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1. 发明授权

US06490071B2 Method and apparatus for optimizing SBS performance in an optical communication system using at least two phase modulation tones 有权
标题翻译：用于使用至少两个相位调制音调优化光通信系统中的SBS性能的方法和装置
公开(公告)号：US06490071B2
公开(公告)日：2002-12-03
申请号：US09923029
申请日：2001-08-06
申请人： Ronald T. Logan, Jr. , Ruo Ding Li
发明人： Ronald T. Logan, Jr. , Ruo Ding Li
IPC分类号： H04B1000
CPC分类号： H04B10/2537
摘要： A method of optimizing SBS suppression is disclosed for use in an optical communication system including a light guide for transmitting light and means for producing phase modulation of the light using at least first and second tones. In the method, an operational region of SBS suppression is established as a function of the phase modulation of the light such that the operational region identifies combinations of first and second phase modulation levels at which optimum SBS suppression is achieved for the first and second tones. Thereafter, based on the operational region, the first and second phase modulation levels are adjusted such that the system operates with optimum SBS suppression. In one aspect, a contour map and associated method are introduced. The contour map is especially suited for use in optimizing SBS suppression in an optical communication system in which light is phase modulated using at least first and second tones for transmission of the phase modulated light via media which exhibits an SBS threshold. In another aspect, one of the sub-regions identified by the contour map may be selected as the operating point of the system based on certain characteristics of the contour map at and around the location of the selected operating point. In this manner, for example, the stability of the optical communication system may be improved in the event that the selected operating point is subject to drift.
摘要翻译：公开了一种优化SBS抑制的方法，用于包括用于发射光的光导的光通信系统和用于使用至少第一和第二音调产生光的相位调制的装置。在该方法中，SBS抑制的操作区域被建立为光的相位调制的函数，使得操作区域识别第一和第二相位调制电平的组合，在第一和第二相位调制电平处获得针对第一和第二音调的最佳SBS抑制。此后，基于操作区域，调整第一和第二相位调制电平，使得系统以最佳SBS抑制运行。在一个方面，引入了轮廓图和相关联的方法。轮廓图特别适合用于优化光通信系统中的SBS抑制，其中使用至少第一和第二音调对光进行相位调制，以便通过显示SBS阈值的介质传输相位调制光。在另一方面，基于轮廓图识别的子区域中的一个可以基于所选择的操作点的位置处和周围的轮廓图的某些特征被选择为系统的操作点。以这种方式，例如，在所选择的操作点经受漂移的情况下，可以改善光通信系统的稳定性。

2. 发明授权

US06282003B1 Method and apparatus for optimizing SBS performance in an optical communication system using at least two phase modulation tones 失效
标题翻译：用于使用至少两个相位调制音调优化光通信系统中的SBS性能的方法和装置
公开(公告)号：US06282003B1
公开(公告)日：2001-08-28
申请号：US09017182
申请日：1998-02-02
申请人： Ronald T. Logan, Jr. , Ruo Ding Li
发明人： Ronald T. Logan, Jr. , Ruo Ding Li
IPC分类号： H04B1000
CPC分类号： H04B10/2537
摘要： A method of optimizing SBS suppression is disclosed for use in an optical communication system including a light guide for transmitting light and means for producing phase modulation of the light using at least first and second tones. In the method, an operational region of SBS suppression is established as a function of the phase modulation of the light such that the operational region identifies combinations of first and second phase modulation levels at which optimum SBS suppression is achieved for the first and second tones. Thereafter, based on the operational region, the first and second phase modulation levels are adjusted such that the system operates with optimum SBS suppression. In one aspect, a contour map and associated method are introduced. The contour map is especially suited for use in optimizing SBS suppression in an optical communication system in which light is phase modulated using at least first and second tones for transmission of the phase modulated light via media which exhibits an SBS threshold. In another aspect, one of the sub-regions identified by the contour map may be selected as the operating point of the system based on certain characteristics of the contour map at and around the location of the selected operating point. In this manner, for example, the stability of the optical communication system may be improved in the event that the selected operating point is subject to drift.
摘要翻译：公开了一种优化SBS抑制的方法，用于包括用于发射光的光导的光通信系统和用于使用至少第一和第二音调产生光的相位调制的装置。在该方法中，SBS抑制的操作区域被建立为光的相位调制的函数，使得操作区域识别第一和第二相位调制电平的组合，在第一和第二相位调制电平处获得针对第一和第二音调的最佳SBS抑制。此后，基于操作区域，调整第一和第二相位调制电平，使得系统以最佳SBS抑制运行。在一个方面，引入了轮廓图和相关联的方法。轮廓图特别适合用于优化光通信系统中的SBS抑制，其中使用至少第一和第二音调对光进行相位调制，以便通过显示SBS阈值的介质传输相位调制光。在另一方面，基于轮廓图识别的子区域中的一个可以基于所选择的操作点的位置处和周围的轮廓图的某些特征被选择为系统的操作点。以这种方式，例如，在所选择的操作点经受漂移的情况下，可以改善光通信系统的稳定性。

