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1. 发明授权

US5479094A Polarization insensitive current and magnetic field optic sensor 失效
标题翻译：极化不敏感电流和磁场光学传感器
公开(公告)号：US5479094A
公开(公告)日：1995-12-26
申请号：US427461
申请日：1995-04-24
申请人： Ronald D. Esman , Alan D. Kersey , Michael J. Marrone
发明人： Ronald D. Esman , Alan D. Kersey , Michael J. Marrone
IPC分类号： G01R15/24 , G01R33/032 , G01R33/32
CPC分类号： G01R33/0322 , G01R15/246
摘要： A sensor system includes a sensor head, an optical source, and a measurement apparatus. The sensor head includes a beamsplitter having first, second, third, and fourth ports, the beamsplitter being responsive to light selectively applied to the first, second and third ports for passing light of a first input polarization state from the first port to the second port, for passing light of a second input polarization state orthogonal to the first input polarization state from the first port to the third port, and for collectively passing light of a first output polarization state and light of a second output polarization state orthogonal to the first output polarization state from the third port to the fourth port. The optical source means provides light to the first port. The sensor head further includes a bidirectional polarimetric sensor responsive to polarized light output by the beamsplitter at the second and third ports and to an electromagnetic field applied to the polarimetric sensor for producing first polarized light at said third port and for producing second polarized light at said second port. The first and second polarized light have polarization states each of which varies as a function of the electromagnetic field and the polarization state of the light output by the beamsplitter at the other one of the second and third ports. The measurement means is responsive to light from the fourth port for producing an output signal indicative of the electromagnetic field strength.
摘要翻译：传感器系统包括传感器头，光源和测量装置。传感器头包括具有第一，第二，第三和第四端口的分束器，分束器响应于选择性地施加到第一，第二和第三端口的光，以将第一输入偏振状态的光从第一端口传递到第二端口用于将与第一输入偏振态正交的第二输入偏振状态的光从第一端口传递到第三端口，并且用于共同地将第一输出偏振状态的光和与第一输出正交的第二输出偏振状态的光通过从第三端口到第四端口的极化状态。光源装置向第一端口提供光。传感器头还包括响应于在第二和第三端口处由分束器输出的偏振光的双向偏振光学传感器，以及施加到偏振传感器的电磁场，用于在所述第三端口产生第一偏振光，并在所述第三端口处产生第二偏振光第二个港口。第一和第二偏振光具有各自的极化状态，其各自随着电磁场和由分束器在第二和第三端口中的另一个输出的光的偏振状态而变化。测量装置响应于来自第四端口的光，以产生指示电磁场强度的输出信号。

2. 发明授权

US5434501A Polarization insensitive current and magnetic field optic sensor 失效
标题翻译：极化不敏感电流和磁场光学传感器
公开(公告)号：US5434501A
公开(公告)日：1995-07-18
申请号：US235842
申请日：1994-04-29
申请人： Ronald D. Esman , Alan D. Kersey , Michael J. Marrone
发明人： Ronald D. Esman , Alan D. Kersey , Michael J. Marrone
IPC分类号： G01R15/24 , G01R33/032 , G01R33/32
CPC分类号： G01R33/0322 , G01R15/246
摘要： A sensor system includes a sensor head, an optical source, and a measurement apparatus. The sensor head includes a beamsplitter having first, second, third, and fourth ports, the beamsplitter being responsive to light selectively applied to the first, second and third ports for passing light of a first polarization state from the first port to the second port, for passing light of a second polarization state from the first port to the third port, for passing light of the second polarization state from the second port to the fourth port, and for passing light of the first polarization state from the third port to the fourth port. The optical source means provides light to the first port. The sensor head further includes a bidirectional polarimetric sensor responsive to polarized light output by the beamsplitter at the second and third ports and to an electromagnetic field applied to the polarimetric sensor for producing first polarized light at said third port and for producing second polarized light at said second port. The first and second polarized light have polarization states each of which varies as a function of the electromagnetic field and the polarization state of the light output by the beamsplitter at the other one of the second and third ports. The measurement means is responsive to light from the fourth port for producing an output signal indicative of the electromagnetic field strength.
摘要翻译：传感器系统包括传感器头，光源和测量装置。传感器头包括具有第一，第二，第三和第四端口的分束器，分束器响应于选择性地施加到第一，第二和第三端口的光，以使第一偏振状态的光从第一端口传递到第二端口，用于将第二偏振状态的光从第一端口传递到第三端口，用于使第二偏振状态的光从第二端口传递到第四端口，并且用于使第一偏振状态的光从第三端口传递到第四端口港口。光源装置向第一端口提供光。传感器头还包括响应于在第二和第三端口处由分束器输出的偏振光的双向偏振光学传感器，以及施加到偏振传感器的电磁场，用于在所述第三端口产生第一偏振光，并在所述第三端口处产生第二偏振光第二个港口。第一和第二偏振光具有各自的极化状态，其各自随着电磁场和由分束器在第二和第三端口中的另一个输出的光的偏振状态而变化。测量装置响应于来自第四端口的光，以产生指示电磁场强度的输出信号。

