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    Optical spectrum analyzer having double-pass monochromator
    5.
    发明公开
    Optical spectrum analyzer having double-pass monochromator 失效
    Optischer Spektralanalysator mit einem Doppelmonchromromator。

    公开(公告)号：EP0671615A2

    公开(公告)日：1995-09-13

    申请号：EP95108401.1

    申请日：1992-10-26

    Applicant: Hewlett-Packard Company

    Inventor： Wildnauer, Kenneth Richards ,  Stimple, James Roy ,  Knight, John Douglas ,  West, Joseph N. ,  Broome, Barry G.

    IPC: G01J3/18

    CPC classification number: G01J3/18 ,  G01J3/0221 ,  G01J3/2889 ,  G01J2003/062 ,  G01J2003/069 ,  G01J2003/1819 ,  G01J2003/1828

    Abstract: A scanning monochromator (FIG. 12) comprises means for providing an input light beam (INPUT LIGHT BEAM); a first stage monochromator (252) including a first diffraction grating for diffracting the input light beam (INPUT LIGHT BEAM) and means for rotating the first diffraction grating, the first stage monochromator (252) providing a first stage output light beam; a second stage monochromator (254) including a second diffraction grating for diffracting the first stage output light beam and means for rotating the second diffraction grating, the second diffraction grating diffracting the first stage output light beam such that said first stage output light beam is recombined by the second diffraction grating to provide a second stage output light beam (OUTPUT LIGHT BEAM); and an output aperture (256) for passing a selected portion of the second stage output light beam (OUTPUT LIGHT BEAM) to provide increased selectivity, whereby a high close-in dynamic range is achieved.

    Abstract translation: 扫描单色仪（图12）包括用于提供输入光束（INPUT LIGHT BEAM）的装置; 第一级单色仪（252），包括用于衍射输入光束（INPUT LIGHT BEAM）的第一衍射光栅和用于旋转第一衍射光栅的装置，第一级单色仪（252）提供第一级输出光束; 第二级单色器（254），包括用于衍射第一级输出光束的第二衍射光栅和用于旋转第二衍射光栅的装置，第二衍射光栅衍射第一级输出光束，使得所述第一级输出光束被重新组合 通过第二衍射光栅提供第二级输出光束（OUTPUT LIGHT BEAM）; 以及用于使第二级输出光束（OUTPUT LIGHT BEAM）的选定部分通过以提供增加的选择性的输出孔径（256），由此实现高近似动态范围。

    Optical spectrum analyzer
    6.
    发明公开
    Optical spectrum analyzer 失效
    Optischer Spektralanalysator mit einstellbarer Empfindlichkeit。

    公开(公告)号：EP0543160A1

    公开(公告)日：1993-05-26

    申请号：EP92117933.9

    申请日：1992-10-20

    Applicant: HEWLETT-PACKARD COMPANY

    Inventor： Stimpel, James Roy ,  Azary, Zoltan D. ,  Wildnauer, Kenneth Richards ,  Warwick, Steven David

    IPC: G01J3/28

    CPC classification number: G01J3/2889 ,  G01J3/28 ,  G01J3/30 ,  G01J2003/062 ,  G01J2003/283 ,  G01J2003/2893

    Abstract: An optical spectrum analyzer (FIG. 2) is provided with a user selectable sensitivity (160). Required operating parameters are set in response to user selection of sensitivity (162) to permit measurement of an input light beam (12) at the selected sensitivity. Setting the required parameters includes setting a required gain of a video channel (48, 90, 92, 94, 96) to permit measurement of a specified maximum input signal and to provide the selected sensitivity, setting a required video bandwidth of the video channel (48, 90, 92, 94, 96) to provide the selected sensitivity at the required gain of the video channel (48, 90, 92, 94, 96) and setting a sweep rate to provide the selected sensitivity at the required video bandwidth. When the normal bandwidth of the video channel (48, 90, 92, 94, 96) is not adequate to provide the selected sensitivity, the electrical signal is passed through a digital filter having a filter coefficient (FILTER COEFFICIENT) set to provide the required video bandwidth. A peak detector (90) is incorporated in the video channel (48, 90, 92, 94, 96) to accurately measure signal amplitudes in a fast scanning condition.

