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All-optical 3R regeneration technique using injection-locking in gain-switched DFB-LD

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3 Author(s)
Nakagawa, J. ; Opt. Commun. Res. Lab., Stanford Univ., CA, USA ; Marhic, M.E. ; Kazovsky, L.G.

A new all-optical 3R regeneration technique using injection-locking in a gain-switched DFB-LD is proposed. The operation of the technique is confirmed numerically and experimentally. Both simulation and experimental results show that the degraded RZ pulses are reshaped, retimed, and regenerated by injection-locking, into short pulses generated by gain-switching. Moreover, error-free all-optical 3R regeneration at 2.5 Gbit/s has been successfully achieved, with 1.5 dB negative penalty

Published in:

Electronics Letters  (Volume:37 ,  Issue: 4 )