Grating external-cavity semiconductor laser and quasi-synchronous tuning method thereof
    61.
    发明授权
    Grating external-cavity semiconductor laser and quasi-synchronous tuning method thereof 有权
    光栅外腔半导体激光器及其准同步调谐方法

    公开(公告)号:US09036668B2

    公开(公告)日:2015-05-19

    申请号:US12990594

    申请日:2009-06-10

    摘要: A method for quasi-synchronous tuning of wavelength or frequency of grating external-cavity semiconductor laser and a corresponding semiconductor laser are provided. A grating or mirror is rotated around a quasi-synchronous tuning point (Pq) as rotation center, so as to achieve the frequency selections by grating and resonance cavity in quasi-synchronous tuning, wherein the angle of the line between the quasi-synchronous tuning point (Pq) and a conventional synchronous tuning point (P0) with respect to the direction of light incident on the grating is determined according to the angle difference between the incidence angle and diffraction angle of light on the grating. According to present invention, approximately synchronous tuning of laser is achieved with a simple and flexible design.

    摘要翻译: 提供了一种用于光栅外腔半导体激光器的波长或频率的准同步调谐的方法以及相应的半导体激光器。 光栅或反射镜围绕作为旋转中心的准同步调谐点(Pq)旋转,以便通过准同步调谐中的光栅和谐振腔实现频率选择,其中准同步调谐 根据入射角和光栅衍射角之间的角度差确定相对于入射到光栅上的光的方向的常规同步调谐点(P0)和点(Pq)。 根据本发明,通过简单灵活的设计实现激光的近似同步调谐。

    STREAMING EVENT DATA COLLECTION
    62.
    发明申请
    STREAMING EVENT DATA COLLECTION 有权
    流动事件数据收集

    公开(公告)号:US20150135193A1

    公开(公告)日:2015-05-14

    申请号:US14539049

    申请日:2014-11-12

    IPC分类号: G06F9/50

    摘要: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for distributed data management. One of the methods includes receiving a plurality of feeds of streaming event data and routing feed data from each of the feeds to a respective channel of a plurality of channels, each of the channels being configured to store feed data until the feed data is consumed by a data sink, including routing feed data from a first feed to a first channel. A load metric for the first channel is determined to exceed a threshold. In response, a second channel is allocated for the first feed and feed data is redirected from the first feed to the second channel instead of the first channel.

    摘要翻译: 方法,系统和装置,包括在计算机存储介质上编码的计算机程序,用于分布式数据管理。 其中一种方法包括接收流式事件数据的多个馈送并且将馈送数据从每个馈送路由到多个信道的相应信道,每个信道被配置为存储馈送数据,直到馈送数据被 数据接收器,包括将馈送数据从第一馈送路由到第一信道。 第一通道的负载量度被确定为超过阈值。 作为响应,为第一馈送分配第二信道,并且馈送数据从第一馈送重定向到第二信道而不是第一信道。

    Grating external-cavity laser and quasi-synchronous tuning method thereof
    63.
    发明授权
    Grating external-cavity laser and quasi-synchronous tuning method thereof 有权
    光栅外腔激光器及其准同步调谐方法

    公开(公告)号:US08681825B2

    公开(公告)日:2014-03-25

    申请号:US13188592

    申请日:2011-07-22

    IPC分类号: H01S3/098 H01S3/086

    摘要: A method for quasi-synchronous tuning of laser wavelength or frequency of grating external-cavity laser and a corresponding laser are provided. A grating or mirror is rotated around a quasi-synchronous tuning point (Pq) to achieve the quasi-synchronous tuning of frequency selections by grating and resonance cavity, wherein, on the xOy coordinate plane, from the perspective of actual physical space of the laser, the rotation center Pq(xq, yq) satisfying the quasi-synchronous tuning condition can be considered as being extended from the rotation center P0(x0, y0) under the conventional synchronous tuning condition to the region enclosed by two parabolas near P0. According to the present disclosure, approximately-synchronous tuning of laser is achieved with simple and flexible designs.

