OPTICAL SENSOR HAVING A NON-NEGLIGIBLE SOURCE COHERENCE LENGTH
    31.
    发明申请
    OPTICAL SENSOR HAVING A NON-NEGLIGIBLE SOURCE COHERENCE LENGTH 有权
    具有不可忽略的源距离长度的光学传感器

    公开(公告)号:US20120281225A1

    公开(公告)日:2012-11-08

    申请号:US13493844

    申请日:2012-06-11

    CPC classification number: G01C19/721

    Abstract: An optical sensor, a method of configuring an optical sensor, and a method of using an optical sensor are provided. The optical sensor includes an optical waveguide having a length and a laser source optically coupled to the waveguide. The laser source has a coherence length. Light from the source is transmitted to the waveguide as a first signal propagating along the waveguide in a first direction and a second signal propagating along the waveguide in a second direction opposite to the first direction. The optical paths of the first signal and the second signal are substantially reciprocal with one another and the first signal and the second signal are combined together after propagating through the waveguide to generate a third signal. The coherence length is greater than 1 meter or is in a range between 200 microns and 10 centimeters.

    Abstract translation: 提供光学传感器,配置光学传感器的方法以及使用光学传感器的方法。 光学传感器包括具有光学耦合到波导的长度的光波导和激光源。 激光源具有相干长度。 源自光源的光作为沿着波导沿第一方向传播的第一信号被传输到波导,第二信号沿着与第一方向相反的第二方向沿着波导传播。 第一信号和第二信号的光路基本上彼此相互倒数,并且在通过波导传播之后将第一信号和第二信号组合在一起以产生第三信号。 相干长度大于1米或处于200微米至10厘米之间的范围内。

    FIBER OPTIC SENSOR USING A HOLLOW CORE FIBER
    32.
    发明申请
    FIBER OPTIC SENSOR USING A HOLLOW CORE FIBER 有权
    光纤传感器使用中空纤维

    公开(公告)号:US20120062902A1

    公开(公告)日:2012-03-15

    申请号:US13230740

    申请日:2011-09-12

    CPC classification number: G01C19/722 G02B6/02328 G02B6/02361

    Abstract: An optical sensor includes at least a portion of an optical waveguide having a hollow core generally surrounded by a cladding. The cladding substantially confines a first optical signal and a second optical signal within the hollow core as the first optical signal and the second optical signal counterpropagate through the optical waveguide. Interference between the first optical signal and the second optical signal is responsive to perturbation of the at least a portion of the optical waveguide.

    Abstract translation: 光学传感器包括光波导的至少一部分,其具有通常被包层包围的中空芯。 当第一光信号和第二光信号通过光波导反向传播时,包层基本上限制在中空芯内的第一光信号和第二光信号。 第一光信号和第二光信号之间的干扰响应于光波导的至少一部分的扰动。

    OPTICAL-FIBER-COMPATIBLE ACOUSTIC SENSOR
    33.
    发明申请
    OPTICAL-FIBER-COMPATIBLE ACOUSTIC SENSOR 有权
    光纤兼容声学传感器

    公开(公告)号:US20110268384A1

    公开(公告)日:2011-11-03

    申请号:US13047668

    申请日:2011-03-14

    Abstract: An acoustic sensor includes a diaphragm having a reflective element. The sensor has an optical fiber positioned relative to the reflective element such that light emitted from the optical fiber is reflected by the reflective element. A first end of the optical fiber and the reflective element form an optical cavity 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: 声传感器包括具有反射元件的隔膜。 传感器具有相对于反射元件定位的光纤,使得从光纤发射的光被反射元件反射。 光纤的第一端和反射元件在其间形成光腔。 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。

    LASER-DRIVEN OPTICAL GYROSCOPE HAVING A NON-NEGLIGIBLE SOURCE COHERENCE LENGTH
    34.
    发明申请
    LASER-DRIVEN OPTICAL GYROSCOPE HAVING A NON-NEGLIGIBLE SOURCE COHERENCE LENGTH 有权
    激光驱动的光学陀螺仪具有不可忽略的源距离长度

    公开(公告)号:US20100302548A1

    公开(公告)日:2010-12-02

    申请号:US12767643

    申请日:2010-04-26

    CPC classification number: G01C19/721

    Abstract: A fiber-optic sensor, a method of configuring a fiber-optic sensor, and a method of using a fiber-optic sensor are provided. The fiber-optic sensor includes an optical fiber coil having a length and a laser source optically coupled to the coil. The laser source has a coherence length. Light from the source is transmitted to the coil as a first signal propagating along the coil in a first direction and a second signal propagating along the coil in a second direction opposite to the first direction. The optical paths of the first signal and the second signal are substantially reciprocal with one another and the first signal and the second signal are combined together after propagating through the coil to generate a third signal. The coherence length is greater than 1 meter or is in a range between 200 microns and 10 centimeters.

