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1.发明授权公开(公告)号：US07477672B2
公开(公告)日：2009-01-13
申请号：US11508550
申请日：2006-08-22
CPC分类号： H01S3/0675 , H01S3/06716 , H01S3/06791 , H01S3/07 , H01S3/094003 , H01S3/094011 , H01S3/1055
摘要： Photodarkening in active fiber or waveguide devices (e.g. lasers, amplifiers, and incoherent sources such as ASE sources) can be reduced by altering the dopant concentration along the length of the doped fiber. A fiber or waveguide device includes two or more intentionally doped fiber or waveguide sections having different concentrations of one or more dopants. The dopants provide optical gain responsive to pump radiation provided to the fiber device by a pump source. A first optical intensity in a first of the fiber or waveguide sections is greater than a second optical intensity in a second of the fiber or waveguide sections. A first dopant concentration in the first fiber or waveguide section is lower than a second dopant concentration in the second fiber or waveguide section. Thus the dopant concentration is reduced in sections of the fiber or waveguide device having a higher optical intensity. The optical intensity can be due to pump radiation and/or signal radiation. Reduced dopant concentration in regions of high optical intensity reduces photodarkening.
摘要翻译： 通过改变沿着掺杂光纤的长度的掺杂剂浓度，可以减少有源光纤或波导器件（例如，激光器，放大器和非相干源，例如ASE源）中的光标。 光纤或波导器件包括具有不同浓度的一种或多种掺杂剂的两个或更多个有意掺杂的光纤或波导部分。 掺杂剂通过泵浦源提供响应于提供给光纤装置的泵浦辐射的光学增益。 第一光纤或波导部分中的第一光强度大于第二光纤或波导部分中的第二光强度。 第一光纤或波导部分中的第一掺杂剂浓度低于第二光纤或波导部分中的第二掺杂剂浓度。 因此，具有较高光强度的光纤或波导器件的部分的掺杂剂浓度降低。 光强度可能是由于泵浦辐射和/或信号辐射。 高光强度区域的掺杂剂浓度降低会降低光暗化。
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公开(公告)号：US09170599B2
公开(公告)日：2015-10-27
申请号：US13290982
申请日：2011-11-07
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US08249400B2
公开(公告)日：2012-08-21
申请号：US12587551
申请日：2009-10-08
申请人： Onur Kilic , Michel J. F. Digonnet , Gordon S. Kino , Olav Solgaard , Shrestha Basu Mallick , Onur Can Akkaya
发明人： Onur Kilic , Michel J. F. Digonnet , Gordon S. Kino , Olav Solgaard , Shrestha Basu Mallick , Onur Can Akkaya
IPC分类号： G02B6/00
摘要： An optical structure on an optical fiber and a method of fabrication is provided. The optical structure includes an end of an optical fiber and a layer formed on the end of the optical fiber. The layer comprises one or more first portions having a first optical pathlength in a direction perpendicular to the layer and one or more second portions having a second optical pathlength in the direction perpendicular to the layer, the second optical pathlength different from the first optical pathlength.
摘要翻译： 提供光纤上的光学结构和制造方法。 光学结构包括光纤的端部和形成在光纤端部上的层。 该层包括一个或多个在垂直于该层的方向上具有第一光程长度的第一部分，以及一个或多个第二部分在垂直于层的方向上具有第二光程长度，第二光程长度不同于第一光程长度。
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公开(公告)号：US08233151B2
公开(公告)日：2012-07-31
申请号：US13230740
申请日：2011-09-12
IPC分类号： G01C19/72
CPC分类号： G01C19/722 , G02B6/02328 , G02B6/02361
摘要： 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.
摘要翻译： 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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5.发明授权Apparatus for measuring a frequency-domain optical coherence tomography power spectrum from a sample 有权用于从样本测量频域光学相干断层摄影功率谱的装置公开(公告)号：US08219350B2
公开(公告)日：2012-07-10
申请号：US13224555
申请日：2011-09-02
CPC分类号： A61B5/0066 , A61B5/0073 , A61B5/7257 , G01B9/02044 , G01B9/02083 , G01B9/02091 , G01N21/4795
摘要： An apparatus is provided for measuring a frequency-domain optical coherence tomography power spectrum from a sample. The apparatus includes a partially reflective element configured to be optically coupled to a light source and to the sample. A first portion of light from the light source is configured to be reflected by the partially reflective element. A second portion of light from the light source is configured to propagate through the partially reflective element, to impinge the sample, and to reflect from the sample. The apparatus is configured to receive the first and second portions of light and to measure the frequency-domain optical coherence tomography power spectrum in response to the first portion of light and the second portion of light.