3. 发明授权

US08798405B2 Method of making a fiber optic gyroscope 有权
标题翻译：制造光纤陀螺仪的方法
公开(公告)号：US08798405B2
公开(公告)日：2014-08-05
申请号：US13198488
申请日：2011-08-04
申请人： Ronald T. Logan, Jr. , Ka Kha Wong
发明人： Ronald T. Logan, Jr. , Ka Kha Wong
IPC分类号： G01C19/72 , G01C19/64 , G02B6/32 , G02B6/30
CPC分类号： G01C19/64 , G01C19/72 , G01C19/721 , G01C19/722 , G02B6/30 , G02B6/327 , Y10T29/49826 , Y10T156/10 , Y10T156/1062
摘要： Methods of attaching an optical line to a phase modulator in a fiber optic gyroscope. The methods include positioning at least one end of the optical line relative to a side of the phase modulator. The end of the optical line may have a first non-perpendicular angle and the side of the phase modulator may have a second non-perpendicular angle. The end of the optical line may be attached to the side of the phase modulator with the end of the optical line being non-parallel to the side of the phase modulator. The optical line may be an optical coil or a light path.
摘要翻译：将光线连接到光纤陀螺仪中的相位调制器的方法。所述方法包括相对于相位调制器的侧面定位光学线路的至少一端。光线路的端部可以具有第一非垂直角度，并且相位调制器的侧面可以具有第二非垂直角度。光线路的端部可以附接到相位调制器的侧面，其中光线路的端部不平行于相位调制器的侧面。光线可以是光线圈或光路。

4. 发明授权

US08773665B1 Compact fiber optic gyroscope 有权
标题翻译：紧凑型光纤陀螺仪
公开(公告)号：US08773665B1
公开(公告)日：2014-07-08
申请号：US13078428
申请日：2011-04-01
申请人： Ronald T. Logan, Jr. , Ka Kha Wong
发明人： Ronald T. Logan, Jr. , Ka Kha Wong
IPC分类号： G01C19/72
CPC分类号： G01C19/72
摘要： A compact fiber optic gyroscope including a first housing; a transceiver module disposed in the first housing, the transceiver module including a second housing; a non-coherent light source disposed in the second housing for producing a first beam of light; a single lens for focusing the first beam of light; an optical circulator disposed in the second housing and in the path of the first beam of light to produce polarized second and third beams respectively, with polarization orthogonal to each other; and first and second photodiodes disposed in the second housing and coupled to the optical circulator, wherein the first photodiode is a transmit monitor photodiode coupled to the second beam, and the second photodiode is a receiver photodiode. The first housing further includes a planar optical fiber loop having a first end and a second end; a phase modulator coupled to the third beam emitted from the transceiver module to produce fourth and fifth beams coupled to the first and the second end respectively of the optical fiber loop respectively, and for receiving the return sixth and seventh beams from the second and the first ends respectively of the optical fiber loop.
摘要翻译：包括第一壳体的紧凑型光纤陀螺仪; 收发器模块，设置在所述第一壳体中，所述收发器模块包括第二壳体; 设置在所述第二壳体中用于产生第一光束的非相干光源; 用于聚焦第一光束的单个透镜; 设置在所述第二壳体中并且在所述第一光束的路径中的光学循环器，以分别以彼此正交的极化产生偏振的第二和第三光束; 以及第一和第二光电二极管，其设置在第二壳体中并且耦合到光循环器，其中第一光电二极管是耦合到第二光束的透射监测器光电二极管，而第二光电二极管是接收器光电二极管。第一壳体还包括具有第一端和第二端的平面光纤回路; 耦合到从收发器模块发射的第三光束的相位调制器，以产生分别耦合到光纤回路的第一和第二端的第四和第五光束，并且用于从第二和第一光束接收返回的第六和第七光束分别结束光纤环路。

