Polarization-sensitive optical coherence tomography using continuous polarization modulation with arbitrary phase modulation amplitude

Zenghai Lu; Deepa K. Kasaragod; Stephen J. Matcher

doi:10.1117/1.JBO.17.3.030504

8 March 2012 Polarization-sensitive optical coherence tomography using continuous polarization modulation with arbitrary phase modulation amplitude

Zenghai Lu, Deepa K. Kasaragod, Stephen J. Matcher

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Journal of Biomedical Optics, Vol. 17, Issue 3, 030504 (March 2012). https://doi.org/10.1117/1.JBO.17.3.030504

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.

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Zenghai Lu, Deepa K. Kasaragod, and Stephen J. Matcher "Polarization-sensitive optical coherence tomography using continuous polarization modulation with arbitrary phase modulation amplitude," Journal of Biomedical Optics 17(3), 030504 (8 March 2012). https://doi.org/10.1117/1.JBO.17.3.030504

Published: 8 March 2012

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KEYWORDS

Phase modulation

Optical coherence tomography

Calibration

Modulation

Phase measurement

Polarization

Signal to noise ratio

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