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Proceedings Paper

20-mW 70-nm bandwidth ASE fibre optic source at 1060-nm wavelength region for optical coherence tomography
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Paper Abstract

Optical coherence tomography (OCT) imaging at 1060 nm region proved to be a successful alternative in ophthalmology not only for resolving intraretinal layers, but also for enabling sufficient penetration to monitor the sub-retinal vasculature in the choroids when compared to most commonly used OCT imaging systems at 800 nm region. To encourage further clinical research at this particular wavelength, we have developed a compact fiber optic source based on amplified spontaneous emission (ASE) centered at ~1060 nm with ~70 nm spectral bandwidth at full-width half maximum (FWHM) and output power >20 mW. Our approach is based on a combination of slightly shifted ASE emission spectra from a combination of two rare-earth doped fibers (Ytterbium and Neodymium). Spectral shaping and power optimization have been achieved using in-fiber filtering solutions. We have tested the performances of the source in an OCT system optimized for this wavelength.

Paper Details

Date Published: 17 February 2010
PDF: 9 pages
Proc. SPIE 7580, Fiber Lasers VII: Technology, Systems, and Applications, 75800O (17 February 2010); doi: 10.1117/12.844905
Show Author Affiliations
Irina Trifanov, Multiwave Photonics, S.A. (Portugal)
Paulo Caldas, UOSE, INESC-Porto (Portugal)
Liviu Neagu, Multiwave Photonics, S.A. (Portugal)
Rosa Romero, 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)
Univ. Fernando Pessoa (Portugal)

Published in SPIE Proceedings Vol. 7580:
Fiber Lasers VII: Technology, Systems, and Applications
Kanishka Tankala, Editor(s)

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