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    Semiconductor device
    27.
    发明专利
    Semiconductor device 有权
    半导体器件

    公开(公告)号：JP2006269926A

    公开(公告)日：2006-10-05

    申请号：JP2005088527

    申请日：2005-03-25

    Applicant: Fujitsu Ltd ,  富士通株式会社

    Inventor： AKIYAMA TOMOYUKI

    IPC: H01S5/0625

    CPC classification number: H01S5/0625 ,  H01S5/0602 ,  H01S5/0683 ,  H01S5/5018 ,  H01S5/5027

    Abstract: PROBLEM TO BE SOLVED: To enable integration of a semiconductor light amplifier and an element used for automatic gain control or automatic power control without incurring waveform distortion or deterioration of a noise characteristic, and also to enable achievement of the automatic gain control or the automatic power control in response to a change in the power of input signal light. SOLUTION: A semiconductor comprises a semiconductor laminate 1 disposed between a p-type semiconductor layer 12 and an n-type semiconductor layer 10 to have a plurality of regions along an active layer 11, a plurality of electrodes 2 provided on the p- or n-type semiconductor layer on the plurality of regions in a 1:1 relation, and a switch 4 connected to at least one of the plurality of electrodes for switching a bias voltage application direction. When the switch 4 is switched to its one terminal, a forward bias voltage is applied via an electrode 2A to form an amplification region 14A. When the switch 4 is witched to the other terminal, a reverse voltage is applied via an electrode 2B to form an attenuation region 14B. COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题：为了实现半导体光放大器和用于自动增益控制或自动功率控制的元件的集成，而不会引起波形失真或噪声特性的劣化，并且还能够实现自动增益控制或 响应于输入信号光的功率变化的自动功率控制。 解决方案：半导体包括设置在p型半导体层12和n型半导体层10之间以在有源层11上具有多个区域的半导体层叠体1，设置在p型半导体层12上的多个电极2 1或1相关的多个区域中的至少一个或n型半导体层，以及连接到所述多个电极中的至少一个用于切换偏置电压施加方向的开关4。 当开关4切换到其一个端子时，经由电极2A施加正向偏置电压以形成放大区域14A。 当开关4与另一端子相连时，经由电极2B施加反向电压以形成衰减区域14B。 版权所有（C）2007，JPO＆INPIT

    Tunable laser equipment
    29.
    发明专利
    Tunable laser equipment 审中-公开
    可激活的激光设备

    公开(公告)号：JP2005303077A

    公开(公告)日：2005-10-27

    申请号：JP2004118194

    申请日：2004-04-13

    Applicant: Fujitsu Ltd ,  富士通株式会社

    Inventor： TANAKA SHINSUKE ,  MORITO TAKESHI ,  TAKABAYASHI KAZUMASA

    IPC: H01S5/0625 ,  H01S5/10 ,  H01S5/14 ,  H01S5/20 ,  H01S5/34

    CPC classification number: B82Y20/00 ,  H01S5/06256 ,  H01S5/1032 ,  H01S5/1035 ,  H01S5/141 ,  H01S5/34

    Abstract: PROBLEM TO BE SOLVED: To provide the tunable laser equipment that can be controlled easily and miniaturized.
    SOLUTION: This tunable laser equipment has a set of reflectors; a semiconductor element interposed between the above set of reflectors and provided with the laminated optical gain generation area, area with a tunable filtering function, and phase control area; and an optical filter interposed between the above semiconductor element and the above set of reflectors, and with a cyclic transmission wavelength.
    COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题：提供易于控制和小型化的可调谐激光设备。

    解决方案：该可调谐激光设备具有一组反射器; 插入在上述反射器组之间并具有叠层光学增益生成区域，具有可调滤波功能的区域和相位控制区域的半导体元件; 以及插入在上述半导体元件与上述反射体组之间并具有循环透射波长的光学滤波器。 版权所有（C）2006，JPO＆NCIPI

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