Abstract
Optical coherence tomography (OCT) working in the Fourier frequency domain, rather than in the time domain, can provide a coherence function of light scattered from a bulk sample at one exposure without any mechanical scanning. In this study, frequency-domain OCT is implemented as a single-mode fiber interferometry technique and its performance is quantitatively studied. From complex coherence functions obtained by spectral interferometry, we obtained tomographic images for absorption and dispersion spectra as well as a conventional optical coherence tomography image. As a principle of short-time Fourier transform, the spatial resolution of a spectrogram is lower than the coherence length of a light source. Therefore, the interpretation of spectrograms is not always straightforward.
