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    • 4. 发明授权
    • ELECTRIC FIELD SENSOR
    • 电场传感器
    • EP0668507B1
    • 2002-10-09
    • EP94919863.4
    • 1994-07-07
    • NEC TOKIN Corporation
    • TOKANO, YuichiKONDO, Michikazu
    • G01R15/24G01R29/08
    • G01R15/241G01R29/0885
    • An electric field sensor comprising an input optical, an incoming waveguide (5) formed on a substrate (4), two branched waveguides (6) branched from the waveguide (5) on the substrate (4) and having refractive indexes variable depending upon the intensity of the applied electric field; an output wave guide (7) joined with the waveguides (6) on the substrate (4); and a shield member (8) provided near the guides (6) to shield part of the waveguide (6) from electric fields. A reflecting mirror (16) may be formed on the substrate (4) so as to reflect light from the guides (6). The substrate (4) may be formed of a ferroelectric substance, in which the respective regions of the two waveguides (6) are polarized in opposite directions.
    • 一种电场传感器,包括输入光学部件,形成在衬底(4)上的输入波导(5),在衬底(4)上从波导(5)分支出来的两个分支波导(6),其折射率根据 施加电场的强度; 在基板(4)上与波导(6)结合的输出波导(7); 以及靠近导轨(6)设置的屏蔽部件(8),以遮蔽波导(6)的一部分免受电场影响。 可以在基板(4)上形成反射镜(16)以反射来自导轨(6)的光。 衬底(4)可以由铁电物质形成,其中两个波导(6)的各个区域在相反的方向上被极化。
    • 5. 发明公开
    • ELECTRIC FIELD SENSOR.
    • 传感器的电场。
    • EP0668508A4
    • 1996-09-11
    • EP94919869
    • 1994-07-07
    • TOKIN CORP
    • TOKANO YUICHI
    • G01R15/24G01R29/08
    • G01R15/241G01R29/0885
    • An electric field sensor equipped with a sensor head (1), package (13) housing the head (1), and an antenna (14) attached to the package (13) and connected to the head (1). The head (1) is composed of a substrate (3) and an optical modulator (4) mounted on the substrate (3). The modulator (4) is provided with an input optical waveguide (5) formed on the substrate (3), two phase-shifting optical waveguides (6) branched from the waveguide (5) on the substrate (3) and having the refractive indexes variable depending upon the intensity of the applied electric field, an output waveguide (7) joined with the waveguides (6) on the substrate (3), and two modulating electrodes (8) formed on or in the vicinity of the waveguides (6). The antenna (14) has two rod antenna elements (17 and 18) which are extended in parallel with the waveguide (6) in the opposite directions from the central part of the package (13). It is possible to fix the antenna (14) to the side face (21) of the package (13) and constitute the antenna (14) of two antenna element film pieces (22 and 23) which are extended in parallel with the guides (6) in the opposite directions from the central part of the side face (21). The antenna element film pieces (17 and 18) can be fixed to the substrate (3). It is also possible to form a plurality of optical modulators on the substrate and connect the antennas, respectively, to the modulators.
    • 6. 发明公开
    • OPTICAL ELECTRIC FIELD SENSOR
    • OPTISCHERFÜHLERFÜRELEKTRISCHE FELDER。
    • EP0668506A1
    • 1995-08-23
    • EP94919861.8
    • 1994-07-07
    • TOKIN CORPORATION
    • TOKANO, YuichiTANABE, Takanobu
    • G01R15/07
    • G01R15/241G01R29/0885
    • An optical electric field sensor is constituted of optical parts (2-4 and 11-13) including an optical crystal and it is used to measure the intensity of a naturally or forcibly generated electric field by utilizing such a phenomenon that the intensity, phase, or polarization direction of light changes when the light is passed through the electric field. The optical parts are arranged and enclosed in a package (7) formed of at least one kind of material selected from such a glass material as quartz, ceramics, such a plastic material as antistatic vinyl chloride. When the main surface section of the package (7) is satinized, a greater effect can be obtained. The optical crystal having an electrooptic effect is enclosed in an heat- insulating material. In addition, a conductive resin is applied to the entire surface of the substrate of the optical crystal and a silicon resin is applied between modulating electrodes.
    • 光电传感器由包括光学晶体的光学部件(2-4和11-13)构成,并且用于通过利用这样的现象来测量自然或强制产生的电场强度:强度,相位, 或者当光通过电场时,光的偏振方向发生变化。 光学部件被布置并封装在由诸如石英的玻璃材料中选择的至少一种材料形成的封装(7)中,陶瓷,诸如抗静电氯乙烯的塑料材料。 当包装(7)的主表面部分被缎纹化时,可以获得更大的效果。 具有电光效应的光学晶体被封闭在绝热材料中。 此外,导电树脂被施加到光学晶体的基板的整个表面,并且硅树脂被施加在调制电极之间。
    • 7. 发明公开
    • ELECTRIC FIELD SENSOR
    • 电场传感器
    • EP0664460A1
    • 1995-07-26
    • EP94919872.5
    • 1994-07-07
    • TOKIN CORPORATION
    • KONDO, Michikazu
    • G01R15/07
    • G01R29/0885G01R15/241G01R15/242
    • An electric field sensor comprising a sensor head (100) that varies the intensity of light transmitted therethrough depending upon the strength of the applied electric field; an optical fiber (8) which leads light from a light source (1) to the head (100); an optical fiber (9) which leads the light transmitted through the head (100) to a photoelectric converter (10); and a measuring instrument (11) which measures and displays electric signals from the converter (10). This sensor detects electromagnetic noise or electromagnetic leakage through changes in intensity of light without bringing the head (100) into contact with a source of electromagnetic noise or leakage, but by positioning the head (10) near the source.