5. 发明授权

US07936453B2 Terahertz frequency domain spectrometer with integrated dual laser module 有权
标题翻译：具有集成双激光模块的太赫兹频域光谱仪
公开(公告)号：US07936453B2
公开(公告)日：2011-05-03
申请号：US12062772
申请日：2008-04-04
申请人： Ronald T. Logan, Jr. , Joseph R. Demers , Bryon L. Kasper
发明人： Ronald T. Logan, Jr. , Joseph R. Demers , Bryon L. Kasper
IPC分类号： G01N21/21
CPC分类号： G01J3/42 , G01J3/10 , G01N21/3581
摘要： An apparatus for analyzing, identifying or imaging a target including an integrated dual laser module coupled to a pair of photoconductive switches to produce CW signals in the range of frequencies from 100 GHz to over 2 THz focused on and transmitted through or reflected from the target; and a detector for acquiring spectral information from signals received from the target and using a multi-spectral homodyne process to generate an electrical signal representative of some characteristics of the target with resolution less than 250 MHz. The photoconductive switches are activated by laser beams from the dual laser module. The lasers in the module are tuned to different frequencies and have two distinct low frequency identification tones respectively that are used in conjunction with a stable optical filter element to permit precise determination of the offset frequency of the lasers.
摘要翻译：一种用于分析，识别或成像目标的装置，所述目标包括耦合到一对光电导开关的集成双激光模块，以产生在从100GHz到超过2THz的频率范围内的CW信号，其聚焦并经由目标传送或反射; 以及检测器，用于从从目标接收的信号中获取光谱信息，并使用多光谱零差处理来产生表示具有小于250MHz的分辨率的目标的某些特性的电信号。光导开关由来自双激光模块的激光束激活。模块中的激光器被调谐到不同的频率，并且具有分别与稳定的光学滤波器元件结合使用的两个不同的低频识别音，以允许精确地确定激光器的偏移频率。

6. 发明授权

US07075028B2 Sub-micron adjustable mount for supporting a component and method 有权
公开(公告)号：US07075028B2
公开(公告)日：2006-07-11
申请号：US10394326
申请日：2003-03-20
申请人： Joseph R. Demers , Nathan G. Woodard , Eric C. Johnson , Chien-Chung Chen , Ronald T. Logan, Jr.
发明人： Joseph R. Demers , Nathan G. Woodard , Eric C. Johnson , Chien-Chung Chen , Ronald T. Logan, Jr.
IPC分类号： B23K11/00
CPC分类号： G02B7/00
摘要： Attaching an attachment surface of an electrically conductive workpiece to an electrically conductive support surface is described. In one aspect, a biasing force is distributed at least partially around a weld region of the workpiece to urge the attachment surface of the workpiece against the support surface in a way which at least resists welding induced movement of the workpiece relative to the support arrangement. An electrode arrangement, having an electrode tip, contacts the workpiece to provide for substantially compliant movement of the electrode tip against the weld region in directions that are parallel to the support surface. In another aspect, a combined manipulation/welding arrangement is supported for controlled movement with a free end configured for engaging the workpiece to bias the workpiece against the support surface to manipulate the workpiece against the surface and to conduct an electrical current, while holding the workpiece, for welding to the support surface.

