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    • 8. 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。
    • 10. 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。