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    • 1. 发明授权
    • Spectral power monitors with active alignment compensation
    • 具有主动对准补偿的光谱功率监视器
    • US06504976B1
    • 2003-01-07
    • US09992778
    • 2001-11-14
    • Pavel G. PolynkinJeffrey P. WildeMichael J. Timmons
    • Pavel G. PolynkinJeffrey P. WildeMichael J. Timmons
    • G02B626
    • G02B6/4215G01J3/0224G01J3/2803G01J3/447G01J2003/2866G02B6/2713G02B6/2793G02B6/2931G02B6/4213G02B6/4225G02B6/4227
    • This invention provides a spectral power monitoring apparatus that uses a diffraction grating to separate a multi-wavelength optical signal along with a reference signal by wavelength into multiple spectral channels and a reference spectral component having a predetermined relative alignment, impinging onto an array of optical power sensors. The optical power sensor array may be configured such that the power levels of the spectral channels impinging onto the optical power sensor array can be related to the electrical signals thus produced by a predetermined conversion matrix. The spectral power monitoring apparatus of the present invention further includes an alignment compensation unit, which monitors the real-time impinging position of the reference spectral component and ensures that the corresponding conversion matrix is used for converting the measured electrical signals to the optical power levels of interest. The spectral power monitoring apparatus of the present invention is well suited for optical networking applications.
    • 本发明提供了一种光谱功率监测装置,其使用衍射光栅将多波长光信号与参考信号一起通过波长分离成多个光谱通道和具有预定相对对准的参考光谱分量,照射到光功率阵列上 传感器。 光功率传感器阵列可以被配置为使得入射到光功率传感器阵列上的光谱通道的功率电平可以与由预定转换矩阵产生的电信号相关。 本发明的光谱功率监视装置还包括对准补偿单元,其监视参考光谱分量的实时入射位置,并确保相应的转换矩阵用于将测量的电信号转换为 利益。 本发明的频谱功率监测装置非常适用于光网络应用。
    • 2. 发明授权
    • Optical spectral power monitors employing frequency-division-multiplexing detection schemes
    • 采用频分复用检测方案的光谱功率监视器
    • US06753960B1
    • 2004-06-22
    • US10006533
    • 2001-12-05
    • Pavel G. PolynkinJeffrey P. Wilde
    • Pavel G. PolynkinJeffrey P. Wilde
    • G01J328
    • G01J3/433G01J3/02G01J3/021G01J3/26G01J3/2846G01J2001/4242G01J2003/2866G02B6/12004G02B6/272G02B6/2793G02B6/2931G02B6/29311G02B6/29313G02B6/29391G02B6/4215G02B6/4249
    • The present invention provides a method and apparatus for optical spectral power monitoring employing novel frequency-division-multiplexing detection schemes. The optical spectral power monitoring apparatus of the present invention uses a wavelength-dispersing means (e.g., a diffraction grating) to separate a multi-wavelength optical signal into multiple spectral channels, and an array of beam-modulating elements (e.g., micromirrors) positioned such that each beam-modulating element receives a unique one of the spectral channels. The beam-modulating elements are individually controllable such that the optical power levels of the spectral channels coupled into an output port carry distinct dither modulation signals. By performing a synchronous detection of the dither modulation signals, in conjunction with a predetermined calibration table, an optical power spectrum of the multi-wavelength optical signal can be derived. Such dither modulation signals may also be used as “identification markers” (or frequency tags) for identifying individual spectral channels in an optical networking application.
    • 本发明提供一种采用新型频分复用检测方案的光谱功率监测方法和装置。 本发明的光谱功率监测装置使用波长分散装置(例如,衍射光栅)将多波长光信号分离成多个光谱通道,并且将光束调制元件(例如,微镜)的阵列定位 使得每个光束调制元件接收唯一的光谱通道之一。 光束调制元件是可单独控制的,使得耦合到输出端口的光谱通道的光功率电平携带不同的抖动调制信号。 通过执行抖动调制信号的同步检测,结合预定的校准表,可以导出多波长光信号的光功率谱。 这种抖动调制信号也可以用作用于识别光学网络应用中的各个频谱信道的“识别标记”(或频率标签)。
    • 5. 发明授权
    • Optical spectral power monitors employing time-division-multiplexing detection schemes
    • 采用时分复用检测方案的光谱功率监视器
    • US07177496B1
    • 2007-02-13
    • US10033549
    • 2001-12-27
    • Pavel G. PolynkinMark H. GarrettJeffrey P. Wilde
    • Pavel G. PolynkinMark H. GarrettJeffrey P. Wilde
    • G02B6/00
    • H04J14/02G01J3/021G01J3/0224G01J3/32G02B6/2706G02B6/2793G02B6/2931G02B6/29311G02B6/29397G02B6/4249G02B6/425H04J14/08
    • The present invention provides a method and apparatus for optical spectral power monitoring that employ a time-division-multiplexed detection scheme. The optical spectral power monitoring apparatus of the present invention uses a wavelength-dispersing means such as a diffraction grating to separate a multi-wavelength optical signal into multiple spectral channels and an array of beam-manipulating elements positioned to correspond with the spectral channels. The beam-manipulating elements are individually controllable so as to direct the spectral channels into an optical detector in a time-division-multiplexed sequence. The optical spectral power monitoring apparatus may further employ a polarization diversity scheme, thereby becoming polarization insensitive. This enables the apparatus of the present invention to enhance spectral resolution, while providing improved accuracy in optical spectral power detection. Accordingly, a variety of novel optical spectral power monitors can be constructed according to the present invention, that are well suitable for WDM optical networking applications.
