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Proceedings Paper

Development of fibre optic broadband sources at 1 μm region for optical coherence tomography
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Paper Abstract

Recent developments on broadband optical sources emitting at 1050 nm wavelength for medical applications, in particular optical coherence tomography (OCT), have revealed enhanced depth penetration into the choroid, reduced scattering losses and improved image performances in eyes with turbid media, when compared to the most commercial used semiconductor optical source technology at 820 nm. In this paper, we present our study of fibre optic broadband sources (BBS) at 1 micron region, based on the amplified spontaneous emission (ASE) from rare-earth doped silica fibres for the integration into OCT systems. The target specifications for this type of sources are: 1050 nm central emission wavelength, with spectral width of ~70 nm, tens of miliwatts of output power and smoothly shaped output spectra. Several combinations of rare-earth doped optical fibres integrated into different fibre optic configurations have been tested. Optical bandwidth optimization and spectral shaping using different fibre optic techniques are presented and their autocorrelation function compared.

Paper Details

Date Published: 30 December 2008
PDF: 9 pages
Proc. SPIE 7139, 1st Canterbury Workshop on Optical Coherence Tomography and Adaptive Optics, 713906 (30 December 2008); doi: 10.1117/12.815347
Show Author Affiliations
Irina Trifanov, Multiwave Photonics S.A. (Portugal)
Martin O. Berendt, Multiwave Photonics S.A. (Portugal)
José R. Salcedo, Multiwave Photonics S.A. (Portugal)
Adrian Gh. Podoleanu, Univ. of Kent (United Kingdom)
António B. Lobo Ribeiro, Multiwave Photonics S.A. (Portugal)

Published in SPIE Proceedings Vol. 7139:
1st Canterbury Workshop on Optical Coherence Tomography and Adaptive Optics
Adrian Podoleanu, Editor(s)

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