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1.发明授权Laser-driven optical gyroscope having a non-negligible source coherence length 有权具有不可忽略的源相干长度的激光驱动光学陀螺仪公开(公告)号：US08223340B2
公开(公告)日：2012-07-17
申请号：US12767643
申请日：2010-04-26
申请人： Michel J. F. Digonnet , Shanhui Fan , Seth Lloyd
发明人： Michel J. F. Digonnet , Shanhui Fan , Seth Lloyd
IPC分类号： G01C19/72
CPC分类号： G01C19/721
摘要： 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.
摘要翻译： 提供了光纤传感器，配置光纤传感器的方法和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。
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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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公开(公告)号：US08965164B2
公开(公告)日：2015-02-24
申请号：US12575330
申请日：2009-10-07
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 is adjustably axially twisted.
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可调节地轴向扭曲。
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公开(公告)号：US07430345B2
公开(公告)日：2008-09-30
申请号：US11681073
申请日：2007-03-01
CPC分类号： G02F1/0136 , G02B6/02304 , G02B6/02328 , G02F1/0134 , G02F2202/32
摘要： A polarization controller is provided. The polarization controller 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： 提供了偏振控制器。 偏振控制器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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公开(公告)号：US07400806B2
公开(公告)日：2008-07-15
申请号：US11737683
申请日：2007-04-19
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： G02B6/02
CPC分类号： G02B6/02328 , G02B6/02338 , G02B6/02347
摘要： A photonic-bandgap fiber includes a photonic crystal lattice 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 photonic-bandgap fiber further includes a core and a core ring surrounding the core and 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： 光子带隙光纤包括具有第一折射率的材料和形成在其中的区域的图案的光子晶格。 每个区域具有低于第一折射率的第二折射率。 光子带隙光纤还包括芯部和围绕芯部的芯环，并且具有内周边，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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6.发明授权Method for configuring air-core photonic-bandgap fibers free of surface modes 有权用于配置不含表面模式的空芯光子带隙光纤的方法公开(公告)号：US07110650B2
公开(公告)日：2006-09-19
申请号：US10938755
申请日：2004-09-10
IPC分类号： G02B6/20
CPC分类号： G02B6/02328 , A61K31/135 , A61K31/137 , A61K31/4168 , A61K31/498 , A61K31/506 , A61K31/517 , A61K45/06 , G02B6/02338 , Y10T428/2913 , Y10T428/2929 , A61K2300/00
摘要： Coupling of core modes to surface modes in an air-core photonic-bandgap fiber (PBF) can cause large propagation losses. Computer simulations analyze the relationship between the geometry and the presence of surface modes in PBFs having a triangular hole pattern and identify ranges of core characteristic dimensions (e.g., radii) for which the fiber supports no surface modes (i.e., only core modes are present) over the entire wavelength range of the bandgap. In particular, for a hole spacing Λ and a hole radius ρ=0.47Λ, the core supports a single mode and supports no surface modes for core radii between about 0.68Λ and about 1.05Λ. The existence of surface modes can be predicted simply and expediently by studying either the bulk modes alone or the geometry of the fiber without requiring a full analysis of the defect modes.
摘要翻译： 核心模式与空芯光子带隙光纤（PBF）中的表面模式的耦合可能导致较大的传播损耗。 计算机模拟分析了具有三角孔图案的PBF中的几何形状和表面模式的存在之间的关系，并且识别纤维不支持表面模式（即，仅存在核心模式）的核心特征尺寸（例如，半径）的范围， 在带隙的整个波长范围内。 特别地，对于孔间距λ和孔半径rho =0.47λ，核心支持单一模式，并且在大约0.68λ至大约1.05Lambda之间不支持核心半径的表面模式。 表面模式的存在可以通过单独研究单独的体模式或光纤的几何形状而不需要对缺陷模式进行全面分析来简单和方便地预测。
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公开(公告)号：US08068232B2
公开(公告)日：2011-11-29
申请号：US12416767
申请日：2009-04-01
IPC分类号： G01C19/72
CPC分类号： G01C19/727 , G01C19/721
摘要： An optical waveguide gyroscope includes at least one optical coupler configured to receive a first optical signal at a first port, to transmit a second optical signal to a second port, and to transmit a third optical signal to a third port. The optical waveguide gyroscope further includes a plurality of resonant waveguides optically coupled to the second port and the third port. The resonant waveguides are generally adjacent to one another and optically coupled to one another. At least a portion of the second optical signal propagates from the second port to the third port by propagating through the plurality of resonant waveguides, and at least a portion of the third optical signal propagates from the third port to the second port by propagating through the plurality of resonant waveguides. The at least a portion of the second optical signal propagates through each resonant waveguide of the plurality of resonant waveguides in a clockwise direction and the at least a portion of the third optical signal propagates through each resonant waveguide of the plurality of resonant waveguides in a counterclockwise direction.
摘要翻译： 光波导陀螺仪包括至少一个光耦合器，被配置为在第一端口处接收第一光信号，以将第二光信号传输到第二端口，并将第三光信号传输到第三端口。 光波导陀螺仪还包括光耦合到第二端口和第三端口的多个谐振波导。 谐振波导通常彼此相邻并且彼此光学耦合。 通过传播多个谐振波导，第二光信号的至少一部分从第二端口传播到第三端口，并且第三光信号的至少一部分从第三端口传播到第二端口，传播通过 多个谐振波导。 第二光信号的至少一部分沿顺时针方向传播通过多个谐振波导的每个谐振波导，并且第三光信号的至少一部分沿逆时针方向传播通过多个谐振波导的每个谐振波导 方向。
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公开(公告)号：US07489848B2
公开(公告)日：2009-02-10
申请号：US11971181
申请日：2008-01-08
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
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 surrounding the core region and 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围绕芯区域的芯环，并且具有内周边，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：US08797540B2
公开(公告)日：2014-08-05
申请号：US13224985
申请日：2011-09-02
申请人： Michel J. F. Digonnet , Shanhui Fan , He Wen , Matthew Terrel
发明人： Michel J. F. Digonnet , Shanhui Fan , He Wen , Matthew Terrel
IPC分类号： G01B9/02
CPC分类号： G02B6/02076 , G01D5/35316 , G01J1/0425 , G01J1/4228 , G01K11/3206 , G01L1/246 , G02B5/205 , G02B6/02204 , G02B6/29353
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US08705044B2
公开(公告)日：2014-04-22
申请号：US13237591
申请日：2011-09-20
IPC分类号： G01C19/72
CPC分类号： G01C19/727 , G01C19/721
摘要： A method for detecting rotation includes providing a plurality of resonant waveguides generally adjacent to one another and optically coupled to one another. Each resonant waveguide of the plurality of resonant waveguides is configured to allow light to propagate along the resonant waveguide in a planar path. The method further includes propagating light along each path in a clockwise direction or along each path in a counterclockwise direction.
摘要翻译： 一种用于检测旋转的方法包括提供大体上彼此相邻并且彼此光学耦合的多个谐振波导。 多个谐振波导的每个谐振波导被配置为允许光在平面路径中沿着谐振波导传播。 该方法还包括沿着每个路径沿顺时针方向沿着逆时针方向沿着每个路径传播光。
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