Characterization of a fibre optic swept laser source at 1 μm for optical coherence tomography imaging systems

Trifanov, Irina; Neagu, Liviu; Bradu, Adrian; Lobo Ribeiro, Antonio B.; Podoleanu, Adrian Gh.

http://hdl.handle.net/10284/7975

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2011 - Conf. on Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIV, Photonics West 2011.pdf		1.39 MB	Adobe PDF	Download

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Authors

Trifanov, Irina

Neagu, Liviu

Bradu, Adrian

Lobo Ribeiro, Antonio B.

Podoleanu, Adrian Gh.

Abstract(s)

We report the development of a swept wavelength laser at 1 micron based on a linear cavity fibre configuration with an intra-cavity half symmetrical confocal Fabry-Perot tunable filter and a semiconductor optical amplifier as a gain medium. The performances of the source in terms of parameters like: sweep repetition rate (1-20 kHz), center wavelength (1065 nm), wavelength scanning range (max. 50nm), instantaneous line-width (<0.1nm) and a boosted output power of around 40 mW are demonstrated. The new source tested on an OCT system is exhibiting sufficient linearity in wave-number (k-space) at 1 kHz repetition rate; therefore no k-trigger, or wavelength rescaling process was needed.