BIOS 2019

February 4th, 2019

Active demodulation schemes for circular ranging optical coherence tomography

Session 1: Advances in Technology I
Paper 10867-4
Monday, 02/04/2019
9:15 AM - 9:30 AM

In Fourier-domain optical coherence tomography, finite acquisition bandwidths can limit the achievable imaging range, axial resolution, and/or imaging speed. Circular ranging (CR) methods were recently demonstrated to overcome these barriers. To avoid overlap of artefacts, CR is performed through the combination of a frequency comb optical source and the use of complex demodulation. In this work, we describe the extension of active demodulation schemes to CR OCT systems using acousto-optic modulators and phase modulators. We highlight the limitations when existing active demodulation schemes are applied naively to CR systems and highlight CR-specific alterations that overcome these limitations.