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公开(公告)号：US20090195785A1
公开(公告)日：2009-08-06
申请号：US12271760
申请日：2008-11-14
IPC分类号： G01C19/72
CPC分类号： G01C19/721
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20100220387A1
公开(公告)日：2010-09-02
申请号：US12719778
申请日：2010-03-08
IPC分类号： H01S3/09
CPC分类号： H01S3/06754 , H01S3/0064 , H01S3/06795 , H01S3/094023 , H01S3/10007 , H01S3/10069 , H01S3/1608
摘要： A doped superfluorescent fiber source (SFS) has an enhanced mean wavelength stability. A method stabilizes the mean wavelength of a SFS. The method 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 length of the fiber is selected to compromise between reduction of the dependence of the mean wavelength on the pump light power and reduction of the contribution of the forward amplified spantaneous emission light produced by the fiber to the output light.
摘要翻译： 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。 该方法包括用来自泵浦源的泵浦光泵送SFS，其具有取决于泵浦光源的温度的波长并且取决于泵浦光的功率。 纤维的长度被选择为在平均波长对泵浦光功率的依赖性的降低和由光纤产生的向前放大的自发发射光对输出光的贡献的降低之间的折中。
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公开(公告)号：US20090175584A1
公开(公告)日：2009-07-09
申请号：US12356510
申请日：2009-01-20
申请人： Hyang Kyun Kim , Shanhui Fan , Gordon S. Kino , Jonghwa Shin , Michel J.F. Digonnet , Vinayak Dangui
发明人： Hyang Kyun Kim , Shanhui Fan , Gordon S. Kino , Jonghwa Shin , Michel J.F. Digonnet , Vinayak Dangui
IPC分类号： G02B6/032
CPC分类号： G02B6/02328 , G02B6/02338 , G02B6/02347
摘要： An optical fiber includes a cladding with a material having a first refractive index and a pattern of regions formed therein. Each of the regions has a second refractive index lower than the first refractive index. The optical fiber further includes a core region and a core ring having an inner perimeter, an outer perimeter, and a thickness between the inner perimeter and the outer perimeter. The thickness is sized to reduce the number of ring surface modes supported by the core ring.
摘要翻译： 光纤包括具有第一折射率的材料和其中形成的区域的图案的包层。 每个区域具有低于第一折射率的第二折射率。 光纤还包括芯区域和芯环，其具有内周边，外周边和内周边与外周边之间的厚度。 厚度的大小可以减小由芯环支撑的环表面模式的数量。
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公开(公告)号：US07050169B2
公开(公告)日：2006-05-23
申请号：US10645331
申请日：2003-08-21
IPC分类号： G01N21/59
CPC分类号： G01N21/21 , G01J11/00 , G01N21/4788 , G01N21/636 , G01N2021/4723 , G01N2021/4735
摘要： A method for measuring a physical function forms a symmetric composite function by combining the physical function with a reference function. The method obtains a Fourier transform of the symmetric composite function. The method calculates an inverse Fourier transform of the obtained Fourier transform, wherein the calculated inverse Fourier transform provides information regarding the physical function. The physical function can be a nonlinearity profile of a sample with at least one sample surface. The physical function can alternatively by a sample temporal waveform of a sample optical pulse.
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公开(公告)号：US20120300214A1
公开(公告)日：2012-11-29
申请号：US13570793
申请日：2012-08-09
CPC分类号： G01C19/56 , G01C19/5712 , G01C19/5776 , Y10T29/49609
摘要： A gyroscope and a method of detecting rotation are provided. The gyroscope includes a structure configured to be driven to move about a drive axis. The structure is further configured to move about a sense axis in response to a Coriolis force generated by rotation of the structure about a rotational axis while moving about the drive axis. The structure further includes at least one first torsional spring extending generally along the drive axis and at least one second torsional spring extending generally along the sense axis. The gyroscope further includes an optical sensor system configured to optically measure movement of the structure about the sense axis.
摘要翻译： 提供了陀螺仪和旋转检测方法。 陀螺仪包括构造成被驱动以围绕驱动轴线移动的结构。 该结构进一步构造成响应于围绕驱动轴线移动而围绕旋转轴线的旋转旋转产生的科里奥利力而围绕感测轴移动。 该结构还包括大致沿着驱动轴线延伸的至少一个第一扭转弹簧和大致沿着感测轴线延伸的至少一个第二扭转弹簧。 陀螺仪还包括光学传感器系统，其被配置为光学地测量围绕感测轴的结构的移动。
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6.发明申请APPARATUS AND METHOD FOR PROCESSING OPTICAL COHERENCE TOMOGRAPHY IMAGING DATA 有权用于处理光学相干图像成像数据的装置和方法公开(公告)号：US20120281899A1
公开(公告)日：2012-11-08
申请号：US13494303
申请日：2012-06-12
CPC分类号： A61B5/0066 , A61B5/0073 , A61B5/7257 , G01B9/02044 , G01B9/02083 , G01B9/02091 , G01N21/4795
摘要： An apparatus and method process optical coherence tomography (OCT) imaging data from a sample. The method includes using a magnitude spectrum and an estimated phase term of a complex spatial Fourier transform of a complex intermediate function to generate an estimated complex spatial Fourier transform. The method further includes calculating an inverse Fourier transform of the estimated complex spatial Fourier transform and calculating an estimated intermediate function by applying at least one constraint to the inverse Fourier transform. The apparatus includes a partially reflective element configured to reflect a first portion of light and to allow a second portion of light to propagate through the partially reflective element and to reflect from the sample. The apparatus further includes a detector that measures the OCT power spectrum in response to the first and second portions of light.
