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    • 11. 发明授权
    • Gain-assisted electroabsorption modulators
    • 增益辅助电吸收调节剂
    • US07072531B2
    • 2006-07-04
    • US10944372
    • 2004-09-16
    • Kostadin D. DjordjevMichael R. T. TanChao-Kun LinScott W. Corzine
    • Kostadin D. DjordjevMichael R. T. TanChao-Kun LinScott W. Corzine
    • G02F1/17G02F1/035
    • G02B6/12007G02B2006/12078G02B2006/12126G02B2006/12142
    • A light modulator having a waveguide and a resonator is disclosed. The waveguide routes light of wavelength λ past the resonator. The resonator is coupled to the waveguide such that a portion of the light is input to the resonator, the resonator having a resonance at λ. The resonator includes a gain region in which light of wavelength λ is amplified and an absorption region in which light of wavelength λ is absorbed, the absorption region having first and second states, the first state absorbing less light of wavelength λ than the second state, the state of the absorption region is determined by an electrical signal coupled to the absorption region. The gain region provides a gain that compensates for the light absorption in the first state. In one embodiment, the waveguide and resonator are critically coupled when the absorption region is in the second state.
    • 公开了一种具有波导和谐振器的光调制器。 波导将波长λ的光通过谐振器。 谐振器耦合到波导,使得一部分光被输入到谐振器,谐振器具有λ的共振。 谐振器包括其中放大波长λ的光的增益区域和吸收波长λ的光的吸收区域,具有第一和第二状态的吸收区域,吸收比第二状态更少的波长λ的光的第一状态, 吸收区域的状态由耦合到吸收区域的电信号决定。 增益区域提供补偿第一状态下的光吸收的增益。 在一个实施例中,当吸收区域处于第二状态时,波导和谐振器被严格耦合。
    • 12. 发明授权
    • Near planar native-oxide VCSEL devices and arrays using converging oxide
ringlets
    • 近平面自然氧化物VCSEL器件和使用会聚氧化物小环的阵列
    • US5896408A
    • 1999-04-20
    • US911708
    • 1997-08-15
    • Scott W. CorzineRichard P. Schneider, Jr.Michael R. T. Tan
    • Scott W. CorzineRichard P. Schneider, Jr.Michael R. T. Tan
    • H01S5/00H01S5/183H01S5/42H01S3/19H01L21/20H01S3/08
    • H01S5/18313H01S5/2086H01S5/423
    • A VCSEL with a near planar top surface on which the top electrode is deposited. A VCSEL according to the present invention includes a top electrode, a top mirror having a top surface, a light generation region, and a bottom mirror for reflecting light toward the top mirror. At least one of the mirrors includes a plurality of planar electrically conducting layers having different indices of refraction. In addition, at least one of the layers includes an oxidizable material. To expose this layer to an oxidizing agent (thereby converting the material to an electrical insulator), three or more holes are etched down from the top surface of the VCSEL to the layer containing the oxidizable material. The oxidizing agent is then introduced into the top of these holes. The partial oxidation of the layer converts the layer to one having a conducting region surrounded by an electrically insulating region, the conducting region being positioned under the top electrode.
