Fiber-optic automatic gain control systems and methods
    1.
    发明授权
    Fiber-optic automatic gain control systems and methods 有权
    光纤自动增益控制系统及方法

    公开(公告)号:US08774635B2

    公开(公告)日:2014-07-08

    申请号:US13173155

    申请日:2011-06-30

    IPC分类号: H04B10/00 H04B10/112

    CPC分类号: H04B10/1121

    摘要: Methods and systems to control a gain applied to a free-space optical (FSO) signal to reduce time-varying intensity fluctuations. An optical pre-amplifier may provide a first, relatively moderate gain with low noise factor (NF). A second optical amplifier may provide a second gain. Amplification may include doped fiber amplification (DFA), such as erbium-doped fiber amplification (EDFA) and/or Raman amplification. A variable optical attenuator (VOA) may be controllable with a relatively fast response time to reduce the time-varying intensity fluctuations. The VOA may effectively control an overall system gain. The gain of the first and/or second optical amplifier may also be controllable to reduce the time-varying intensity fluctuations. Optical intensities may be detected at one or more locations to support one or more feed-forward and/or feedback control loops. A clamp may be applied when an optical power reaches a threshold.

    摘要翻译: 用于控制应用于自由空间光(FSO)信号的增益以减少时变强度波动的方法和系统。 光学前置放大器可以提供具有低噪声因子(NF)的第一相对适度的增益。 第二光放大器可以提供第二增益。 扩增可以包括掺杂光纤放大(DFA),例如掺铒光纤放大(EDFA)和/或拉曼放大。 可变光衰减器(VOA)可以以相对较快的响应时间来控制,以减少随时间变化的强度波动。 美国之音可以有效地控制整个系统的增益。 第一和/或第二光放大器的增益也可以是可控的,以减少随时间变化的强度波动。 可以在一个或多个位置处检测光强度以支持一个或多个前馈和/或反馈控制回路。 当光功率达到阈值时,可以应用钳位。

    Fiber-Optic Automatic Gain Control Systems and Methods
    3.
    发明申请
    Fiber-Optic Automatic Gain Control Systems and Methods 有权
    光纤自动增益控制系统和方法

    公开(公告)号:US20130004181A1

    公开(公告)日:2013-01-03

    申请号:US13173155

    申请日:2011-06-30

    IPC分类号: G02F2/00 H04B10/06

    CPC分类号: H04B10/1121

    摘要: Methods and systems to control a gain applied to a free-space optical (FSO) signal to reduce time-varying intensity fluctuations. An optical pre-amplifier may provide a first, relatively moderate gain with low noise factor (NF). A second optical amplifier may provide a second gain. Amplification may include doped fiber amplification (DFA), such as erbium-doped fiber amplification (EDFA) and/or Raman amplification. A variable optical attenuator (VOA) may be controllable with a relatively fast response time to reduce the time-varying intensity fluctuations. The VOA may effectively control an overall system gain. The gain of the first and/or second optical amplifier may also be controllable to reduce the time-varying intensity fluctuations. Optical intensities may be detected at one or more locations to support one or more feed-forward and/or feedback control loops. A clamp may be applied when an optical power reaches a threshold.

    摘要翻译: 用于控制应用于自由空间光(FSO)信号的增益以减少时变强度波动的方法和系统。 光学前置放大器可以提供具有低噪声因子(NF)的第一相对适度的增益。 第二光放大器可以提供第二增益。 扩增可以包括掺杂光纤放大(DFA),例如掺铒光纤放大(EDFA)和/或拉曼放大。 可变光衰减器(VOA)可以以相对较快的响应时间来控制,以减少随时间变化的强度波动。 美国之音可以有效地控制整个系统的增益。 第一和/或第二光放大器的增益也可以是可控的,以减少随时间变化的强度波动。 可以在一个或多个位置处检测光强度以支持一个或多个前馈和/或反馈控制回路。 当光功率达到阈值时,可以应用钳位。

    High Speed Error Detector for Fading Propagation Channels
    4.
    发明申请
    High Speed Error Detector for Fading Propagation Channels 有权
    用于衰减传播通道的高速误差检测器

    公开(公告)号:US20120063773A1

    公开(公告)日:2012-03-15

    申请号:US13045857

    申请日:2011-03-11

    IPC分类号: H04B17/00 H04B10/08

    CPC分类号: H04B10/1121

    摘要: A customized bit error rate tester that characterizes data transmission through a free space optical channel that overcomes the limitations of commercial based bit error rate testers by providing visibility into packet based channel capacity by measuring bit-level statistics not dominated by fades. In this manner, fade characteristics can be measured and a relationship between fade time and data packet lengths can be developed. Further, analog outputs provide visual real-time data link statistics.

