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Journal of Biomedical Optics • Open Access

Polarization-sensitive optical coherence tomography using continuous polarization modulation with arbitrary phase modulation amplitude
Author(s): Zenghai Lu; Deepa K. Kasaragod; Stephen J. Matcher

Paper Abstract

We demonstrate theoretically and experimentally that the phase retardance and relative optic-axis orientation of a sample can be calculated without prior knowledge of the actual value of the phase modulation amplitude when using a polarization-sensitive optical coherence tomography system based on continuous polarization modulation (CPM-PS-OCT). We also demonstrate that the sample Jones matrix can be calculated at any values of the phase modulation amplitude in a reasonable range depending on the system effective signal-to-noise ratio. This has fundamental importance for the development of clinical systems by simplifying the polarization modulator drive instrumentation and eliminating its calibration procedure. This was validated on measurements of a three-quarter waveplate and an equine tendon sample by a fiber-based swept-source CPM-PS-OCT system.

Paper Details

Date Published: 8 March 2012
PDF: 4 pages
J. Biomed. Opt. 17(3) 030504 doi: 10.1117/1.JBO.17.3.030504
Published in: Journal of Biomedical Optics Volume 17, Issue 3
Show Author Affiliations
Zenghai Lu, The Univ. of Sheffield (United Kingdom)
Deepa K. Kasaragod, The Univ. of Sheffield (United Kingdom)
Stephen J. Matcher, The Univ. of Sheffield (United Kingdom)

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