Robust reconstruction of local optic axis orientation with fiber-based polarization-sensitive optical coherence tomography

Qingyun Li, Karol Karnowski, Peter B. Noble, Alvenia Cairncross, Alan James, Martin Villiger, David D. Sampson

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

It is challenging to recover local optic axis orientation from samples probed with fiber-based polarization-sensitive optical coherence tomography (PS-OCT). In addition to the effect of preceding tissue layers, the transmission through fiber and system elements, and imperfect system alignment, need to be compensated. Here, we present a method to retrieve the required correction factors from measurements with depth-multiplexed PS-OCT, which accurately measures the full Jones matrix. The correction considers both retardation and diattenuation and is applied in the wavenumber domain, preserving the axial resolution of the system. The robustness of the method is validated by measuring a birefringence phantom with a misaligned system. Imaging ex-vivo lamb trachea and human bronchus demonstrates the utility of reconstructing the local optic axis orientation to assess smooth muscle, which is expected to be useful in the assessment of airway smooth muscle thickness in asthma, amongst other fiber-based applications.

Original languageEnglish
Article number330240
Pages (from-to)5437-5455
Number of pages19
JournalBiomedical Optics Express
Volume9
Issue number11
DOIs
Publication statusPublished - 1 Nov 2018

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