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21 February 2011 Picosecond programmable laser sweeping over 50 mega-wavelengths per second
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We report here the successful realization of 25 millions wavelengths per second using an SOA based PL around 1565 nm at a 75 MHz repetition rate. The laser is simply composed of an SOA, a CFBG (10 ps/nm) with a 100 nm bandwidth, an optical circulator, an EOM (intensity modulator), and an output coupler (20%). Pulse duration is around 45 ps and OSNR of the pulse is around 35 dB at 1565 nm without sweeping. Tunable dispersion compensating module (TDCM) was used to compress the chirped pulse output and 10 ps pulse duration was obtained at 1548 nm. Finally 25 megawavelengths per second was realized with under 3 pulses per wavelength and 1024 discrete wavelengths. Linear k-space sweeping function was enabled in the swept-source OCT (SS-OCT) system through graphical user interface (GUI).
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Youngjae Kim, Bryan Burgoyne, Nicolas Godbout, Alain Villeneuve, Guy Lamouche, and Sébastien Vergnole "Picosecond programmable laser sweeping over 50 mega-wavelengths per second", Proc. SPIE 7914, Fiber Lasers VIII: Technology, Systems, and Applications, 79140Y (21 February 2011);

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