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Optically buffered Jones-matrix-based multifunctional optical coherence tomography with polarization mode dispersion

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  • 1Computational Optics Group, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki, Japan ; Computational Optics and Ophthalmology Group, Tsukuba, Japan.

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Summary

This study presents a novel method to correct polarization mode dispersion (PMD) in Jones-matrix-based polarization-sensitive optical coherence tomography (JM-OCT). The technique combines hardware changes and software correction to improve imaging quality, especially in systems with optical buffering.

Keywords:
(110.4500) Optical coherence tomography(110.5405) Polarimetric imaging(120.5410) Polarimetry(170.4460) Ophthalmic optics and devices(170.4470) Ophthalmology(170.4500) Optical coherence tomography

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Area of Science:

  • Optical Engineering
  • Biomedical Imaging
  • Metrology

Background:

  • Polarization mode dispersion (PMD) significantly impairs Jones-matrix-based polarization-sensitive optical coherence tomography (JM-OCT) performance.
  • Optically buffered JM-OCT systems are particularly susceptible to PMD due to long fiber optic paths.
  • Effective PMD correction is crucial for maintaining high-resolution and accurate polarization-sensitive OCT imaging.

Purpose of the Study:

  • To develop and validate a method for correcting polarization mode dispersion (PMD) in Jones-matrix-based polarization-sensitive optical coherence tomography (JM-OCT).
  • To mitigate the performance degradation caused by PMD, especially in JM-OCT systems incorporating optical buffering.

Main Methods:

  • Mathematical modeling of PMD effects within the JM-OCT system.
  • Implementation of a hybrid hardware-software correction approach.
  • Introduction of two polarizers for hardware modification, converting PMD into global Jones matrix modulation.
  • Development of software algorithms to demodulate and correct the induced modulation.

Main Results:

  • Successful mathematical modeling of PMD in JM-OCT.
  • Experimental validation using a point spread function with a mirror sample.
  • Demonstration of effective PMD correction through in vivo imaging of the human retina.

Conclusions:

  • The proposed method effectively corrects PMD in JM-OCT systems.
  • The combination of hardware modification and software correction offers a practical solution for improving JM-OCT performance.
  • This technique enhances the reliability and diagnostic capabilities of polarization-sensitive OCT for biological tissue imaging.