor： Ruolin Li ,  Ut Tran

IPC: H01L21/00

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：US20070274640A1

公开(公告)日：2007-11-29

申请号：US11827267

申请日：2007-07-11

Applicant: Ut Tran ,  Hamid Eslampour

Inventor： Ut Tran ,  Hamid Eslampour

IPC: G02B6/26

CPC classification number: G02B6/4232 ,  G02B6/422 ,  G02B6/4227 ,  G02B6/423 ,  H01S5/0224 ,  H01S5/02268 ,  H01S5/02272

Abstract: Optical components may be precisely positioned in three dimensions with respect to one another. A bonder which has the ability to precisely position the components in two dimensions can be utilized. The components may be equipped with contacts at different heights so that as the components come together in a third dimension, their relative positions can be sensed. This information may be fed back to the bonder to control the precise alignment in the third dimension.

公开(公告)号：US06445536B1

公开(公告)日：2002-09-03

申请号：US09140903

申请日：1998-08-27

Applicant: Steven C. Rudy ,  Hugh C. Hiner ,  Lien-Chang Wang ,  Yong Shen ,  Ut Tran ,  Yunju Ra ,  Durga Ravipati

Inventor： Steven C. Rudy ,  Hugh C. Hiner ,  Lien-Chang Wang ,  Yong Shen ,  Ut Tran ,  Yunju Ra ,  Durga Ravipati

IPC: G11B533

CPC classification number: G11B5/3163 ,  G11B5/3109 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3967

Abstract: A thin film head apparatus and method for forming such a thin film head. In one approach, the present invention recites forming a cavity in a dielectric layer. Next, a layer of high magnetic field saturation (HBsat) material is sputter-deposited over the dielectric layer such that the HBsat material is deposited into the cavity formed in the dielectric layer. The cavity in the dielectric layer functions as a mold or “stencil” for the HBsat material. The HBsat material deposited into the cavity is used to form the first core of a thin film head. After the formation of the first core of the thin film head, a gap layer of material is deposited above the dielectric layer and above the first core. Next, a layer of HBsat material is sputter-deposited above the gap layer of material and above the first core of the thin film head. The layer of HBsat material disposed above the gap layer of material and above the first core is used to form the second core of the thin film head. Hence, this invention forms first and second cores of a thin film head using sputter deposition processes. As a result, selected HBsat materials which were not well suited to conventional thin film head formation methods can now be used to form the cores of thin film head structures.

Abstract translation: 一种用于形成这种薄膜头的薄膜头装置和方法。 在一种方法中，本发明阐述了在电介质层中形成空腔。 接下来，将一层高磁场饱和（HBsat）材料溅射沉积在电介质层上，使得HBsat材料沉积到形成在电介质层中的空腔中。 电介质层中的空腔用作HBsat材料的模具或“模板”。 沉积到腔中的HBsat材料用于形成薄膜头的第一芯。 在形成薄膜头的第一芯之后，材料的间隙层沉积在介电层上方并在第一芯上方。 接下来，将一层HBsat材料溅射沉积在材料的间隙层的上方并位于薄膜头的第一芯上方。 设置在材料的间隙层之上和第一芯之上的HBsat材料层用于形成薄膜头的第二芯。 因此，本发明使用溅射沉积工艺形成薄膜头的第一和第二芯。 结果，现在可以使用非常适合于常规薄膜头形成方法的所选HBsat材料来形成薄膜头结构的芯。