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    • 1. 发明授权
    • Unitary mounting structure for semiconductor laser and optical fiber
    • 半导体激光和光纤的单一安装结构
    • US4523802A
    • 1985-06-18
    • US347061
    • 1982-02-08
    • Haruo SakaguchiNorio SekiShu YamamotoAkira Okada
    • Haruo SakaguchiNorio SekiShu YamamotoAkira Okada
    • G02B6/42H01S5/00G02B5/14
    • G02B6/4202G02B6/4236G02B6/4238
    • A mount arrangement of a semiconductor laser and an optical fiber as a unitary structure. A substrate has a submount disposed thereon mounting a semiconductor laser. The laser is fixed on the submount by a fusion-welding material. A fiber submount is disposed on the substrate in the vicinity of the semiconductor laser submount. An optical fiber is fixed to the fiber submount with its optical axis coaxial with the optical axis of the output light of the semiconductor laser. The fiber submount includes a material for fixing the optical fiber and has a melting point such that it will not affect the coaxial optical alignment of the semiconductor laser and the optical fiber and the fixing between the substrate, the laser submount and between the laser submount and semiconductor laser during fabrication. The thickness of the semiconductor laser submount and the fiber submount are selected in terms of the interrelation between the coefficients of linear thermal expansion of the materials forming them and the coefficient of linear thermal expansion of the optical fiber from the substrate, which are caused by temperature variations in a range including temperature variations during fabrication, are substantially equal to each other and displacement between the optical axes of the light output of the laser and optical fiber is avoided. The retention of the axes coaxial alignment minimizes reduction of the efficiency of the coupling of the optical fiber to the semiconductor laser.
    • 作为一体结构的半导体激光器和光纤的安装布置。 衬底上设置有安装半导体激光器的底座。 激光器通过熔焊材料固定在基座上。 在半导体激光器基座附近的基板上设置光纤基座。 光纤固定在纤维基座上,其光轴与半导体激光器的输出光的光轴同轴。 纤维基座包括用于固定光纤的材料,并且具有不会影响半导体激光器和光纤的同轴光学取向和基板,激光基座之间以及激光基座之间的固定的熔点 半导体激光器。 半导体激光器基座和光纤基座的厚度根据形成它们的材料的线性热膨胀系数与光纤从基板的线性热膨胀系数之间的相互关系来选择,其由温度 在制造期间包括温度变化的范围的变化基本上彼此相等,并且避免了激光和光纤的光输出的光轴之间的位移。 轴同轴对准的保持使得光纤耦合到半导体激光器的效率降低最小化。
    • 2. 发明授权
    • Coupling system for output light of semiconductor laser
    • 半导体激光器输出光耦合系统
    • US4490020A
    • 1984-12-25
    • US267554
    • 1981-05-27
    • Haruo SakaguchiNorio SekiShu Yamamoto
    • Haruo SakaguchiNorio SekiShu Yamamoto
    • G02B6/32G02B6/42G02B27/09H01S5/00G02B5/172
    • G02B19/0009G02B19/0052G02B27/09G02B27/0966G02B6/32G02B6/4203G02B6/4204G02B6/4206
    • A coupling system for the output light of a semiconductor laser, characterized in that an end portion of an optical fiber is made as a focusing lens to be coupled with the output light from an active layer of the semiconductor laser is formed so that, at least in a plane parallel to the optical axis of the output light and perpendicular to the junction plane of the semiconductor laser, the width of the end portion continuously decreases towards its tip to provide a required curvature at the tip and that the distribution of light of the semiconductor laser and that of the optical fiber and the focusing lens are matched with each other in the plane perpendicular to the junction plane of the semiconductor laser. The end portion of the optical fiber defining the focusing lens may be formed to have a fixed width in a plane parallel to the junction plane of the semiconductor laser. The end portion of the optical fiber or focusing lens may be formed so that it has a required curvature in a plane parallel to the plane of junction of the semiconductor laser and that the distribution of light of the semiconductor laser and that of the optical fiber and focusing lens are matched with each other also in a plane parallel to the junction plane of the semiconductor laser.
