MODULATING A LIGHT BEAM.
    1.
    发明公开
    MODULATING A LIGHT BEAM. 失效
    调制梁。

    公开(公告)号:EP0638177A4

    公开(公告)日:1995-12-06

    申请号:EP93910831

    申请日:1993-04-28

    Abstract: A modulator (10) for modulating incident rays of light, the modulator having several equally spaced beam elements (18), each having a light reflective planar surface. The beam elements are arranged and supported (12) parallel to each other, with their reflective surfaces parallel. During operation, the elements remain parallel, but the modulator moves the beams so that the perpendicular spacing of their reflective surfaces changes between two configurations. In both configurations, the spacing equals m/4 times the wavelength of incident light. In the first configuration, m equals an even whole number or zero, and the modulator acts to reflect the incident rays of light as a plane mirror. In the second configuration, m equals an odd number and the modulator diffracts the incident rays as they are reflected.

    PHOTONIC CRYSTAL STRUCTURE SENSOR
    3.
    发明申请
    PHOTONIC CRYSTAL STRUCTURE SENSOR 审中-公开
    光电晶体结构传感器

    公开(公告)号:WO2008086448A3

    公开(公告)日:2008-10-30

    申请号:PCT/US2008050677

    申请日:2008-01-09

    CPC classification number: G01H9/004 G02B6/264

    Abstract: An acoustic sensor and a method of fabricating an acoustic sensor are provided. The acoustic sensor includes at least one photonic crystal structure and an optical fiber having an end optically coupled to the at least one photonic crystal structure. The acoustic sensor further includes a structural portion mechanically coupled to the at least one photonic crystal structure and to the optical fiber. The at least one photonic crystal structure, the optical fiber, and the structural portion substantially bound a region having a volume such that a frequency response of the acoustic sensor is generally flat in a range of acoustic frequencies.

    Abstract translation: 提供声传感器和制造声传感器的方法。 声传感器包括至少一个光子晶体结构和具有光学耦合到至少一个光子晶体结构的端部的光纤。 声学传感器还包括机械耦合到至少一个光子晶体结构和光纤的结构部分。 至少一个光子晶体结构,光纤和结构部分基本上结合了具有音量的区域,使得声学传感器的频率响应在声频范围内通常是平坦的。

    OPTICAL-FIBER-COMPATIBLE ACOUSTIC SENSOR
    4.
    发明申请
    OPTICAL-FIBER-COMPATIBLE ACOUSTIC SENSOR 审中-公开
    光纤兼容声学传感器

    公开(公告)号:WO2011115933A3

    公开(公告)日:2013-01-10

    申请号:PCT/US2011028407

    申请日:2011-03-14

    Abstract: An acoustic sensor (10) includes a diaphragm (20) having a reflective element. The sensor has an optical fiber (30) positioned relative to the reflective element such that light emitted from the optical fiber is reflected by the reflective clement. A first end of the optical fiber and the reflective element form an optical cavity (40) therebetween. The acoustic sensor further includes a structural element mechanically coupled to the diaphragm and the optical fiber. The structural element includes a material having a coefficient of thermal expansion substantially similar to the coefficient of thermal expansion of the optical fiber. For example, the material can be silica.

    Abstract translation: 声学传感器(10)包括具有反射元件的隔膜(20)。 传感器具有相对于反射元件定位的光纤(30),使得从光纤发射的光被反射元件反射。 光纤和反射元件的第一端在其间形成光腔(40)。 声学传感器还包括机械耦合到隔膜和光纤的结构元件。 结构元件包括具有基本上类似于光纤的热膨胀系数的热膨胀系数的材料。 例如,该材料可以是二氧化硅。

    HIGH-SENSITIVITY FIBER-COMPATIBLE OPTICAL ACOUSTIC SENSOR
    5.
    发明申请
    HIGH-SENSITIVITY FIBER-COMPATIBLE OPTICAL ACOUSTIC SENSOR 审中-公开
    高灵敏度光纤兼容光学声学传感器

    公开(公告)号:WO2006119200A3

    公开(公告)日:2006-12-21

    申请号:PCT/US2006016650

    申请日:2006-04-28

    CPC classification number: G01H9/00 G01H9/004

    Abstract: An acoustic sensor includes at least one photonic crystal structure having at least one optical resonance with a resonance frequency and a resonance lineshape. The acoustic sensor further includes a housing substantially surrounding the at least one photonic crystal structure and mechanically coupled to the at least one photonic crystal structure. At least one of the resonance frequency and the resonance lineshape is responsive to acoustic waves incident upon the housing.

    Abstract translation: 声传感器包括至少一个光子晶体结构,其具有至少一个具有谐振频率和谐振线形的光学谐振。 声学传感器还包括基本上围绕至少一个光子晶体结构并机械耦合到至少一个光子晶体结构的壳体。 谐振频率和谐振线形形状中的至少一个对入射在壳体上的声波有反应。

    OPTICAL-FIBER-COMPATIBLE ACOUSTIC SENSOR

    公开(公告)号:CA3013169C

    公开(公告)日:2020-10-27

    申请号:CA3013169

    申请日:2011-03-14

    Abstract: An acoustic sensor system comprises a first acoustic sensor, a second acoustic sensor and a reservoir. The first acoustic sensor comprises a first reflective element and a first optical fiber positioned relative to the first reflective element such that light emitted from the first optical fiber is reflected by the first reflective element. An end of the first optical fiber and the first reflective element form a first optical cavity therebetween, comprising a liquid medium. The second acoustic sensor comprises a second reflective element and a second optical fiber positioned relative to the second reflective element such that light emitted from the second optical fiber is reflected by the second reflective element. An end of the second optical fiber and the second reflective element form a second optical cavity therebetween, comprising the liquid medium. The reservoir comprises the liquid medium and is in fluidic communication with the first and second optical cavities.

    8.
    发明专利
    未知

    公开(公告)号:NO20121186A1

    公开(公告)日:2012-10-15

    申请号:NO20121186

    申请日:2012-10-15

    Abstract: A sensor is provided, with the sensor including a reflective element and an optical fiber positioned relative to the reflective element such that light emitted from the optical fiber is reflected by the reflective element and propagates in an optical cavity between the optical fiber and the reflective element. A first material is within the optical cavity and has a coefficient of thermal expansion and a thickness that compensate a refractive index change with temperature of a second material within the optical cavity.

    PHASE-FRONT-MODULATION SENSOR AND METHOD OF FABRICATION

    公开(公告)号:CA2921526A1

    公开(公告)日:2016-08-23

    申请号:CA2921526

    申请日:2016-02-22

    Abstract: A sensor and a method of fabrication are provided. The sensor includes at least one optical waveguide and an optical reflector. The optical reflector is optically coupled to the at least one optical waveguide and includes a first portion and a second portion. The first portion is configured to reflect a first portion of light back to the at least one optical waveguide. The second portion is configured to reflect a second portion of light back to the at least one optical waveguide. The reflected second portion of the light differs in phase from the reflected first portion of the light by a phase difference that is not substantially equal to an integer multiple of .pi. when the second portion of the optical reflector is in an equilibrium position in absence of the perturbation.

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