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47 条记录 (耗时 0.03 秒)

    Optical modulator
    31.
    发明授权
    Optical modulator 有权
    光调制器

    公开(公告)号：US06768570B2

    公开(公告)日：2004-07-27

    申请号：US10369755

    申请日：2003-02-21

    申请人： Masaki Sugiyama ,  Tadao Nakazawa

    发明人： Masaki Sugiyama ,  Tadao Nakazawa

    IPC分类号： G02B2600

    CPC分类号： G02F1/0356

    摘要： Desired characteristic impedance can be obtained in an optical modulator. The optical modulator includes a substrate having the electrooptic effect; an optical waveguide formed on a surface of the substrate; and a signal electrode and a ground electrode formed in the vicinity of the optical waveguide, wherein the signal electrode and the ground electrode include an interaction portion and an extraction portion, and a groove is formed between the signal electrode and the ground electrode located in the extraction portion area.

    摘要翻译： 可以在光调制器中获得期望的特性阻抗。 光调制器包括具有电光效应的基片; 形成在所述基板的表面上的光波导; 以及形成在光波导附近的信号电极和接地电极，其中信号电极和接地电极包括相互作用部分和提取部分，并且在信号电极和位于 提取部分区域。

    Optical modulator
    32.
    发明授权
    Optical modulator 有权

    公开(公告)号：US06678428B2

    公开(公告)日：2004-01-13

    申请号：US09966600

    申请日：2001-10-01

    申请人： Minoru Seino ,  Tetsuo Ishizaka ,  Takehito Tanaka ,  Masaharu Doi ,  Tadao Nakazawa

    发明人： Minoru Seino ,  Tetsuo Ishizaka ,  Takehito Tanaka ,  Masaharu Doi ,  Tadao Nakazawa

    IPC分类号： G02F1035

    CPC分类号： G02F1/2255

    摘要： The present invention relates to an optical modulator allowing appropriate interaction between signal electrodes and an optical waveguide, only by matching phases at input ends of the signal electrodes. The optical modulator includes an optical waveguide with its center part branched into two at two Y-branch waveguides, forming first and second waveguide arms, a first signal electrode transmitting a first electric signal interacting with first light propagating through the first waveguide arm in a predetermined manner, a second signal electrode transmitting a second electric signal interacting with second light propagating through the second waveguide arm in a predetermined manner, and earthed electrodes, and can match the interacting timing between the first electric signal and the first light to the interacting timing between the second electric signal and the second light, at a first input end supplying the first electric signal and a second input end supplying the second electric signal.

    Optical device having thin film formed over optical waveguide
    33.
    发明授权
    Optical device having thin film formed over optical waveguide 失效
    具有形成在光波导上的薄膜的光学器件

    公开(公告)号：US06400881B1

    公开(公告)日：2002-06-04

    申请号：US09118936

    申请日：1998-07-20

    申请人： Minoru Seino ,  Tadao Nakazawa ,  Shinji Taniguchi

    发明人： Minoru Seino ,  Tadao Nakazawa ,  Shinji Taniguchi

    IPC分类号： G02B600

    CPC分类号： G02F1/125 ,  G02B6/125 ,  G02F2001/0142 ,  G02F2001/212 ,  G02F2203/055

    摘要： An optical device has a substrate, a polarization beam splitter, first and second pairs of optical waveguides, a transducer and a thin film. The polarization beam splitter is formed on the substrate and has input and output sides. The first and second pairs of optical waveguides are formed on the substrate to guide polarized optical signals. The first pair of optical waveguides meets at the input side of the polarization beam splitter, and the second pair of optical waveguides meets at the output side of the polarization beam splitter. The transducer is formed of a comb-tooth electrode on the substrate to excite a surface acoustic wave on the substrate and rotate the polarization of the optical signal. The thin film covers a portion of each waveguide of either the first or second pairs of optical waveguides. The thin film may be formed of silicon dioxide or indium dioxide, either with a metal oxide optionally added thereto. The speed of sound in the thin film is less than that in the substrate. The thin film is formed of a material which is transparent to the optical signal. The thin film has a refractive index smaller than that of the optical waveguides.