    • 一种用于半导体激光器的输出光的耦合系统,其特征在于,将光纤的端部制成为与来自半导体激光器的有源层的输出光耦合的聚焦透镜,使得至少 在平行于输出光的光轴并且垂直于半导体激光器的结面的平面中,端部的宽度朝向其尖端连续地减小,以在尖端处提供所需的曲率,并且, 半导体激光器和光纤和聚焦透镜的半导体激光器在垂直于半导体激光器的结面的平面中彼此匹配。 限定聚焦透镜的光纤的端部可以形成为在平行于半导体激光器的接合面的平面中具有固定的宽度。 光纤或聚焦透镜的端部可以形成为使得其在平行于半导体激光器的结的平面的平面中具有所需的曲率,并且半导体激光器和光纤的光分布 聚焦透镜在平行于半导体激光器的结面的平面中彼此匹配。
    • 6. 发明授权
    • Fault locating system in optical fiber transmission system
    • 光纤传输系统故障定位系统
    • US4257033A
    • 1981-03-17
    • US62981
    • 1979-08-02
    • Chuichi OtaNorio SekiHaruo Sakaguchi
    • Chuichi OtaNorio SekiHaruo Sakaguchi
    • H04B10/07G01M11/00H04B10/00H04B10/077H04B10/079H04B10/29H04L25/02H04B9/00G08C19/36G08C25/00
    • H04B10/07H04B10/0777H04B10/29
    • A fault location system in an optical fiber transmission system, in which a plurality of optical signal regenerative repeaters are sequentially connected in cascade in an optical fiber transmission cable at predetermined intervals to transmit digital information in the form of optical signals. Each of the plurality of optical signal regenerative repeaters sends out a fault location information signal composed of an inherent pattern and a fixed pattern when a fault occurs in the corresponding repeater. The inherent pattern is uniquely assigned to the optical signal regenerative repeater from a plurality of individually distinguishable inherent patterns obtained by establishing the start bits of a pseudo-noise sequence at time positions successively delayed from one after another. The fixed pattern is necessary for indicating the time positions of the start bits. A malfunction position in the optical fiber transmission system can be detected by detecting the fault location information signal at a monitor station in the optical fiber transmission system.
    • 光纤传输系统中的故障定位系统,其中多个光信号再生中继器以预定的间隔顺序地连接在光纤传输电缆中,以光信号的形式传输数字信息。 当对应的中继器发生故障时,多个光信号再生中继器中的每一个发送由固有模式和固定模式组成的故障位置信息信号。 固有模式通过从连续地从一个接一个地延迟的时间位置处建立伪噪声序列的起始位而获得的多个可单独区分的固有模式被唯一地分配给光信号再生中继器。 固定模式对于指示起始位的时间位置是必要的。 通过检测光纤传输系统中的监控站处的故障位置信息信号,可以检测光纤传输系统中的故障位置。
    • 7. 发明授权
    • Remote control system of an optical repeater
    • 光中继器遥控系统
    • US4369523A
    • 1983-01-18
    • US158344
    • 1980-06-10
    • Norio SekiYohtaro YatsuzukaHaruo Sakaguchi
    • Norio SekiYohtaro YatsuzukaHaruo Sakaguchi
    • H04B1/74H04B3/36H04B10/00H04B10/032H04B10/077H04B10/16H04B10/29H04B17/40H04L1/24H04L25/02H04Q9/14H04B9/00
    • H04B10/032H04B17/406H04L1/24
    • In an optical digital communication system having a plurality of optical repeaters inserted in an optical fiber cable, and a pair of terminal stations installed at the extreme ends of the optical fiber cable, the designation of the particular repeater from the terminal station is performed by the remote control signal which has the pulse pattern with the period designated to each repeater. Each repeater may have a plurality of switches for switching lasers for improving the operational reliability of the same by the redundant technique, and the control and/or the designation of the particular switch is also performed by said remote control signal by selecting the particular period and/or the repetition numbers of the period of the pulse pattern. Since the pulse pattern with the particular period and/or the repetition times of the period, and/or the repetition times and the sequence of the periods are utilized for designating the particular repeater and the switch in the designated repeater, the large number of objects (repeaters and switches) can be controlled, and the operational reliability of the control (designation) is very high.
    • 在具有插入在光纤电缆中的多个光中继器和安装在光纤电缆的末端的一对终端站的光数字通信系统中,来自终端站的特定中继器的指定由 遥控信号具有指定给每个中继器的周期的脉冲模式。 每个中继器可以具有多个用于切换激光器的开关,用于通过冗余技术来提高其操作可靠性,并且特定开关的控制和/或指定也由所述遥控信号通过选择特定周期和 /或脉冲图案的周期的重复数。 由于具有特定周期的脉冲模式和/或周期的重复次数和/或周期的重复次数和时间序列用于指定指定中继器中的特定中继器和开关,所以大量的对象 (中继器和开关)可以控制,控制(指定)的操作可靠性非常高。