7. 发明授权

US06370290B1 Integrated wavelength-select transmitter 失效
标题翻译：集成波长选择发射机
公开(公告)号：US06370290B1
公开(公告)日：2002-04-09
申请号：US08934189
申请日：1997-09-19
申请人： Gary A. Ball , Robert W. Ade , Karl Kissa , Paul Dunn , Timothy C. Munks , Ronald T. Logan, Jr. , Eitan Gertel
发明人： Gary A. Ball , Robert W. Ade , Karl Kissa , Paul Dunn , Timothy C. Munks , Ronald T. Logan, Jr. , Eitan Gertel
IPC分类号： G02B612
CPC分类号： G02B6/4201 , G02B6/4215 , G02B6/4239 , G02B6/4244 , G02B6/4266 , G02B6/4271 , G02B6/4285
摘要： An integrated optical transmitter for use in an optical system has an optical head assembly with an optical beam generator for providing an optical beam and a lens assembly collecting the optical beam and generating therefrom a formed optical beam. Interface optics receives the formed optical beam and provides optical coupling so as to minimize insertion loss to the optical beam. Also included is an optical modulator for receiving the optical beam from the interface optics and for providing a modulated optical beam in response to received modulation signals. The optical modulator is coupled to the interface optics to be in a fixed relationship therewith.
摘要翻译：用于光学系统的集成光发射器具有光学头组件，其具有用于提供光束的光束发生器和收集光束并由其产生形成的光束的透镜组件。接口光学器件接收所形成的光束并提供光耦合，以使对光束的插入损耗最小化。还包括用于从接口光学器件接收光束并响应于接收到的调制信号提供调制光束的光调制器。光调制器耦合到界面光学器件以与其成为固定的关系。

8. 发明授权

US5204640A Widely tunable oscillator stabilization using analog fiber optic delay line 失效
标题翻译：使用模拟光纤延迟线广泛调谐振荡器稳定
公开(公告)号：US5204640A
公开(公告)日：1993-04-20
申请号：US832884
申请日：1992-02-10
申请人： Ronald T. Logan, Jr.
发明人： Ronald T. Logan, Jr.
IPC分类号： H03L1/00
CPC分类号： H03L1/00
摘要： A circuit for stabilizing an oscillator having an oscillator output signal includes a long optical fiber delay line which receives an optical version of the oscillator output signal and a phase detector sensing the oscillator output signal and the delayed optical output signal through the long optical fiber. The output of the phase detector is fed back to the oscillator's frequency control input to stabilize the frequency. The phase detector and the delay line are a delay line discriminator, and the length of the optical fiber is selected so as to optimize the discriminator's sensitivity against signal attenuation in the optical fiber, the optical fiber length typically being on the order of 10 kilometers. An adjustable phase shifter which maintains phase quadrature at the phase detector inputs at equilibrium is controlled by a tuning microprocessor responsive to an externally controlled change in the frequency at which the oscillator is to be stabilized, so as to follow changes in the selected oscillator frequency. As a result, an oscillator may be tuned in the circuit of the invention to any frequency in the general range of D.C. to optical frequencies.
摘要翻译：用于稳定具有振荡器输出信号的振荡器的电路包括：长光纤延迟线，其接收振荡器输出信号的光学版本;以及相位检测器，通过长光纤检测振荡器输出信号和延迟的光输出信号。相位检测器的输出反馈到振荡器的频率控制输入以稳定频率。相位检测器和延迟线是延迟线鉴别器，选择光纤的长度，以便优化鉴别器对光纤信号衰减的灵敏度，光纤长度通常在10公里左右。在调节微处理器响应于振荡器稳定的频率的外部受控变化的情况下，可以在平衡时保持相位检测器输入端保持相位正交的可调移相器，以便跟随所选振荡器频率的变化。结果，振荡器可以在本发明的电路中调谐到直流到光频率的一般范围内的任何频率。