    • 一种电场传感器,包括根据所施加的电场的强度改变透过其中的光的强度的传感器头(100) 将来自光源(1)的光导向头部(100)的光纤(8); 光导纤维(9),其将通过头部(100)透射的光导向光电转换器(10); 和测量和显示来自转换器(10)的电信号的测量仪器(11)。 该传感器通过改变光的强度来检测电磁噪声或电磁泄漏,而不使头部(100)与电磁噪声或泄漏源接触,但通过将头部(10)定位在源附近。
    • 8. 发明公开
    • Capteur de champ électrique à effet pockels
    • Pockelseffekt-Messsondefürelektrische Felder。
    • EP0453693A1
    • 1991-10-30
    • EP90403751.2
    • 1990-12-21
    • COMMISSARIAT A L'ENERGIE ATOMIQUE
    • Chollet, Pierre-Alain
    • G01R1/067G01R15/07G01R29/08G01R29/12G02F1/03
    • G01D5/344G01R1/071G01R15/242G01R29/0885G01R29/12G02F1/03
    • Le capteur comprend comme élément sensible un cristal à propriétés électro-optiques, traversé par un faisceau lumineux de directions de propagation et de polarisation déterminées, ce cristal étant taillé sous forme d'un ellipsoïde (14) et présentant une symétrie cristallographique soit uniaxiaLe 622, 422 ou 4 2m, soit cubique 4 3m ou 23, les trois axes perpendiculaires de l'ellipsoïde étant orientés selon trois axes cristallographiques trirectangles de symétrie la plus élevée du cristal. Ce capteur comporte au moins une voie de mesure qui comprend une source de lumière monochromatique (2) émettant un faisceau incident (4), un moyen (6) de polarisation du faisceau incident selon une première direction cristallographique du cristal, des moyens d'introduction (6, 8, 12) du faisceau incident polarisé dans le cristal selon une seconde direction cristallographique, un moyen d'analyse (30) du faisceau lumineux sortant du cristal et un moyen de détection (32) du signal lumineux analysé.
    • 传感器的敏感元件是具有通过具有预定的传播和极化方向的光束穿过的电光学特性的晶体。 该晶体成形为椭圆体(14),其晶体对称性为单轴622,422或42μm或立方43μm或23.椭圆体的三个垂直轴沿着最高晶体对称性的三个正交晶轴引导。 该传感器包括至少一个由发射入射光束(4)的单色光源(2)组成的测量通道,沿晶体的第一晶体方向偏振入射光束的装置(6),装置(6,8, 12),用于沿着第二结晶方向将偏振入射光束引入晶体,用于分析从晶体出射的光束的系统(30)和分析的光信号的检测器(32)。 ... ...
    • 9. 发明公开
    • Faseroptischer Sensor
    • 光纤传感器。
    • EP0433824A1
    • 1991-06-26
    • EP90123660.4
    • 1990-12-08
    • ASEA BROWN BOVERI AG
    • Bohnert, Klaus, Dr.Buser, Werner
    • G01R15/07G01R29/12
    • G01R15/248G01R29/0885G01R29/12
    • In einem interferometrischen faseroptischen Sensor mit Homodyne-Detektion zum Messen elektrischer Felder oder Spannungen erfolgt die Kompensation des Messignals getrennt von der Arbeitspunktkontrolle. Das vom elektrischen Feld herrührende Messignal wird in einem piezoelektrischen Modulator (5) kompensiert, der aus Modulatorelementen besteht, die bezüglich Material, geometrischer Form und Kristallorientierung identisch mit dem mindestens einen Sensorelement (3) sind. Zur Arbeitspunktkontrolle sind zusätzliche, separate Mittel (4) mit einem hinreichend grossen Phasenhub vorgesehen. Modulatorelememt und Sensorelement (3) befinden sich im wesentlichen auf gleicher Temperatur, so dass die Temperaturabhängigkeit der Materialkonstanten des Sensorelements und die Temperaturabhängigkeit des Faserinterferometers eliminiert werden. Vorzugsweise arbeitet der Sensor nach dem Prinzip eines faseroptischen Zwei-Moden-Interferometers.
    • 在零差检测用于测量电场或电压时干涉光纤传感器,测量信号的补偿从工作点控制分别​​进行。 从电场测量信号始发的压电调制器(5)的补偿,其由调制器元件,材料,几何形状和晶体取向是相同的相对于所述至少一个传感器元件(3)。 对于工作点控制附加的,单独的装置(4)设置有一个足够大的相位偏差。 Modulatorelememt和传感器元件(3)位于在大致相同的温度,使得所述传感器元件和所述光纤干涉仪的温度依赖性的材料常数的温度依赖性可以被消除。 优选地,传感器在纤维 - 光学双模式干涉的原理工作。