    • 具有近平面顶表面的VCSEL,其上沉积有顶电极。 根据本发明的VCSEL包括顶电极,具有顶表面的上反射镜,光产生区域和用于向上反射镜反射光的底镜。 至少一个反射镜包括具有不同折射率的多个平面导电层。 此外,至少一层包括可氧化材料。 为了将该层暴露于氧化剂(从而将材料转化为电绝缘体),从VCSEL的顶表面向包含可氧化材料的层蚀刻三个或更多个孔。 然后将氧化剂引入这些孔的顶部。 该层的部分氧化将该层转变为具有由电绝缘区域包围的导电区域的层,该导电区域位于顶部电极之下。
    • 14. 发明授权
    • Vertical-cavity surface-emitting laser generating light with a defined
direction of polarization
    • 垂直腔表面发射激光产生具有确定的极化方向的光
    • US5727014A
    • 1998-03-10
    • US551302
    • 1995-10-31
    • Shih-Yuan WangMichael R. T. TanWilliam D. HollandJohn P. ErtelScott W. Corzine
    • Shih-Yuan WangMichael R. T. TanWilliam D. HollandJohn P. ErtelScott W. Corzine
    • H01S5/00H01S5/183H01S5/30H01S5/42H01S3/19
    • H01S5/18355H01S5/18308H01S5/18338H01S5/18394H01S5/3054H01S5/3095H01S5/423
    • A vertical-cavity surface-emitting laser that generates light having a fixed direction of polarization. The laser has a plane light-generating region sandwiched between a first conductive mirror region and a second conductive mirror region. The first conductive mirror region has an opposite conductivity mode from the second conductive mirror region. The first conductive mirror region has a remote surface substantially parallel to the light-generating region and an electrode formed on the remote surface. The electrode bounds a light emission port from which the light is emitted in a direction defining an axis. A reduced-conductivity region is formed in the first conductive mirror region surrounding the axis and extending from the remote surface towards the light-emitting region to define a core region in the first conductive mirror region. The light emission port and/or the core region has first and second dimensions in orthogonal directions in a plane parallel to the light-generating region. The first dimension is greater than the second dimension to set the direction of polarization of the light to the direction of the first dimension.
    • 产生具有固定的偏振方向的光的垂直腔表面发射激光器。 激光器具有夹在第一导电镜区域和第二导电镜面区域之间的平面发光区域。 第一导电镜区域具有与第二导电镜区域相反的导电模式。 第一导电镜区域具有基本上平行于发光区域的远程表面和形成在远程表面上的电极。 电极在限定轴线的方向上限定发光的发光口。 导电区域形成在围绕轴线的第一导电反射镜区域中,并从远程表面朝向发光区域延伸以在第一导电反射镜区域中限定芯区域。 发光端口和/或芯区域在与发光区域平行的平面中具有正交方向上的第一和第二尺寸。 第一尺寸大于第二尺寸以将光的偏振方向设置为第一尺寸的方向。
    • 16. 发明授权
    • N-drive or P-drive VCSEL array
    • N驱动或P驱动VCSEL阵列
    • US6069908A
    • 2000-05-30
    • US20724
    • 1998-02-09
    • Albert T. YuenMichael R. T. TanChun Lei
    • Albert T. YuenMichael R. T. TanChun Lei
    • H01S5/00H01S5/02H01S5/042H01S5/183H01S5/187H01S5/42H01S3/19
    • H01S5/183H01S5/423H01S5/0208H01S5/0422
    • A VCSEL that is adapted to the fabrication of an array of VCSELs. A VCSEL array according to the present invention includes first and second VCSELs for generating light of a predetermined wavelength. Each VCSEL includes a bottom reflector comprising an epitaxial layer of a semiconductor of a first conductivity type, a light generation region and a top reflector comprising a semiconductor of a second conductivity type. A bottom electrode is electrically connected to the bottom reflector, and a top electrode is electrically connected to the top reflector. The bottom electrode is grown on top of a buffer layer having an electrical conductivity less than a predetermined value and a crystalline structure that permits epitaxial growth of the bottom reflector on the buffer layer. The buffer layer may be grown on top of a substrate or be the substrate itself in the case in which a substrate having sufficiently low conductivity is utilized. The bottom reflector of each of the VCSELs is in contact with the top of the buffer layer. The first and second VCSELs are electrically isolated from one another by a trench extending into the buffer layer. The buffer layer is constructed from a material having resistivity that is sufficiently low to prevent cross-talk between the first and second VCSELs.
