A tomography apparatus based on a low coherence interferometer according to embodiments of the inventive concepts may include a plurality of wavelength-tunable lasers arranged in parallel, and an optical coupling unit interleaving pulses sequentially outputted from the plurality of wavelength-tunable lasers to increase a wavelength tuning speed of the wavelength-tunable lasers by N times where ‘N’ corresponds to the number of the wavelength-tunable lasers. According to embodiments of the inventive concepts, the tomography apparatus may rapidly increase the wavelength tuning speed by applying the interleaving technique to obtain accurate tomographic image information, and thus the tomography apparatus can be widely used in medical fields (e.g., medical engineering and biomedical engineering), an aerospace field, a spectroscopy field, and a sensor field.
