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    • 4. 发明授权
    • Semiconductor laser array device
    • 半导体激光阵列器件
    • US4764937A
    • 1988-08-16
    • US893226
    • 1986-08-05
    • Mitsuhiro MatsumotoSadayoshi MatsuiMototaka TaneyaHidenori Kawanishi
    • Mitsuhiro MatsumotoSadayoshi MatsuiMototaka TaneyaHidenori Kawanishi
    • H01S5/00H01S5/40H01S3/19
    • H01S5/4068
    • A semiconductor laser array device comprising two or more array portions, which are composed of a plurality of main parallel waveguides with an optical phase coupling in between, and one or more branching portions, each of which is positioned between the array portions and which are composed of two branching waveguides branching symmetrically with regard to the main waveguide direction from each of the main parallel waveguides of the array portions, each of the two branching waveguides positioned at the outer sides of each of the branching portions being disconnected with the adjacent branching waveguides and the other branching waveguides from the main parallel waveguides of one of the array portions being optically connected with the corresponding branching waveguides from the main parallel waveguides of the adjacent array portion.
    • 一种半导体激光器阵列器件,包括两个或更多个阵列部分,所述阵列部分由多个主平行波导组成,所述多个主平行波导之间具有光学相位耦合,以及一个或多个分支部分,每个分支部分位于阵列部分之间, 从阵列部分的每个主平行波导相对于主波导方向对称地分支的两个分支波导,位于每个分支部分的外侧的两个分支波导中的每一个分别与相邻的分支波导断开, 来自阵列部分之一的主平行波导的其它分支波导与相邻阵列部分的主平行波导的相应分支波导光学连接。
    • 6. 发明授权
    • Spatial light transmission apparatus
    • 空间光传输装置
    • US5548434A
    • 1996-08-20
    • US351224
    • 1994-11-30
    • Atsushi ShimonakaMototaka TaneyaHidenori KawanishiTatsuya Morioka
    • Atsushi ShimonakaMototaka TaneyaHidenori KawanishiTatsuya Morioka
    • H04B10/112H04B10/00
    • H04B10/1125
    • A spatial coherent light transmission apparatus according to the present invention, includes: a light transmitter for emitting a data signal as first coherent light; a light receiver for emitting second coherent light having a wavelength little different from that of The first coherent light, mixing and receiving the first and second coherent lights, and performing a coherent detection of the data signal. At least one of the light transmitter and the light receiver has a detection device for detecting at least one of a coherent light transmission state and a coherent light detection state. The apparatus further includes a control device for controlling at least one of the light transmitter and the light receiver based on information of the state detected by the detection device.
    • 根据本发明的空间相干光传输装置包括:光发射器,用于发射数据信号作为第一相干光; 用于发射具有与第一相干光的波长略微不同的波长的第二相干光的光接收器,混合和接收第一和第二相干光,以及执行数据信号的相干检测。 光发射器和光接收器中的至少一个具有用于检测相干光透射状态和相干光检测状态中的至少一个的检测装置。 该装置还包括控制装置,用于根据由检测装置检测到的状态的信息来控制光发射器和光接收器中的至少一个。
    • 9. 发明授权
    • System for transmitting a beam in the air
    • 用于在空中传输光束的系统
    • US5457561A
    • 1995-10-10
    • US101080
    • 1993-08-04
    • Mototaka TaneyaSeiki YanoHaruhisa TakiguchiAtsushi ShimonakaTatsuya MoriokaHidenori Kawanishi
    • Mototaka TaneyaSeiki YanoHaruhisa TakiguchiAtsushi ShimonakaTatsuya MoriokaHidenori Kawanishi
    • H04B10/61H04B10/079H04B10/11H04B10/116H04B10/293H04B10/516H04B10/556H04B10/564H04B10/572H04B10/00
    • H04B10/1121
    • A system for transmitting information with a coherent beam being propagatable in the air is arranged to include a transmitting device having a modulator and an emitting circuit and a receiving device having a generator, a mixer, a frequency discriminating circuit, and reproducing circuit. The modulator modulates a reference light frequency (wavelength) or phase of a coherent beam to be emitted from a light source according to the signal. The emitting circuit emits the modulated beam as a divergent beam having such a power density as being safe to human eyes. The generator generates a coherent locally oscillated beam. The mixer mixes the signal beam with the locally oscillated beam and photoelectric-converts the mixed beam. The frequency discriminating circuit frequency-discriminates the a.c. component of the photoelectric-converted output. The reproducing circuit reproduces a signal from the output of frequency discriminating circuit. Any one of the transmitting device and the receiving device has a function of keeping a relative light frequency difference (wavelength difference) between the signal beam and the locally oscillated beam constant.
    • 用于在空气中传播的相干光束传输信息的系统被布置成包括具有调制器和发射电路的发射装置和具有发生器,混频器,鉴频电路和再现电路的接收装置。 调制器根据信号调制要从光源发射的相干光束的参考光频率(波长)或相位。 发射电路发射调制束作为具有对人眼安全的功率密度的发散光束。 发生器产生相干局部振荡光束。 混合器将信号光束与局部振荡光束混合,并对混合光束进行光电转换。 频率鉴别电路对a.c.进行频率鉴别。 光电转换输出的分量。 再现电路从频率鉴别电路的输出再现信号。 发送装置和接收装置中的任一个具有保持信号光束与局部振荡光束之间的相对光频差(波长差)恒定的功能。
    • 10. 发明授权
    • Optical data reading apparatus and method
    • 光学数据读取装置及方法
    • US5657307A
    • 1997-08-12
    • US403257
    • 1995-03-10
    • Mototaka TaneyaTatsuya MoriokaHidenori KawanishiAtsushi Shimonaka
    • Mototaka TaneyaTatsuya MoriokaHidenori KawanishiAtsushi Shimonaka
    • G11B7/00G11B7/005G11B7/125
    • G11B7/127G11B7/005G11B7/126G11B2007/0013
    • An optical data reading method and apparatus for photoelectrically converting reflection light of a laser beam radiated onto a recording medium and thereby reproducing digital data recorded in the recording medium, performing a coherent detection by photoelectrically converting a first laser beam having a light frequency .nu..sub.1 and a second laser beam having a light frequency .nu..sub.2, where .nu..sub.1 -.nu..sub.2 .gtoreq.R (R: rate of reading the digital data), in a state where wavefronts of the first and second laser beams are aligned with each other, detecting temporal changes of either an amplitude or a phase of a beat signal component of the first and second laser beams, having a frequency of (.nu..sub.1 -.nu..sub.2) and being included in an photoelectrically converted output, and reading the digital data recorded in the recording medium based on a result of detection.
    • 一种光学数据读取方法和装置,用于对辐射到记录介质上的激光束的反射光进行光电转换,从而再现记录在记录介质中的数字数据,通过光电转换具有光频率nu 1的第一激光束和 在第一和第二激光束的波前彼此对准的状态下,具有光频率nu 2的第二激光束,其中nu 1 -nu 2> / = R(R:读数字数据的速率) 检测第一和第二激光束的拍频信号分量的幅度或相位的时间变化,其频率为(nu-nu 2)并被包括在光电转换输出中,并且读取记录在 基于检测结果的记录介质。