Full-range Fourier-domain optical coherence tomography based on Mach–Zehnder interferometer

•A FR-FDOCT was proposed based on Mach–Zehnder interferometer with a tilted mirror which could generate simultaneously a series of accurate phase-delay interference signal.•FR-FDOCT is capable of acquiring artifact-free images by construction of both amplitude and phase of interferogram from multiple sets of phase-delay signals.•The Mach–Zehnder interferometric structure with a tilted mirror in reference arm could actively promote the innovation and development of OCT technology.