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    ACOUSTO-OPTICAL DEVICE
    151.
    发明申请
    ACOUSTO-OPTICAL DEVICE 失效

    公开(公告)号：US20020021853A1

    公开(公告)日：2002-02-21

    申请号：US09106260

    申请日：1998-06-29

    Inventor： TADAO NAKAZAWA ,  MINORU SEINO ,  SHINJI TANIGUCHI

    IPC: G02F001/335

    CPC classification number: G02F1/125 ,  G02F2201/07

    Abstract: An acousto-optical device includes a light waveguide path formed on an acousto-optical substrate, a transducer which crosses the light waveguide path and propagates a surface acoustic wave along the light waveguide path, and a buffer layer provided so that finger electrodes of the transducer are spaced apart from the light waveguide path in crossing portions in which the finger electrodes cross the light waveguide path. The finger electrodes have other portions which directly contact the substrate.

    Abstract translation: 声光装置包括形成在声光基板上的光波导路径，穿过光波导路径并沿着光波导路径传播表面声波的换能器，以及设置成使得换能器的指状电极 在手指电极穿过光波导路径的交叉部分中与光波导路径间隔开。 手指电极具有直接接触衬底的其它部分。

    Velocity matching electrode structure for electro-optic modulators
    152.
    发明授权
    Velocity matching electrode structure for electro-optic modulators 失效
    电光调制器的速度匹配电极结构

    公开(公告)号：US06310700B1

    公开(公告)日：2001-10-30

    申请号：US09662554

    申请日：2000-09-15

    Applicant: Gary E. Betts

    Inventor： Gary E. Betts

    IPC: G02B636

    CPC classification number: B82Y10/00 ,  G02F1/2255 ,  G02F2201/07 ,  G02F2201/127

    Abstract: This is an electro-optic modulator having an electro-optic substrate such as lithium niobate, an optical waveguide defined within the substrate, an electrode structure including a microwave transmission line elevated from the substrate by conductive legs. In one embodiment, a low-dielectric constant buffer layer is disposed between the substrate and the transmission line. The conductive legs extend from the transmission line to a surface of the substrate toward the waveguide, through the buffer layer. The microwave transmission line is elevated from the substrate at a distance such that the electrical propagation velocity is at a maximum. The high electrical velocity is offset by a loading capacitance introduced by the conductive legs which slows the electrical velocity down on the transmission line to match the optical velocity. Pairs of opposing conductive legs provide a strong electric field for modulating the optical signal.

    Abstract translation: 这是一种电光调制器，其具有诸如铌酸锂之类的电光衬底，限定在衬底内的光波导，包括通过导电腿从衬底升高的微波传输线的电极结构。 在一个实施例中，低介电常数缓冲层设置在基板和传输线之间。 导电支腿通过缓冲层从传输线延伸到基板的表面朝向波导。 微波传输线从衬底以一定距离升高，使得电传播速度最大。 高电速通过由导电支路引入的负载电容来抵消，这使传输线上的电速降低以匹配光速。 一对相对的导电腿提供强电场来调制光信号。

    Velocity-matched traveling-wave electro-optical modulator using a benzocyclobutene buffer layer
    153.
    发明授权
    Velocity-matched traveling-wave electro-optical modulator using a benzocyclobutene buffer layer 失效
    使用苯并环丁烯缓冲层的速度匹配行波电光调制器

    公开(公告)号：US5895742A

    公开(公告)日：1999-04-20

    申请号：US683870

    申请日：1996-07-19

    Applicant: Jack Lin

    Inventor： Jack Lin

    IPC: G02F1/035 ,  G02F1/225 ,  G03C5/00

    CPC classification number: G02F1/0356 ,  G02F1/035 ,  G02F1/2255 ,  G02F2201/07

    Abstract: A method for use in fabricating an electro-optic structure on a substrate having an optical waveguide formed in an upper surface thereof, comprises the steps of forming a layer of organic dielectric material, such as a benzocyclobutene (BCB) resin, on the substrate upper surface, forming an interface layer on an upper surface of the organic dielectric layer, and forming an electrically isolated electrode on an upper surface of the interface layer such that an electrical field can be induced in the optical waveguide.

