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Pulse extinction ratio improvement using SPM in an SOA for OTDM systems applications

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3 Author(s)
Nielsen, M.L. ; Res. Center COM, Tech. Univ. Denmark, Lyngby, Denmark ; Olsson, B. ; Blumenthal, D.J.

Improvement of pulse extinction ratio from 15-20 dB to approximately 40 dB of a 10-GHz pulse train is demonstrated using the self-phase modulation-induced spectral shift caused by a semiconductor optical amplifier (SOA). The improvement permits penalty-free optical time-division multiplexing to 40 Gb/s, and demultiplexing back to 10 Gb/s of an intentionally distorted signal. Without using the SOA the 40-Gb/s signal is not receivable.

Published in:

Photonics Technology Letters, IEEE  (Volume:14 ,  Issue: 2 )