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Brillouin fibre laser enhanced by Raman amplification

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3 Author(s)
Lou, J.W. ; Naval Res. Lab., SFA Inc., Washington, DC, USA ; Fatemi, F.K. ; Currie, M.

A multiple-wavelength Brillouin fibre laser is demonstrated, with channel spacings of ∼10.5 GHz, using Raman amplification in dispersion-shifted optical fibre. More than 20 frequency lines with ∼2 kHz linewidths are obtained using a 14.5 km length of fibre and a 1.3 MHz linewidth Brillouin pump. Gain depletion due to amplified spontaneous emission limits the total number of cascaded Brillouin lines. At high Raman pump powers, the laser produces a pulse train at the repetition rate corresponding to the cavity round-trip time.

Published in:

Electronics Letters  (Volume:40 ,  Issue: 17 )

Date of Publication:

19 Aug. 2004

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