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Ultrafast nonlinear optical loop mirror for demultiplexing 640 Gbit/s TDM signals

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3 Author(s)
Yamamoto, T. ; Lightwave Commun. Lab., NTT Opt. Network Syst. Labs., Ibaraki, Japan ; Yoshida, E. ; Nakazawa, M.

A 640 Gbit/s TDM signal has been successfully demultiplexed to 10 Gbit/s with a walk-off free, ultrafast, 450 m long nonlinear optical loop mirror (NOLM). The NOLM consists of nine 50 m long sections of dispersion flattened fibre (DFF) with different group delay characteristics. The walk-off between the signal and control pulses for each of the nine fibres was within ±400 fs. By properly connecting them, a total walk-off of <100 fs has been achieved

Published in:

Electronics Letters  (Volume:34 ,  Issue: 10 )