    Abstract translation: 光谱分析仪（图2）具有用户可选择的灵敏度（160）。 响应于用户选择灵敏度（162）来设置所需的操作参数，以允许以所选灵敏度测量输入光束（12）。 设置所需的参数包括设置视频通道（48,90,92,94,96）的所需增益，以允许测量指定的最大输入信号并提供所选择的灵敏度，设置视频通道的所需视频带宽（ 以提供视频通道（48,90,92,94,96）所需增益的所选灵敏度，并设置扫描速率以在所需视频带宽上提供所选择的灵敏度。 当视频通道（48,90,92,94,96）的正常带宽不足以提供所选择的灵敏度时，电信号通过设置为提供所需的滤波器系数（FILTER COEFFICIENT）的数字滤波器 视频带宽。 峰值检测器（90）被并入视频通道（48,90,92,94,96）中以在快速扫描条件下精确地测量信号幅度。

    Optical spectrum analyzer having double-pass monochromator
    7.
    发明公开
    Optical spectrum analyzer having double-pass monochromator 失效
    具有双通单色器的光谱分析仪

    公开(公告)号：EP0671615A3

    公开(公告)日：1995-09-20

    申请号：EP95108401.1

    申请日：1992-10-26

    Applicant: Hewlett-Packard Company

    Inventor： Wildnauer, Kenneth Richards ,  Stimple, James Roy ,  Knight, John Douglas ,  West, Joseph N. ,  Broome, Barry G.

    IPC: G01J3/18

    CPC classification number: G01J3/18 ,  G01J3/0221 ,  G01J3/2889 ,  G01J2003/062 ,  G01J2003/069 ,  G01J2003/1819 ,  G01J2003/1828

    Abstract: A scanning monochromator (FIG. 12) comprises means for providing an input light beam (INPUT LIGHT BEAM); a first stage monochromator (252) including a first diffraction grating for diffracting the input light beam (INPUT LIGHT BEAM) and means for rotating the first diffraction grating, the first stage monochromator (252) providing a first stage output light beam; a second stage monochromator (254) including a second diffraction grating for diffracting the first stage output light beam and means for rotating the second diffraction grating, the second diffraction grating diffracting the first stage output light beam such that said first stage output light beam is recombined by the second diffraction grating to provide a second stage output light beam (OUTPUT LIGHT BEAM); and an output aperture (256) for passing a selected portion of the second stage output light beam (OUTPUT LIGHT BEAM) to provide increased selectivity, whereby a high close-in dynamic range is achieved.

    Abstract translation: 扫描单色器（图12）包括用于提供输入光束（INPUT LIGHT BEAM）的装置; 包括用于衍射输入光束的第一衍射光栅（INPUT LIGHT BEAM）和用于旋转第一衍射光栅的装置的第一级单色器（252），第一级单色器（252）提供第一级输出光束; 包括用于衍射第一级输出光束的第二衍射光栅和用于旋转第二衍射光栅的装置的第二级单色器（254），第二衍射光栅衍射第一级输出光束使得所述第一级输出光束被重新组合 由第二衍射光栅提供第二级输出光束（OUTPUT LIGHT BEAM）; 以及用于使第二级输出光束（OUTPUT LIGHT BEAM）的选定部分通过以提供增加的选择性的输出孔径（256），由此实现高接近动态范围。

    Optical spectrum analyzer having adjustable sensitivity
    8.
    发明公开
    Optical spectrum analyzer having adjustable sensitivity 失效
    Optischer Spektralanalysator mit einstellbarer Empfindlichkeit。

    公开(公告)号：EP0647837A1

    公开(公告)日：1995-04-12

    申请号：EP94119858.2

    申请日：1992-10-20

    Applicant: HEWLETT-PACKARD COMPANY

    Inventor： Stimpel, James Roy ,  Azary, Zoltan D. ,  Wildnauer, Kenneth Richards ,  Warwick, Steven David

    IPC: G01J3/28

    CPC classification number: G01J3/2889 ,  G01J3/28 ,  G01J3/30 ,  G01J2003/062 ,  G01J2003/283 ,  G01J2003/2893

    Abstract: An optical spectrum analyzer (FIG. 2) is provided with a user selectable sensitivity (160). Required operating parameters (172, 174, 176) are set in response to user selection of sensitivity (162) to permit measurement of an input light beam (12) at the selected sensitivity (160). Setting the required parameters (172, 174, 176) includes setting a required gain (172) of a video channel (48, 90, 92, 94, 96) to permit measurement of a specified maximum input signal and to provide the selected sensitivity (160), setting a required video bandwidth (174) of the video channel (48, 90, 92, 94, 96) to provide the selected sensitivity (160) at the required gain (172) of the video channel (48, 90, 92, 94, 96) and setting a sweep rate (176) to provide the selected sensitivity (160) at the required video bandwidth (174). When the normal bandwidth of the video channel (48, 90, 92, 94, 96) is not adequate to provide the selected sensitivity (160), the electrical signal is passed through a digital filter (100) having a filter coefficient (FILTER COEFFICIENT) set to provide the required video bandwidth (174). A peak detector (90) is incorporated in the video channel (48, 90, 92, 94, 96) to accurately measure signal amplitudes in a fast scanning condition.

