TY - JOUR
T1 - Full-field quantitative phase and polarisation-resolved imaging through an optical fibre bundle
AU - Gordon, George S. D.
AU - Joseph, James
AU - Sawyer, Travis
AU - Macfaden, Alexander J.
AU - Williams, Calum
AU - Wilkinson, Timothy D.
AU - Bohndiek, Sarah E.
PY - 2019/8/19
Y1 - 2019/8/19
N2 - Flexible optical fibres, used in conventional medical endoscopy and industrial inspection, scramble phase and polarisation information, restricting users to amplitude-only imaging. Here, we exploit the near-diagonality of the multi-core fibre (MCF) transmission matrix in a parallelised fibre characterisation architecture, enabling accurate imaging of quantitative phase (error <0.3 rad) and polarisation-resolved (errors <10%) properties. We first demonstrate accurate recovery of optical amplitude and phase in two polarisations through the MCF by measuring and inverting the transmission matrix, and then present a robust Bayesian inference approach to resolving 5 polarimetric properties of samples. Our method produces high-resolution (9.0±2.6µm amplitude, phase; 36.0±10.4µm polarimetric) full-field images at working distances up to 1mm over a field-of-view up to 750×750µm2 using an MCF with potential for flexible operation. We demonstrate the potential of using quantitative phase for computational image focusing and polarisation-resolved properties in imaging birefringence.
AB - Flexible optical fibres, used in conventional medical endoscopy and industrial inspection, scramble phase and polarisation information, restricting users to amplitude-only imaging. Here, we exploit the near-diagonality of the multi-core fibre (MCF) transmission matrix in a parallelised fibre characterisation architecture, enabling accurate imaging of quantitative phase (error <0.3 rad) and polarisation-resolved (errors <10%) properties. We first demonstrate accurate recovery of optical amplitude and phase in two polarisations through the MCF by measuring and inverting the transmission matrix, and then present a robust Bayesian inference approach to resolving 5 polarimetric properties of samples. Our method produces high-resolution (9.0±2.6µm amplitude, phase; 36.0±10.4µm polarimetric) full-field images at working distances up to 1mm over a field-of-view up to 750×750µm2 using an MCF with potential for flexible operation. We demonstrate the potential of using quantitative phase for computational image focusing and polarisation-resolved properties in imaging birefringence.
UR - http://www.scopus.com/inward/record.url?scp=85071108257&partnerID=8YFLogxK
U2 - 10.1364/OE.27.023929
DO - 10.1364/OE.27.023929
M3 - Article
C2 - 31510290
AN - SCOPUS:85071108257
SN - 1094-4087
VL - 27
SP - 23929
EP - 23947
JO - Optics Express
JF - Optics Express
IS - 17
ER -