    Abstract translation: 一种用于在其上表面形成有光波导的基板上制造电光结构的方法，包括以下步骤：在衬底上形成诸如苯并环丁烯（BCB）树脂的有机介电材料层 在有机电介质层的上表面上形成界面层，在界面层的上表面上形成电隔离的电极，使得能够在光波导中感应出电场。

    Optical waveguide device including a buffer layer of a thickness inwardly decreasing from each waveguide edge
    154.
    发明授权
    Optical waveguide device including a buffer layer of a thickness inwardly decreasing from each waveguide edge 失效
    光波导器件包括从每个波导边缘向内减小的厚度的缓冲层

    公开(公告)号：US5764822A

    公开(公告)日：1998-06-09

    申请号：US784929

    申请日：1997-01-16

    Applicant: Rangaraj Madabhushi

    Inventor： Rangaraj Madabhushi

    IPC: G02F1/035 ,  G02B6/12 ,  G02F1/225

    CPC classification number: G02F1/2255 ,  G02B2006/12142 ,  G02B2006/12145 ,  G02F2201/07

    Abstract: In an optical waveguide device which is typically for use as a waveguide modulator or switch and comprises a substrate exhibiting an electrooptic effect, an input and an output waveguide, first and second phase shift waveguides, a dielectric buffer layer on the substrate and the input, the output, and the phase shift waveguides, and a signal electrode and a ground electrode on the buffer layer to overlie on the phase shift electrodes and which may further comprise an additional ground electrode to form a CPW structure rather than an ASL or an ACPS structure, the buffer layer has a thickness which decreases continuously or stepwise from an outer edge to an inner edge of each of the first and the second waveguides. Preferably, a ratio of a thin thickness at the inner edges to a predetermined thickness at the outer edges and outwardly thereof is between 0.25 to 0.9. Another ratio of a width of the signal electrode to a gap between the signal electrode and the ground electrode on the second waveguide is between 1 and 0.1.

    Abstract translation: 在通常用作波导调制器或开关并且包括呈现电光效应的衬底，输入和输出波导，第一和第二相移波导，衬底上的介质缓冲层和输入的光波导器件中， 输出和相移波导以及缓冲层上的信号电极和接地电极覆盖在相移电极上，并且还可以包括另外的接地电极以形成CPW结构而不是ASL或ACPS结构 缓冲层具有从第一和第二波导中的每一个的外边缘到内边缘连续或逐步减小的厚度。 优选地，内边缘处的薄厚度在外边缘处和外侧的厚度之间的比率在0.25至0.9之间。 信号电极的宽度与第二波导上的信号电极和接地电极之间的间隙的另一比例在1和0.1之间。

    Optical control device and method for making the same
    155.
    发明授权
    Optical control device and method for making the same 失效
    光控装置及其制作方法

    公开(公告)号：US5687265A

    公开(公告)日：1997-11-11

    申请号：US535477

    申请日：1995-09-27

    Applicant: Hiroshi Nishimoto ,  Toshiyuki Kambe

    Inventor： Hiroshi Nishimoto ,  Toshiyuki Kambe

    IPC: G02F1/035 ,  G02F1/225 ,  G02F1/313 ,  G02B6/26 ,  G02B6/42

    CPC classification number: G02F1/035 ,  G02F1/225 ,  G02F1/3132 ,  G02F1/3136 ,  G02F1/3137 ,  G02F2201/07 ,  G02F2203/21

    Abstract: Disclosed is an optical control device which has a LiNbO3 or LiTaO3 crystalline substrate having electrooptic effect; a channel-type optical waveguide which is formed in the crystalline substrate by doping metal; an optically transparent film layer formed on the crystalline substrate; and electrodes formed on the optically transparent film layer; wherein the crystalline substrate has a surface except a region which waveguided-light through the channel-type optical waveguide propagates or an entire surface under which a layer doped by metal is formed.

    Abstract translation: 公开了具有具有电光效应的LiNbO 3或LiTaO 3晶体基板的光学控制装置; 通过掺杂金属在晶体衬底中形成的沟道型光波导; 形成在所述结晶基板上的光学透明膜层; 和形成在光学透明膜层上的电极; 其中所述晶体衬底具有除了通过所述沟道型光波导传播的波导光的区域或者形成由金属掺杂的层的整个表面之外的表面。

    Optical modulation system
    156.
    发明授权
    Optical modulation system 失效
    光调制系统

    公开(公告)号：US5638468A

    公开(公告)日：1997-06-10

    申请号：US397077

    申请日：1995-03-07

    Applicant: Yuichi Tokano ,  Ryoji Muramatsu ,  Takanobu Tanabe ,  Tsugio Takeda

    Inventor： Yuichi Tokano ,  Ryoji Muramatsu ,  Takanobu Tanabe ,  Tsugio Takeda

    IPC: G02F1/225 ,  G02F1/035

    CPC classification number: G02F1/2255 ,  G02F1/225 ,  G02F2001/212 ,  G02F2201/07 ,  G02F2202/07 ,  G02F2203/20 ,  G02F2203/21

