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Optical 40-gb/s 3R regenerator with a combination of the SPM and XAM effects for all-optical networks

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4 Author(s)
Daikoku, M. ; KDDI R&D Labs. Inc., Saitama ; Yoshikane, N. ; Otani, T. ; Tanaka, Hideaki

An all-optical 3R regenerator with a combination of self-phase modulation (SPM) and cross-absorption modulation (XAM) effects is proposed and investigated. Principle performances of the proposed all-optical 3R regenerator were experimentally investigated at a signal bit rate of 40 Gb/s. The all-optical 3R regenerator, which is located at the midpoint of a 1080-km transmission line, successfully provided an approximately 3-dB improvement of the Q-factor both just after regeneration and after totally 1080-km transmission. The chromatic dispersion tolerance of the proposed 3R regenerator was also investigated and successfully enhanced to about twice as wide by introducing a predistortion block configuration including a highly nonlinear fiber (HNLF). It was confirmed that the proposed all-optical 3R regenerator can become one of the strong candidates for the actual deployment of the all-optical network

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Lightwave Technology, Journal of  (Volume:24 ,  Issue: 3 )