3. 发明授权

US5986784A Adaptive polarization diversity detection scheme for coherent communications and interferometric fiber sensors 失效
公开(公告)号：US5986784A
公开(公告)日：1999-11-16
申请号：US354931
申请日：1994-12-12
申请人： Alan D. Kersey , Michael J. Marrone , Anthony Dandridge
发明人： Alan D. Kersey , Michael J. Marrone , Anthony Dandridge
IPC分类号： H04B10/148 , G02B5/30
CPC分类号： H04B10/61 , H04B10/614 , H04B10/6151 , H04B10/64
摘要： A method and apparatus for overcoming polarization induced signal fading in both heterodyne communication and interferometric sensing. An adjustable birefringent element in series with a linear-polarization beam splitter forms an elliptical-polarization beam splitter. The birefringent element controllably evolves the states of polarization of two input signals thereby controlling the power contribution of each signal onto the orthogonal axes used by the linear beam splitter. When the states of polarization are evolved such that there are equal signal to reference power ratios on the beam splitter axes, subsequent detectors generate a constant, optimum amplitude signal without the need for weighting or decision circuits.

4. 发明授权

US5104222A System and method for minimizing input polarization-induced phase noise in an interferometric fiber-optic sensor depolarized input light 失效
标题翻译：用于在干涉光纤传感器去极化输入光中最小化输入偏振引起的相位噪声的系统和方法
公开(公告)号：US5104222A
公开(公告)日：1992-04-14
申请号：US584221
申请日：1990-09-18
申请人： Alan D. Kersey , Michael J. Marrone , Anthony Dandridge
发明人： Alan D. Kersey , Michael J. Marrone , Anthony Dandridge
IPC分类号： G01D5/353
CPC分类号： G01D5/35303
摘要： A system and method for minimizing polarization-induced phase noise in an interferometric fiber sensor is disclosed. The system includes an optical source of light; a single mode input fiber; means coupled between the optical source and the input fiber for scrambling the polarization state of the light from the optical source at a first frequency to effectively produce and pass depolarized light to the input fiber; an interferometric fiber sensor responsive to light from the input fiber for producing at its output an interference pattern proportional to a phase shift produced by a field being sensed by the interferometric fiber sensor; detection means responsive to the interference pattern for developing a photocurrent signal averaged over a period of time longer than the period of the first frequency; and demodulation means responsive to the photocurrent signal for producing an electrical output signal substantially proportional to the phase shift produced by the field being sensed by the interferometric sensor.
摘要翻译：公开了一种用于使干涉光纤传感器中的偏振相位噪声最小化的系统和方法。该系统包括光源光源; 单模输入光纤; 耦合在所述光源和所述输入光纤之间的装置，用于以第一频率扰乱来自所述光源的光的偏振状态，以有效地产生并将去偏振光传递到所述输入光纤; 响应于来自输入光纤的光的干涉光纤传感器，用于在其输出处产生与由干涉光纤传感器感测的场产生的相移成比例的干涉图案; 响应于所述干涉图案的检测装置，用于显影在比所述第一频率的周期长的时间段内平均的光电流信号; 以及响应于光电流信号的解调装置，用于产生基本上与由干涉测量传感器感测的场产生的相移成比例的电输出信号。