    Abstract: A system comprises a substrate 4, an incident optical waveguide 5 formed on the substrate for receiving a light beam incident thereto, two phase-shift optical waveguides 6 formed on the substrate 4 to be branched from the incident optical waveguide 4 for varying a phase of a transmitted light beam in response to an electric field intensity, an outgoing optical waveguide 7 formed on the substrate 4 to join the phase-shift optical waveguides 6. At least one of the phase-shift optical waveguides 6 has a reversely polarized portion 8 reversely polarized. A light transmission film may be formed at one or a plurality of portions on the phase-shift optical waveguides 6. A buffer layer 14 may be formed on a part on or in the vicinity of the phase-shift optical waveguides 6. A transparent substance film for imparting a stress to one of the phase-shift optical waveguides 6 may be formed on a part or a whole of a portion without the buffer layer 14. A stress imparting member may be formed to impart a stress to a part of one of the phase-shift optical waveguides 6. A light irradiation unit 26 may be formed to irradiate a light beam onto a part or a whole of one of the phase-shift optical waveguides 6.

    Abstract translation: PCT No.PCT / JP94 / 01103 Sec。 371日期：1995年3月7日 102（e）1995年3月7日PCT PCT 1994年7月7日PCT公布。 公开号WO95 / 02205 日期1995年1月19日系统包括基板4，形成在基板上的入射光波导5，用于接收入射到其上的光束，形成在基板4上的两个相移光波导6从入射光波导4分支 用于响应于电场强度改变透射光束的相位;形成在基板4上的输出光波导7，以连接相移光波导6.至少一个相移光波导6具有 反极化部分8反向极化。 透光膜可以在相移光波导6上的一个或多个部分处形成。缓冲层14可以形成在相移光波导6上或附近的部分上。透明物质 可以在没有缓冲层14的部分或全部上形成用于向相移光波导6中的一个施加应力的膜。可以形成应力赋予构件以向其中的一个的一部分施加应力 相移光波导6.可以形成光照射单元26，以将光束照射到一个相移光波导6的一部分或全部上。

    High-speed external integrated optical modulator
    157.
    发明授权
    High-speed external integrated optical modulator 失效
    高速外部集成光调制器

    公开(公告)号：US5455876A

    公开(公告)日：1995-10-03

    申请号：US274313

    申请日：1994-07-13

    Applicant: Samuel Hopfer ,  Yosef Shani

    Inventor： Samuel Hopfer ,  Yosef Shani

    IPC: G02B6/12 ,  G02F1/035 ,  G02F1/225

    CPC classification number: G02B6/12004 ,  G02F1/0356 ,  G02F1/2255 ,  G02F2201/07 ,  G02F2201/127

    Abstract: An improved high-speed external optical modulator, modulated by RF waves, which velocity matches the RF waves with the optical waves is disclosed. The apparatus includes a lithium niobate substrate on which is formed an optical waveguide, electrically floating electrodes, a low dielectric buffer layer and electrodes carrying the modulating RF energy. At least one floating electrode may comprise a series of spaced electrode segments for enhanced performance at high frequencies.

    Abstract translation: 公开了一种由RF波调制的改进的高速外部光学调制器，其速度与RF波与光波匹配。 该装置包括铌酸锂基板，其上形成有光波导，电浮动电极，低介电缓冲层和承载调制RF能量的电极。 至少一个浮动电极可以包括一系列间隔开的电极段，用于在高频下增强性能。

    Waveguide type optical directional coupler
    158.
    发明授权
    Waveguide type optical directional coupler 失效
    波导型光学定向耦合器

    公开(公告)号：US5371812A

    公开(公告)日：1994-12-06

    申请号：US117122

    申请日：1993-11-22

    Applicant: Masanori Nakamura

    Inventor： Masanori Nakamura

    IPC: G02F1/035 ,  G02F1/313 ,  G02B6/26

    CPC classification number: G02F1/035 ,  G02F1/3132 ,  G02F2201/07 ,  G02F2202/20

    Abstract: Down-sized optical directional coupler with high performance and reduction of power includes a LiTaO.sub.3 monocrystal substrate, at least two optical waveguides of a LiNbO.sub.3 monocrystalline thin film formed close to and parallel to each other, and means for changing a refractive index of the optical waveguide provided on at least one of the optical waveguides, thereby obtaining a matching of a lattice constant between the LiTaO.sub.3 monocrystal substrate and the LiNbO.sub.3 monocrystalline thin film.

    Abstract translation: 具有高性能和功率降低的尺寸较小的光学定向耦合器包括LiTaO3单晶衬底，彼此靠近并平行的形成的LiNbO 3单晶薄膜的至少两个光波导，以及用于改变光波导的折射率的装置 设置在至少一个光波导中，从而获得LiTaO3单晶衬底和LiNbO 3单晶薄膜之间的晶格常数的匹配。

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