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    • 4. 发明申请
    • OPTICAL SYSTEM THAT IMPROVES SPECTRALLY DISTORTED SIGNALS
    • 改善光谱失配信号的光学系统
    • WO2003003059A2
    • 2003-01-09
    • PCT/US2002/012992
    • 2002-04-23
    • CORNING INCORPORATED
    • DOWNIE, John, D.
    • G02B
    • H04B10/67G02B6/293G02B6/29322G02B6/29358G02B6/29359G02B6/29361G02B6/29395H04B10/506H04B10/572H04B10/675
    • An optical system that maximizes signal quality related to spectral shape of an optical signal includes a light source module, a light receiver module, a plurality of fixed optical filters and a tunable optical filter. The light source module includes a light source that provides an optical signal to an optical fiber that includes a plurality of optical fiber segments. The light receiver module includes a receiver input that receives the optical signal from one of the plurality of the optical fiber segments. The plurality of fixed optical filters filter the optical signal and are coupled between the light source module and the light receiver module by the plurality of optical fiber segments. The tunable optical filter includes a control input, a filter input and a filter output. The filter input receives the optical signal and the filter output provides a filtered optical signal. A center filter frequency of the tunable optical filter is varied to maximize signal quality exhibited by the filtered optical signal responsive to a control signal on the control input.
    • 最大化与光信号的光谱形状相关的信号质量的光学系统包括光源模块,光接收器模块,多个固定光学滤波器和可调光学滤波器。 光源模块包括向包括多个光纤段的光纤提供光信号的光源。 光接收器模块包括从多个光纤段中的一个接收光信号的接收器输入端。 多个固定光学滤波器对光学信号进行滤波并且通过多个光纤段耦合在光源模块和光接收器模块之间。 可调滤光器包括一个控制输入端,一个滤波器输​​入端和一个滤波器输​​出端。 滤波器输入端接收光信号,滤波器输出端提供滤波后的光信号。 响应于控制输入上的控制信号,可变滤光器的中心滤波器频率被改变以最大化由滤波后的光信号表现出的信号质量。