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Novel method to suppress noise in harmonically modelocked erbium fibre lasers

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2 Author(s)
Shan, X. ; Essex Univ., Colchester, UK ; Spirit, D.M.

A novel method to suppress noise in a high harmonic mode-locked erbium fibre laser is proposed and realised for the first time, dithering the cavity length at a kilohertz rate. This method makes only one supermode in the laser dominant and suppresses the others. A fibre laser so stabilised has enabled 2.5 Gbit/s soliton transmission over 205 km fibre remaining error free for 100 min, and in a recirculating loop achieving a 10-9 bit error rate at 12000 km, respectively.

Published in:

Electronics Letters  (Volume:29 ,  Issue: 11 )