    摘要翻译： 光学器件具有衬底，偏振分束器，第一和第二对光波导，换能器和薄膜。 偏振分束器形成在基板上并具有输入和输出侧。 第一和第二对光波导形成在基板上以引导偏振光信号。 第一对光波导在偏振分束器的输入侧相交，第二对光波导在偏振分束器的输出侧相交。 传感器由基板上的梳齿电极形成，以激发基板上的声表面波，并旋转光信号的极化。 薄膜覆盖第一或第二对光波导对的每个波导的一部分。 薄膜可以由二氧化硅或二氧化铟形成，或者与任选地添加的金属氧化物形成。 薄膜中的声音速度小于衬底中的声速。 薄膜由对光信号透明的材料形成。 薄膜的折射率小于光波导的折射率。

    Optical waveguide device
    34.
    发明授权
    Optical waveguide device 失效
    光波导器件

    公开(公告)号：US5680497A

    公开(公告)日：1997-10-21

    申请号：US350894

    申请日：1994-12-07

    申请人： Minoru Seino ,  Tadao Nakazawa ,  Takashi Yamane ,  Yoshinobu Kubota ,  Masaharu Doi ,  Kunio Sugeta ,  Teruo Kurahashi

    发明人： Minoru Seino ,  Tadao Nakazawa ,  Takashi Yamane ,  Yoshinobu Kubota ,  Masaharu Doi ,  Kunio Sugeta ,  Teruo Kurahashi

    IPC分类号： G02B6/12 ,  G02F1/01 ,  G02F1/035 ,  G02B6/10

    CPC分类号： G02F1/035 ,  G02F1/0123 ,  G02F2201/07 ,  G02F2203/21

    摘要： This invention aims at providing an optical waveguide device capable of stably operating for an extended period of time. The optical waveguide device comprises an optical waveguide path formed inside a surface of an electro-optical substrate, a buffer layer formed on the optical waveguide path, and a driving electrode for impressing an electric field so as to change a refractive index of the optical waveguide path, wherein the buffer layer is made of a transparent dielectric or insulator of a mixture between silicon dioxide and an oxide of at least one element selected from the group consisting of the metal elements of the Groups III to VIII, Ib and IIb of the Periodic Table and semiconductor elements other than silicon, or a transparent dielectric or insulator of an oxide between silicon and at least one of the metal elements and semiconductor elements described above.

    摘要翻译： 本发明的目的在于提供能够长时间稳定运行的光波导装置。 光波导装置包括形成在电光基板的表面内的光波导路径，形成在光波导路径上的缓冲层，以及用于施加电场以驱动光波导的折射率的驱动电极 路径，其中所述缓冲层由二氧化硅和至少一种元素的氧化物之间的混合物的透明电介质或绝缘体制成，所述至少一种元素选自元素周期表III-VIII，Ib和IIb族的金属元素 除了硅之外的表格和半导体元件，或硅与至少一个上述金属元件和半导体元件之间的氧化物的透明电介质或绝缘体。

    Optical waveguide device and optical modulator
    36.
    发明授权
    Optical waveguide device and optical modulator 有权
    光波导器件和光调制器

    公开(公告)号：US07340114B2

    公开(公告)日：2008-03-04

    申请号：US10345938

    申请日：2003-01-17

    申请人： Masaharu Doi ,  Masaki Sugiyama ,  Tadao Nakazawa

    发明人： Masaharu Doi ,  Masaki Sugiyama ,  Tadao Nakazawa

    IPC分类号： G02F1/035

    CPC分类号： G02F1/225 ,  G02F1/0123 ,  G02F2201/16 ,  G02F2203/21

    摘要： An optical waveguide device includes a substrate having an electro-optical effect, an optical waveguide formed on the substrate, an electrode provided for the optical waveguide, a monitoring optical waveguide for guiding part of light outputted from the optical waveguide as monitor light, an attenuation section provided for the monitoring optical waveguide for attenuating the monitor light, and a light detection section for detecting the intensity of the monitor light guided by the monitoring optical waveguide and attenuated by the attenuation section.

