中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

198 records (took 0.051 seconds)

    OPTICAL MODULATOR
    72.
    发明申请
    OPTICAL MODULATOR 审中-公开

    公开(公告)号：US20170336696A1

    公开(公告)日：2017-11-23

    申请号：US15528874

    申请日：2015-12-08

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Ken Tsuzuki ,  Shin Kamei ,  Makoto Jizodo

    IPC: G02F1/225 ,  G02F1/21

    CPC classification number: G02F1/2257 ,  G02F1/025 ,  G02F2001/212 ,  G02F2201/063 ,  G02F2201/127

    Abstract: The present invention provides an optical modulator including a substrate and a phase modulation portion on the substrate. The phase modulation portion includes an optical waveguide comprised of a first clad layer, a semiconductor layer that is laminated on the first clad layer and has a refraction index higher than the first clad layer and a second clad layer that is laminated on the semiconductor layer and has a refraction index lower than the semiconductor layer, a first traveling wave electrode, and a second traveling wave electrode. The semiconductor layer includes a rib that is formed in the optical waveguide in an optical axis direction and is a core of the optical waveguide, a first slab that is formed in the optical axis direction in one side of the rib, a second slab that is formed in the optical axis direction in the other side of the rib, a third slab that is formed in the first slab in the optical axis direction at the opposite side to the rib, and a fourth slab that is formed in the second slab in the optical axis direction at the opposite side to the rib. The first slab is formed to be thinner than the rib and the third slab, and the second slab is formed to be thinner than the rib and the fourth slab.

    Optical system with band gap tuning
    73.
    发明授权
    Optical system with band gap tuning 有权

    公开(公告)号：US09804425B1

    公开(公告)日：2017-10-31

    申请号：US15299214

    申请日：2016-10-20

    Applicant: Kelvin Prosyk

    Inventor： Kelvin Prosyk

    IPC: G02F1/025 ,  G02F1/01 ,  G02F1/225 ,  G02F1/21

    CPC classification number: G02F1/025 ,  G02F1/0123 ,  G02F1/0147 ,  G02F1/2257 ,  G02F2001/212 ,  G02F2201/127 ,  G02F2203/60

    Abstract: A method for operating an optical system may include selecting a band gap energy level for an optical waveguide in an electro-optic modulator. The band gap energy level may correspond to a predetermined phase shift efficiency of a waveguide electrode coupled to the optical waveguide. The method may further include generating, across a conductive plane in the electro-optic modulator, a differential voltage that produces a predetermined temperature in a waveguide core of the optical waveguide. The predetermined temperature may correspond to the band gap energy level selected for the optical waveguide. The method may further include transmitting, through the optical waveguide and with a modulating voltage applied by the waveguide electrode, an optical wave to an optical wave combiner. The modulating voltage may produce an amount of phase shift in the optical wave at the predetermined phase shift efficiency.

    Electro-optic grating modulator
    74.
    发明授权
    Electro-optic grating modulator 有权
    电光栅调制器

    公开(公告)号：US09335568B1

    公开(公告)日：2016-05-10

    申请号：US13151510

    申请日：2011-06-02

    Applicant: Daniel Yap ,  Oleg M. Efimov ,  James H. Schaffner

    Inventor： Daniel Yap ,  Oleg M. Efimov ,  James H. Schaffner

    IPC: G02F1/01 ,  G02F1/035 ,  G02F1/065

    CPC classification number: G02F1/011 ,  G02F1/0356 ,  G02F1/065 ,  G02F2201/127 ,  G02F2201/307

    Abstract: An optical-waveguide grating modulator is compatible with high-frequency electrical modulation signals of limited bandwidth. The modulator comprises an optical grating formed in an optical waveguide constructed from electro-optic (EO) material and an electrode that is an RF waveguide or RF transmission line that conducts a traveling-wave electromagnetic (EM) field and that contains a portion of the optical-grating waveguide with a continuous grating. The RF input modulation signal is coupled into an RF EM field that propagates through the RF waveguide or transmission line in a direction that is parallel to the direction the light propagates in the optical-grating waveguide and that EM field overlaps the optical-grating waveguide. The light travels along the optical-grating waveguide preferably at the same velocity as the RF EM field travels along the RF waveguide or transmission line.

    Abstract translation: 光波导光栅调制器与有限带宽的高频电调制信号兼容。 调制器包括形成在由电光（EO）材料构成的光波导中的光栅，以及作为传导行波电磁（EM）场的RF波导或RF传输线的电极，并且包含一部分 具有连续光栅的光栅波导。 RF输入调制信号被耦合到RF电场中，RF场通过RF波导或传输线在与光栅波导中传播的光的方向平行的方向上传播，并且EM场与光栅波导重叠。 光沿着光栅波导优选以与RF EM场沿着RF波导或传输线行进的速度相同的速度行进。

    Mach-zehnder optical modulator having an asymmetrically-loaded traveling wave electrode
    76.
    发明授权
    Mach-zehnder optical modulator having an asymmetrically-loaded traveling wave electrode 有权
    具有不对称负载的行波电极的马赫 - 泽德光调制器

    公开(公告)号：US09008469B2

    公开(公告)日：2015-04-14

    申请号：US14075854

    申请日：2013-11-08

    Applicant: Teraxion Inc.

