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    • 5. 发明申请
    • System and method for determining the bearing of a source location from a receiver location
    • 用于从接收器位置确定源位置的方位的系统和方法
    • US20070099627A1
    • 2007-05-03
    • US11264264
    • 2005-10-31
    • John KofolWilliam TrutnaGraham Flower
    • John KofolWilliam TrutnaGraham Flower
    • H04Q7/20
    • G01S1/30G01S19/38
    • The system comprises a first beatable signal source, a second beatable signal source, a phase reference signal source and a receiver. The first beatable signal source and the second beatable signal source are located at the source location; the receiver is located at the receiver location. The phase reference signal source is operable to generate a phase reference signal. The first beatable signal source is operable to transmit a first beatable signal. The second beatable signal source is spatially offset from the first beatable signal source in a reference direction, and is operable to transmit a second beatable signal differing in frequency from the first beatable signal by a frequency difference. The first beatable signal and the second beatable signal collectively have a phase relationship with the phase reference signal. The receiver is structured to receive the first beatable signal and the second beatable signal and is operable to determine a direction angle, relative to the reference direction, of the source location from the receiver location. The receiver performs operations that comprise measuring a phase difference between a beat signal and either the phase reference signal or an additional beat signal, and determining the direction angle from the measured phase difference. The beat signal obtained by a process involving summing the first beatable signal and the second beatable signal. The additional beat signal is obtained by a process involving summing the first beatable signal and the phase reference signal. The bearing can be determined from the direction angle.
    • 该系统包括第一可跳动信号源,第二可跳动信号源,相位参考信号源和接收器。 第一可匹配信号源和第二可匹配信号源位于源位置; 接收器位于接收器位置。 相位参考信号源可操作以产生相位参考信号。 第一可匹配信号源可操作以传送第一可捕获信号。 第二可匹配信号源在参考方向上与第一可捕获信号源在空间上偏移,并且可操作以将频率与第一可跳动信号不同的第二可播放信号传输频率差。 第一可跳动信号和第二可跳动信号共同地与相位参考信号相位关系。 接收器被构造成接收第一可捕获信号和第二可捕获信号,并且可操作以从源接收器位置确定源位置相对于参考方向的方向角度。 接收机执行包括测量拍频信号与相位参考信号或附加拍子信号之间的相位差的操作,以及根据测得的相位差确定方向角。 通过涉及将第一可拍信号和第二可拍信号相加的处理获得的拍频信号。 通过涉及对第一可匹配信号和相位参考信号求和的处理获得附加的拍频信号。 轴承可以从方向角度确定。
    • 6. 发明申请
    • Method and apparatus to improve the dynamic range of optical devices using spatial apodization
    • 使用空间变迹改善光学器件的动态范围的方法和装置
    • US20060055926A1
    • 2006-03-16
    • US10939673
    • 2004-09-13
    • Kenneth WildnauerWilliam Trutna
    • Kenneth WildnauerWilliam Trutna
    • G01J3/28
    • G02B27/58
    • Devices and methods for processing multi-wavelength light beams and the single-wavelength components of such light beams are disclosed. In accordance with some embodiments, a spectral filter includes collimating and focusing optical elements, an apodizing filter, a diffraction grating, and a spatial filter. The collimating optical element collimates an input light beam while the apodizing filter spatially filters this beam. In general, the apodizing filter includes a range of transmissivity that varies according to a distance from a predetermined location on the apodizing filter. The diffraction grating diffracts the input beam which is focused by the focusing optical element onto the spatial filter to generate a filtered output beam. Embodiments of the invention may be employed as spectral filters, optical spectrum analyzers, optical mutiplexers, optical de-multiplexers, and the like.
    • 公开了用于处理多波长光束的装置和方法以及这种光束的单波长分量。 根据一些实施例,光谱滤波器包括准直和聚焦光学元件,变迹滤波器,衍射光栅和空间滤波器。 准直光学元件准直输入光束,而变迹滤光器对该光束进行空间滤光。 通常,变迹滤波器包括根据与变迹滤波器上的预定位置的距离而变化的透射率范围。 衍射光栅将由聚焦光学元件聚焦的输入光束衍射到空间滤光片上,以产生滤波后的输出光束。 本发明的实施例可以用作光谱滤波器,光谱分析仪,光学多路复用器,光学解复用器等。
    • 7. 发明申请
    • Frequency-tunable light sources and methods of generating frequency-tunable light
    • 频率可调光源和产生频率可调光的方法
    • US20060050747A1
    • 2006-03-09
    • US10936113
    • 2004-09-08
    • William TrutnaGeraint Owen
    • William TrutnaGeraint Owen
    • H01S3/10
    • H01S5/141H01S3/1068H01S5/142
    • Frequency-tunable light sources and methods of generating frequency-tunable light are described. In one aspect, a frequency-tunable light source includes a resonant optical cavity, an optical gain medium, an optical mode filter, and a mode frequency tuner. The resonant optical cavity supports oscillation of light in at least one longitudinal mode having a respective mode frequency. The optical gain medium is disposed in the resonant optical cavity and is operable to amplify light. The optical mode filter is arranged to intercept light oscillating in the resonant optical cavity and has an optical transmission pass-band with a tunable center frequency. The mode frequency tuner is arranged to intercept light oscillating in the resonant optical cavity and is operable to tunably change the mode frequencies of the at least one longitudinal mode of the resonant optical cavity. In another aspect, a resonant optical cavity is provided. The resonant optical cavity supports oscillation of light in at least one longitudinal mode having a respective mode frequency. Light in at least one longitudinal mode in the resonant optical cavity is amplified. The mode frequencies of the resonant optical cavity are changed. The light is transmission band-pass filtered.
