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公开(公告)号：US06243168B1
公开(公告)日：2001-06-05
申请号：US09283484
申请日：1999-04-01
IPC分类号： G01B902
CPC分类号： G01B11/04
摘要： A dynamic optical micrometer for measuring the position of a moving object is invented. The optical micrometer includes a laser for generating an optical signal, an RF signal generator, an acousto-optic modulator that is responsive to the optical signal and the RF signal and is operative to provide a first light beam and a second light beam that is up shifted in frequency by the RF frequency, an optical interferometer that reflects the first beam off the object and interferometrically combines the reflected light beam and the second light beam into a heterodyned signal, means responsive to the heterodyned signal and operative to produce an electrical signal at the optical beat frequency corresponding to the RF and means responsive to the RF signal and the electrical signal and operative to provide a linear output signal that corresponds to the position of the object. A method for accomplishing the same is also invented.
摘要翻译： 发明了用于测量移动物体的位置的动态光学千分尺。 光学千分尺包括用于产生光学信号的激光器，RF信号发生器，响应光信号和RF信号的声光调制器，并且可操作地提供第一光束和第二光束 在频率上以RF频率移位的光学干涉仪，其将第一光束反射离开物体并将反射光束和第二光束干涉地组合成外差信号，响应于外差信号并且可操作地产生电信号 对应于RF的光拍频率和响应于RF信号和电信号的装置并且可操作以提供对应于对象的位置的线性输出信号。 也发明了一种完成该方法的方法。
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2.发明授权Optical communication system with a single polarized, phase modulated transmitted beam 有权具有单极化，相位调制的发射光束的光通信系统公开(公告)号：US06441938B1
公开(公告)日：2002-08-27
申请号：US09283053
申请日：1999-04-01
IPC分类号： H04B1000
CPC分类号： H04B10/505 , H04B10/25751 , H04B10/614 , H04B10/66
摘要： An optical communication system, using a radio frequency (RF) signal for communicating an analog communication signal, includes an optical transmitter and an optical receiver. The optical transmitter generates a reference light beam, generates a phase modulated communication light beam by phase modulating the reference light beam with the analog communication signal, polarizes a portion of the reference light beam and combines the polarized reference light beam and the phase modulated communication light beam. The optical receiver separates the reference light beam and the communication light beam, develops a shifted light beam that is shifted in frequency by the RF frequency, interferometrically combines the communication light beam with the shifted light beam to provide a heterodyne signal including information regarding the state of phase of the communication light beam, uses the heterodyne signal to produce an electrical signal at an optical beat frequency corresponding to the RF and with a phase corresponding to the state of phase of the communication light beam, and derives from the RF signal and the heterodyne signal an output signal that has a linear correspondence to the state of optical phase of the communication light beam and the analog communication signal.
摘要翻译： 使用射频（RF）信号传送模拟通信信号的光通信系统包括光发射机和光接收机。 光发射机产生参考光束，通过用模拟通信信号相位调制参考光束产生相位调制通信光束，使参考光束的一部分偏振，并将偏振参考光束和相位调制通信光 光束。 光接收器分离参考光束和通信光束，产生频率偏移RF频率的移位光束，将通信光束与移动光束进行干涉组合，以提供包含关于状态的信息的外差信号 通过使用该外差信号，以对应于RF的光拍频率和与通信光束的相位状态对应的相位产生电信号，并从RF信号和 外差信号是与通信光束的光相位状态和模拟通信信号呈线性对应的输出信号。
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公开(公告)号：US06545785B1
公开(公告)日：2003-04-08
申请号：US09285215
申请日：1999-04-01
IPC分类号： H04B1000
CPC分类号： H04B10/50 , H04B10/1121 , H04B10/25751 , H04B10/60
摘要： An optical communication system uses a radio frequency (RF) signal for communicating an analog communication signal. It comprises an optical transmitter and receiver. The transmitter generates a reference light beam, generates a shifted light beam that is shifted in frequency by the RF frequency, and responds to the analog communication signal and produces a communication light beam having a phase modulation corresponding to the analog communication signal. The optical receiver comprises first means to interferometrically combine the reference light beam with the shifted light beam to provide a first heterodyne signal, second means responsive to the first heterodyne signal to produce a first electrical signal at the optical beat frequency corresponding to the RF, third means to interferometrically combine the communication light beam with the shifted light beam to provide a second heterodyne signal including information regarding the state of phase of the communication light beam, fourth means responsive to said second heterodyne signal to produce a second electrical signal at the optical beat frequency corresponding to the RF and with a phase corresponding to the state of phase of the communication light beam, and fifth means responsive to said first and said second electrical signals to provide an output signal that has a linear correspondence to the state of optical phase of said communication light beam and the analog communication signal. Also disclosed are the transmitter and the receiver.
