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    Waveguide mach-zehnder optical isolator utilizing transverse magneto-optical phase shift
    42.
    发明授权
    Waveguide mach-zehnder optical isolator utilizing transverse magneto-optical phase shift 失效
    使用横向磁光相移的波导马赫 - 泽德光隔离器

    公开(公告)号：US06943932B2

    公开(公告)日：2005-09-13

    申请号：US10240521

    申请日：2001-04-20

    Applicant: Junichiro Fujita ,  Miguel Levy ,  Richard M Osgood

    Inventor： Junichiro Fujita ,  Miguel Levy ,  Richard M Osgood

    IPC: G02B6/26 ,  G02F1/095 ,  G02F1/21 ,  G02F1/225 ,  G02F1/09

    CPC classification number: G02B6/2746 ,  G02F1/0955 ,  G02F1/225 ,  G02F2001/212 ,  G02F2201/063

    Abstract: A device and method for optical isolation for use in optical systems is disclosed. The device provides for a waveguide optical isolator fabricated using two arms, made of optical waveguides comprising magneto-optical material, in a Mach-Zehnder interferometer configuration. The device of the present invention operates using the TM mode of a light wave and, thus, does not require phase-matching of TM and TE modes. Further, the present invention does not use polarizers to extinguish the optical feed-back.

    Abstract translation: 公开了一种用于光学系统中的用于光隔离的装置和方法。 该装置提供了使用由Mach-Zehnder干涉仪配置构成的包括磁光材料的光波导制成的两个臂制造的波导光隔离器。 本发明的装置使用光波的TM模式进行操作，因此不需要TM和TE模式的相位匹配。 此外，本发明不使用偏振器来熄灭光学反馈。

    Method and apparatus for isolating an active region in an optical waveguide
    45.
    发明申请
    Method and apparatus for isolating an active region in an optical waveguide 有权
    用于隔离光波导中的有源区的方法和装置

    公开(公告)号：US20050123260A1

    公开(公告)日：2005-06-09

    申请号：US10731559

    申请日：2003-12-09

    Applicant: Ansheng Liu ,  Mario Paniccia

    Inventor： Ansheng Liu ,  Mario Paniccia

    IPC: G02F1/025 ,  G02B6/10 ,  G02F1/035

    CPC classification number: G02F1/025 ,  G02F2201/063

    Abstract: An apparatus and method for modulating a phase of optical beam in an electrically isolated active region of an optical waveguide. In one embodiment, an apparatus according to embodiments of the present invention includes an active region of an optical waveguide disposed in a semiconductor layer. The active region includes a p doped region and an n doped region. The apparatus further includes an insulating region disposed in the semiconductor layer surrounding the active region in the semiconductor layer. The insulating region electrically isolates the active region of the optical waveguide from a passive region of the optical waveguide disposed in the semiconductor layer. An optical beam is to be directed through the optical waveguide and through the active region to be phase shifted in response to a modulated charge region in the active region in the optical waveguide.

    Abstract translation: 一种用于调制光波导的电隔离有源区中的光束相位的装置和方法。 在一个实施例中，根据本发明的实施例的装置包括设置在半导体层中的光波导的有源区。 有源区包括p掺杂区和n掺杂区。 该装置还包括设置在半导体层中的绝缘区域，该半导体层围绕半导体层中的有源区域。 绝缘区域将光波导的有源区域与设置在半导体层中的光波导的无源区域电隔离。 光束将被引导通过光波导并且通过有源区域响应于光波导中的有源区域中的调制的电荷区域被相移。

    Electro-optic device
    47.
    发明授权
    Electro-optic device 有权
    电光装置

    公开(公告)号：US06801702B2

    公开(公告)日：2004-10-05

    申请号：US09874999

    申请日：2001-06-07

    Applicant: Ian Edward Day

    Inventor： Ian Edward Day

    IPC: G02B610

    CPC classification number: G02F1/025 ,  G02F2201/063 ,  G02F2201/122 ,  G02F2202/06 ,  G02F2202/105

    Abstract: An electro-optic device is disclosed for altering the density of charge carriers within an integrated optical waveguide. The device includes a substrate, and an integrated optical waveguide extending across the substrate with two doped regions being provided such that an electrical signal can be applied across the doped regions to alter the density of charge carriers within the waveguide. The doped regions can each include a plurality of doped areas spaced apart from each other along the length of the waveguide.