    • 本发明提供一种采用时分复用检测方案的光谱功率监测方法和装置。 本发明的光谱功率监测装置使用诸如衍射光栅的波长分散装置将多波长光信号分离成多个光谱通道,以及定位成对应于光谱通道的光束操纵元件的阵列。 光束操纵元件是可单独控制的,以便以时分复用顺序将光谱通道引导到光学检测器中。 光谱功率监测装置还可以采用极化分集方案,从而变得极化不敏感。 这使得本发明的装置能够提高光谱分辨率,同时提供光谱功率检测的改善的精度。 因此,根据本发明,可以构建各种新颖的光谱功率监视器,其非常适合于WDM光网络应用。
    • 6. 发明授权
    • Optical spectral power monitors employing polarization deversity scheme
    • 采用偏振方向的光谱功率监视器
    • US06804428B1
    • 2004-10-12
    • US10022303
    • 2001-12-14
    • Mark H. GarrettJeffrey P. WildePavel G. Polynkin
    • Mark H. GarrettJeffrey P. WildePavel G. Polynkin
    • G02B612
    • G01J3/447G01J3/0224G01J3/2803G01J2003/2866G02B6/2713G02B6/2793G02B6/2931G02B6/4215
    • This invention provides a method and apparatus for spectral power monitoring by use of a polarization diversity scheme. In the present invention, a multi-wavelength optical signal is first decomposed into first and second polarization components, and the second polarization component is subsequently rotated by 90-degrees, prior to impinging onto a diffraction grating that provides a higher diffraction efficiency for the first polarization component. The diffraction grating separates the first and second polarization components by wavelength respectively into first and second sets of optical beams, impinging onto an array of optical power sensors. The inventive optical spectral power monitoring apparatus thus is able to minimize the insertion loss, while providing enhanced spectral resolution. Further, by modulating the first and second sets of optical beams prior to impinging onto the optical power sensor array, the present invention enables an optical power spectrum associated with each polarization component in the multi-wavelength optical signal to be separately determined.
    • 本发明提供了一种通过使用偏振分集方案进行光谱功率监测的方法和装置。 在本发明中,首先将多波长光信号分解为第一和第二偏振分量,然后在撞击衍射光栅之前第二偏振分量随后旋转90度,该衍射光栅为第一和第二偏振分量提供较高的衍射效率 偏振分量。 衍射光栅将波长的第一和第二偏振分量分别分离成第一和第二组光束,入射到光功率传感器阵列上。 因此,本发明的光谱功率监测装置能够最小化插入损耗,同时提供增强的光谱分辨率。 此外,通过在入射到光功率传感器阵列之前调制第一和第二组光束,本发明使得能够分开地确定与多波长光信号中的每个偏振分量相关联的光功率谱。
    • 8. 发明授权
    • Method and apparatus for servo-based spectral array alignment in optical systems
    • 光学系统中基于伺服的光谱阵列对准的方法和装置
    • US06507685B1
    • 2003-01-14
    • US09961565
    • 2001-09-20
    • Pavel G. PolynkinJeffrey P. Wilde
    • Pavel G. PolynkinJeffrey P. Wilde
    • G02B626
    • G02B6/4215G01J3/0224G01J3/2803G01J3/447G01J2003/2866G02B6/2713G02B6/2793G02B6/2931G02B6/4213G02B6/4225G02B6/4227
    • This invention provides a novel method and apparatus which use a wavelength-dispersing means such as a diffraction grating to spatially separate a multi-wavelength optical signal along with a reference signal by wavelength into multiple spectral channels and a reference spectral component in a spectral array with a predetermined relative alignment. By aligning the reference spectral component at a predetermined location, the spectral channels simultaneously impinge onto designated locations, e.g., on an array of beam-receiving elements positioned in accordance with the spectral array. The reference spectral component may be further maintained at the predetermined location by way of servo-control, thereby ensuring that the spectral channels stay aligned at the designated locations. The present invention can be used to construct a new line of servo-based optical systems, including spectral power monitors and optical multiplexers/demultiplexers, for WDM optical networking applications.
    • 本发明提供了一种新颖的方法和装置,其使用诸如衍射光栅的波长分散装置将多波长光信号与参考信号一起通过波长空间分离成多个光谱通道和光谱阵列中的参考光谱分量, 预定的相对对准。 通过在预定位置对准参考光谱分量,光谱通道同时撞击到指定位置,例如在根据光谱阵列定位的波束接收元件的阵列上。 参考频谱分量可以通过伺服控制进一步保持在预定位置,从而确保频谱信道在指定位置保持对准。 本发明可用于构建用于WDM光网络应用的基于伺服的光学系统的新系列,包括光功率监视器和光复用器/解复用器。