5. 发明授权

US5440414A Adaptive polarization diversity detection scheme for coherent communications and interferometric fiber sensors 失效
标题翻译：用于相干通信和干涉光纤传感器的自适应极化分集检测方案
公开(公告)号：US5440414A
公开(公告)日：1995-08-08
申请号：US473807
申请日：1990-02-02
申请人： Alan D. Kersey , Michael J. Marrone
发明人： Alan D. Kersey , Michael J. Marrone
IPC分类号： H04B10/148 , G02B5/30
CPC分类号： H04B10/61 , H04B10/614 , H04B10/6151 , H04B10/64
摘要： A method and apparatus for overcoming polarization induced signal fading in both heterodyne communication and interferometric sensing. An adjustable birefringent element in series with a linear-polarization beam splitter forms an elliptical-polarization beam splitter. The birefringent element controllably evolves the states of polarization of two input signals thereby controlling the power contribution of each signal onto the orthogonal axes used by the linear beam splitter. When the states of polarization are evolved such that there are equal signal to reference power ratios on the beam splitter axes, subsequent detectors generate a constant, optimum amplitude signal without the need for weighting or decision circuits.
摘要翻译：一种用于克服外差通信和干涉测量传感中的极化感应信号衰落的方法和装置。与线性偏振分束器串联的可调双折射元件形成椭圆偏振分束器。双折射元件可控地演化两个输入信号的极化状态，从而控制每个信号对由线性分束器使用的正交轴的功率贡献。当极化状态演变为使得在分束器轴上具有相等的信号与参考功率比时，随后的检测器产生恒定的最佳振幅信号，而不需要加权或判决电路。

6. 发明授权

US4932783A Apparatus and method for minimizing polarization-induced signal fading in an interferometric fiber-optic sensor using input-polarization modulation 失效
标题翻译：使用输入偏振调制在干涉光纤传感器中最小化偏振感应信号衰落的装置和方法
公开(公告)号：US4932783A
公开(公告)日：1990-06-12
申请号：US383390
申请日：1989-07-21
申请人： Alan D. Kersey , Michael J. Marrone
发明人： Alan D. Kersey , Michael J. Marrone
IPC分类号： G01D5/353
CPC分类号： G01D5/35303
摘要： An apparatus for minimizing polarization-induced signal fading in an interferometric fiber-optic sensor is disclosed. The apparatus includes an optical source for providing an input light beam, a polarization modulator for modulating the state of polarization of the input light beam into at least three states represented by mutually perpendicular polarization vectors on a Poincare Sphere. The apparatus further includes means for conveying the input light beam with the at least three mutually perpendicular modulated states of polarization to the fiber-optic sensor, the interferometric fiber-optic sensor being responsive to the input light beam with modulated polarization states for developing an interference pattern output, wherein the interference pattern output has at least three visibilities corresponding to the input states of polarization. A photodetector is responsive to the interference pattern output for developing an electrical signal having at least three amplitudes corresponding to the at least three states of polarization. An output circuit is responsive to the electrical photodetector signal for time-sampling the photodetector signal having three amplitudes corresponding to the at least three mutually perpendicular input states of polarization and selecting the one having maximum visibility. A method for minimizing polarization-induced signal fading is also disclosed.
摘要翻译：公开了一种用于最小化干涉光纤传感器中的偏振感应信号衰落的装置。该装置包括用于提供输入光束的光源，用于将输入光束的偏振状态调制为在庞加莱球体上由相互垂直的极化矢量表示的至少三个状态的偏振调制器。该装置还包括用于将具有至少三个相互垂直的调制偏振状态的输入光束传送到光纤传感器的装置，该干涉光纤传感器响应具有调制偏振状态的输入光束以产生干扰模式输出，其中干涉图案输出具有对应于输入偏振状态的至少三个视觉度。光电检测器响应于干涉图案输出，用于显影具有对应于至少三个极化状态的至少三个幅度的电信号。输出电路响应于电光检测器信号，对具有对应于至少三个相互垂直的输入极化状态的三个幅度的光电检测器信号进行时间采样，并选择具有最大可视性的一个。还公开了一种使极化诱导的信号衰落最小化的方法。

