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    • 2. 发明授权
    • Light source device, optical pickup, and recording device
    • 光源装置,光学拾取器和记录装置
    • US08743673B2
    • 2014-06-03
    • US13464539
    • 2012-05-04
    • Michio OkaHiroshi YoshidaKenji Tanaka
    • Michio OkaHiroshi YoshidaKenji Tanaka
    • G11B7/135
    • G11B7/126G11B7/127G11B7/1356G11B7/1372G11B7/1378H01S5/0657H01S5/1064H01S5/50
    • A light source device configured as a master oscillator power amplifier includes a mode locked laser unit having an external resonator and a semiconductor optical amplifier that amplifies and modulates laser light emitted from the mode locked laser unit. The width in a lateral direction of a waveguide on an incident side of the semiconductor optical amplifier is set so that a horizontal lateral mode of the waveguide on the incident side of the semiconductor optical amplifier becomes multiple modes, and a magnification conversion unit that converts a magnification of incident light from the mode locked laser unit to the semiconductor optical amplifier is disposed so that a basic mode is selectively excited in optical coupling on the incident side of the semiconductor optical amplifier.
    • 配置为主振荡器功率放大器的光源装置包括具有外部谐振器的模式锁定激光器单元和放大并调制从锁模激光器单元发射的激光的半导体光放大器。 在半导体光放大器的入射侧的波导的横向的宽度被设定为使得半导体光放大器的入射侧的波导的水平横向模式变为多个模式,并且将倍率转换单元 从模式锁定激光单元到半导体光放大器的入射光的放大率被设置为使得在半导体光放大器的入射侧的光耦合中选择性地激发基本模式。
    • 7. 发明授权
    • Transmission system, transmission device, and clock synchronization method
    • 传输系统,传输设备和时钟同步方法
    • US08867681B2
    • 2014-10-21
    • US13248215
    • 2011-09-29
    • Hiroshi Yoshida
    • Hiroshi Yoshida
    • H04L7/00G06F1/12H04J3/06
    • G06F1/12H04J3/0685
    • A transmission system which couples a plurality of transmission devices to a control device includes a first transmission device which is one of the plurality of transmission devices; a first calculation circuit which calculates a first difference value indicating a frequency difference value between a common clock supplied from the control device and a first clock as a clock used in the first transmission device; and a transmitter which reports the first difference value to a second transmission device other than the first transmission device, wherein the second transmission device comprises: a second calculation circuit which calculates a second difference value indicating a frequency difference value between the common clock and a second clock used in the second transmission device, and a frequency controller which controls an oscillator generating the second clock so that the second difference value approaches the first difference value reported from the first transmission device.
    • 将多个传输设备耦合到控制设备的传输系统包括作为多个传输设备之一的第一传输设备; 第一计算电路,其计算指示从所述控制装置提供的公共时钟与所述第一时钟之间的频率差值作为所述第一发送装置中使用的时钟的第一差值; 以及向所述第一发送装置以外的第二发送装置报告所述第一差分值的发送机,其中,所述第二发送装置包括:第二计算电路,其计算表示所述公共时钟与第二发送装置之间的频率差值的第二差分值 在第二发送装置中使用的时钟,以及频率控制器,其控制产生第二时钟的振荡器,使得第二差值接近从第一发送装置报告的第一差值。