    摘要翻译： 光波导器件包括具有电光效应的基板，形成在基板上的光波导，设置在光波导上的电极，用于引导从光波导输出的光的一部分作为监视光的监视光波导，衰减 以及光检测部，用于检测由监视光波导引导并被衰减部衰减的监视光的强度。

    Acousto-optic device and fabrication method of acousto-optic device
    37.
    发明申请
    Acousto-optic device and fabrication method of acousto-optic device 失效
    声光装置的声光装置及其制造方法

    公开(公告)号：US20070189655A1

    公开(公告)日：2007-08-16

    申请号：US11723936

    申请日：2007-03-22

    申请人： Hiroshi Miyata ,  Yukito Tsunoda ,  Tadao Nakazawa ,  Yumi Nakazawa

    发明人： Hiroshi Miyata ,  Yukito Tsunoda ,  Tadao Nakazawa ,  Yumi Nakazawa

    IPC分类号： G02F1/335

    CPC分类号： G02F1/125 ,  G02F1/116 ,  H03H9/02968 ,  H04J14/021

    摘要： An acousto-optic device is disclosed which can achieve both of suppression of secular change and prevention of device damage and can maintain a stabilized wavelength selection filtering operation. The acousto-optic device includes a substrate on which a SAW guide for guiding a surface acoustic wave and an optical waveguide for guiding an optical wave are provided. A pyro-electricity coping conductive wiring pattern is provided in a region of the substrate other than the SAW guide and neutralizes polarization charge generated on a surface of the substrate.

    摘要翻译： 公开了一种可以实现抑制长期变化和防止设备损坏的声光器件，并且可以保持稳定的波长选择滤波操作。 声光装置包括：基板，用于引导表面声波的SAW引导件和用于引导光波的光波导的基板。 在除了SAW引导件之外的基板的区域中设置热电承载导电布线图案，并且中和在基板的表面上产生的极化电荷。

    Optical device and drive voltage supply device
    40.
    发明申请
    Optical device and drive voltage supply device 失效
    光器件和驱动电源

    公开(公告)号：US20060126988A1

    公开(公告)日：2006-06-15

    申请号：US11085210

    申请日：2005-03-22

    申请人： Tadao Nakazawa ,  Yumi Nakazawa ,  Hiroshi Miyata ,  Yukito Tsunoda

    发明人： Tadao Nakazawa ,  Yumi Nakazawa ,  Hiroshi Miyata ,  Yukito Tsunoda

    IPC分类号： G02F1/035

    CPC分类号： G02F1/0353 ,  G02F2201/124

    摘要： The present invention is directed toward an optical device and a drive voltage supply device, which prevent occurrence of a d.c. drift and enable stable selection of light of desired wavelength without deteriorating a filtering characteristic. The optical device comprises a substrate having an electrooptical effect; an optical waveguide formed in this substrate; a plurality of comb electrode pairs which are arranged side by side along the optical waveguide, can apply an electric field for said electrooptical effect, and are formed from respective pairs of comb electrodes; and drive voltage supply means capable of supplying a drive voltage to said comb electrode pairs such that the voltage changes with time.

    摘要翻译： 本发明涉及一种光学装置和驱动电压供应装置，其防止发生直流。 漂移并使得能够稳定地选择所需波长的光，而不会降低滤波特性。 光学装置包括具有电光效应的基板; 在该衬底中形成的光波导; 沿着光波导并排布置的多个梳状电极对可以对所述电光效应用电场，并由各​​对梳状电极形成; 以及驱动电压供给装置，其能够向所述梳状电极对提供驱动电压，使得电压随时间而变化。