    Abstract translation: 光谱分析仪（图2）具有用户可选择的灵敏度（160）。 所需的操作参数（172,174,176）响应用户灵敏度选择（162）设置，以允许以所选灵敏度（160）测量输入光束（12）。 设置所需参数（172,174,176）包括设置视频通道（48,90,92,94,96）的所需增益（172）以允许测量指定的最大输入信号并提供所选择的灵敏度（ 160），设置所述视频通道（48,90,92,94,96）的所需视频带宽（174）以将所选择的灵敏度（160）提供在所述视频通道（48,90,94,96,96）的所需增益（172） （176），并且设置扫描速率（176）以在所需的视频带宽（174）提供所选择的灵敏度（160）。 当视频通道（48,90,92,94,96）的正常带宽不足以提供所选择的灵敏度（160）时，电信号通过具有滤波器系数（FILTER COEFFICIENT）的数字滤波器（100） ）设置为提供所需的视频带宽（174）。 峰值检测器（90）被并入视频通道（48,90,92,94,96）中以在快速扫描条件下精确地测量信号幅度。

    Optical spectrum analyzer having double-pass monochromator
    9.
    发明公开
    Optical spectrum analyzer having double-pass monochromator 失效
    Optischer Spektralanalysator mit einem Doppelmonchromromator。

    公开(公告)号：EP0540966A1

    公开(公告)日：1993-05-12

    申请号：EP92118251.5

    申请日：1992-10-26

    Applicant: Hewlett-Packard Company

    Inventor： Wildnauer, Kenneth Richards ,  Stimple, James Roy ,  Knight, John Douglas ,  West, Joseph N. ,  Broome, Barry G.

    IPC: G01J3/18 ,  G01J3/28

    CPC classification number: G01J3/18 ,  G01J3/0221 ,  G01J3/2889 ,  G01J2003/062 ,  G01J2003/069 ,  G01J2003/1819 ,  G01J2003/1828

    Abstract: A double-pass scanning monochromator (FIG. 1) for use in an optical spectrum analyzer (FIG. 11) includes an input optical fiber (10) for emitting an input light beam (12), a diffraction grating (16) for diffracting the input light beam (12) to produce a spatially dispersed light beam (20), a slit (24) for passing a selected portion of the dispersed light beam (20), a motor (90) for rotating the diffraction grating (16), a shaft angle encoder (92) for sensing grating position, an output optical fiber (42). The light (30) that passes through the slit (24) is directed to the diffraction grating (16) and is recombined by the diffraction grating (16) to produce an output light beam (36). The light beam (12) to be analyzed is incident on the diffraction grating (16) during first and second passes. A polarization rotation device (32) rotates the polarization components of the light beam (30) by 90° between the first and second passes so that the output of the monochromator (FIG. 1) is independent of the polarization of the input light beam (12). The output optical fiber (42) is translated by a micropositioning assembly (80) in a plane perpendicular to the output light beam (36) during rotation of the diffraction grating (16) to automatically track the output light beam (36) and to provide optical chopping.

    Abstract translation: 用于光谱分析仪（图11）的双通扫描单色仪（图1）包括用于发射输入光束（12）的输入光纤（10），衍射光栅（16） 输入光束（12）以产生空间分散的光束（20），用于使分散光束（20）的选定部分通过的狭缝（24）;用于旋转衍射光栅（16）的马达（90） 用于感测光栅位置的轴角编码器（92），输出光纤（42）。 穿过狭缝（24）的光（30）被引导到衍射光栅（16），并被衍射光栅（16）重新组合以产生输出光束（36）。 待分析的光束（12）在第一次和第二遍期间入射到衍射光栅（16）上。 偏振旋转装置（32）在第一遍和第二遍之间使光束（30）的偏振分量旋转90°，使得单色器（图1）的输出与输入光束的偏振无关（ 12）。 输出光纤（42）在衍射光栅（16）旋转期间在垂直于输出光束（36）的平面内由微定位组件（80）平移以自动跟踪输出光束（36）并提供 光斩

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