    Inventor： Kelvin Prosyk

    IPC: G02F1/035 ,  G02F1/225

    CPC classification number: G02F1/225 ,  G02F1/2257 ,  G02F2201/127

    Abstract: A Mach-Zehnder optical modulator with a travelling wave electrode has a signal transmission line conductor (S) carrying an input electrical signal, and two ground transmission line conductors (G1 and G2) providing a return path for the electrical signal. The signal transmission line conductor is positioned between the first and second ground lines, and the first and second optical waveguide branches are positioned between the signal transmission line conductor and the first ground line. The modulator therefore has a GSG structure providing an asymmetrically-loaded configuration.

    Abstract translation: 具有行波电极的马赫 - 策德尔光调制器具有承载输入电信号的信号传输线导体（S）和提供电信号返回路径的两个接地传输线导体（G1和G2）。 信号传输线导体位于第一和第二接地线之间，第一和第二光波导分支位于信号传输线导体和第一接地线之间。 因此，调制器具有提供非对称加载配置的GSG结构。

    Optical modulator module and method for modulating optical signal
    77.
    发明授权
    Optical modulator module and method for modulating optical signal 有权
    光调制器模块及光信号调制方法

    公开(公告)号：US08744219B2

    公开(公告)日：2014-06-03

    申请号：US13436145

    申请日：2012-03-30

    Applicant: Tomoaki Kato

    Inventor： Tomoaki Kato

    IPC: G02F1/035

    CPC classification number: G02F1/0327 ,  G02F2201/127 ,  G02F2201/16 ,  H04B10/556

    Abstract: The present invention provides a compact, broad-band, and low-drive-voltage optical modulator module capable of generating any multilevel optical modulation. The optical modulator module according to an exemplary aspect of the present invention includes a digital segmented electrode structure optical modulator and m individual driving circuits. The digital segmented electrode structure optical modulator includes semiconductor optical waveguides and at least m waveguide-type optical phase modulator regions. An i-th individual driving circuit includes a driving circuit and a phase shift circuit. The driving circuit amplifies a digital input signal in synchronization with a clock signal and outputs the signal to an i-th waveguide-type optical phase modulator region. The phase shift circuit applies a delay to a signal branched from the clock signal. A j-th individual driving circuit receives an output signal from the phase shift circuit of a (j−1)-th individual driving circuit as a clock signal.

    Abstract translation: 本发明提供了能够产生任何多电平光调制的紧凑的宽带和低驱动电压光调制器模块。 根据本发明的示例性方面的光调制器模块包括数字分段电极结构光调制器和m个单独的驱动电路。 数字分段电极结构光调制器包括半导体光波导和至少m个波导型光相位调制器区域。 第i个个体驱动电路包括驱动电路和相移电路。 驱动电路与时钟信号同步放大数字输入信号，并将该信号输出到第i个波导型光相位调制器区域。 相移电路对从时钟信号分支的信号施加延迟。 第j个人驱动电路作为时钟信号接收来自第（j-1）个人驱动电路的相移电路的输出信号。

    Electrooptical high-index contrast waveguide component
    78.
    发明授权
    Electrooptical high-index contrast waveguide component 有权
    电光高折射率对比度波导部件

    公开(公告)号：US08081851B2

    公开(公告)日：2011-12-20

    申请号：US12442176

    申请日：2007-09-14

    Applicant: Christian Koos ,  Jurg Leuthold ,  Wolfgang Freude ,  Jan Michael Brosi

    Inventor： Christian Koos ,  Jurg Leuthold ,  Wolfgang Freude ,  Jan Michael Brosi

    IPC: G02F1/035 ,  G02B6/00

    CPC classification number: G02F1/011 ,  G02F1/025 ,  G02F1/0316 ,  G02F1/065 ,  G02F2201/127 ,  G02F2202/104

    Abstract: A high-index contrast waveguide component is presented, which is based on the fast changing of the transmission properties of an optical waveguide by applying electric voltages, or by embossing electric currents. The waveguide consists of a high-refractive waveguide core surrounded by a low-refractive surrounding material, which at least area by area has electro-optical properties. By applying a voltage to completely or partially optically transparent electrodes, an electric field is generated having a strong overlap with the optical mode, being in interaction with it, and therefore changing the transmission properties of the waveguide. The transparent electrodes or supply line areas are laminar, connected at low resistance with conductor paths of high conductivity by means of structures continually repeated along the propagation direction. Thus, it is possible for example to very fast load the capacity being effective between the electrodes, and to thus achieve a high electric band width. In certain embodiments, the waveguide core itself consists of one or more electrically conductive stripes being used as electrodes at the same time. These embodiments make especially small switching voltages possible.For example, the presented component makes fast electro-optical modulators with small switching voltages possible, which modulators may be integrated together with electronic components on a common semiconductor substrate (e.g. silicon).

    Abstract translation: 提出了一种高折射率对比度波导部件，其基于通过施加电压或通过压花电流快速改变光波导的传输特性。 波导包括由低折射周围材料包围的高折射波导芯，该低折射波导芯至少面积具有电光性质。 通过对完全或部分光学透明的电极施加电压，产生与光学模式强烈重叠的电场，与其相互作用，因此改变波导的透射特性。 透明电极或电源线区域是层状的，通过沿着传播方向连续重复的结构以低电阻连接导电路径高导电性。 因此，例如，可以非常快速地加载在电极之间有效的容量，从而实现高电带宽度。 在某些实施例中，波导芯本身由同时用作电极的一个或多个导电条构成。 这些实施例使得特别小的开关电压成为可能。 例如，所提出的组件使得具有小开关电压的快速电光调制器成为可能，这些调制器可以与公共半导体衬底（例如硅）上的电子部件集成在一起。

Patent Agency Ranking