SLOW-LIGHT FIBER BRAGG GRATING SENSOR
    21.
    发明申请
    SLOW-LIGHT FIBER BRAGG GRATING SENSOR 有权
    慢光纤BRAGG光栅传感器

    公开(公告)号:US20120086934A1

    公开(公告)日:2012-04-12

    申请号:US13224985

    申请日:2011-09-02

    Abstract: In certain embodiments, an optical device and a method of use is provided. The optical device can include a fiber Bragg grating and a narrowband optical source. The narrowband optical source can be configured to generate light. A first portion of light can be transmitted along a first optical path extending along and through the length of the fiber Bragg grating at a group velocity. The light can have a wavelength at or in the vicinity of a wavelength at which one or more of the following quantities is at a maximum value: (a) the product of the group index spectrum and a square root of the power transmission spectrum, (b) the slope of a product of the group index spectrum and one minus the power transmission spectrum, and (c) the slope of a product of the group index spectrum and the power transmission spectrum.

    Abstract translation: 在某些实施例中,提供了光学装置和使用方法。 光学装置可以包括光纤布拉格光栅和窄带光源。 窄带光源可以被配置为产生光。 光的第一部分可以沿着沿着光纤布拉格光栅的长度延伸并以组速度延伸的第一光路传输。 光可以具有在以下一个或多个以下量处于最大值的波长附近或附近的波长:(a)功率透射光谱的组折射谱和平方根的乘积( b)组索引谱和1减去功率透射谱的乘积的斜率,以及(c)组索引谱和功率透射光谱的乘积的斜率。

    APPARATUS AND METHOD FOR OPTICAL COHERENCE TOMOGRAPHY
    24.
    发明申请
    APPARATUS AND METHOD FOR OPTICAL COHERENCE TOMOGRAPHY 有权
    光学相干图像的装置和方法

    公开(公告)号:US20090207414A1

    公开(公告)日:2009-08-20

    申请号:US12372225

    申请日:2009-02-17

    Abstract: An apparatus is provided for measuring a frequency-domain optical coherence tomography power spectrum from a sample. The apparatus includes a broadband light source, an optical spectrum analyzer, and a partially reflective element optically coupled to the light source, to the optical spectrum analyzer, and to the sample. A first portion of light from the light source is reflected by the partially reflective element and propagates to the optical spectrum analyzer. A second portion of light from the light source propagating through the partially reflective element, impinging the sample, reflecting from the sample, and propagating to the optical spectrum analyzer.

    Abstract translation: 提供了一种用于从样本测量频域光学相干断层摄影功率谱的装置。 该装置包括宽带光源,光谱分析仪和与光源光耦合到光谱分析仪和样品的部分反射元件。 来自光源的光的第一部分被部分反射元件反射并传播到光谱分析仪。 来自光源的光的第二部分传播通过部分反射元件,撞击样品,从样品反射并传播到光谱分析仪。

    APPARATUS FOR CHARACTERIZING FIBER BRAGG GRATINGS
    25.
    发明申请
    APPARATUS FOR CHARACTERIZING FIBER BRAGG GRATINGS 有权
    用于表征光纤布拉格光栅的装置

    公开(公告)号:US20090207401A1

    公开(公告)日:2009-08-20

    申请号:US12343449

    申请日:2008-12-23

    CPC classification number: G02B6/0208 G01M11/3145 G01M11/3172 G02B2006/02166

    Abstract: An apparatus characterizes at least one fiber Bragg grating. The apparatus includes a laser pulse source, an optical spectrum analyzer, and multiple optical paths. A first optical path includes a pulse stretcher and an attenuator. A second optical path optically coupled to the first optical path includes a mirror. A third optical path optically coupled to the first optical path includes a first fiber Bragg grating. A fourth optical path is optically coupled to the second optical path, the third optical path, and the optical spectrum analyzer. A fifth optical path optically coupled to the laser pulse source and the optical spectrum analyzer includes a delay line.

