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40 Gbit/s wavelength conversion in cascade of SOA and NOLM and demonstration of extinction ratio improvement

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6 Author(s)
Jianjun Yu ; Research Centre COM, Tech. Univ., Lyngby, Denmark ; Clausen, A. ; Poulsen, H.N. ; Zheng, X.
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The authors demonstrate that the extinction ratio (ER) can be improved when a nonlinear optical loop mirror (NOLM) is used as a wavelength conversion medium. At 4O Gbit/s. An extinction ratio (ER) of 7 dB for a converted signal generated by cross-gain modulation in a semiconductor optical amplifier is improved to an ER of 10 dB after wavelength conversion in an NOLM.

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Electronics Letters  (Volume:36 ,  Issue: 11 )