Apparatus and method for wavelength detection with fiber bragg grating sensors
    6.
    发明授权
    Apparatus and method for wavelength detection with fiber bragg grating sensors 失效
    用光纤布拉格光栅传感器进行波长检测的装置和方法

    公开(公告)号:US06525308B1

    公开(公告)日:2003-02-25

    申请号:US09208385

    申请日:1998-12-09

    CPC classification number: G01J9/02

    Abstract: A wavelength detector configuration for detecting the Bragg wavelength of at least one Bragg grating in at least one FBG sensor, in which light reflected by each Bragg grating is conducted by fiber couplers into two detector channels, each containing a detector, whereby an evaluator device is provided to detect the signals of the detectors and to determine the Bragg wavelength from a quotient of the detector signals, the detectors of each pair of detector channels having narrowband spectral sensitivities that overlap with one another and who central wavelengths of maximum sensitivity span a wavelength range containing the Bragg wavelength of the corresponding Bragg grating.

    Abstract translation: 一种波长检测器配置,用于检测至少一个FBG传感器中的至少一个布拉格光栅的布拉格波长,其中由每个布拉格光栅反射的光由光纤耦合器传送到两个检测器通道中,每个检测器通道包含检测器,由此评估器装置 提供用于检测检测器的信号并根据检测器信号的商确定布拉格波长,每对检测器通道的检测器具有彼此重叠的窄带光谱灵敏度,以及最大灵敏度的中心波长跨越波长范围 包含相应布拉格光栅的布拉格波长。

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