9. 发明授权

US09029775B2 Terahertz frequency domain spectrometer with phase modulation of source laser beam 有权
标题翻译：太赫兹频域光谱仪，源激光束相位调制
公开(公告)号：US09029775B2
公开(公告)日：2015-05-12
申请号：US13565021
申请日：2012-08-02
申请人： Joseph R. Demers , Ronald T. Logan, Jr.
发明人： Joseph R. Demers , Ronald T. Logan, Jr.
IPC分类号： G01N21/35 , G01J3/10 , G01J3/42 , G01J3/453 , G01N21/3581 , G01N21/39 , G01N21/3586
CPC分类号： G01J3/10 , G01J3/42 , G01J3/4531 , G01N21/3581 , G01N21/3586 , G01N21/39
摘要： An apparatus for analyzing, identifying or imaging an target including first and second laser beams coupled to a pair of photoconductive switches to produce CW signals in one or more bands in a range of frequencies greater than 100 GHz focused on, and transmitted through or reflected from the target; and a detector for acquiring spectral information from signals received from the target and using a multi-spectral heterodyne process to generate an electrical signal representative of some characteristics of the target. The lasers are tuned to different frequencies and a phase modulator in the path of one laser beam allows the constructive or destructive interference of the signals on the detector as the laser beams are swept in frequency to be adjusted to achieve greater resolution in one or more selected frequency bands.
摘要翻译：一种用于分析，识别或成像目标的装置，包括耦合到一对光电导开关的第一和第二激光束，以在大于100GHz的频率的范围内的一个或多个频带中产生CW信号，该信号聚焦并透过或反射目标; 以及检测器，用于从从目标接收的信号中获取光谱信息，并使用多光谱外差处理产生表示目标的某些特性的电信号。将激光器调谐到不同的频率，并且在一个激光束的路径中的相位调制器允许在检测器上的信号的建构性或相消干涉，因为激光束被扫频以被调整以在一个或多个选定的频带。

10. 发明授权

US08829440B2 Terahertz frequency domain spectrometer with discrete coarse and fine tuning 有权
标题翻译：太赫兹频域光谱仪，具有离散的粗调和微调
公开(公告)号：US08829440B2
公开(公告)日：2014-09-09
申请号：US13831438
申请日：2013-03-14
申请人： Ronald T. Logan, Jr. , Joseph R. Demers
发明人： Ronald T. Logan, Jr. , Joseph R. Demers
IPC分类号： G01N21/35 , A61B5/05
CPC分类号： G01J3/427 , A61B5/0507 , G01J3/10 , G01J3/42 , G01J3/4531 , G01N21/3581 , G01N21/3586 , G01N21/39
摘要： An apparatus for analyzing, identifying or imaging an target including first and second laser beams coupled to a pair of photoconductive switches to produce CW signals in one or more bands in a range of frequencies greater than 100 GHz focused on and transmitted through or reflected from the target; and a detector for acquiring spectral information from signals received from the target and using a multi-spectral heterodyne process to generate an electrical signal representative of some characteristics of the target. The lasers are tuned to different frequencies and a frequency shifter in the path of one laser beam allows the terahertz beam to be finely adjusted in one or more selected frequency bands.
摘要翻译：一种用于分析，识别或成像目标的装置，包括耦合到一对光电导开关的第一和第二激光束，以在大于100GHz的频率的范围内的一个或多个频带中产生CW信号，该信号集中于并经由目标; 以及检测器，用于从从目标接收的信号中获取光谱信息，并使用多光谱外差处理产生表示目标的某些特性的电信号。将激光器调谐到不同的频率，并且在一个激光束的路径中的频移器允许在一个或多个所选频带中微调太赫兹波束。

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