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    Optical control device
    141.
    发明公开
    Optical control device 失效
    光控制器

    公开(公告)号：EP0713123A1

    公开(公告)日：1996-05-22

    申请号：EP95118157.7

    申请日：1995-11-17

    Applicant: NEC CORPORATION

    Inventor： Nishimoto, Hiroshi

    IPC: G02F1/035 ,  G02B6/13

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

    Abstract: Disclosed is an optical control device which has a substrate with a pyroelectric effect; optical waveguides formed on the surface of the substrate; a pair of electrodes formed near the optical waveguides; a film layer formed between the substrate and the electrodes; and conductive film which covers near the electrodes and has a conductivity higher than that of the film layer; wherein the conductive film has a plurality of insulating portions between the electrodes.

    Abstract translation: 公开了一种光学控制装置，其具有具有热电效应的基板; 形成在基板表面上的光波导; 在光波导附近形成的一对电极; 在基板和电极之间形成的膜层; 以及导电膜，其覆盖所述电极附近且具有比所述膜层高的导电性; 其中所述导电膜在所述电极之间具有多个绝缘部分。

    OPTICAL MODULATOR.
    142.
    发明公开
    OPTICAL MODULATOR. 失效
    光调制器。

    公开(公告)号：EP0658793A4

    公开(公告)日：1995-11-29

    申请号：EP94919862

    申请日：1994-07-07

    Applicant: TOKIN CORP

    Inventor： TOKANO YUICHI ,  MURAMATSU RYOJI ,  TANABE TAKANOBU ,  TAKEDA TSUGIO

    IPC: G02F1/225 ,  G02F1/035

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

    Abstract: A modulator comprising a substrate (4); a waveguide (5) formed on the substrate for receiving incident light; two phase-shift light waveguides (6) diverging from the incident light waveguide (5) and formed on the substrate (4), the phases of light transmitted through the waveguides (6) change with the intensity of electric field; and an exit light waveguide (7) formed on the substrate (4) where the phase-shift light waveguides (6) joins each other. At least one of the phase-shift light waveguides (6) has a part (8) where the polarization is inverted. A transparent film may be formed on one or plural areas on the phase-shift light waveguides (6). A buffer layer (14) may be provided on the phase-shift light waveguides (6) or near it. On the part where no buffer layer (14) is provided, a film of transparent material may be formed partly or entirely in order to exert stress on the phase-shift light waveguides (6). Partly on one of the phase-shift light waveguides (6), there may be provided a member which exerts stress on it. A device (26) may also be provided for irradiating partly or entirely the phase-shift light waveguides (6) with light.

    Planar waveguide device
    144.
    发明公开
    Planar waveguide device 失效
    平面波导装置

    公开(公告)号：EP0260416A3

    公开(公告)日：1988-12-14

    申请号：EP87110998

    申请日：1987-07-29

    Applicant: POLAROID CORPORATION

    Inventor： Robinson, William C. ,  Sanford, Norman A.

    IPC: G02F01/03

    CPC classification number: G02F1/035 ,  G02F2201/066 ,  G02F2201/07

    Abstract: A planar waveguide device including metallic electrodes (19, 21, 23) has a buffer layer (17) of reduced ordinary index of refraction formed in a substrate (13) between its waveguide (15) and electrodes. The device is preferably formed by first fabricating the waveguide in an x-or y-cut substrate of crystalline material, subsequently overcoating the sub­strate, including the waveguide, with a layer of magne­sium, oxidizing the magnesium at temperature to form the buffer layer and then laying the electrodes over the buffer layer. Alternatively, the buffer layer may be formed by a proton exchange process.

    Velocity matching apparatus
    145.
    发明公开
    Velocity matching apparatus 失效
    Vorrichtung zur Anpassung von Geschwindigkeiten。

    公开(公告)号：EP0152996A2

    公开(公告)日：1985-08-28

    申请号：EP85300045.3

    申请日：1985-01-04

    Applicant: THE GENERAL ELECTRIC COMPANY, p.l.c.

    Inventor： Parsons, Nicholas John ,  Owen, Martin Phillip

    IPC: G02F1/03

    CPC classification number: G02F1/0356 ,  G02F1/2255 ,  G02F1/3134 ,  G02F2201/07

    Abstract: Velocity matching between optical signals transmitted along a light guide (13) on a lithium niobate substrate (12) and microwave signals along transmission line electrodes (16 and 17) may be improved by positioning layers of dielectric material (14 and 15) between the substrate (12) and the electrodes (16 and 17). By improving the velocity matching the bandwidth of the device may be increased.

    Abstract translation: 可以通过将电介质材料（14和15）的层定位在衬底之间来改善沿着铌酸锂衬底（12）上的光导（13）传输的光信号与沿着传输线电极（16和17）的微波信号之间的速度匹配 （12）和电极（16和17）。 通过提高速度匹配，可以增加设备的带宽。

    OPTICAL WAVEGUIDE DEVICE
    150.
    发明公开
    OPTICAL WAVEGUIDE DEVICE 有权
    光纤零件

    公开(公告)号：EP1348992A4

    公开(公告)日：2005-03-02

    申请号：EP01273335

    申请日：2001-11-28

    Applicant: SUMITOMO OSAKA CEMENT CO LTD

    Inventor： MIYAMA YASUYUKI ,  NAGATA HIROTOSHI ,  SAKAMOTO TOSHIHIRO

    IPC: G02B6/12 ,  G02F1/03 ,  G02F1/035

    CPC classification number: G02F1/0322 ,  G02F1/035 ,  G02F1/0356 ,  G02F2201/07 ,  G02F2201/16 ,  G02F2203/21 ,  G02F2203/50

    Abstract: A first film (8) is formed between a substrate (1) constituting an optical waveguide device (10) and a signal electrode (3) and ground electrodes (5), (6). A second film (9) is formed between the substrate (1) and a signal electrode (4) and ground electrodes (6), (7). The substrate (1), an optical waveguide (2), the signal electrode (3), the ground electrodes (5), (6) and the first film (8) constitute an optical phase modulator (10A). The substrate (1), the optical waveguide (2), the signal electrode (4), the ground electrodes (6), (7) and the second film (9) constitute an optical intensity modulator (10B). The optical waveguide element (10) is constituted by integrating the optical phase modulator(10A) and the optical intensity modulator (10B).

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