    Abstract translation: 一种装置表征至少一个光纤布拉格光栅。 该装置包括激光脉冲源,光谱分析仪和多个光路。 第一光路包括脉冲展宽器和衰减器。 光耦合到第一光路的第二光路包括反射镜。 光学耦合到第一光路的第三光路包括第一光纤布拉格光栅。 第四光路光耦合到第二光路,第三光路和光谱分析仪。 光耦合到激光脉冲源和光谱分析仪的第五光路包括延迟线。

    SYSTEM AND METHOD FOR USING SLOW LIGHT IN OPTICAL SENSORS
    26.
    发明申请
    SYSTEM AND METHOD FOR USING SLOW LIGHT IN OPTICAL SENSORS 有权
    在光学传感器中使用慢光的系统和方法

    公开(公告)号:US20090059238A1

    公开(公告)日:2009-03-05

    申请号:US12139169

    申请日:2008-06-13

    CPC classification number: G01D5/35303 G01C19/721 Y10T29/49826

    Abstract: An optical sensor includes at least one optical coupler and an optical waveguide in optical communication with the at least one optical coupler. The optical waveguide is configured to receive a first optical signal from the at least one optical coupler. The first optical signal has a group velocity and a phase velocity while propagating through at least a portion of the optical waveguide, the group velocity less than the phase velocity. An interference between the first optical signal and a second optical signal is affected by perturbations to at least a portion of the optical sensor.

    Abstract translation: 光学传感器包括至少一个光耦合器和与所述至少一个光耦合器光学通信的光波导。 光波导被配置为从至少一个光耦合器接收第一光信号。 第一光信号在传播通过光波导的至少一部分时具有组速度和相速度,组速度小于相速度。 第一光信号和第二光信号之间的干扰受到对光传感器的至少一部分的扰动的影响。

    SUPERFLUORESCENT FIBER SOURCE WITH ENHANCED MEAN WAVELENGTH STABILITY
    27.
    发明申请
    SUPERFLUORESCENT FIBER SOURCE WITH ENHANCED MEAN WAVELENGTH STABILITY 有权
    超光纤光源具有增强的平均波长稳定性

    公开(公告)号:US20080144674A1

    公开(公告)日:2008-06-19

    申请号:US11836040

    申请日:2007-08-08

    Abstract: A doped superfluorescent fiber source (SFS) has an enhanced mean wavelength stability. A method stabilizes the mean wavelength of a SFS. The method includes providing an SFS including a doped fiber. The method further includes pumping the SFS with pump light from a pump source having a wavelength dependent on the temperature of the pump source and dependent on the power of the pump light. The method further includes optimizing the length of the fiber to reduce the influence of the pump light wavelength on the stability of the mean wavelength.

    Abstract translation: 掺杂的超荧光光纤源(SFS)具有增强的平均波长稳定性。 一种方法稳定了SFS的平均波长。 该方法包括提供包括掺杂光纤的SFS。 该方法还包括用来自泵浦源的泵浦光泵送SFS,其具有取决于泵浦源的温度的波长并且取决于泵浦光的功率。 该方法还包括优化光纤的长度以减少泵浦光波长对平均波长的稳定性的影响。

    OPTICAL SENSOR HAVING A NON-NEGLIGIBLE SOURCE COHERENCE LENGTH
    28.
    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。

    OPTICAL IMAGE PROCESSING USING MAXIMUM OR MINIMUM PHASE FUNCTIONS
    29.
    发明申请
    OPTICAL IMAGE PROCESSING USING MAXIMUM OR MINIMUM PHASE FUNCTIONS 有权
    使用最大或最小相位函数的光学图像处理

    公开(公告)号:US20120099803A1

    公开(公告)日:2012-04-26

    申请号:US13290982

    申请日:2011-11-07

    CPC classification number: G06E3/003 G01J3/45 G01J11/00

    Abstract: A method utilizes an optical image processing system. The method includes calculating a product of (i) a measured magnitude of a Fourier transform of a complex transmission function of an object or optical image and (ii) an estimated phase term of the Fourier transform of the complex transmission function. The method further includes calculating an inverse Fourier transform of the product, wherein the inverse Fourier transform is a spatial function. The method further includes calculating an estimated complex transmission function by applying at least one constraint to the inverse Fourier transform.

    Abstract translation: 一种方法利用光学图像处理系统。 该方法包括:计算(i)物体或光学图像的复数传播函数的傅里叶变换的测量幅度和(ii)复数传递函数的傅立叶变换的估计相位项的乘积。 该方法还包括计算乘积的逆傅里叶变换,其中逆傅立叶变换是空间函数。 该方法还包括通过对傅里叶逆变换应用至少一个约束来计算估计的复传输函数。

    FIBER OPTIC SENSOR USING A HOLLOW CORE FIBER
    30.
    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。

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