title: Extending the effective imaging range of Fourier-domain optical coherence tomography using a fiber optic switch.
abstract: The effective imaging range of Fourier-domain optical coherence tomography is limited by falloff. We present a very simple method to extend the effective imaging range with dual reference arms and a high-speed fiber optic switch. The effective imaging range was increased by 1.8 with two reference arms compared with a single reference arm. Ex vivo tissue images show significantly improved sensitivity over a large imaging range. Further extension of the imaging range is feasible with multiple reference arms. The tradeoff between image acquisition rate and imaging range is discussed.
authors.affiliation: Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA. hxw26@case.edu
authors.forename: Hui
authors.initials: H
authors.lastname: Wang
authors.forename: Yinsheng
authors.initials: Y
authors.lastname: Pan
authors.forename: Andrew M
authors.initials: AM
authors.lastname: Rollins
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D005583:Fourier Analysis; D007089:Image Enhancement / Q000295:instrumentation*; D055100:Optical Fibers; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D041623:Tomography, Optical Coherence / Q000295:instrumentation*