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    • 5. 发明公开
    • OPTICAL SWITCH
    • 光开关
    • EP1258770A1
    • 2002-11-20
    • EP01272272.4
    • 2001-12-20
    • NGK INSULATORS, LTD.
    • TAKEUCHI, Yukihisa, NGK INSULATORS, LTD.NANATAKI, Tsutomu, NGK INSULATORS, LTD.KIMURA, Koji, NGK INSULATORS, LTD.
    • G02B26/08
    • G02B6/3522G02B6/3512G02B6/3556G02B6/3578
    • An optical switch includes: at least a light transmission portion 1, an optical path-changing portion 8 and an actuator portion 11. The light transmission portion 1 has a light reflecting plane 1a provided on at least one part of a plane facing the optical path-changing portion 8 to totally reflect light, and light transmission channels having optical wave guiding bodies 2,4,5 and being provided in at least three directions with the light reflecting plane 1a as a starting point. The optical path-changing portion 8 is provided in proximity to the light reflecting plane 1a of the light transmission portion 1 in a movable condition and has an optical path-changing member 10 for at least reflecting or scattering light. The actuator portion 14 has a mechanism that is displaced by external signals and transmits the displacement to the optical path-changing portion 8. The switching or dividing of an optical path is carried out by contacting or separating the optical path-changing portion 8 to or from the light reflecting plane 1a of the light transmission portion 1 by displacement of the actuator portion 14 in response to the external signals. An input light 21 from the light transmission channels 2 is totally reflected at the light reflecting plane 1a of the light transmission portion 1, and it is transmitted to a specific light transmission channel 4 on an output side when the optical path-changing portion 8 is separated from the light reflecting plane 1a of the light transmission portion 1. Or an input light 21 is taken from the light transmission channel 2, is reflected or scattered at the optical path-changing portion 8, and it is transmitted to a specific one or more light transmission channel(s) 4 on the output side when the optical path-changing portion 8 is contacted to the light reflecting plane 1a of the light transmission portion 1. This optical switch allows low power consumption, makes possible high-speed response, size reduction and high integration, significant reduction of signal attenuation and, furthermore, switching per specific input light.
    • 6. 发明公开
    • Optical cross-switch gas intrusion detector and detection method
    • Optischer Querverbindungsschalter mit Detektorfüreindringendes Gas und Nachweisverfahren
    • EP1229375A2
    • 2002-08-07
    • EP01125645.0
    • 2001-10-26
    • Agilent Technologies, Inc. (a Delaware corporation)
    • Schroeder, Dale
    • G02B26/02
    • G02B26/004G02B6/3522G02B6/3538G02B6/3546G02B6/3576G02B6/3582
    • A system and method are provided for detection of gas intrusion into a fluid-containing device [50]. The fluid-containing device [50] has a first waveguide [62] and a second waveguide [92] that intersect at a trench [62+92] such that optical coupling between the first and second waveguides [62,92] is dependent upon an absence of a fluid in the trench [62+92]. The fluid containing device [50] includes a fluid removal mechanism for removing fluid to the trench [62+92] to switch the fluid-containing device [50]. An optical connection is made between first ends of the first and second waveguides [62,92] and a light source [102] provides a light at a second end of the first waveguide [62] and a detector [102] detects the light at a second end of the second waveguide [92]. The times required to remove and return the fluid from the trench [62+92] are used as an indicator of gas intrusion into the fluid containing device [50].
    • 提供了一种用于检测气体侵入流体容纳装置的系统和方法。 含流体的装置Ä50Ü具有在沟槽Ä62+ 92 that处相交的第一波导Ä62Ü和第二波导Ä92Ü,使得第一和第二波导é62,92Ü之间的光学耦合取决于沟槽中的流体Ä62+ 92U。 流体容纳装置Ä50Ü包括用于将流体移除到沟槽Ä62+92Ü以切换含流体的装置Ä50Ü的流体移除机构。 在第一和第二波导é62,92Ü的第一端之间形成光学连接,并且光源Ä102Ü在第一波导Ä62Ü的第二端处提供光,并且检测器Ä102Ü检测第二波导的第二端处的光Ä92Ü 。 用于从沟槽Ä62+92Ü移除和返回流体所需的时间用作气体侵入流体容纳装置的指示器。