title: Influence and compensation of autocorrelation terms in depth-resolved spectroscopic Fourier-domain optical coherence tomography.
abstract: We demonstrate depth-resolved spectral absorption measurements in the wavelength range from 750 to 850 nm using a broadband light source consisting of three spectrally shifted superluminescent light-emitting diode modules and a low-cost spectrometer-based Fourier-domain optical coherence tomography system. We present the theoretical model and experimental verification of interferences between autocorrelation terms and the signal carrying cross-correlation terms, strongly affecting the absorption measurements. A simple background subtraction, minimizing the artifacts caused by the interferences of autocorrelation and cross-correlation terms, is presented.
authors.affiliation: Bern University of Applied Science, Optics and Photonics Laboratory, Quellgasse 21, Biel CH-2501, Switzerland. patrick.steiner@bfh.ch
authors.forename: Patrick
authors.initials: P
authors.lastname: Steiner
authors.forename: Christoph
authors.initials: C
authors.lastname: Meier
authors.forename: Volker M
authors.initials: VM
authors.lastname: Koch
mesh_terms: D000465:Algorithms; D016477:Artifacts; D004867:Equipment Design; D007090:Image Interpretation, Computer-Assisted; D008962:Models, Theoretical; D012815:Signal Processing, Computer-Assisted; D013057:Spectrum Analysis / Q000295:instrumentation; D041623:Tomography, Optical Coherence / Q000295:instrumentation* / Q000379:methods*