    Abstract translation: 公开了一种用于改变集成光波导内的电荷载流子密度的电光器件。 该器件包括衬底和跨越衬底延伸的集成光波导，其中提供两个掺杂区域，使得可以跨越掺杂区域施加电信号以改变波导内的电荷载流子的密度。 掺杂区域可以各自包括沿着波导的长度彼此间隔开的多个掺杂区域。

    Waveguide mach-zehnder optical isolator utilizing transverse magneto-optical phase shift
    48.
    发明申请
    Waveguide mach-zehnder optical isolator utilizing transverse magneto-optical phase shift 失效
    使用横向磁光相移的波导马赫 - 泽德光隔离器

    公开(公告)号：US20040047531A1

    公开(公告)日：2004-03-11

    申请号：US10240521

    申请日：2003-06-30

    Inventor： Junichiro Fujita ,  Miguel Levy ,  Richard M Osgood

    IPC: G02B006/00 ,  G02F001/153

    CPC classification number: G02B6/2746 ,  G02F1/0955 ,  G02F1/225 ,  G02F2001/212 ,  G02F2201/063

    Abstract: A device and method for optical isolation for use in optical systems is disclosed. The device provides for a waveguide optical isolator fabricated using two arms, made of optical waveguides comprising magneto-optical material, in a Mach-Zehnder interferometer configuration. The device of the present invention operates using the TM mode of a light wave and, thus, does not require phase-matching of TM and TE modes. Further, the present invention does not use polarizers to extinguish the optical feedback.

    Abstract translation: 公开了一种用于光学系统中的用于光隔离的装置和方法。 该装置提供了使用由Mach-Zehnder干涉仪配置构成的包括磁光材料的光波导制成的两个臂制造的波导光隔离器。 本发明的装置使用光波的TM模式进行操作，因此不需要TM和TE模式的相位匹配。 此外，本发明不使用偏振器来熄灭光学反馈。

    Bent electro-absorption modulator
    49.
    发明申请
    Bent electro-absorption modulator 审中-公开

    公开(公告)号：US20030123772A1

    公开(公告)日：2003-07-03

    申请号：US10323816

    申请日：2002-12-20

    Applicant: Danmarks Tekniske Universitet

    Inventor： Svend Bischoff ,  Peter M. W. Skovgaard

    IPC: G02F001/035 ,  G02F001/025

    CPC classification number: B82Y20/00 ,  G02F1/01708 ,  G02F1/01716 ,  G02F2001/0151 ,  G02F2001/0157 ,  G02F2201/063 ,  G02F2203/026

    Abstract: The present invention relates to a method and a device for modulating optical signals based on modulating bending losses in bend, quantum well semiconductor waveguide sections. The complex refractive index of the optical active semiconducting components of the waveguide section is modulated by applying a variable electric or electromagnetic field. The modulation of the complex refractive index results in a modulation of the refractive index contrast and the absorption coefficient for the waveguide at the frequency of the light. By carefully adjusting the composition of the semiconducting components and the applied electric field in relation to the frequency of the modulated radiation, the bending losses (and possibly coupling losses) will provide extinction of light guided by the bent waveguide section. The refractive index contrast may be modulated while keeping the absorption coefficient substantially constant and small, whereby the guided light can be modulated only by bending losses. Alternatively, the invention may be applied to enhance the extinction ratio of existing absorption modulators such as Electro-Absorption Modulators (EAMs) in which case extinction by absorption and extinction by bending losses co-operates to provide more compact modulators with improved performance (extinction) and speed.

    Electro-absorption modulator and method of manufacturing a semiconductor optical device
    50.
    发明授权
    Electro-absorption modulator and method of manufacturing a semiconductor optical device 有权
    电吸收式调制器及其制造方法

    公开(公告)号：US06343163B1

    公开(公告)日：2002-01-29

    申请号：US09527393

    申请日：2000-03-16

    Applicant: Hidekazu Kawanishi

    Inventor： Hidekazu Kawanishi

    IPC: G02F1035

    CPC classification number: H01S5/026 ,  G02F1/025 ,  G02F2201/063 ,  G02F2201/122 ,  H01S5/0265 ,  H01S5/0425 ,  H01S5/06258

    Abstract: An electro-absorption modulator is rendered capable of withstanding increased optical input power by one of the following means: incorporating a heat sink into the electro-absorption modulator structure to conduct heat away from the optical waveguide; incorporating a resistive member into the upper electrode of the electro-absorption modulator, producing a voltage drop that reduces absorption near the optical input end of the waveguide; making the bandgap energy of the absorbing layer of the waveguide higher at the optical input end than at the optical output end; and placing the electrode pad of the upper electrode near the optical input end.

    Abstract translation: 电吸收调制器能够通过以下方法之一承受增加的光输入功率：将散热器结合到电吸收调制器结构中以将热量从光波导传导出去; 将电阻构件结合到电吸收调制器的上电极中，产生降低在波导的光输入端附近的吸收的电压降; 使波导吸收层的带隙能量在光输入端高于光输出端; 并将上电极的电极焊盘放置在光输入端附近。

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