The Compensation of the Fiber-Optic Probe's Spectrum Attenuation with the Fourier Transform

To decrease the interference to the reflected light from the object in the chromatic measuring system, the fiber-optic probe is used as the receiver and transmission part. But the probe brings the distortion to the chromatic measurement. This paper put forward a method based on the Fourier Transform to compensate the non-linear attenuation of fiber-optic probe in a spectrum-collecting system. In the scope of visible light, with a series of experiments a adjustable function for the probe is obtained. Using this adjustable function, the error of fiber-optic transmission can be lowed less than 1%. It is proved that this method is fit for compensating of fiber-optic probe's spectrum attenuation.