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    • 22. 发明专利
    • Buried semiconductor laser
    • BURIED SEMICONDUCTOR激光
    • JP2008053649A
    • 2008-03-06
    • JP2006231125
    • 2006-08-28
    • Mitsubishi Electric Corp三菱電機株式会社
    • TAKIGUCHI TORUWATAYA TSUTOMU
    • H01S5/227
    • H01S5/34313B82Y20/00H01S5/2224H01S5/2227H01S5/2275H01S5/3072
    • PROBLEM TO BE SOLVED: To reduce leakage current of buried semiconductor laser and improve current light output characteristics.
      SOLUTION: The buried semiconductor laser 1 is formed of a p-type InP substrate 2 and has a ridge 6 consisting of a first clad layer 3 made of p-type InP, an AlGaInAs distortion quantum well active layer 4 and a second clad layer 5 made of n-type InP which are laminated. A buried current block layer 10 in which a first buried layer 7 made of p-type InP, a second buried layer 8 made of n-type InP and a third buried layer 9 made of semi-insulated Fe-doped InP are sequentially laminated is formed on both sides of the ridge 6. The upper surface of the third buried layer 9 is covered with a semiconductor layer 11 made of n-type InP. This structure can prevent a leakage current path from occurring on the upper surface of the third buried layer 9 and improve the reliability of the buried semiconductor laser.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:减少埋地半导体激光器的漏电流,提高电流光输出特性。 解决方案:埋入半导体激光器1由p型InP衬底2形成,并且具有由p型InP构成的第一覆盖层3,AlGaInAs失真量子阱有源层4和第二覆盖层3构成的脊6 由n型InP制成的覆层5层压。 埋入电流阻挡层10,其中由p型InP制成的第一掩埋层7,由n型InP制成的第二掩埋层8和由半绝缘的Fe掺杂的InP制成的第三掩埋层9依次层压 形成在脊6的两侧。第三掩埋层9的上表面被由n型InP制成的半导体层11覆盖。 这种结构可以防止在第三掩埋层9的上表面上发生漏电流路径,并提高掩埋半导体激光器的可靠性。 版权所有(C)2008,JPO&INPIT
    • 23. 发明专利
    • Semiconductor opto-electrical device
    • SEMICONDUCTOR OPTO-ELECTRICAL DEVICE
    • JP2008047672A
    • 2008-02-28
    • JP2006221213
    • 2006-08-14
    • Sumitomo Electric Ind Ltd住友電気工業株式会社
    • HASHIMOTO JUNICHI
    • H01S5/223
    • H01S5/2231B82Y20/00H01S5/209H01S5/2224H01S5/34306H01S5/34353
    • PROBLEM TO BE SOLVED: To provide a semiconductor laser having a ridge structure wherein an electric current is confined without using a pn junction.
      SOLUTION: A first conductive clad layer 13 is formed on the principal plane 15a of a GaAs substrate 15. Then, a light emission region 17 is formed on the first conductive clad layer 13. The light emission region 17 has a principal plane 17a which includes a first and a second areas 17b and 17c. A second conductive clad region 19 has a first portion 19a of the ridge geometry, and is located on the first area 17b. A current blocking region 21 is located on the second area 17c, and consists of an undoped group III-V compound semiconductor which is either GaInP or AlGaInP. GaInP and AlGaInP, each have a high resistance value, and are grown at a low temperature of 600°C or below. The undoped group III-V compound semiconductor has a resistivity of 10
      5 Ωcm or above.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种具有脊状结构的半导体激光器,其中电流被限制而不使用pn结。 解决方案:在GaAs衬底15的主平面15a上形成第一导电覆层13.然后,在第一导电覆层13上形成发光区17.发光区17具有主平面 17a包括第一和第二区域17b和17c。 第二导电包覆区域19具有脊几何形状的第一部分19a,并且位于第一区域17b上。 电流阻挡区域21位于第二区域17c上,并且由未掺杂的III-V族化合物半导体组成,其为GaInP或AlGaInP。 GaInP和AlGaInP各自具有高电阻值,并且在600℃或更低的低温下生长。 未掺杂的III-V族化合物半导体的电阻率为10Ω/ cm以上。 版权所有(C)2008,JPO&INPIT
    • 24. 发明专利
    • Self-pulsating semiconductor laser and its manufacturing method
    • 自激半导体激光器及其制造方法
    • JP2008021705A
    • 2008-01-31
    • JP2006190211
    • 2006-07-11
    • Nec Electronics CorpNecエレクトロニクス株式会社
    • KOBAYASHI MASAHIDE
    • H01S5/065
    • H01S5/2231B82Y20/00H01S5/065H01S5/2206H01S5/222H01S5/2222H01S5/2224H01S5/305H01S5/3054H01S5/3211H01S5/3432H01S5/34326H01S5/3436H01S5/4087H01S2301/02H01S2301/18
    • PROBLEM TO BE SOLVED: To provide a self-pulsating semiconductor laser which can stably keep self-pulsation in a wide temperature range.