摘要翻译： 光通信系统使用射频（RF）信号来传送模拟通信信号。 它包括光发射机和接收机。 发射机产生参考光束，产生频率偏移RF频率的移位光束，并响应于模拟通信信号，并产生具有对应于模拟通信信号的相位调制的通信光束。 光接收机包括用于将参考光束与移动的光束干涉地组合以提供第一外差信号的第一装置，响应于第一外差信号以产生对应于RF的光拍频率的第一电信号的第二装置，第三 用于将通信光束与偏移的光束干涉地组合以提供包括关于通信光束的相位状态的信息的第二外差信号，第四装置响应于所述第二外差信号在光学拍子处产生第二电信号 频率对应于RF并且具有对应于通信光束的相位状态的相位;以及第五装置，响应于所述第一和所述第二电信号，以提供与光学相位的状态线性对应的输出信号 所述通信光束和模拟通信信号 gnal。 还公开了发射机和接收机。
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4.发明授权Linear analog optical communication system with two transmitted beams and phase modulation 有权具有两个发射光束和相位调制的线性模拟光通信系统公开(公告)号：US06490068B1
公开(公告)日：2002-12-03
申请号：US09285207
申请日：1999-04-01
IPC分类号： H04B1000
CPC分类号： H04B10/25751
摘要： An optical communication system uses a radio frequency (RF) signal for communicating an analog communication signal. It comprises an optical transmitter and receiver. The optical transmitter comprises means for generating a first reference light beam, and means responsive to the analog communication signal to produce a communication light beam having phase modulation corresponding to the analog communication signal. The optical receiver comprises first means responsive to the reference light beam and the RF signal to develop a shifted light beam that is shifted in frequency by the RF frequency, second means to interferometrically combine the communication light beam with the shifted light beam to provide a heterodyne signal including information regarding the state of phase of the communication light beam, third means responsive to said heterodyne signal to produce an electrical signal at the optical beat frequency corresponding to the RF and with a phase corresponding to the state of phase of the communication light beam, and fourth means responsive to the RF signal and the electrical signals to provide an output signal that has a linear correspondence to the state of optical phase of the communication light beam and the analog communication signal. The optical transmitter and optical receiver are also invented.
摘要翻译： 光通信系统使用射频（RF）信号来传送模拟通信信号。 它包括光发射机和接收机。 光发射机包括用于产生第一参考光束的装置，以及响应于模拟通信信号产生具有与模拟通信信号对应的相位调制的通信光束的装置。 光接收器包括响应于参考光束和RF信号的第一装置，以产生频率偏移RF频率的移动光束，第二装置将通信光束与移动的光束干涉地组合以提供外差 信号，包括关于通信光束的相位状态的信息;第三装置，响应于所述外差信号，以对应于RF的光拍频率产生电信号，并具有对应于通信光束的相位状态的相位 以及响应于所述RF信号和所述电信号的第四装置，以提供与所述通信光束和所述模拟通信信号的光相位的状态具有线性对应关系的输出信号。 还发明了光发射机和光接收机。
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5.发明授权High average power fiber laser system with high-speed, parallel wavefront sensor 有权高平均功率光纤激光系统具有高速，平行波前传感器公开(公告)号：US06366356B1
公开(公告)日：2002-04-02
申请号：US09282579
申请日：1999-04-01
IPC分类号： G01B902
CPC分类号： H01S3/094003 , H01S3/067 , H01S3/2383
摘要： A high average power fiber-laser system comprises a master oscillator for generating a primary laser signal; a beam splitter array for splitting the primary laser signal into N secondary laser signals; an optical frequency shifter for shifting the frequency of the primary laser signal; a phase modulator array for providing phase compensation of the N secondary laser signals; N single-mode dual clad fiber amplifiers for amplifying the N secondary laser signals and generating an output beam; a beam sampler for sampling the wavefront of the output beam, defining an array of sampled signals; means responsive to the array of sampled signals for interferometrically combining the array of said sampled signals and the shifted primary laser signal into an array of heterodyne optical signals, each having a phase that corresponds to the state of phase of the array of sampled signals; and means responsive to the array of heterodyne optical signals for providing a plurality of feedback signals to the phase modulator array that are linearly proportioned to the state of phase over at least one wave to provide phase compensation of the secondary laser signals. This includes digital dividers for dividing electrical signals by a selected integer and an exclusive OR gate for providing a pulse train having a duty cycle that reflects the phase to be compensated.