    摘要翻译: 提供了激光波长或光栅外腔激光器频率及相应激光器的准同步调谐方法。 光栅或反射镜围绕准同步调谐点(Pq)旋转,以通过光栅和谐振腔实现频率选择的准同步调谐,其中在xOy坐标平面上,从激光的实际物理空间的角度 满足准同步调谐条件的旋转中心Pq(xq,yq)可以被认为在常规同步调谐条件下从旋转中心P0(x0,y0)延伸到靠近P0的两个抛物面包围的区域。 根据本公开,通过简单和灵活的设计来实现激光的近似同步调谐。

    METHOD FOR DEPOSITING A GATE OXIDE AND A GATE ELECTRODE SELECTIVELY
    64.
    发明申请
    METHOD FOR DEPOSITING A GATE OXIDE AND A GATE ELECTRODE SELECTIVELY 审中-公开
    选择选择氧化铝和门电极的方法

    公开(公告)号:US20130078793A1

    公开(公告)日:2013-03-28

    申请号:US13528446

    申请日:2012-06-20

    IPC分类号: H01L21/28

    摘要: The present invention belongs to the technical field of integrated semiconductor circuits, and relates to a method for depositing a gate oxide and a gate electrode selectively. The present invention makes use of Octadecyltriethoxysilane's (ODTS') easy attachment to the Si—OH interface and difficult attachment to the Si—H interface, and selectively deposits the gate oxide and gate electrode materials, which avoids the unnecessary waste of materials and saves cost. Meanwhile, the present invention will transfer the etching of the gate oxide and gate electrode into the etching of SiO2 so as to reduce the difficulty of the etching process and increase the production efficiency.

    摘要翻译: 本发明属于集成半导体电路的技术领域,并且涉及选择性地沉积栅极氧化物和栅电极的方法。 本发明利用十八烷基三乙氧基硅烷(ODTS')易于连接Si-OH界面并难以附着于Si-H界面,并选择性地沉积栅极氧化物和栅电极材料,从而避免不必要的材料浪费并节约成本 。 同时,本发明将栅极氧化物和栅电极的蚀刻转移到SiO 2的蚀刻中,以减少蚀刻工艺的难度并提高生产效率。

    F-P cavity and laser using said F-P cavity
    65.
    发明授权
    F-P cavity and laser using said F-P cavity 有权
    F-P腔和使用F-P腔的激光

    公开(公告)号:US08284813B2

    公开(公告)日:2012-10-09

    申请号:US13178355

    申请日:2011-07-07

    IPC分类号: H01S3/081 H01S3/083

    摘要: The disclosure discloses a Fabry-Perot (F-P) cavity, which is a folded confocal cavity integrally formed by a monolithic optical element, the folded confocal cavity having three reflection surfaces, wherein a first reflection surface is a plane and at the same time serves as an input/output coupling surface, a second reflection surface is a plane, and a third surface is a spherical surface, curvature radius of which is equal to half of a round trip geometric length of light in the folded confocal cavity. The invention further discloses a laser based on the F-P cavity. The solution of the disclosure solves the problems in existing folded F-P cavity, such as unsatisfactory stability, sensitive to outside inferences, bulky and complicated construction.

    摘要翻译: 本公开公开了一种法布里 - 珀罗(FP)腔,其是由单片光学元件整体形成的折叠共焦腔,所述折叠的共焦腔具有三个反射表面,其中第一反射表面是平面,并且同时用作 输入/输出耦合表面,第二反射表面是平面,第三表面是球面,其曲率半径等于折叠共焦腔中的往返几何长度的一半。 本发明还公开了一种基于F-P腔的激光器。 本公开的解决方案解决了现有折叠F-P腔的问题,如稳定性不佳,外部推断敏感,体积庞大和复杂的结构。

    MIMO OFDM system
    66.
    发明授权
    MIMO OFDM system 有权
    MIMO OFDM系统

    公开(公告)号:US08121022B2

    公开(公告)日:2012-02-21

    申请号:US12621335

    申请日:2009-11-18

    IPC分类号: H04J11/00

    CPC分类号: H04L27/2601 H04L1/0618

    摘要: A MIMO OFDM system includes a plurality of space-time encoders for encoding respective data blocks with independent space-time codes. The transformed data block signals are transmitted by a plurality of transmit antennas and received by a plurality of receive antennas. The received data is pre-whitened prior to maximum likelihood detection. In one embodiment, successive interference cancellation can be sued to improve system performance. Channel parameter estimation can be enhanced by weighting the channel impulse response estimates based upon a deviation from average.

