Polarization-sensitive optical coherence tomography measurements with different phase modulation amplitude when using continuous polarization modulation

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

doi:10.1117/12.911457

30 January 2012 Polarization-sensitive optical coherence tomography measurements with different phase modulation amplitude when using continuous polarization modulation

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

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Proceedings Volume 8213, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI; 82132S (2012) https://doi.org/10.1117/12.911457
Event: SPIE BiOS, 2012, San Francisco, California, United States

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 measurements with different phase modulation amplitude when using continuous polarization modulation", Proc. SPIE 8213, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI, 82132S (30 January 2012); https://doi.org/10.1117/12.911457

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KEYWORDS

Optical coherence tomography

Modulation

Phase modulation

Polarization

Calibration

Phase shift keying

Birefringence

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