摘要翻译： 来自样品的装置和方法处理光学相干断层扫描（OCT）成像数据。 该方法包括使用复数中间函数的复数空间傅里叶变换的幅度谱和估计相位项来生成估计的复数空间傅里叶变换。 该方法还包括通过对傅立叶逆变换应用至少一个约束来计算所估计的复数空间傅里叶变换的逆傅立叶变换并计算估计的中间函数。 该装置包括部分反射元件，其被配置为反射第一部分光并且允许光的第二部分传播通过部分反射元件并从样品反射。 该装置还包括响应于第一和第二部分光量测量OCT功率谱的检测器。
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公开(公告)号：US20120141081A1
公开(公告)日：2012-06-07
申请号：US13313264
申请日：2011-12-07
IPC分类号： G02B6/036
CPC分类号： G02B6/02042 , G02B6/02328 , G02B6/02338 , G02B6/02347 , G02B6/2821
摘要： An optical fiber includes a cladding, a first core, and a second core. At least one of the first core and the second core is hollow and is substantially surrounded by the cladding. At least a portion of the first core is generally parallel to and spaced from at least a portion of the second core. The optical fiber includes a defect substantially surrounded by the cladding, the defect increasing a coupling coefficient between the first core and the second core.
摘要翻译： 光纤包括包层，第一芯和第二芯。 第一芯和第二芯中的至少一个是中空的并且基本上被包层包围。 第一芯的至少一部分通常与第二芯的至少一部分平行并间隔开。 光纤包括基本上被包层围绕的缺陷，缺陷增加了第一芯和第二芯之间的耦合系数。
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公开(公告)号：US20110142397A1
公开(公告)日：2011-06-16
申请号：US12941743
申请日：2010-11-08
IPC分类号： G02B6/26
CPC分类号： G02B6/02042 , G02B6/02328 , G02B6/02338 , G02B6/02347 , G02B6/2821
摘要： An optical fiber includes a cladding, a first core, and a second core. At least one of the first core and the second core is hollow and is substantially surrounded by the cladding. At least a portion of the first core is generally parallel to and spaced from at least a portion of the second core. The optical fiber includes a defect substantially surrounded by the cladding, the defect increasing a coupling coefficient between the first core and the second core.
摘要翻译： 光纤包括包层，第一芯和第二芯。 第一芯和第二芯中的至少一个是中空的并且基本上被包层包围。 第一芯的至少一部分通常与第二芯的至少一部分平行并间隔开。 光纤包括基本上被包层围绕的缺陷，缺陷增加了第一芯和第二芯之间的耦合系数。
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公开(公告)号：US20100067827A1
公开(公告)日：2010-03-18
申请号：US12623322
申请日：2009-11-20
IPC分类号： G06K9/36
摘要： A method utilizes an optical image processing system. The method includes providing a measured magnitude of the Fourier transform of a complex transmission function of an object or optical image. The method further includes providing an estimated phase term of the Fourier transform of the complex transmission function. The method further includes multiplying the measured magnitude and the estimated phase term to generate an estimated Fourier transform of the complex transmission function. The method further includes calculating an inverse Fourier transform of the estimated Fourier transform, 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.
摘要翻译： 一种方法利用光学图像处理系统。 该方法包括提供物体或光学图像的复数传输函数的傅里叶变换的测量幅度。 该方法还包括提供复传输函数的傅立叶变换的估计相位项。 该方法还包括将测量的幅度和估计的相位项相乘以产生复数传输函数的估计傅里叶变换。 该方法还包括计算傅立叶逆变换的傅立叶逆变换，其中逆傅里叶变换是空间函数。 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。
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公开(公告)号：US20080204726A1
公开(公告)日：2008-08-28
申请号：US12116871
申请日：2008-05-07
IPC分类号： G01N21/00
CPC分类号： G02B6/0208 , G01M11/3145 , G01M11/3172 , G02B2006/02166
摘要： 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.
摘要翻译： 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。
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