    • 适用于制造VCSEL阵列的VCSEL。 根据本发明的VCSEL阵列包括用于产生预定波长的光的第一和第二VCSEL。 每个VCSEL包括底部反射器,其包括第一导电类型的半导体的外延层,发光区域和包括第二导电类型的半导体的顶部反射器。 底部电极电连接到底部反射器,并且顶部电极电连接到顶部反射器。 底部电极生长在具有小于预定值的电导率的缓冲层的顶部上,并且允许底部反射器在缓冲层上外延生长的晶体结构。 在使用具有足够低的导电性的基板的情况下,可以在衬底的顶部生长缓冲层或者作为衬底本身。 每个VCSEL的底部反射器与缓冲层的顶部接触。 第一和第二VCSEL通过延伸到缓冲层中的沟槽彼此电隔离。 缓冲层由具有足够低的电阻率的材料构成,以防止第一和第二VCSEL之间的串扰。
    • 17. 发明授权
    • N-drive, p-common light-emitting devices fabricated on an n-type
substrate and method of making same
    • 在n型衬底上制造的N驱动p普通发光器件及其制造方法
    • US5892787A
    • 1999-04-06
    • US635838
    • 1996-04-22
    • Michael R. T. TanAlbert T. YuenShih-Yuan WangGhulam HasnainYu-Min Houng
    • Michael R. T. TanAlbert T. YuenShih-Yuan WangGhulam HasnainYu-Min Houng
    • H01S5/00H01L33/00H01L33/30H01S5/042H01S5/183H01S5/30H01S5/42H01S3/19
    • H01L33/30H01L33/0016H01L33/0062H01S5/18308H01S5/0207H01S5/0421H01S5/18305H01S5/2059H01S5/2063H01S5/3054H01S5/3095H01S5/423
    • A substantially n-type substrate structure having a p-type surface for use in semiconductor devices as a substitute for a p-type semiconductor substrate. The substrate structure comprises a substrate region and a buffer region. The substrate region is a region of n-type compound semiconductor, and includes a degeneratively n-doped portion adjacent its first surface. The buffer region is a region of compound semiconductor doped with a p-type dopant. The buffer region is located on the first surface of the substrate region and includes a surface remote from the substrate region that provides the p-type surface of the substrate structure. The buffer region also includes a degeneratively p-doped portion adjacent the degeneratively n-doped portion of the substrate region. The substrate structure includes a tunnel junction between the degeneratively n-doped portion of the substrate region and the degeneratively p-doped portion of the buffer region. The substrate structure is made by degeneratively doping a substrate region of n-type compound semiconductor material adjacent its first surface with an n-type impurity, and depositing a layer of compound semiconductor material doped with a p-type impurity on the first surface of the substrate region to form a buffer region that includes a surface remote from the substrate region. In the course of depositing the compound semiconductor material to form the buffer region, the compound semiconductor material is degeneratively doped with the p-type impurity at least in a portion adjacent the substrate region to form a tunnel junction between the substrate region and the buffer region.
    • 具有用于半导体器件的p型表面作为p型半导体衬底的替代物的基本为n型衬底结构。 衬底结构包括衬底区域和缓冲区域。 衬底区域是n型化合物半导体的区域,并且包括与其第一表面相邻的退化的n-掺杂部分。 缓冲区是掺杂有p型掺杂剂的化合物半导体的区域。 缓冲区域位于衬底区域的第一表面上并且包括远离衬底区域的表面,该表面提供衬底结构的p型表面。 缓冲区还包括与衬底区域的退化的n掺杂部分相邻的退化的p掺杂部分。 衬底结构包括在衬底区域的退化的n掺杂部分和缓冲区域的退化的p掺杂部分之间的隧道结。 衬底结构是通过用n型杂质将邻近其第一表面的n型化合物半导体材料的衬底区域简单地掺杂制成的,并且在第一表面上沉积掺杂有p型杂质的化合物半导体材料层 衬底区域以形成包括远离衬底区域的表面的缓冲区域。 在沉积化合物半导体材料以形成缓冲区的过程中,化合物半导体材料至少在与衬底区域相邻的部分中被p型杂质退变掺杂以在衬底区域和缓冲区域之间形成隧道结 。