Fibreoptic methods of cross-polarisation optical coherence tomography for endoscopic studies

Two systems of cross-polarisation optical coherence tomography based on polarisation-maintaining and polarisation non-maintaining fibres intended for in vivo endoscopic studies of biological objects are described. The sensitivities of the systems detecting scattered light with the initial and orthogonal polarisations in media with local microscopic optical anisotropic inhomogeneities are compared.