    摘要翻译: 一种定制的误码率测试仪,其特征在于通过自由空间光通道的数据传输,其通过测量未被淡入淡出的位级统计信息来提供基于分组的信道容量的可见性来克服基于商业的误码率测试仪的限制。 以这种方式,可以测量褪色特性,并且可以开发淡化时间与数据包长度之间的关系。 此外,模拟输出提供可视化实时数据链路统计。

    Apparatus and Method for Stabilizing Power to an Optical Multimode Receiver
    5.
    发明申请
    Apparatus and Method for Stabilizing Power to an Optical Multimode Receiver 有权
    用于将光功率稳定到光模式接收机的装置和方法

    公开(公告)号:US20110206386A1

    公开(公告)日:2011-08-25

    申请号:US13029768

    申请日:2011-02-17

    IPC分类号: H04B10/06

    CPC分类号: H04B10/674 H04B10/2581

    摘要: To stabilize power to an optical multimode receiver a multimode variable optical attenuator is connected to the receiver with the attenuator's voltage being controlled using a feedback signal provided by an output detector, the signal being processed using a control algorithm based on proportional-integrate-differential theory.

    摘要翻译: 为了稳定光多模接收机的功率,多模可变光衰减器连接到接收机,衰减器的电压由输出检测器提供的反馈信号进行控制,该信号使用基于比例积分微分理论的控制算法进行处理 。

    High speed error detector for fading propagation channels
    7.
    发明授权
    High speed error detector for fading propagation channels 有权
    用于衰落传播通道的高速误差检测器

    公开(公告)号:US08667343B2

    公开(公告)日:2014-03-04

    申请号:US13045857

    申请日:2011-03-11

    IPC分类号: G06F11/00

    CPC分类号: H04B10/1121

    摘要: A customized bit error rate tester that characterizes data transmission through a free space optical channel that overcomes the limitations of commercial based bit error rate testers by providing visibility into packet based channel capacity by measuring bit-level statistics not dominated by fades. In this manner, fade characteristics can be measured and a relationship between fade time and data packet lengths can be developed. Further, analog outputs provide visual real-time data link statistics.

    摘要翻译: 一种定制的误码率测试仪,其特征在于通过自由空间光通道的数据传输,其通过测量未被淡入淡出的位级统计信息来提供基于分组的信道容量的可见性来克服基于商业的误码率测试仪的限制。 以这种方式,可以测量褪色特性,并且可以开发淡化时间与数据包长度之间的关系。 此外,模拟输出提供可视化实时数据链路统计。

    Cueing system for universal optical receiver
    9.
    发明授权
    Cueing system for universal optical receiver 有权
    通用光接收机的提示系统

    公开(公告)号:US08971701B2

    公开(公告)日:2015-03-03

    申请号:US13603046

    申请日:2012-09-04

    CPC分类号: H04B10/616 H04B10/0795

    摘要: A universal optical receiver may include an optical channel monitor configured to acquire spectral data for an optical signal on at least one selected optical channel, a tunable local oscillator configured to be tuned to a center frequency of the optical signal on the at least one selected optical channel, a storage device configured to store data associated with the optical signal responsive to acquisition of the spectral data and tuning of the tunable local oscillator, and processing circuitry configured to execute an algorithm that employs a plurality of binary distinctions based on physical characteristics of the optical signal and employs at least one calculation of figure of merit associated with a series of parameter values of the optical signal to identify a format of the optical signal.

    摘要翻译: 通用光学接收器可以包括光信道监视器,其被配置为在至少一个选择的光信道上获取用于光信号的光谱数据,可调谐本地振荡器,被配置为被调谐到所述至少一个所选光学器件上的光信号的中心频率 通道,被配置为存储与所述光信号相关联的数据的存储设备,所述数据响应于所述频谱数据的获取和所述可调本地振荡器的调谐,以及被配置为执行基于所述可调谐本地振荡器的物理特性采用多个二进制区别的算法的处理电路 光信号,并且采用与光信号的一系列参数值相关联的品质因数的至少一个计算,以识别光信号的格式。

    Cueing System for Universal Optical Receiver
    10.
    发明申请
    Cueing System for Universal Optical Receiver 有权
    通用光接收机提示系统

    公开(公告)号:US20140064723A1

    公开(公告)日:2014-03-06

    申请号:US13603046

    申请日:2012-09-04

    IPC分类号: H04B10/61 H04B10/079

    CPC分类号: H04B10/616 H04B10/0795

    摘要: A universal optical receiver may include an optical channel monitor configured to acquire spectral data for an optical signal on at least one selected optical channel, a tunable local oscillator configured to be tuned to a center frequency of the optical signal on the at least one selected optical channel, a storage device configured to store data associated with the optical signal responsive to acquisition of the spectral data and tuning of the tunable local oscillator, and processing circuitry configured to execute an algorithm that employs a plurality of binary distinctions based on physical characteristics of the optical signal and employs at least one calculation of figure of merit associated with a series of parameter values of the optical signal to identify a format of the optical signal.

    摘要翻译: 通用光学接收器可以包括光信道监视器,其被配置为在至少一个选择的光信道上获取用于光信号的光谱数据,可调谐本地振荡器,被配置为被调谐到所述至少一个所选光学器件上的光信号的中心频率 通道,被配置为存储与所述光信号相关联的数据的存储设备,所述数据响应于所述频谱数据的获取和所述可调本地振荡器的调谐,以及被配置为执行基于所述可调谐本地振荡器的物理特性采用多个二进制区别的算法的处理电路 光信号,并且采用与光信号的一系列参数值相关联的品质因数的至少一个计算,以识别光信号的格式。