    Abstract translation: 提供了光纤传感器,配置光纤传感器的方法以及使用光纤传感器的方法。 光纤传感器包括具有光学耦合到线圈的长度的光纤线圈和激光源。 激光源具有相干长度。 来自源极的光作为沿着线圈沿第一方向传播的第一信号被传输到线圈,而第二信号沿着与第一方向相反的第二方向沿着线圈传播。 第一信号和第二信号的光路基本上彼此相互倒数,并且第一信号和第二信号在传播通过线圈之后组合在一起以产生第三信号。 相干长度大于1米或处于200微米至10厘米之间的范围内。

    FIBER OPTIC SENSOR USING A BRAGG FIBER
    35.
    发明申请
    FIBER OPTIC SENSOR USING A BRAGG FIBER 有权
    光纤传感器使用BRAGG光纤

    公开(公告)号:US20100220332A1

    公开(公告)日:2010-09-02

    申请号:US12775379

    申请日:2010-05-06

    CPC classification number: G01C19/722 G02B6/02328 G02B6/02361

    Abstract: An optical sensor includes an optical coupler configured to receive a first optical signal and to split the first optical signal into a second optical signal and a third optical signal. The optical sensor further includes a Bragg fiber in optical communication with the optical coupler. The second optical signal and the third optical signal counterpropagate through the Bragg fiber and return to the third port and the second port, respectively.

    Abstract translation: 光学传感器包括光耦合器,被配置为接收第一光信号并且将第一光信号分裂为第二光信号和第三光信号。 光学传感器还包括与光耦合器光学通信的布拉格光纤。 第二光信号和第三光信号通过布拉格光纤反向传播并分别返回到第三端口和第二端口。

    LOW-NOISE FIBER OPTIC SENSOR UTILIZING A LASER SOURCE
    37.
    发明申请
    LOW-NOISE FIBER OPTIC SENSOR UTILIZING A LASER SOURCE 有权
    低噪声光纤传感器利用激光源

    公开(公告)号:US20090195785A1

    公开(公告)日:2009-08-06

    申请号:US12271760

    申请日:2008-11-14

    CPC classification number: G01C19/721

    Abstract: A fiber-optic sensor includes an optical fiber coil and a laser source optically coupled to the coil. Light from the source is transmitted to the coil as a first signal propagating along the coil in a first direction and a second signal propagating along the coil in a second direction opposite to the first direction. The optical paths of the first signal and the second signal are substantially reciprocal with one another and the first signal and the second signal are combined together after propagating through the coil to generate a third signal. The laser source is frequency-modulated or can have a coherence length longer than a length of the coil.

    Abstract translation: 光纤传感器包括光纤线圈和光耦合到线圈的激光源。 来自源极的光作为沿着线圈沿第一方向传播的第一信号被传输到线圈,而第二信号沿着与第一方向相反的第二方向沿着线圈传播。 第一信号和第二信号的光路基本上彼此相互倒数,并且第一信号和第二信号在传播通过线圈之后组合在一起以产生第三信号。 激光源被调频,或者可以具有比线圈长度更长的相干长度。

    PHOTONIC CRYSTAL STRUCTURE SENSOR
    38.
    发明申请
    PHOTONIC CRYSTAL STRUCTURE SENSOR 有权
    光电晶体结构传感器

    公开(公告)号:US20080226217A1

    公开(公告)日:2008-09-18

    申请号:US11971714

    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 SENSOR USING A HOLLOW CORE WAVEGUIDE
    40.
    发明申请
    OPTICAL SENSOR USING A HOLLOW CORE WAVEGUIDE 有权
    使用中空波导的光学传感器

    公开(公告)号:US20120281226A1

    公开(公告)日:2012-11-08

    申请号:US13493919

    申请日:2012-06-11

    CPC classification number: G01C19/722 G02B6/02328 G02B6/02361

    Abstract: An optical sensor includes at least a portion of an optical waveguide having a hollow core. The optical waveguide substantially confines a first optical signal and a second optical signal within the hollow core as the first optical signal and the second optical signal counterpropagate through the optical waveguide. Interference between the first optical signal and the second optical signal is responsive to perturbation of the at least a portion of the optical waveguide.

    Abstract translation: 光学传感器包括具有中空芯的光波导的至少一部分。 当第一光信号和第二光信号通过光波导反向传播时,光波导基本上限制在中空芯内的第一光信号和第二光信号。 第一光信号和第二光信号之间的干扰响应于光波导的至少一部分的扰动。

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