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公开(公告)号：US5457532A
公开(公告)日：1995-10-10
申请号：US250970
申请日：1994-05-31
申请人： Richard J. August , Kevin B. Dimond , John R. Feth , Clarence E. Laskoskie , Lee K. Strandjord , Bogdan Szafraniec
发明人： Richard J. August , Kevin B. Dimond , John R. Feth , Clarence E. Laskoskie , Lee K. Strandjord , Bogdan Szafraniec
CPC分类号： G01C19/722 , G01C19/72 , G02F1/0134 , G02B6/4457
摘要： A rotation sensor for sensing rotation, particularly about an axis of a coiled optical fiber, wherein the coiled optical fiber has with light waves propagating in opposite directions in the coiled optical fiber, the phase relationship of the counter-propagating light waves providing a basis for indicating rotation of the sensor. A portion of the coiled optical fiber is a part of and affected by a bias optical phase modulator which causes a varying phase relationship between the light waves at a fundamental frequency. However, the varying phase relation ship has at least one harmonic which is due to mechanical vibration of the optical fiber that is a part of the modulator. This harmonic contributes to an erroneous indication of rotation. The amplitude of such harmonic is reduced by lowering the Q of the resonating fiber. This is effected by applying a damping material to the optical fiber and a portion of the modulator. A photodetector detects the counter-propagating waves and sends a corresponding electrical signal on to a signal component selection device that provides an indication of sensed rotation, including error due to the mechanically resonating optical fiber of the modulator.
摘要翻译： 一种用于感测旋转的旋转传感器，特别是围绕卷绕的光纤的轴线的旋转传感器，其中线圈式光纤具有在线圈化光纤中沿相反方向传播的光波，反向传播光波的相位关系为 指示传感器的旋转。 卷绕的光纤的一部分是偏置光相位调制器的一部分并受其影响，该偏置光相位调制器导致基频处的光波之间的变化的相位关系。 然而，变化的相位关系船具有至少一个谐波，其归因于作为调制器的一部分的光纤的机械振动。 这种谐波有助于错误的旋转指示。 通过降低谐振光纤的Q来减小这种谐波的振幅。 这通过将阻尼材料施加到光纤和调制器的一部分来实现。 光电检测器检测反向传播波，并将相应的电信号发送到信号分量选择装置，信号分量选择装置提供感测旋转的指示，包括由调制器的机械谐振光纤引起的误差。
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公开(公告)号：US4725113A
公开(公告)日：1988-02-16
申请号：US768540
申请日：1985-08-22
申请人： Chin-Lung Chang , John R. Feth
发明人： Chin-Lung Chang , John R. Feth
CPC分类号： G02F1/0134 , G02B6/105 , G02B6/2733 , G02B6/2766
摘要： The cladding and a portion of the core of a length of optical fiber are removed to form an interaction region. A form birefringent stack is positioned on the exposed core. The refractive index of the stack for polarizations parallel to the plane of the interaction region is approximately equal to the refractive index of the fiber core so that these polarizations radiate from the fiber. The refractive index of the stack for the polarization normal to the plane fo the interaction region is approximately equal to the refractive index of the cladding so that this polarization remains guided by the fiber. A photodetector forms an error signal from the polarization radiated from the fiber, and control circuitry processes the error signal to drive a polarization controller that adjusts the polarization of light input to the polarizer to minimize the error signal.
摘要翻译： 去除包层和纤维长度的纤芯的一部分以形成相互作用区域。 形式双折射堆叠被定位在暴露的芯上。 平行于相互作用区域的平面的极化的折射率近似等于纤维芯的折射率，使得这些极化从纤维辐射。 垂直于相互作用区域的平面的极化的折射率近似等于包层的折射率，使得该极化保持由光纤引导。 光电检测器从从光纤辐射的偏振形成误差信号，并且控制电路处理误差信号以驱动偏振控制器，该偏振控制器调节输入到偏振器的光的极化，以使误差信号最小化。
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公开(公告)号：US5559908A
公开(公告)日：1996-09-24
申请号：US468783
申请日：1995-06-06
申请人： Richard J. August , Kevin B. Dimond , John R. Feth , Clarence E. Laskoskie , Lee K. Strandjord , Bogdan Szafraniec
发明人： Richard J. August , Kevin B. Dimond , John R. Feth , Clarence E. Laskoskie , Lee K. Strandjord , Bogdan Szafraniec
CPC分类号： G01C19/722 , G01C19/72 , G02F1/0134 , G02B6/4457
摘要： A method for damping an optical fiber on a bias optical phase modulator having two optical fiber leads comprises the steps of securing the bias phase modulator, applying a silicone or acrylate type of substance to an outward facing surface of the fiber wound on the bias phase modulator means, applying the silicone or acrylate type of substance on the two optical fiber leads for at least 0.5 inch (1.28 cm.) along each lead which is apart from the place where the optical fiber wound on the bias phase modulator, frequently brushing or smoothing out the applied silicone or acrylate type of substance until the substance beings to set, and drying the substance on the optical fiber until the substance is cured. The applied damping material significantly reduces an amplitude of a frequency caused by mechanical vibrations in a rotation sensor.
