Multiband swept laser source for frequency domain optical coherence tomography

A multiband frequency-swept laser source is proposed using wavelength division multiplexing based on the periodic transfer function of a scanning Fabry-Perot interferometer. The optical spectra from different wavelength bands can be combined to create an ultra wideband light source which may significantly improve the spatial resolution of optical coherent tomography (OCT). Parallel processing for data measured in different wavelength bands was used to speed up signal analysis. A proof-of-concept experiment was conducted to demonstrate the feasibility of the proposed technique.