      SOLUTION: The self-pulsating semiconductor laser is provided with a lower clad layer 103 formed on a semiconductor substrate 101, an active layer 105 formed on the lower clad layer 103, a first upper clad layer 107 formed on the active layer 105, a second upper clad layer 109 formed on the first upper clad layer 107, and a block layer BLK. The second upper clad layer 109 has a mesa structure MS. The block layer BLK is formed on both sides of the second upper clad layer 109, and it includes a layer 111 with a larger band gap than the active layer 105. During self pulsation, a saturable absorption area 115 is formed on both sides of a gain area 114 in the active layer 105. The thickness (d) of the first upper clad layer 107 is designed to be more than 220 nm and less than 450 nm.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种能够在宽温度范围内稳定地保持自脉动的自脉动半导体激光器。 < P>解决方案:自脉动半导体激光器设置有形成在半导体衬底101上的下覆盖层103,形成在下覆盖层103上的有源层105,形成在有源层105上的第一上覆盖层107 形成在第一上覆盖层107上的第二上覆盖层109和阻挡层BLK。 第二上覆层109具有台面结构MS。 阻挡层BLK形成在第二上覆盖层109的两侧,并且其包括具有比有源层105更大的带隙的层111.在自脉动期间,在a的两侧形成可饱和吸收区域115 有源层105中的增益区域114.第一上覆层107的厚度(d)设计为大于220nm且小于450nm。 版权所有(C)2008,JPO&INPIT
    • 25. 发明专利
    • Photonic integrated device using reverse-mesa structure and method for fabricating same
    • 使用反向MESA结构的光电集成装置及其制造方法
    • JP2005333144A
    • 2005-12-02
    • JP2005147644
    • 2005-05-20
    • Samsung Electronics Co Ltd三星電子株式会社Samsung Electronics Co.,Ltd.
    • PARK BYUNG HUNBAE YU-DONGKIM INKYO HEIKENKIM YOUNG-HYUNLEE SANG-MOON
    • H01S5/042G02B6/12H01S3/08H01S5/026H01S5/22H01S5/227H01S5/323
    • H01S5/026H01S5/0264H01S5/0265H01S5/2224H01S5/227H01S5/2275H01S5/32333
    • PROBLEM TO BE SOLVED: To provide a photonic integrated device using a reverse-mesa structure and a method for fabricating the same, which is capable of simplifying a fabricating process for the photonic integrated device while reducing serial resistance of the device.
      SOLUTION: This photonic integrated device using a reverse-mesa structure comprises: a first conductive substrate 21 on which a semiconductor laser, an optical modulator, a semiconductor optical amplifier, and a photo detector are integrated; a first conductive clad layer 22 and an active layer 23 sequentially formed on the first conductive substrate 21 in the form of a mesa structure; a second conductive clad layer 24 formed on the active layer in the form of a reverse-mesa structure; an ohmic contact layer 25 formed on the second clad layer 24 in such a manner that the ohmic contact layer has a width narrower than the width of an upper surface of the second conductive clad layer; a current shielding layer 28 filled in a sidewall having a mesa and reverse-mesa structure; and at least one window area formed between the above integrated elements.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种使用逆台面结构的光子集成器件及其制造方法,其能够简化光子集成器件的制造工艺,同时降低器件的串联电阻。 解决方案:使用反台面结构的该光子集成器件包括:集成有半导体激光器,光调制器,半导体光放大器和光检测器的第一导电基板21; 顺序地形成在第一导电基板21上的第一导电覆层22和有源层23,其形式为台面结构; 形成在反面台面结构形式的有源层上的第二导电覆层24; 形成在第二覆盖层24上的欧姆接触层25,使得欧姆接触层的宽度比第二导电覆层的上表面的宽度窄; 填充在具有台面和反台面结构的侧壁中的电流屏蔽层28; 以及形成在上述集成元件之间的至少一个窗口区域。 版权所有(C)2006,JPO&NCIPI