    • 描述了可调频光源和产生频率可调光的方法。 在一个方面,频率可调谐光源包括谐振光学腔,光学增益介质,光学模式滤波器和模式频率调谐器。 谐振光学腔支持具有相应模式频率的至少一个纵向模式的光的振荡。 光学增益介质设置在谐振光学腔中并可操作以放大光。 光学模式滤波器被布置成截取在谐振光学腔中振荡的光,并具有具有可调谐中心频率的光学透射通带。 模式频率调谐器被布置成截取在谐振光学腔中振荡的光并且可操作地可调谐地改变谐振光学腔的至少一个纵向模式的模式频率。 另一方面,提供了一种谐振光学腔。 谐振光学腔支持具有相应模式频率的至少一个纵向模式的光的振荡。 谐振光腔中的至少一个纵向模式的光被放大。 谐振光腔的模式频率发生变化。 光被透射带通滤波。
    • 8. 发明申请
    • Resonator based spectrum analyzer and method
    • 基于谐振器的频谱分析仪和方法
    • US20060244436A1
    • 2006-11-02
    • US11119285
    • 2005-04-29
    • William TrutnaSteven Rosenau
    • William TrutnaSteven Rosenau
    • G01R23/00
    • G01R29/0878G01R23/16
    • A spectrum analyzer includes an array of frequency-selective bulk acoustic wave (BAW) resonators each tuned to a predetermined different resonant frequency. The spectrum analyzer further includes a broadband BAW resonator that generates acoustic energy when connected to a signal source. An acoustic coupling transmits the acoustic energy generated by the broadband BAW resonator to the frequency-selective BAW resonators so that one of the frequency-selective BAW resonators will generate an electrical output signal if the acoustic energy transmitted from the broadband BAW resonator contains spectral components at its predetermined resonant frequency.
    • 频谱分析仪包括频率选择性体声波(BAW)谐振器的阵列,每个谐振器被调谐到预定的不同谐振频率。 频谱分析仪还包括宽带BAW谐振器,当连接到信号源时产生声能。 声耦合将由宽带BAW谐振器产生的声能传输到频率选择性BAW谐振器,使得如果从宽带BAW谐振器传输的声能含有频谱分量,则频率选择性BAW谐振器之一将产生电输出信号 其预定谐振频率。
    • 10. 发明申请
    • Apparatus and method for shifting the frequency of an optical signal by two-stage Raman scattering
    • 通过两级拉曼散射来移位光信号的频率的装置和方法
    • US20050195471A1
    • 2005-09-08
    • US10795034
    • 2004-03-05
    • William TrutnaKenneth Wildnauer
    • William TrutnaKenneth Wildnauer
    • H01S3/08H01S3/30
    • H01S3/302H01S3/08086
    • An apparatus for optically shifting the frequency of an input signal beam includes a first Raman medium that receives an input signal beam, a first pump beam, and a first reference beam to responsively generate an intermediate signal beam comprising a Raman sideband of the first Raman medium. A second Raman medium is optically coupled in series with the first Raman medium. The second Raman medium receives the intermediate signal beam, a second pump beam, and a second reference beam to responsively generate an output signal beam comprising a Raman sideband of the second Raman medium. The generated output signal represents the input signal that is shifted in frequency by a frequency shift that corresponds to the frequency difference between the first and second reference beams.
    • 一种用于光学偏移输入信号光束的频率的装置包括接收输入信号光束的第一拉曼介质,第一泵浦光束和第一参考光束,以响应地产生包括第一拉曼介质的拉曼边带的中间信号光束 。 第二拉曼介质与第一拉曼介质串联光学耦合。 第二拉曼介质接收中间信号光束,第二泵浦光束和第二参考光束,以响应地产生包括第二拉曼介质的拉曼边带的输出信号光束。 所生成的输出信号表示频率偏移与第一和第二参考光束之间的频率差对应的频移的输入信号。