Signal conrol module and low coherence interferometry

A signal control module is integrated to a low coherence interferometry which includes an one-dimensional(1D) array image sensor. The signal control module includes an imaging acquisition controller and a signal controller. The imaging acquisition controller sends a 1D image acquisition control signal. The signal controller sends a two-dimensional(2D) image acquisition control signal, wherein the 1D and 2D image acquisition control signals are synchronized with each other. The 1D array image sensor captures 1D imaging information of different positions along a direction on an object-to-be-tested according 1D and 2D image acquisition control signals. These 1D imaging information constitute 2D imaging information. Furthermore, a low coherence interferometry is provided.