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    • 5. 发明授权
    • Dispersion compensation device, optical reception device, method for dispersion compensation, and method for optical reception
    • 色散补偿装置,光接收装置,色散补偿方法和光接收方法
    • US08326160B2
    • 2012-12-04
    • US12951643
    • 2010-11-22
    • Makoto MurakamiToshihiro Ohtani
    • Makoto MurakamiToshihiro Ohtani
    • H04B10/06H04B10/00H04B10/12H04J14/02
    • H04B10/25133H04B2210/252
    • A dispersion compensation device includes: an optical branching unit to branch an optical signal to be received; a first dispersion compensator to perform dispersion compensation on one part of the optical signal branched by the optical branching unit with a variable compensation amount; a second dispersion compensator to perform dispersion compensation on another part of the optical signal branched by the optical branching unit; a monitoring unit to monitor the communication quality of an output optical signal of the second dispersion compensator; and a controlling unit to determine the direction of variation in chromatic dispersion of the optical signal based on the direction of variation in communication quality monitored by the monitoring unit and control the compensation amount of the first dispersion compensator based on the result of the determination.
    • 色散补偿装置包括:光分支单元,用于分支待接收的光信号; 第一色散补偿器,对具有可变补偿量的光分支单元分支的光信号的一部分进行色散补偿; 第二色散补偿器,对由光分支单元分支的光信号的另一部分进行色散补偿; 监视单元,用于监视第二色散补偿器的输出光信号的通信质量; 以及控制单元,其基于由所述监视单元监视的通信质量的变化方向来确定所述光信号的色散的变化方向,并且基于所述确定的结果来控制所述第一色散补偿器的补偿量。
    • 9. 发明授权
    • Coherent integration enhancement method, positioning method, storage medium, coherent integration enhancement circuit, positioning circuit, and electronic instrument
    • 相干积分增强方法,定位方法,存储介质,相干积分增强电路,定位电路和电子仪器
    • US07830303B2
    • 2010-11-09
    • US12141324
    • 2008-06-18
    • Makoto Murakami
    • Makoto Murakami
    • G01S1/00
    • G01S19/37G01S19/30H04B1/707H04B1/70712H04B2201/70715
    • Integrated correlation values (I and Q integrated correlation values) between each of I and Q signals obtained from a received signal and a code replica are calculated by a coherent integration process performed by a correlation process circuit section 32. A coherent integration enhancement circuit section converts a phase angle θ of each of the I and Q integrated correlation values (IQ coordinate values) into a double angle, and further integrates the converted I and Q integrated correlation values (IQ coordinate values) to calculate I and Q enhanced integrated correlation values. An incoherent integration circuit section performs an incoherent integration process on the I and Q enhanced integrated correlation values. A coherent integration time T1 of the correlation circuit section is set to be 20 ms or less, and an integration time T2 of the coherent integration enhancement circuit section is set to be longer than 20 ms.
    • 通过由相关处理电路部分32执行的相干积分处理来计算从接收信号和码副本获得的每个I和Q信号之间的综合相关值(I和Q积分相关值)。相干积分增强电路部分转换 相位角&thetas; 将I和Q积分相关值(IQ坐标值)中的每一个转换成双角度,并进一步积分转换的I和Q积分相关值(IQ坐标值)以计算I和Q增强的积分相关值。 非相干积分电路部分对I和Q增强的综合相关值进行非相干积分处理。 相关电路部的相干积分时间T1被设定为20ms以下,相干积分增强电路部的积分时间T2被设定为长于20ms。
    • 10. 发明申请
    • PULSED LASER MICRO-DEPOSITION PATTERN FORMATION
    • 脉冲激光微沉积图形成
    • US20100227133A1
    • 2010-09-09
    • US12400438
    • 2009-03-09
    • Bing LiuZhendong HuMakoto MurakamiJingzhou XuYong Che
    • Bing LiuZhendong HuMakoto MurakamiJingzhou XuYong Che
    • B32B3/00C23C14/34C23C14/00
    • C23C20/04B41M5/262B41M5/267B44F1/10C23C14/28C23C14/3435G02B26/101Y10T428/24802Y10T428/24917
    • A method of forming patterns on transparent substrates using a pulsed laser is disclosed. Various embodiments include an ultrashort pulsed laser, a substrate that is transparent to the laser wavelength, and a target plate. The laser beam is guided through the transparent substrate and focused on the target surface. The target material is ablated by the laser and is deposited on the opposite substrate surface. A pattern, for example a gray scale image, is formed by scanning the laser beam relative to the target. Variations of the laser beam scan speed and scan line density control the material deposition and change the optical properties of the deposited patterns, creating a visual effect of gray scale. In some embodiments patterns may be formed on a portion of a microelectronic device during a fabrication process. In some embodiments high repetition rate picoseconds and nanosecond sources are configured to produce the patterns.
    • 公开了使用脉冲激光在透明基板上形成图案的方法。 各种实施例包括超短脉冲激光器,对激光波长透明的衬底和靶板。 激光束被引导通过透明基板并聚焦在目标表面上。 目标材料被激光烧蚀并沉积在相对的基板表面上。 通过相对于目标扫描激光束来形成例如灰度图像的图案。 激光束扫描速度和扫描线密度的变化控制材料沉积并改变沉积图案的光学性质,产生灰度的视觉效果。 在一些实施例中,可以在制造过程期间在微电子器件的一部分上形成图案。 在一些实施例中,高重复率皮秒和纳秒源被配置为产生图案。