    摘要翻译: MIMO OFDM系统包括用于对具有独立时空码的各个数据块进行编码的多个时空编码器。 经变换的数据块信号由多个发射天线发射并由多个接收天线接收。 接收的数据在最大似然检测之前被预先白化。 在一个实施例中,可以起诉连续的干扰消除以改善系统性能。 可以通过基于偏离平均值的信道脉冲响应估计来加权信道参数估计。

    GRATING EXTERNAL-CAVITY SEMICONDUCTOR LASER AND QUASI-SYNCHRONOUS TUNING METHOD THEREOF
    67.
    发明申请
    GRATING EXTERNAL-CAVITY SEMICONDUCTOR LASER AND QUASI-SYNCHRONOUS TUNING METHOD THEREOF 有权
    烧结外部半导体激光器及其同步调谐方法

    公开(公告)号:US20110261843A1

    公开(公告)日:2011-10-27

    申请号:US12990594

    申请日:2009-06-10

    IPC分类号: H01S5/06

    摘要: A method for quasi-synchronous tuning of wavelength or frequency of grating external-cavity semiconductor laser and a corresponding semiconductor laser are provided. A grating or mirror is rotated around a quasi-synchronous tuning point (Pq) as rotation center, so as to achieve the frequency selections by grating and resonance cavity in quasi-synchronous tuning, wherein the angle of the line between the quasi-synchronous tuning point (Pq) and a conventional synchronous tuning point (P0) with respect to the direction of light incident on the grating is determined according to the angle difference between the incidence angle and diffraction angle of light on the grating. According to present invention, approximately synchronous tuning of laser is achieved with a simple and flexible design.

    摘要翻译: 提供了一种用于光栅外腔半导体激光器的波长或频率的准同步调谐的方法以及相应的半导体激光器。 光栅或反射镜围绕作为旋转中心的准同步调谐点(Pq)旋转,以便通过准同步调谐中的光栅和谐振腔实现频率选择,其中准同步调谐 根据入射角和光栅衍射角之间的角度差确定相对于入射到光栅上的光的方向的常规同步调谐点(P0)和点(Pq)。 根据本发明,通过简单灵活的设计实现激光的近似同步调谐。

    Channel estimation for wireless systems with multiple transit antennas
    69.
    发明授权
    Channel estimation for wireless systems with multiple transit antennas 有权
    具有多个发射天线的无线系统的信道估计

    公开(公告)号:US07756212B2

    公开(公告)日:2010-07-13

    申请号:US12259231

    申请日:2008-10-27

    申请人: Ye Li

    发明人: Ye Li

    IPC分类号: H04L1/02

    摘要: In various embodiments, techniques are provided to determine channel characteristics of various communication systems such as OFDM systems or systems using a plurality of transmit antennas by using various sets of training symbols.

    摘要翻译: 在各种实施例中,提供了通过使用各种训练符号组来确定诸如OFDM系统或使用多个发射天线的系统的各种通信系统的信道特性的技术。

    MIMO OFDM SYSTEM
    70.
    发明申请
    MIMO OFDM SYSTEM 有权
    MIMO OFDM系统

    公开(公告)号:US20100061484A1

    公开(公告)日:2010-03-11

    申请号:US12621335

    申请日:2009-11-18

    IPC分类号: H04L27/00

    CPC分类号: H04L27/2601 H04L1/0618

    摘要: A MIMO OFDM system includes a plurality of space-time encoders for encoding respective data blocks with independent space-time codes. The transformed data block signals are transmitted by a plurality of transmit antennas and received by a plurality of receive antennas. The received data is pre-whitened prior to maximum likelihood detection. In one embodiment, successive interference cancellation can be sued to improve system performance. Channel parameter estimation can be enhanced by weighting the channel impulse response estimates based upon a deviation from average.

    摘要翻译: MIMO OFDM系统包括用于对具有独立时空码的各个数据块进行编码的多个时空编码器。 经变换的数据块信号由多个发射天线发射并由多个接收天线接收。 接收的数据在最大似然检测之前被预先白化。 在一个实施例中,可以起诉连续的干扰消除以改善系统性能。 可以通过基于偏离平均值的信道脉冲响应估计来加权信道参数估计。