Resolving absolute depth in circular-ranging optical coherence tomography by using a degenerate frequency comb

• DOI: 10.1364/ol.379968
• Publication Date: 2019-12-04T19:57:04Z
• Authors: Norman Lippok; Benjamin J. Vakoc
• Keywords: Ranging

In Fourier-domain optical coherence tomography, an interference signal is generated that spans RF bandwidth proportional to the product of three parameters: imaging range, speed, and inverse axial resolution. Circular-ranging tomography (CR-OCT)architectures were introduced ease long-range by decoupling range from bandwidth. As a consequence, present CR-OCT systems resolve relative, but not absolute, depth location scatterers. We introduce here modified implementation uses degenerate frequency comb source allows recovery absolute information while only minimally impacting previously described compression benefits CR. show this can be created relatively simple modifications existing designs, we ranging capabilities through studies simulations.