摘要翻译： 一种用于在具有两个光纤引线的偏置光学相位调制器上对光纤进行阻尼的方法包括以下步骤：确定偏置相位调制器，将硅或丙烯酸酯类型的物质施加到缠绕在偏置相位调制器上的光纤向外的表面上 意味着将两种光纤引线上的硅酮或丙烯酸酯类型的物质沿着沿着偏离相位调制器上缠绕光纤的位置的每个引线至少0.5英寸（1.28厘米）施加，经常刷涂或平滑 将所施用的硅酮或丙烯酸酯类物质直到物质固化，并干燥光纤上的物质直到物质固化。 所施加的阻尼材料显着降低由旋转传感器中的机械振动引起的频率振幅。
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公开(公告)号：US5327213A
公开(公告)日：1994-07-05
申请号：US791719
申请日：1991-11-14
申请人： James N. Blake , John R. Feth
发明人： James N. Blake , John R. Feth
CPC分类号： G01C19/72
摘要： An optical fiber rotation sensor having configurations thereof chosen with respect to the source autocorrelation. Both amplitude related and intensity related phase errors due to polarization mode coupling can be eliminated or reduced economically.
摘要翻译： 一种光纤旋转传感器，其具有相对于源自相关选择的配置。 由于偏振模耦合引起的振幅相关和强度相关误差可以经济地消除或降低。
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公开(公告)号：US4711525A
公开(公告)日：1987-12-08
申请号：US731692
申请日：1985-05-08
申请人： John R. Feth
发明人： John R. Feth
CPC分类号： G02B6/105
摘要： An optical fiber has an absorbing jacket to absorb cladding modes in a very short distance along the optical fiber to prevent cladding modes from having a significant affect upon signal quality. The absorbing jacket cooperates with a form birefringent polarizing fiber, which radiates light of one polarization out of the core into the cladding, to provide light of a single polarization suitable for use in fiber optic sensing systems and communications systems whose operational characteristics are polarization dependent.
摘要翻译： 光纤具有吸收套，以沿着光纤在非常短的距离内吸收包层模，以防止包层模式对信号质量产生显着影响。 吸收护套与双折射偏振光纤配合，其将一个极化的光从芯中散射到包层中，以提供适合用于其操作特性偏振相关的光纤感测系统和通信系统的单极化光。
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公开(公告)号：US4695123A
公开(公告)日：1987-09-22
申请号：US767553
申请日：1985-08-20
申请人： Chin-Lung Chang , John R. Feth
发明人： Chin-Lung Chang , John R. Feth
CPC分类号： G02B6/2726 , G02F1/0134 , Y10S359/90
摘要： The cladding and a portion of the core of apparatus of a length of optical fiber are removed to form an interaction region where the fiber will not guide a light wave. A metal thin layer placed on the exposed core and a portion of the cladding. Polarizations perpendicular to the metal film couple into the metal film to form a surface plasma wave that propagates parallel to the fiber while parallel polarizations radiate through the metal film. The surface plasma wave couples energy back into the fiber so that the throughput of the polarizer is only the perpendicular polarization component. A photodetector forms an error signal from the polarization radiated from the fiber, and control circuitry processes the error signal to drive a polarization controller that adjusts the polarization of light input to the polarizer to minimize the error signal and maximize the intensity of the desired polarization output from the polarizer.