摘要翻译： 高平均功率光纤激光器系统包括用于产生主激光信号的主振荡器; 分束器阵列，用于将主激光信号分解成N个次级激光信号; 用于移动主激光信号的频率的光学移频器; 用于提供N个次级激光信号的相位补偿的相位调制器阵列; N单模双包层光纤放大器，用于放大N次激光信号并产生输出光束; 用于对输出光束的波前采样的光束采样器，定义采样信号的阵列; 响应于采样信号阵列的装置，用于将所述采样信号的阵列和移位的初级激光信号干涉地组合成外差光信号阵列，每个具有对应于采样信号阵列的相位状态的相位; 以及响应于所述外差光信号阵列的装置，用于向所述相位调制器阵列提供与所述至少一个波的相位状态成线性比例的多个反馈信号，以提供次级激光信号的相位补偿。 这包括用于将电信号除以选定整数的数字分频器和用于提供具有反映待补偿相位的占空比的脉冲串的异或门。
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公开(公告)号：US06229616B1
公开(公告)日：2001-05-08
申请号：US09283604
申请日：1999-04-01
IPC分类号： G01B902
CPC分类号： G01J9/04
摘要： An optical heterodyne wavefront sensor uses a radio frequency (RF) signal for measuring an optical wavefront having a state of phase that differs throughout its aperture. It comprises a lens, optical fiber and optical frequency shifter arrangement to develop a reference optical wavefront having substantially the same phase throughout and that is shifted in frequency by an amount corresponding to the RF. A beam combiner interferometrically combines the optical wavefront and the shifted reference optical wavefront into a heterodyne optical signal at the RF frequency, each subaperture of which has a phase that corresponds to the state of phase of a like subaperture of the optical wavefront. An array of lenses focuses the optical heterodyne signal into an array of photodetectors, each responsive to a subaperture and that produces an electrical signal at the optical beat frequency corresponding to the RF and having a phase corresponding to the state of phase of the corresponding subaperture of the optical wavefront. A plurality of circuit chains, each including a digital divider, responds to the RF signal and a corresponding one of the array of electrical signals and with an exclusive OR circuit and an integrating circuit develops a like plurality of output signals that comprise voltages that linearly correspond to the state of optical phase of a subaperture of the optical wavefront. The composite output signals represent the optical state of phase of the incoming optical wavefront.
摘要翻译： 光学外差波前传感器使用射频（RF）信号来测量具有在其孔径上不同的相位状态的光波阵面。 它包括透镜，光纤和光学移频器装置，用于开发具有基本上相同相位并且频率偏移与RF相对应的量的参考光学波前。 光束组合器将光学波前和偏移的参考光波前干涉地组合成RF频率的外差光信号，每个子孔径具有对应于光波阵面的类似子孔径的相位状态的相位。 透镜阵列将光学外差信号聚焦到光电检测器的阵列中，每个光电检测器响应于子孔径并且产生与RF相对应的光学拍频的电信号，并且具有相应于相应子孔径的相位状态的相位 光波前。 每个包括数字分频器的多个电路链对RF信号和电信号阵列中的相应一个和异或电路进行响应，积分电路产生相似的多个输出信号，其包括线性对应的电压 到光波前的子孔径的光学相位状态。 复合输出信号表示入射光波阵面的相位的光学状态。
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公开(公告)号：US6147755A
公开(公告)日：2000-11-14
申请号：US282946
申请日：1999-04-01
CPC分类号： G01J9/04
摘要： A dynamic instrument measures the state of optical phase of light and provides an output signal having a magnitude that varies linearly relative to the state of optical phase of a first light beam. It comprises means for generating an optical signal, means for generating a radio frequency (RF) signal that is responsive to the optical signal and the RF signal and provides a first light beam and a second light beam, at least one of which is shifted in frequency by an amount corresponding to the RF, an optical interferometer that allows the state of optical phase of the first beam to be changed and that interferometrically combines and heterodynes the changed first light beam and the second light beam, means responsive to the heterodyne signal and operative to produce an electrical signal at the optical beat frequency corresponding to the RF, and means responsive to the RF signal and the electrical signal for providing the linear output signal.