7. 依法登记的发明

USH1268H Method and apparatus for controlling internal rotation of principal axes in fabrication of birefringement fibers 失效
标题翻译：用于控制双折射纤维制造中主轴内旋转的方法和装置
公开(公告)号：USH1268H
公开(公告)日：1993-12-07
申请号：US906093
申请日：1992-06-29
申请人： Charles G. Askins , Michael J. Marrone
发明人： Charles G. Askins , Michael J. Marrone
IPC分类号： G01M11/00 , G01N21/23 , G01N21/00 , C03B37/075
CPC分类号： G01M11/37 , G01N21/23
摘要： A technique and apparatus for detecting the internal rotation of the principal axes in the fabrication of birefringent fibers is based upon a new method for producing and interpreting the interference fringe pattern backscattered power from a birefringent fiber side-illuminated with a laser light source to determine the internal orientation of the strain-inducing axes. An apparatus employing this technique for controlling internal rotation of the principal axes provides for adjustment of the orientation of at least one of the traction surfaces pulling the fiber during drawing fabrication to maintain parallel alignment of the planes of rotation of the surfaces to reduce the fiber rotation-inducing motion which leads to internal rotation of the fiber's principal axes.

8. 发明授权

US4413184A Optical fiber radiation detector and real-time dosimeter 失效
标题翻译：光纤辐射探测器和实时剂量计
公开(公告)号：US4413184A
公开(公告)日：1983-11-01
申请号：US262658
申请日：1981-05-11
申请人： Michael J. Marrone
发明人： Michael J. Marrone
IPC分类号： G01T1/02 , G01T1/20 , G02B5/14 , H05B33/00
CPC分类号： G01T1/2006 , G01T1/02
摘要： An optical fiber dosimeter for monitoring by luminescence the presence of ionizing radiation and measuring a cumulative dose from around reactors, accelerators and waste storage areas. A length of silica core optical fiber in the presence of ionizing radiation has been found to luminesce in two distinct emission bands, one with a peak around 450 nm (blue) and the other with a peak around 650 nm (red). The intensity of the red luminescence is proportional to the intensity of ionizing radiation on the fiber whereas the intensity of blue luminescence is proportional to both the intensity of ionizing radiation on the fiber and the accumulated ionizing radiation history or dosage on the fiber. A device constructed according to the invention may be employed to surround an area of a human body tissue or organ undergoing radiation treatment as an aid in directing the radiation.
摘要翻译：用于通过发光监测电离辐射的存在并测量来自反应器，加速器和废物存储区域周围的累积剂量的光纤剂量计。已经发现在存在电离辐射的情况下，二氧化硅芯光纤的长度在两个不同的发射带内发光，一个具有约450nm（蓝色）的峰值，另一个具有大约650nm（红色）的峰值。红色发光的强度与光纤上的电离辐射强度成比例，而蓝色发光强度与纤维上的电离辐射强度和纤维上积累的电离辐射历史或剂量成正比。根据本发明构造的装置可用于围绕引导辐射的辅助的经历放射治疗的人体组织或器官的区域。

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