摘要翻译： 去除包层和一段长度的光纤的设备的芯部的一部分以形成纤维不会引导光波的相互作用区域。 放置在暴露的芯部和包层的一部分上的金属薄层。 垂直于金属膜的偏振耦合到金属膜中以形成平行于纤维传播的表面等离子体波，同时平行偏振通过金属膜辐射。 表面等离子波将能量耦合回到光纤中，使得偏振器的吞吐量仅为垂直偏振分量。 光电检测器从从光纤辐射的偏振形成误差信号，并且控制电路处理误差信号以驱动偏振控制器，该偏振控制器调节输入到偏振器的光的偏振，以最小化误差信号并使所需偏振输出的强度最大化 从偏振器。
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7.发明授权Method of preparing optical fiber for fusion splicing and method of forming a fusion splice 失效用于熔接的光纤的制备方法和形成熔接的方法
公开(公告)号：US6139196A
公开(公告)日：2000-10-31
申请号：US189380
申请日：1998-11-09
申请人： John R. Feth , Richard L. Niemeyer
发明人： John R. Feth , Richard L. Niemeyer
CPC分类号： G02B6/245 , G02B6/2551
摘要： A method of preparing an optical fiber for fusion splicing comprising the steps of providing an optical fiber having a fiber jacket and an end, removing a predetermined bulk of the fiber jacket from an area adjacent the end while one of substantially simultaneously moving gas over the area and exhausting gas from the area.
摘要翻译： 一种制备用于熔接的光纤的方法，包括以下步骤：提供具有光纤护套和端部的光纤，从邻近端部的区域移除预定体积的光纤护套，同时在该区域上的基本同时移动的气体之一 并从该地区排出气体。
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8.发明授权
公开(公告)号：US6126326A
公开(公告)日：2000-10-03
申请号：US188839
申请日：1998-11-09
申请人： John R. Feth
发明人： John R. Feth
CPC分类号： G02B6/2555 , G02B6/2551 , G02B6/4458
摘要： An optical circuit comprising first and second fiber optic components, an optical fiber having a first end coupled with the first fiber optic component and a second end coupled with the second fiber optic component, and a helical strand of the optical fiber intermediate the first and second components.
摘要翻译： 一种包括第一和第二光纤部件的光学电路，具有与第一光纤部件耦合的第一端和与第二光纤部件耦合的第二端的光纤，以及在第一和第二光纤部件之间的光纤的螺旋线 组件。
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公开(公告)号：US5881185A
公开(公告)日：1999-03-09
申请号：US697050
申请日：1996-08-19
CPC分类号： G02B6/4246 , G02B6/264 , G02B6/274 , G02B6/2786 , G02B6/4206
摘要： Aligned birefringent fiber segments are reliably and efficiently rotated approximately 45.degree. relative to each other until the extinction ratio measurement at the output is approximately 0 dB, then birefringent fibers are fused. To determine the extinction ratio, a Wollaston analyzer is placed at the output of the birefringent fiber. Photodetectors placed on each output of the Wollaston analyzer, substantially simultaneously measure the output intensity of each propagation axis.
摘要翻译： 对准的双折射光纤段相对于彼此可靠且有效地旋转大约45度，直到输出处的消光比测量值大约为0dB，则双折射光纤被熔化。 为了确定消光比，将Wollaston分析仪置于双折射光纤的输出处。 放置在Wollaston分析仪的每个输出上的光电检测器基本上同时测量每个传播轴的输出强度。
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公开(公告)号：US5377283A
公开(公告)日：1994-12-27
申请号：US49185
申请日：1993-04-16
申请人： James N. Blake , John R. Feth , Bogdan Szafraniec
发明人： James N. Blake , John R. Feth , Bogdan Szafraniec
CPC分类号： G01C19/721
摘要： An optical fiber rotation sensor having an ordinary single mode fiber coil with a depolarizer in series therewith configured with component optical path lengths therein and birefringent axes relationships therein chosen with respect to the source autocorrelation. Amplitude related phase errors due to polarization mode coupling can be eliminated or reduced economically, and signal fading can be substantially prevented.
摘要翻译： 一种具有普通单模光纤线圈的光纤旋转传感器，其具有串联的去偏振器，其中配置有分量光路长度，并且相对于源自相关选择双折射轴关系。 由于偏振模耦合引起的振幅相关误差可以经济地消除或降低，并且可以显着地防止信号衰落。
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