Optical coherence tomography with a Fizeau interferometer configuration

Show simple item record

dc.contributor.author Casaubieilh, P. -
dc.contributor.author Ford, Helen D. -
dc.contributor.author James, Stephen W. -
dc.contributor.author Tatam, Ralph P. -
dc.contributor.editor Heidi, Ottevaere -
dc.contributor.editor Peter, DeWolf -
dc.contributor.editor Diederik, S. Wiersma -
dc.date.accessioned 2012-07-20T23:01:15Z
dc.date.available 2012-07-20T23:01:15Z
dc.date.issued 2005-12-31T00:00:00Z -
dc.identifier.citation P. Casaubieilh, H. D. Ford, S. W. James and R. P. Tatam. Optical coherence tomography with a Fizeau interferometer configuration. Proceedings of the SPIE Nano- and Micro-Metrology, 16-17 June 2005, Munich, Germany. Volume 5858, 58580I. Eds. Heidi Ottevaere, Peter DeWolf, Diederik S. Wiersma
dc.identifier.issn 0277-786X -
dc.identifier.uri http://dx.doi.org/10.1117/12.612737 -
dc.identifier.uri http://dspace.lib.cranfield.ac.uk/handle/1826/7403
dc.description.abstract We report the investigation of a Fizeau interferometer-based OCT system. A secondary processing interferometer is necessary in this configuration, to compensate the optical path difference formed in the Fizeau interferometer between the end of the fibre and the sample. The Fizeau configuration has the advantage of 'downlead insensitivity', which eliminates polarisation fading. An optical circulator is used in our system to route light efficiently from the source to the sample, and backscattered light from the sample and the fibre end through to the Mach-Zehnder processing interferometer. The choice of a Mach- Zehnder processing interferometer, from which both antiphase outputs are available, facilitates the incorporation of balanced detection, which often results in a large improvement in the Signal-to-Noise ratio (SNR) compared with the use of a single detector. Balanced detection comprises subtraction of the two antiphase interferometer outputs, implying that the signal amplitude is doubled and the noise is well reduced. It has been discerned that the SNR drops when the refractive index variation at a boundary is small. Several OCT images of samples (resin, resin + crystals, fibre composite) are presented. en_UK
dc.publisher International Society for Optical Engineering; 1999 en_UK
dc.subject Optical Coherence Tomography, Fizeau interferometer, optical fibres en_UK
dc.title Optical coherence tomography with a Fizeau interferometer configuration en_UK
dc.type Conference paper -

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search CERES


My Account