This paper presents an improved data processing method, which is referred to as the tracking intersection method, for a fibre-based dual-detector differential chromatic confocal probe with a mode-locked femtosecond laser source. In the dual-detector differential confocal system, two fibre detectors of an optical spectrum analyzer are employed to detect the spectra of the confocal signals. One of the fibre detectors, referred to as the measurement detector, is located at the confocal position of the confocal system, and the other fibre detector, referred to as the reference detector, is located at a position with a certain offset from the confocal position. In the tracking intersection method, the Z -directional displacement of a measurement object is derived from tracking the wavelength at the intersection point of the two fibre detector outputs. A new algorithm is proposed to generate a normalized output with a sharp peak at the intersection wavelength, from which the int...

中文翻译：

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锁模飞秒激光器用于差分色共焦探头的新信号处理方法

本文提出了一种改进的数据处理方法，称为跟踪相交方法，用于带有锁模飞秒激光源的基于光纤的双探测器差分色共聚焦探头。在双检测器差分共聚焦系统中，使用了光谱分析仪的两个光纤检测器来检测共聚焦信号的光谱。其中一个光纤检测器（称为测量检测器）位于共聚焦系统的共聚焦位置，另一个光纤检测器（称为参考检测器）位于与共聚焦位置有一定偏移的位置。在跟踪相交方法中，通过跟踪两个光纤检测器输出的相交点处的波长，得出测量对象的Z方向位移。