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

Irina Trifanov; Paulo Caldas; Liviu Neagu; Rosa Romero; Martin O. Berendt; José R. Salcedo; Adrian Gh. Podoleanu; António B. Lobo Ribeiro

doi:10.1117/12.844905

17 February 2010 20-mW 70-nm bandwidth ASE fibre optic source at 1060-nm wavelength region for optical coherence tomography

Irina Trifanov, Paulo Caldas, Liviu Neagu, Rosa Romero, Martin O. Berendt, José R. Salcedo, Adrian Gh. Podoleanu, António B. Lobo Ribeiro

Author Affiliations +

Proceedings Volume 7580, Fiber Lasers VII: Technology, Systems, and Applications; 75800O (2010) https://doi.org/10.1117/12.844905
Event: SPIE LASE, 2010, San Francisco, California, United States

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.

Citation Download Citation

Irina Trifanov, Paulo Caldas, Liviu Neagu, Rosa Romero, Martin O. Berendt, José R. Salcedo, Adrian Gh. Podoleanu, and António B. Lobo Ribeiro "20-mW 70-nm bandwidth ASE fibre optic source at 1060-nm wavelength region for optical coherence tomography", Proc. SPIE 7580, Fiber Lasers VII: Technology, Systems, and Applications, 75800O (17 February 2010); https://doi.org/10.1117/12.844905

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