摘要翻译： 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。 该装置包括被配置为光耦合到光源和样品的部分反射元件。 来自光源的第一部分光被构造成被部分反射元件反射。 来自光源的第二部分光被配置成传播通过部分反射元件，以撞击样品并从样品反射。 该装置被配置为接收第一和第二部分光并且响应于第一部分光和第二部分光来测量频域光学相干断层摄影功率谱。
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公开(公告)号：US08160406B2
公开(公告)日：2012-04-17
申请号：US12874104
申请日：2010-09-01
摘要： An acoustic sensor includes at least one structure including at least one photonic crystal slab and an optical fiber optically coupled to the at least one photonic crystal slab, and having at least one optical resonance with a resonance frequency and a resonance lineshape. The acoustic sensor further includes a housing mechanically coupled to the at least one structure. At least one of the resonance frequency and the resonance lineshape is responsive to acoustic waves incident upon the housing.
摘要翻译： 声学传感器包括至少一个结构，其包括至少一个光子晶体板和光学耦合到所述至少一个光子晶体板的光纤，并且具有至少一个具有谐振频率和谐振线形的光学谐振。 声学传感器还包括机械地联接到所述至少一个结构的壳体。 谐振频率和谐振线形形状中的至少一个响应于入射到壳体上的声波。
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公开(公告)号：US07742665B2
公开(公告)日：2010-06-22
申请号：US11828277
申请日：2007-07-25
IPC分类号： G02B6/42
CPC分类号： G02B6/02328 , G02B6/02052 , G02B6/02304 , G02B6/02347 , G02B6/02376 , G02B6/2552
摘要： An optical filter and methods of filtering are provided. The optical filter includes a hollow-core fiber including a first portion and a second portion. The first portion includes a hollow core having a first diameter and a cladding having a second diameter. The second portion includes a hollow core having a third diameter smaller than the first diameter and a cladding having a fourth diameter smaller than the second diameter.
摘要翻译： 提供滤光器和滤光器。 滤光器包括中空纤维，其包括第一部分和第二部分。 第一部分包括具有第一直径的中空芯和具有第二直径的包层。 第二部分包括具有小于第一直径的第三直径的中空芯和具有小于第二直径的第四直径的包层。
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公开(公告)号：US07643952B2
公开(公告)日：2010-01-05
申请号：US11396935
申请日：2006-04-03
摘要： A method processes an optical image. The method includes providing a measured magnitude of the Fourier transform of a two-dimensional complex transmission function. The method further includes providing an estimated phase term of the Fourier transform of the two-dimensional complex transmission function. The method further includes multiplying the measured magnitude and the estimated phase term to generate an estimated Fourier transform of the two-dimensional 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 two-dimensional complex transmission function by applying at least one constraint to the inverse Fourier transform.
摘要翻译： 一种处理光学图像的方法。 该方法包括提供二维复数传输函数的傅立叶变换的测量幅度。 该方法还包括提供二维复数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二维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二维复传输函数。
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公开(公告)号：US07620283B2
公开(公告)日：2009-11-17
申请号：US12194490
申请日：2008-08-19
CPC分类号： G02F1/0136 , G02B6/02304 , G02B6/02328 , G02F1/0134 , G02F2202/32
摘要： An optical device includes a hollow-core photonic-bandgap fiber, wherein at least a portion of the hollow-core photonic-bandgap fiber has a longitudinal axis and is twisted about the longitudinal axis.
摘要翻译： 光学器件包括中空光子带隙光纤，其中至少一部分中空光子带隙光纤具有纵向轴线并围绕纵向轴线扭曲。
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10.发明授权公开(公告)号：US07385683B2
公开(公告)日：2008-06-10
申请号：US11130418
申请日：2005-05-16
IPC分类号： G01N21/00
CPC分类号： G02B6/0208 , G01M11/3145 , G01M11/3172 , G02B2006/02166
摘要： A method determines a complex reflection impulse response of a fiber Bragg grating. The method includes providing a measured amplitude of a complex reflection spectrum of the fiber Bragg grating. The method further includes providing an estimated phase term of the complex reflection spectrum. The method further includes multiplying the measured amplitude and the estimated phase term to generate an estimated complex reflection spectrum. The method further includes calculating an inverse Fourier transform of the estimated complex reflection spectrum, wherein the inverse Fourier transform is a function of time. The method further includes calculating an estimated complex reflection impulse response by applying at least one constraint to the inverse Fourier transform of the estimated complex reflection spectrum.
摘要翻译： 一种方法确定光纤布拉格光栅的复反射脉冲响应。 该方法包括提供光纤布拉格光栅的复反射光谱的测量幅度。 该方法还包括提供复反射谱的估计相位项。 该方法还包括将测量的幅度和估计的相位项相乘以产生估计的复反射谱。 该方法还包括计算估计的复反射谱的傅立叶逆变换，其中逆傅立叶变换是时间的函数。 该方法还包括通过对估计的复反射光谱的傅里叶逆变换应用至少一个约束来计算估计的复反射脉冲响应。
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