摘要翻译： 动态仪器测量光的相位状态，并提供具有相对于第一光束的光学相位状态线性变化的输出信号。 它包括用于产生光信号的装置，用于产生响应于光信号和RF信号并提供第一光束和第二光束的射频（RF）信号的装置，该第一光束和第二光束中的至少一个被移入 频率相当于RF的量;允许第一光束的光学相位状态被改变并且干涉地组合和变换改变的第一光束和第二光束的光学干涉仪，响应于外差信号和 可操作地以对应于RF的光拍频率产生电信号，以及响应于RF信号和电信号以提供线性输出信号的装置。
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公开(公告)号：US4930855A
公开(公告)日：1990-06-05
申请号：US202356
申请日：1988-06-06
申请人： George L. Clark , Lee O. Heflinger , Chandrasekhar Roychoudhuri , Robert E. Brooks , Madan M. Sharma
发明人： George L. Clark , Lee O. Heflinger , Chandrasekhar Roychoudhuri , Robert E. Brooks , Madan M. Sharma
IPC分类号： G02B6/34
CPC分类号： G02B6/4215 , G02B6/2931 , G02B6/29313 , G02B6/2938
摘要： Apparatus for multiplexing or demultiplexing multiple laser beams of different wavelength. In multiplexing, the outputs from multiple diode lasers are combined in such a manner as to produce a practically parallel set of beams for direction onto a diffraction grating. The latter component deflects each beam from its normal path by an angular amount determined from the wavelength of the incident light. The angles of incidence of the multiple beams are chosen to provide angles of diffraction that are practically identical for all wavelengths under consideration. In demultiplexing, similar apparatus includes a diffraction grating to provide angular dispersion of the multiple wavelengths, at least one lens to magnify the angular differences, and a set of detectors positioned in the paths of the dispersed beams of different wavelengths.
摘要翻译： 用于复用或解复用不同波长的多个激光束的装置。 在多路复用中，来自多个二极管激光器的输出以这样的方式组合，以便产生用于方向到衍射光栅上的几乎平行的光束组。 后一个组件使每个光束从其正常路径偏转由入射光的波长确定的角度量。 选择多个光束的入射角以提供对于所考虑的所有波长实际上相同的衍射角。 在解复用中，类似的装置包括衍射光栅以提供多个波长的角度色散，至少一个透镜以放大角度差，以及一组位于不同波长的分散光束的路径中的检测器。
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公开(公告)号：US5886800A
公开(公告)日：1999-03-23
申请号：US47863
申请日：1993-04-15
申请人： Robert Aprahamian , George L. Clark , Lee O. Heflinger , Jesper Munch , Ralph Frederick Wuerker
发明人： Robert Aprahamian , George L. Clark , Lee O. Heflinger , Jesper Munch , Ralph Frederick Wuerker
CPC分类号： G02B26/06
摘要： A technique for correcting wavefront aberrations introduced by large primary optical elements in portions of the electromagnetic spectrum. The aberrations of the primary element are first transferred to a beacon beam and this aberrated beam is interfered with a reference beam in a holographic medium. These beams are then turned off and a beam from a distant object, containing the same aberrations, is allowed to diffract from the hologram. The diffracted beam from the hologram contains the image of the distant object with aberrations removed. Use of this technique permits the construction of large optical elements inexpensively, since surface tolerances of the elements can be substantially relaxed.
摘要翻译： 用于校正由电磁光谱的部分中的大的主要光学元件引入的波前像差的技术。 首要元件的像差首先转移到信标光束，并且该像差光束受到全息介质中的参考光束的干扰。 然后关闭这些光束，并且允许来自包含相同像差的远距离物体的光束从全息图衍射。 来自全息图的衍射光束包含去除了像差的远距离物体的图像。 使用这种技术允许廉价地构造大的光学元件，因为元件的表面公差可以基本上被放宽。
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10.发明授权
公开(公告)号：US5451874A
公开(公告)日：1995-09-19
申请号：US102443
申请日：1993-08-05
申请人： Lee O. Heflinger
发明人： Lee O. Heflinger
CPC分类号： G01R33/54 , G01R33/3635
摘要： A heterodyne pumping method and system are provided for producing gyromagnetic resonance in a sample. The system includes a unidirectional static magnetic field for polarizing the sample. A first oscillating magnetic field having a first frequency is applied to said sample in the direction of said static magnetic field. A second oscillating magnetic field having a second frequency is applied transverse to said static magnetic field. A magnetic resonance response exhibited by said sample is detected and filtered by a bandpass filter so as to eliminate any drive signal interference. First and second oscillating magnetic fields are selected having first and second frequencies that provide wideband frequency separation from the resonance frequency of the sample.
摘要翻译： 提供外差泵送方法和系统用于在样品中产生回旋磁共振。 该系统包括用于使样品偏振的单向静磁场。 具有第一频率的第一振荡磁场在所述静磁场的方向上施加到所述样品。 具有第二频率的第二振荡磁场横向于所述静磁场施加。 通过带通滤波器检测并滤波由所述样品表现的磁共振响应，以消除任何驱动信号干扰。 选择第一和第二振荡磁场具有提供与样品的共振频率的宽带频率分离的第一和第二频率。
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